cpython-lru_cache-weakref: Modules/structmodule.c annotate

annotate Modules/structmodule.c @ 25366:0b68d810a8be 2.2

Backport 2.57 from trunk: (Most of) SF patch 601369 (Christos Georgiou): obmalloc,structmodule: 64bit, big endian (issue 2 only). This adds a bunch of memcpy calls via a temporary variable to avoid alignment errors. That's needed for some platforms.

author	Guido van Rossum <guido@python.org>
date	Mon, 23 Sep 2002 20:54:04 +0000
parents	edd9d0b3c47e
children	eec3fd164a7d

rev	line source
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1 /* struct module -- pack values into and (out of) strings */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	2
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	3 /* New version supporting byte order, alignment and size options,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	4 character strings, and unsigned numbers */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	5
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	6 static char struct__doc__[] = "\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	7 Functions to convert between Python values and C structs.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	8 Python strings are used to hold the data representing the C struct\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	9 and also as format strings to describe the layout of data in the C struct.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	10 \n\
18077 622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	11 The optional first format char indicates byte order, size and alignment:\n\
622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	12 @: native order, size & alignment (default)\n\
622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	13 =: native order, std. size & alignment\n\
622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	14 <: little-endian, std. size & alignment\n\
622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	15 >: big-endian, std. size & alignment\n\
622867e4d832 Make clear in the docstring that "std" applies to both size and alignment, Tim Peters <tim.peters@gmail.com> parents: 18069 diff changeset	16 !: same as >\n\
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	17 \n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	18 The remaining chars indicate types of args and must match exactly;\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	19 these can be preceded by a decimal repeat count:\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	20 x: pad byte (no data); c:char; b:signed byte; B:unsigned byte;\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	21 h:short; H:unsigned short; i:int; I:unsigned int;\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	22 l:long; L:unsigned long; f:float; d:double.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	23 Special cases (preceding decimal count indicates length):\n\
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	24 s:string (array of char); p: pascal string (with count byte).\n\
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	25 Special case (only available in native format):\n\
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	26 P:an integer type that is wide enough to hold a pointer.\n\
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	27 Special case (not in native mode unless 'long long' in platform C):\n\
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	28 q:long long; Q:unsigned long long\n\
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	29 Whitespace between formats is ignored.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	30 \n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	31 The variable struct.error is an exception raised on errors.";
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	32
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	33 #include "Python.h"
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	34
6167 9e432468f756 Ignore whitespace between formats (not internal to a count+format). Guido van Rossum <guido@python.org> parents: 5318 diff changeset	35 #include <ctype.h>
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	36
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	37
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	38 /* Exception */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	39
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	40 static PyObject *StructError;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	41
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	42
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	43 /* Define various structs to figure out the alignments of types */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	44
2278 65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	45 #ifdef __MWERKS__
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	46 /*
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	47 ** XXXX We have a problem here. There are no unique alignment rules
18079 bc05b0b5e057 Trimmed trailing whitespace. Tim Peters <tim.peters@gmail.com> parents: 18078 diff changeset	48 ** on the PowerPC mac.
2278 65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	49 */
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	50 #ifdef __powerc
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	51 #pragma options align=mac68k
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	52 #endif
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	53 #endif /* __MWERKS__ */
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	54
20654 edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	55 typedef struct { char c; short x; } st_short;
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	56 typedef struct { char c; int x; } st_int;
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	57 typedef struct { char c; long x; } st_long;
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	58 typedef struct { char c; float x; } st_float;
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	59 typedef struct { char c; double x; } st_double;
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	60 typedef struct { char c; void *x; } st_void_p;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	61
20654 edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	62 #define SHORT_ALIGN (sizeof(st_short) - sizeof(short))
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	63 #define INT_ALIGN (sizeof(st_int) - sizeof(int))
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	64 #define LONG_ALIGN (sizeof(st_long) - sizeof(long))
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	65 #define FLOAT_ALIGN (sizeof(st_float) - sizeof(float))
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	66 #define DOUBLE_ALIGN (sizeof(st_double) - sizeof(double))
edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19924 diff changeset	67 #define VOID_P_ALIGN (sizeof(st_void_p) - sizeof(void *))
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	68
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	69 /* We can't support q and Q in native mode unless the compiler does;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	70 in std mode, they're 8 bytes on all platforms. */
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	71 #ifdef HAVE_LONG_LONG
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	72 typedef struct { char c; LONG_LONG x; } s_long_long;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	73 #define LONG_LONG_ALIGN (sizeof(s_long_long) - sizeof(LONG_LONG))
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	74 #endif
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	75
14587 e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	76 #define STRINGIFY(x) #x
e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	77
2278 65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	78 #ifdef __powerc
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	79 #pragma options align=reset
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	80 #endif
65644766158a Quick hack so PowerPC macs can access system structures Jack Jansen <jack.jansen@cwi.nl> parents: 2061 diff changeset	81
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	82 /* Helper to get a PyLongObject by hook or by crook. Caller should decref. */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	83
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	84 static PyObject *
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	85 get_pylong(PyObject *v)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	86 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	87 PyNumberMethods *m;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	88
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	89 assert(v != NULL);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	90 if (PyInt_Check(v))
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	91 return PyLong_FromLong(PyInt_AS_LONG(v));
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	92 if (PyLong_Check(v)) {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	93 Py_INCREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	94 return v;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	95 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	96 m = v->ob_type->tp_as_number;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	97 if (m != NULL && m->nb_long != NULL) {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	98 v = m->nb_long(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	99 if (v == NULL)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	100 return NULL;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	101 if (PyLong_Check(v))
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	102 return v;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	103 Py_DECREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	104 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	105 PyErr_SetString(StructError,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	106 "cannot convert argument to long");
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	107 return NULL;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	108 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	109
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	110 /* Helper routine to get a Python integer and raise the appropriate error
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	111 if it isn't one */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	112
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	113 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	114 get_long(PyObject v, long p)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	115 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	116 long x = PyInt_AsLong(v);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	117 if (x == -1 && PyErr_Occurred()) {
8434 ae746eab2a96 get_long(): Use PyErr_ExceptionMatches(...) instead of PyErr_Occurred(...). Fred Drake <fdrake@acm.org> parents: 7982 diff changeset	118 if (PyErr_ExceptionMatches(PyExc_TypeError))
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	119 PyErr_SetString(StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	120 "required argument is not an integer");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	121 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	122 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	123 *p = x;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	124 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	125 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	126
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	127
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	128 /* Same, but handling unsigned long */
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	129
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	130 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	131 get_ulong(PyObject v, unsigned long p)
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	132 {
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	133 if (PyLong_Check(v)) {
03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	134 unsigned long x = PyLong_AsUnsignedLong(v);
03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	135 if (x == (unsigned long)(-1) && PyErr_Occurred())
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	136 return -1;
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	137 *p = x;
03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	138 return 0;
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	139 }
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	140 else {
03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	141 return get_long(v, (long *)p);
03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	142 }
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	143 }
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	144
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	145 #ifdef HAVE_LONG_LONG
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	146
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	147 /* Same, but handling native long long. */
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	148
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	149 static int
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	150 get_longlong(PyObject v, LONG_LONG p)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	151 {
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	152 LONG_LONG x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	153
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	154 v = get_pylong(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	155 if (v == NULL)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	156 return -1;
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	157 assert(PyLong_Check(v));
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	158 x = PyLong_AsLongLong(v);
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	159 Py_DECREF(v);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	160 if (x == (LONG_LONG)-1 && PyErr_Occurred())
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	161 return -1;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	162 *p = x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	163 return 0;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	164 }
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	165
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	166 /* Same, but handling native unsigned long long. */
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	167
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	168 static int
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	169 get_ulonglong(PyObject v, unsigned LONG_LONG p)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	170 {
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	171 unsigned LONG_LONG x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	172
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	173 v = get_pylong(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	174 if (v == NULL)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	175 return -1;
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	176 assert(PyLong_Check(v));
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	177 x = PyLong_AsUnsignedLongLong(v);
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	178 Py_DECREF(v);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	179 if (x == (unsigned LONG_LONG)-1 && PyErr_Occurred())
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	180 return -1;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	181 *p = x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	182 return 0;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	183 }
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	184
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	185 #endif
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	186
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	187 /* Floating point helpers */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	188
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	189 /* These use ANSI/IEEE Standard 754-1985 (Standard for Binary Floating
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	190 Point Arithmetic). See the following URL:
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	191 http://www.psc.edu/general/software/packages/ieee/ieee.html */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	192
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	193 /* XXX Inf/NaN are not handled quite right (but underflow is!) */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	194
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	195 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	196 pack_float(double x, /* The number to pack */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	197 char p, / Where to pack the high order byte */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	198 int incr) /* 1 for big-endian; -1 for little-endian */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	199 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	200 int s;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	201 int e;
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	202 double f;
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	203 long fbits;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	204
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	205 if (x < 0) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	206 s = 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	207 x = -x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	208 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	209 else
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	210 s = 0;
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	211
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	212 f = frexp(x, &e);
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	213
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	214 /* Normalize f to be in the range [1.0, 2.0) */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	215 if (0.5 <= f && f < 1.0) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	216 f *= 2.0;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	217 e--;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	218 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	219 else if (f == 0.0) {
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	220 e = 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	221 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	222 else {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	223 PyErr_SetString(PyExc_SystemError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	224 "frexp() result out of range");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	225 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	226 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	227
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	228 if (e >= 128) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	229 /* XXX 128 itself is reserved for Inf/NaN */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	230 PyErr_SetString(PyExc_OverflowError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	231 "float too large to pack with f format");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	232 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	233 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	234 else if (e < -126) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	235 /* Gradual underflow */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	236 f = ldexp(f, 126 + e);
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	237 e = 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	238 }
6551 bdd4cb2a83b5 Fix due to Bill Noon for problem discovered by Ken Manheimer: packing Guido van Rossum <guido@python.org> parents: 6367 diff changeset	239 else if (!(e == 0 && f == 0.0)) {
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	240 e += 127;
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	241 f -= 1.0; /* Get rid of leading 1 */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	242 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	243
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	244 f = 8388608.0; / 2*23 /
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	245 fbits = (long) floor(f + 0.5); /* Round */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	246
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	247 /* First byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	248 *p = (s<<7) \| (e>>1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	249 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	250
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	251 /* Second byte */
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	252 *p = (char) (((e&1)<<7) \| (fbits>>16));
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	253 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	254
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	255 /* Third byte */
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	256 *p = (fbits>>8) & 0xFF;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	257 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	258
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	259 /* Fourth byte */
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	260 *p = fbits&0xFF;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	261
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	262 /* Done */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	263 return 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	264 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	265
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	266 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	267 pack_double(double x, /* The number to pack */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	268 char p, / Where to pack the high order byte */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	269 int incr) /* 1 for big-endian; -1 for little-endian */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	270 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	271 int s;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	272 int e;
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	273 double f;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	274 long fhi, flo;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	275
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	276 if (x < 0) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	277 s = 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	278 x = -x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	279 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	280 else
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	281 s = 0;
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	282
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	283 f = frexp(x, &e);
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	284
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	285 /* Normalize f to be in the range [1.0, 2.0) */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	286 if (0.5 <= f && f < 1.0) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	287 f *= 2.0;
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	288 e--;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	289 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	290 else if (f == 0.0) {
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	291 e = 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	292 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	293 else {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	294 PyErr_SetString(PyExc_SystemError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	295 "frexp() result out of range");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	296 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	297 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	298
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	299 if (e >= 1024) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	300 /* XXX 1024 itself is reserved for Inf/NaN */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	301 PyErr_SetString(PyExc_OverflowError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	302 "float too large to pack with d format");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	303 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	304 }
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	305 else if (e < -1022) {
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	306 /* Gradual underflow */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	307 f = ldexp(f, 1022 + e);
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	308 e = 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	309 }
6551 bdd4cb2a83b5 Fix due to Bill Noon for problem discovered by Ken Manheimer: packing Guido van Rossum <guido@python.org> parents: 6367 diff changeset	310 else if (!(e == 0 && f == 0.0)) {
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	311 e += 1023;
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	312 f -= 1.0; /* Get rid of leading 1 */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	313 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	314
4861 69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	315 /* fhi receives the high 28 bits; flo the low 24 bits (== 52 bits) */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	316 f = 268435456.0; / 2*28 /
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	317 fhi = (long) floor(f); /* Truncate */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	318 f -= (double)fhi;
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	319 f = 16777216.0; / 2*24 /
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	320 flo = (long) floor(f + 0.5); /* Round */
69ca5e3ccc6d Ok, ok, I've fixed gradual underflow on packing too. Guido van Rossum <guido@python.org> parents: 4859 diff changeset	321
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	322 /* First byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	323 *p = (s<<7) \| (e>>4);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	324 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	325
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	326 /* Second byte */
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	327 *p = (char) (((e&0xF)<<4) \| (fhi>>24));
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	328 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	329
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	330 /* Third byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	331 *p = (fhi>>16) & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	332 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	333
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	334 /* Fourth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	335 *p = (fhi>>8) & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	336 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	337
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	338 /* Fifth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	339 *p = fhi & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	340 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	341
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	342 /* Sixth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	343 *p = (flo>>16) & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	344 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	345
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	346 /* Seventh byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	347 *p = (flo>>8) & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	348 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	349
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	350 /* Eighth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	351 *p = flo & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	352 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	353
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	354 /* Done */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	355 return 0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	356 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	357
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	358 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	359 unpack_float(const char p, / Where the high order byte is */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	360 int incr) /* 1 for big-endian; -1 for little-endian */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	361 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	362 int s;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	363 int e;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	364 long f;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	365 double x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	366
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	367 /* First byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	368 s = (*p>>7) & 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	369 e = (*p & 0x7F) << 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	370 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	371
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	372 /* Second byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	373 e \|= (*p>>7) & 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	374 f = (*p & 0x7F) << 16;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	375 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	376
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	377 /* Third byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	378 f \|= (*p & 0xFF) << 8;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	379 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	380
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	381 /* Fourth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	382 f \|= *p & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	383
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	384 x = (double)f / 8388608.0;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	385
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	386 /* XXX This sadly ignores Inf/NaN issues */
4859 ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	387 if (e == 0)
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	388 e = -126;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	389 else {
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	390 x += 1.0;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	391 e -= 127;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	392 }
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	393 x = ldexp(x, e);
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	394
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	395 if (s)
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	396 x = -x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	397
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	398 return PyFloat_FromDouble(x);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	399 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	400
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	401 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	402 unpack_double(const char p, / Where the high order byte is */
7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	403 int incr) /* 1 for big-endian; -1 for little-endian */
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	404 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	405 int s;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	406 int e;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	407 long fhi, flo;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	408 double x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	409
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	410 /* First byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	411 s = (*p>>7) & 1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	412 e = (*p & 0x7F) << 4;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	413 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	414
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	415 /* Second byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	416 e \|= (*p>>4) & 0xF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	417 fhi = (*p & 0xF) << 24;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	418 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	419
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	420 /* Third byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	421 fhi \|= (*p & 0xFF) << 16;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	422 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	423
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	424 /* Fourth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	425 fhi \|= (*p & 0xFF) << 8;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	426 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	427
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	428 /* Fifth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	429 fhi \|= *p & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	430 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	431
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	432 /* Sixth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	433 flo = (*p & 0xFF) << 16;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	434 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	435
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	436 /* Seventh byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	437 flo \|= (*p & 0xFF) << 8;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	438 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	439
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	440 /* Eighth byte */
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	441 flo \|= *p & 0xFF;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	442 p += incr;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	443
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	444 x = (double)fhi + (double)flo / 16777216.0; /* 2*24 /
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	445 x /= 268435456.0; /* 2*28 /
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	446
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	447 /* XXX This sadly ignores Inf/NaN */
4859 ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	448 if (e == 0)
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	449 e = -1022;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	450 else {
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	451 x += 1.0;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	452 e -= 1023;
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	453 }
ab461c762559 Oops -- unpack float/double didn't do the right thing if e==0. Guido van Rossum <guido@python.org> parents: 4858 diff changeset	454 x = ldexp(x, e);
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	455
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	456 if (s)
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	457 x = -x;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	458
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	459 return PyFloat_FromDouble(x);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	460 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	461
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	462
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	463 /* The translation function for each format character is table driven */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	464
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	465 typedef struct _formatdef {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	466 char format;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	467 int size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	468 int alignment;
13447 a89f7f268de4 Nuke all remaining occurrences of Py_PROTO and Py_FPROTO. Tim Peters <tim.peters@gmail.com> parents: 13256 diff changeset	469 PyObject* (unpack)(const char ,
a89f7f268de4 Nuke all remaining occurrences of Py_PROTO and Py_FPROTO. Tim Peters <tim.peters@gmail.com> parents: 13256 diff changeset	470 const struct _formatdef *);
a89f7f268de4 Nuke all remaining occurrences of Py_PROTO and Py_FPROTO. Tim Peters <tim.peters@gmail.com> parents: 13256 diff changeset	471 int (pack)(char , PyObject *,
a89f7f268de4 Nuke all remaining occurrences of Py_PROTO and Py_FPROTO. Tim Peters <tim.peters@gmail.com> parents: 13256 diff changeset	472 const struct _formatdef *);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	473 } formatdef;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	474
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	475 /* A large number of small routines follow, with names of the form
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	476
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	477 [bln][up]_TYPE
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	478
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	479 [bln] distiguishes among big-endian, little-endian and native.
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	480 [pu] distiguishes between pack (to struct) and unpack (from struct).
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	481 TYPE is one of char, byte, ubyte, etc.
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	482 */
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	483
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	484 /* Native mode routines. ****************************************************/
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	485 /* NOTE:
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	486 In all n[up]_<type> routines handling types larger than 1 byte, there is
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	487 no guarantee that the p pointer is properly aligned for each type,
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	488 therefore memcpy is called. An intermediate variable is used to
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	489 compensate for big-endian architectures.
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	490 Normally both the intermediate variable and the memcpy call will be
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	491 skipped by C optimisation in little-endian architectures (gcc >= 2.91
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	492 does this). */
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	493
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	494 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	495 nu_char(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	496 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	497 return PyString_FromStringAndSize(p, 1);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	498 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	499
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	500 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	501 nu_byte(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	502 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	503 return PyInt_FromLong((long) (signed char )p);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	504 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	505
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	506 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	507 nu_ubyte(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	508 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	509 return PyInt_FromLong((long) (unsigned char )p);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	510 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	511
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	512 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	513 nu_short(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	514 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	515 short x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	516 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	517 return PyInt_FromLong((long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	518 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	519
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	520 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	521 nu_ushort(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	522 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	523 unsigned short x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	524 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	525 return PyInt_FromLong((long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	526 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	527
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	528 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	529 nu_int(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	530 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	531 int x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	532 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	533 return PyInt_FromLong((long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	534 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	535
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	536 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	537 nu_uint(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	538 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	539 unsigned int x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	540 memcpy((char *)&x, p, sizeof x);
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	541 return PyLong_FromUnsignedLong((unsigned long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	542 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	543
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	544 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	545 nu_long(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	546 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	547 long x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	548 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	549 return PyInt_FromLong(x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	550 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	551
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	552 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	553 nu_ulong(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	554 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	555 unsigned long x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	556 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	557 return PyLong_FromUnsignedLong(x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	558 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	559
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	560 /* Native mode doesn't support q or Q unless the platform C supports
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	561 long long (or, on Windows, __int64). */
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	562
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	563 #ifdef HAVE_LONG_LONG
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	564
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	565 static PyObject *
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	566 nu_longlong(const char p, const formatdef f)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	567 {
18705 8df77415a61d SF bug #442520: test_struct fails on SPARC. Tim Peters <tim.peters@gmail.com> parents: 18094 diff changeset	568 LONG_LONG x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	569 memcpy((char *)&x, p, sizeof x);
18705 8df77415a61d SF bug #442520: test_struct fails on SPARC. Tim Peters <tim.peters@gmail.com> parents: 18094 diff changeset	570 return PyLong_FromLongLong(x);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	571 }
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	572
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	573 static PyObject *
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	574 nu_ulonglong(const char p, const formatdef f)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	575 {
18705 8df77415a61d SF bug #442520: test_struct fails on SPARC. Tim Peters <tim.peters@gmail.com> parents: 18094 diff changeset	576 unsigned LONG_LONG x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	577 memcpy((char *)&x, p, sizeof x);
18705 8df77415a61d SF bug #442520: test_struct fails on SPARC. Tim Peters <tim.peters@gmail.com> parents: 18094 diff changeset	578 return PyLong_FromUnsignedLongLong(x);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	579 }
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	580
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	581 #endif
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	582
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	583 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	584 nu_float(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	585 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	586 float x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	587 memcpy((char *)&x, p, sizeof x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	588 return PyFloat_FromDouble((double)x);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	589 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	590
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	591 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	592 nu_double(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	593 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	594 double x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	595 memcpy((char *)&x, p, sizeof x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	596 return PyFloat_FromDouble(x);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	597 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	598
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	599 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	600 nu_void_p(const char p, const formatdef f)
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	601 {
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	602 void *x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	603 memcpy((char *)&x, p, sizeof x);
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	604 return PyLong_FromVoidPtr(x);
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	605 }
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	606
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	607 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	608 np_byte(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	609 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	610 long x;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	611 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	612 return -1;
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	613 if (x < -128 \|\| x > 127){
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	614 PyErr_SetString(StructError,
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	615 "byte format requires -128<=number<=127");
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	616 return -1;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	617 }
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	618 *p = (char)x;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	619 return 0;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	620 }
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	621
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	622 static int
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	623 np_ubyte(char p, PyObject v, const formatdef *f)
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	624 {
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	625 long x;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	626 if (get_long(v, &x) < 0)
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	627 return -1;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	628 if (x < 0 \|\| x > 255){
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	629 PyErr_SetString(StructError,
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	630 "ubyte format requires 0<=number<=255");
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	631 return -1;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	632 }
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	633 *p = (char)x;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	634 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	635 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	636
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	637 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	638 np_char(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	639 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	640 if (!PyString_Check(v) \|\| PyString_Size(v) != 1) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	641 PyErr_SetString(StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	642 "char format require string of length 1");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	643 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	644 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	645 p = PyString_AsString(v);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	646 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	647 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	648
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	649 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	650 np_short(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	651 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	652 long x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	653 short y;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	654 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	655 return -1;
14587 e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	656 if (x < SHRT_MIN \|\| x > SHRT_MAX){
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	657 PyErr_SetString(StructError,
14587 e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	658 "short format requires " STRINGIFY(SHRT_MIN)
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	659 "<=number<=" STRINGIFY(SHRT_MAX));
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	660 return -1;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	661 }
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	662 y = (short)x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	663 memcpy(p, (char *)&y, sizeof y);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	664 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	665 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	666
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	667 static int
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	668 np_ushort(char p, PyObject v, const formatdef *f)
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	669 {
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	670 long x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	671 unsigned short y;
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	672 if (get_long(v, &x) < 0)
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	673 return -1;
14587 e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	674 if (x < 0 \|\| x > USHRT_MAX){
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	675 PyErr_SetString(StructError,
14587 e8d8758adfdb Use symbolic constants for allowable short ranges. Martin v. Löwis <martin@v.loewis.de> parents: 14583 diff changeset	676 "short format requires 0<=number<=" STRINGIFY(USHRT_MAX));
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	677 return -1;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	678 }
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	679 y = (unsigned short)x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	680 memcpy(p, (char *)&y, sizeof y);
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	681 return 0;
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	682 }
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	683
213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	684 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	685 np_int(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	686 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	687 long x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	688 int y;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	689 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	690 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	691 y = (int)x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	692 memcpy(p, (char *)&y, sizeof y);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	693 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	694 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	695
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	696 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	697 np_uint(char p, PyObject v, const formatdef *f)
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	698 {
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	699 unsigned long x;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	700 unsigned int y;
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	701 if (get_ulong(v, &x) < 0)
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	702 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	703 y = (unsigned int)x;
0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	704 memcpy(p, (char *)&y, sizeof y);
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	705 return 0;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	706 }
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	707
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	708 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	709 np_long(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	710 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	711 long x;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	712 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	713 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	714 memcpy(p, (char *)&x, sizeof x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	715 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	716 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	717
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	718 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	719 np_ulong(char p, PyObject v, const formatdef *f)
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	720 {
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	721 unsigned long x;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	722 if (get_ulong(v, &x) < 0)
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	723 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	724 memcpy(p, (char *)&x, sizeof x);
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	725 return 0;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	726 }
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	727
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	728 #ifdef HAVE_LONG_LONG
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	729
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	730 static int
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	731 np_longlong(char p, PyObject v, const formatdef *f)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	732 {
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	733 LONG_LONG x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	734 if (get_longlong(v, &x) < 0)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	735 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	736 memcpy(p, (char *)&x, sizeof x);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	737 return 0;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	738 }
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	739
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	740 static int
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	741 np_ulonglong(char p, PyObject v, const formatdef *f)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	742 {
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	743 unsigned LONG_LONG x;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	744 if (get_ulonglong(v, &x) < 0)
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	745 return -1;
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	746 memcpy(p, (char *)&x, sizeof x);
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	747 return 0;
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	748 }
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	749 #endif
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	750
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	751 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	752 np_float(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	753 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	754 float x = (float)PyFloat_AsDouble(v);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	755 if (x == -1 && PyErr_Occurred()) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	756 PyErr_SetString(StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	757 "required argument is not a float");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	758 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	759 }
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	760 memcpy(p, (char *)&x, sizeof x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	761 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	762 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	763
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	764 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	765 np_double(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	766 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	767 double x = PyFloat_AsDouble(v);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	768 if (x == -1 && PyErr_Occurred()) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	769 PyErr_SetString(StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	770 "required argument is not a float");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	771 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	772 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	773 memcpy(p, (char *)&x, sizeof(double));
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	774 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	775 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	776
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	777 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	778 np_void_p(char p, PyObject v, const formatdef *f)
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	779 {
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	780 void *x = PyLong_AsVoidPtr(v);
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	781 if (x == NULL && PyErr_Occurred()) {
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	782 /* ### hrm. PyLong_AsVoidPtr raises SystemError */
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	783 if (PyErr_ExceptionMatches(PyExc_TypeError))
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	784 PyErr_SetString(StructError,
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	785 "required argument is not an integer");
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	786 return -1;
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	787 }
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	788 memcpy(p, (char *)&x, sizeof x);
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	789 return 0;
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	790 }
17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	791
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	792 static formatdef native_table[] = {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	793 {'x', sizeof(char), 0, NULL},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	794 {'b', sizeof(char), 0, nu_byte, np_byte},
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	795 {'B', sizeof(char), 0, nu_ubyte, np_ubyte},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	796 {'c', sizeof(char), 0, nu_char, np_char},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	797 {'s', sizeof(char), 0, NULL},
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	798 {'p', sizeof(char), 0, NULL},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	799 {'h', sizeof(short), SHORT_ALIGN, nu_short, np_short},
14583 213dbc880159 Check range for bytes and shorts. Closes bug #110845. Martin v. Löwis <martin@v.loewis.de> parents: 14375 diff changeset	800 {'H', sizeof(short), SHORT_ALIGN, nu_ushort, np_ushort},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	801 {'i', sizeof(int), INT_ALIGN, nu_int, np_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	802 {'I', sizeof(int), INT_ALIGN, nu_uint, np_uint},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	803 {'l', sizeof(long), LONG_ALIGN, nu_long, np_long},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	804 {'L', sizeof(long), LONG_ALIGN, nu_ulong, np_ulong},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	805 {'f', sizeof(float), FLOAT_ALIGN, nu_float, np_float},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	806 {'d', sizeof(double), DOUBLE_ALIGN, nu_double, np_double},
9123 17d0c51e0887 Patches from Greg Stein to support 'P' format in struct module's Guido van Rossum <guido@python.org> parents: 8580 diff changeset	807 {'P', sizeof(void *), VOID_P_ALIGN, nu_void_p, np_void_p},
18069 8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	808 #ifdef HAVE_LONG_LONG
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	809 {'q', sizeof(LONG_LONG), LONG_LONG_ALIGN, nu_longlong, np_longlong},
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	810 {'Q', sizeof(LONG_LONG), LONG_LONG_ALIGN, nu_ulonglong,np_ulonglong},
8e187740aa96 Initial support for 'q' and 'Q' struct format codes: for now, only in Tim Peters <tim.peters@gmail.com> parents: 17343 diff changeset	811 #endif
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	812 {0}
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	813 };
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	814
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	815 /* Big-endian routines. *****************************************************/
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	816
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	817 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	818 bu_int(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	819 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	820 long x = 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	821 int i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	822 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	823 x = (x<<8) \| (*p++ & 0xFF);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	824 } while (--i > 0);
17343 de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	825 /* Extend the sign bit. */
de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	826 if (SIZEOF_LONG > f->size)
de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	827 x \|= -(x & (1L << (8*f->size - 1)));
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	828 return PyInt_FromLong(x);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	829 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	830
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	831 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	832 bu_uint(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	833 {
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	834 unsigned long x = 0;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	835 int i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	836 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	837 x = (x<<8) \| (*p++ & 0xFF);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	838 } while (--i > 0);
8580 1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	839 if (f->size >= 4)
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	840 return PyLong_FromUnsignedLong(x);
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	841 else
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	842 return PyInt_FromLong((long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	843 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	844
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	845 static PyObject *
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	846 bu_longlong(const char p, const formatdef f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	847 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	848 return _PyLong_FromByteArray((const unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	849 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	850 0, /* little-endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	851 1 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	852 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	853
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	854 static PyObject *
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	855 bu_ulonglong(const char p, const formatdef f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	856 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	857 return _PyLong_FromByteArray((const unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	858 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	859 0, /* little-endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	860 0 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	861 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	862
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	863 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	864 bu_float(const char p, const formatdef f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	865 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	866 return unpack_float(p, 1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	867 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	868
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	869 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	870 bu_double(const char p, const formatdef f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	871 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	872 return unpack_double(p, 1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	873 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	874
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	875 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	876 bp_int(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	877 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	878 long x;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	879 int i;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	880 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	881 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	882 i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	883 do {
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	884 p[--i] = (char)x;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	885 x >>= 8;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	886 } while (i > 0);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	887 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	888 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	889
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	890 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	891 bp_uint(char p, PyObject v, const formatdef *f)
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	892 {
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	893 unsigned long x;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	894 int i;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	895 if (get_ulong(v, &x) < 0)
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	896 return -1;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	897 i = f->size;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	898 do {
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	899 p[--i] = (char)x;
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	900 x >>= 8;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	901 } while (i > 0);
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	902 return 0;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	903 }
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	904
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	905 static int
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	906 bp_longlong(char p, PyObject v, const formatdef *f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	907 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	908 int res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	909 v = get_pylong(v);
18094 2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	910 if (v == NULL)
2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	911 return -1;
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	912 res = _PyLong_AsByteArray((PyLongObject *)v,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	913 (unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	914 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	915 0, /* little_endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	916 1 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	917 Py_DECREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	918 return res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	919 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	920
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	921 static int
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	922 bp_ulonglong(char p, PyObject v, const formatdef *f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	923 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	924 int res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	925 v = get_pylong(v);
18094 2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	926 if (v == NULL)
2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	927 return -1;
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	928 res = _PyLong_AsByteArray((PyLongObject *)v,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	929 (unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	930 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	931 0, /* little_endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	932 0 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	933 Py_DECREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	934 return res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	935 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	936
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	937 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	938 bp_float(char p, PyObject v, const formatdef *f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	939 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	940 double x = PyFloat_AsDouble(v);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	941 if (x == -1 && PyErr_Occurred()) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	942 PyErr_SetString(StructError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	943 "required argument is not a float");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	944 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	945 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	946 return pack_float(x, p, 1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	947 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	948
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	949 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	950 bp_double(char p, PyObject v, const formatdef *f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	951 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	952 double x = PyFloat_AsDouble(v);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	953 if (x == -1 && PyErr_Occurred()) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	954 PyErr_SetString(StructError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	955 "required argument is not a float");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	956 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	957 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	958 return pack_double(x, p, 1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	959 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	960
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	961 static formatdef bigendian_table[] = {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	962 {'x', 1, 0, NULL},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	963 {'b', 1, 0, bu_int, bp_int},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	964 {'B', 1, 0, bu_uint, bp_int},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	965 {'c', 1, 0, nu_char, np_char},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	966 {'s', 1, 0, NULL},
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	967 {'p', 1, 0, NULL},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	968 {'h', 2, 0, bu_int, bp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	969 {'H', 2, 0, bu_uint, bp_uint},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	970 {'i', 4, 0, bu_int, bp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	971 {'I', 4, 0, bu_uint, bp_uint},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	972 {'l', 4, 0, bu_int, bp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	973 {'L', 4, 0, bu_uint, bp_uint},
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	974 {'q', 8, 0, bu_longlong, bp_longlong},
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	975 {'Q', 8, 0, bu_ulonglong, bp_ulonglong},
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	976 {'f', 4, 0, bu_float, bp_float},
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	977 {'d', 8, 0, bu_double, bp_double},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	978 {0}
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	979 };
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	980
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	981 /* Little-endian routines. *****************************************************/
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	982
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	983 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	984 lu_int(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	985 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	986 long x = 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	987 int i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	988 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	989 x = (x<<8) \| (p[--i] & 0xFF);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	990 } while (i > 0);
17343 de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	991 /* Extend the sign bit. */
de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	992 if (SIZEOF_LONG > f->size)
de9858530a55 Repair portability of sign extension when reading signed ints on boxes Tim Peters <tim.peters@gmail.com> parents: 14869 diff changeset	993 x \|= -(x & (1L << (8*f->size - 1)));
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	994 return PyInt_FromLong(x);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	995 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	996
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	997 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	998 lu_uint(const char p, const formatdef f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	999 {
4874 03bcdd22f6a4 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned Guido van Rossum <guido@python.org> parents: 4867 diff changeset	1000 unsigned long x = 0;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1001 int i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1002 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1003 x = (x<<8) \| (p[--i] & 0xFF);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1004 } while (i > 0);
8580 1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	1005 if (f->size >= 4)
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	1006 return PyLong_FromUnsignedLong(x);
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	1007 else
1ca6895024d9 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! Guido van Rossum <guido@python.org> parents: 8434 diff changeset	1008 return PyInt_FromLong((long)x);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1009 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1010
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1011 static PyObject *
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1012 lu_longlong(const char p, const formatdef f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1013 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1014 return _PyLong_FromByteArray((const unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1015 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1016 1, /* little-endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1017 1 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1018 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1019
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1020 static PyObject *
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1021 lu_ulonglong(const char p, const formatdef f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1022 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1023 return _PyLong_FromByteArray((const unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1024 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1025 1, /* little-endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1026 0 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1027 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1028
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1029 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1030 lu_float(const char p, const formatdef f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1031 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1032 return unpack_float(p+3, -1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1033 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1034
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1035 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1036 lu_double(const char p, const formatdef f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1037 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1038 return unpack_double(p+7, -1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1039 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1040
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1041 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1042 lp_int(char p, PyObject v, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1043 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1044 long x;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1045 int i;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1046 if (get_long(v, &x) < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1047 return -1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1048 i = f->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1049 do {
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	1050 *p++ = (char)x;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1051 x >>= 8;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1052 } while (--i > 0);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1053 return 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1054 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1055
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1056 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1057 lp_uint(char p, PyObject v, const formatdef *f)
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1058 {
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1059 unsigned long x;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1060 int i;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1061 if (get_ulong(v, &x) < 0)
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1062 return -1;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1063 i = f->size;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1064 do {
5318 2c4b802a3b5d Keep Microsoft VC happy. Guido van Rossum <guido@python.org> parents: 4874 diff changeset	1065 *p++ = (char)x;
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1066 x >>= 8;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1067 } while (--i > 0);
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1068 return 0;
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1069 }
972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1070
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1071 static int
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1072 lp_longlong(char p, PyObject v, const formatdef *f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1073 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1074 int res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1075 v = get_pylong(v);
18094 2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	1076 if (v == NULL)
2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	1077 return -1;
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1078 res = _PyLong_AsByteArray((PyLongObject*)v,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1079 (unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1080 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1081 1, /* little_endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1082 1 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1083 Py_DECREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1084 return res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1085 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1086
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1087 static int
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1088 lp_ulonglong(char p, PyObject v, const formatdef *f)
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1089 {
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1090 int res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1091 v = get_pylong(v);
18094 2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	1092 if (v == NULL)
2367b7a001a7 The new {b,l}p_{u,}longlong() didn't check get_pylong()'s return for NULL. Tim Peters <tim.peters@gmail.com> parents: 18084 diff changeset	1093 return -1;
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1094 res = _PyLong_AsByteArray((PyLongObject*)v,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1095 (unsigned char *)p,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1096 8,
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1097 1, /* little_endian */
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1098 0 /* signed */);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1099 Py_DECREF(v);
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1100 return res;
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1101 }
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1102
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1103 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1104 lp_float(char p, PyObject v, const formatdef *f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1105 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1106 double x = PyFloat_AsDouble(v);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1107 if (x == -1 && PyErr_Occurred()) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1108 PyErr_SetString(StructError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1109 "required argument is not a float");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1110 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1111 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1112 return pack_float(x, p+3, -1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1113 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1114
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1115 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1116 lp_double(char p, PyObject v, const formatdef *f)
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1117 {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1118 double x = PyFloat_AsDouble(v);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1119 if (x == -1 && PyErr_Occurred()) {
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1120 PyErr_SetString(StructError,
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1121 "required argument is not a float");
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1122 return -1;
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1123 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1124 return pack_double(x, p+7, -1);
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1125 }
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1126
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1127 static formatdef lilendian_table[] = {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1128 {'x', 1, 0, NULL},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1129 {'b', 1, 0, lu_int, lp_int},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1130 {'B', 1, 0, lu_uint, lp_int},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1131 {'c', 1, 0, nu_char, np_char},
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1132 {'s', 1, 0, NULL},
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1133 {'p', 1, 0, NULL},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1134 {'h', 2, 0, lu_int, lp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1135 {'H', 2, 0, lu_uint, lp_uint},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1136 {'i', 4, 0, lu_int, lp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1137 {'I', 4, 0, lu_uint, lp_uint},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1138 {'l', 4, 0, lu_int, lp_int},
4846 972026d47274 Added better handling of unsigned longs -- a Python long returned by Guido van Rossum <guido@python.org> parents: 4842 diff changeset	1139 {'L', 4, 0, lu_uint, lp_uint},
18084 bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1140 {'q', 8, 0, lu_longlong, lp_longlong},
bbcdbd8f4469 Added q/Q standard (x-platform 8-byte ints) mode in struct module. Tim Peters <tim.peters@gmail.com> parents: 18079 diff changeset	1141 {'Q', 8, 0, lu_ulonglong, lp_ulonglong},
4858 198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1142 {'f', 4, 0, lu_float, lp_float},
198989ee36d5 Support float and double in non-native formats. Guido van Rossum <guido@python.org> parents: 4846 diff changeset	1143 {'d', 8, 0, lu_double, lp_double},
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1144 {0}
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1145 };
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1146
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1147
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1148 static const formatdef *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1149 whichtable(char **pfmt)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1150 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1151 const char fmt = (pfmt)++; /* May be backed out of later */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1152 switch (*fmt) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1153 case '<':
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1154 return lilendian_table;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1155 case '>':
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1156 case '!': /* Network byte order is big-endian */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1157 return bigendian_table;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1158 case '=': { /* Host byte order -- different from native in aligment! */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1159 int n = 1;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1160 char p = (char ) &n;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1161 if (*p == 1)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1162 return lilendian_table;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1163 else
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1164 return bigendian_table;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1165 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1166 default:
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1167 --pfmt; / Back out of pointer increment */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1168 /* Fall through */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1169 case '@':
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1170 return native_table;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1171 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1172 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1173
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1174
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1175 /* Get the table entry for a format code */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1176
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1177 static const formatdef *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1178 getentry(int c, const formatdef *f)
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1179 {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1180 for (; f->format != '\0'; f++) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1181 if (f->format == c) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1182 return f;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1183 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1184 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1185 PyErr_SetString(StructError, "bad char in struct format");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1186 return NULL;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1187 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1188
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1189
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1190 /* Align a size according to a format code */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1191
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1192 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1193 align(int size, int c, const formatdef *e)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1194 {
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1195 if (e->format == c) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1196 if (e->alignment) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1197 size = ((size + e->alignment - 1)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1198 / e->alignment)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1199 * e->alignment;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1200 }
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1201 }
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1202 return size;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1203 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1204
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1205
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1206 /* calculate the size of a format string */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1207
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1208 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1209 calcsize(const char fmt, const formatdef f)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1210 {
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1211 const formatdef *e;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1212 const char *s;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1213 char c;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1214 int size, num, itemsize, x;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1215
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1216 s = fmt;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1217 size = 0;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1218 while ((c = *s++) != '\0') {
7982 a909a2869ac5 Make new gcc -Wall happy Guido van Rossum <guido@python.org> parents: 6927 diff changeset	1219 if (isspace((int)c))
6167 9e432468f756 Ignore whitespace between formats (not internal to a count+format). Guido van Rossum <guido@python.org> parents: 5318 diff changeset	1220 continue;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1221 if ('0' <= c && c <= '9') {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1222 num = c - '0';
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1223 while ('0' <= (c = *s++) && c <= '9') {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1224 x = num*10 + (c - '0');
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1225 if (x/10 != num) {
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1226 PyErr_SetString(
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1227 StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1228 "overflow in item count");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1229 return -1;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1230 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1231 num = x;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1232 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1233 if (c == '\0')
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1234 break;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1235 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1236 else
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1237 num = 1;
18079 bc05b0b5e057 Trimmed trailing whitespace. Tim Peters <tim.peters@gmail.com> parents: 18078 diff changeset	1238
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1239 e = getentry(c, f);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1240 if (e == NULL)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1241 return -1;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1242 itemsize = e->size;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1243 size = align(size, c, e);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1244 x = num * itemsize;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1245 size += x;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1246 if (x/itemsize != num \|\| size < 0) {
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1247 PyErr_SetString(StructError,
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	1248 "total struct size too long");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1249 return -1;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1250 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1251 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1252
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1253 return size;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1254 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1255
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1256
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1257 static char calcsize__doc__[] = "\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1258 calcsize(fmt) -> int\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1259 Return size of C struct described by format string fmt.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1260 See struct.__doc__ for more on format strings.";
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1261
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1262 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1263 struct_calcsize(PyObject self, PyObject args)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1264 {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1265 char *fmt;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1266 const formatdef *f;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1267 int size;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1268
11882 dc65c5f6ad7c Massive patch by Skip Montanaro to add ":name" to as many Guido van Rossum <guido@python.org> parents: 9588 diff changeset	1269 if (!PyArg_ParseTuple(args, "s:calcsize", &fmt))
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1270 return NULL;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1271 f = whichtable(&fmt);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1272 size = calcsize(fmt, f);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1273 if (size < 0)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1274 return NULL;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1275 return PyInt_FromLong((long)size);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1276 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1277
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1278
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1279 static char pack__doc__[] = "\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1280 pack(fmt, v1, v2, ...) -> string\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1281 Return string containing values v1, v2, ... packed according to fmt.\n\
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1282 See struct.__doc__ for more on format strings.";
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1283
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1284 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1285 struct_pack(PyObject self, PyObject args)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1286 {
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1287 const formatdef f, e;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1288 PyObject format, result, *v;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1289 char *fmt;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1290 int size, num;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1291 int i, n;
4867 e3f2ab0b0aa1 Fill pad bytes with zeros (fixing a bug dating from the very first version!). Guido van Rossum <guido@python.org> parents: 4865 diff changeset	1292 char s, res, restart, nres;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1293 char c;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1294
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1295 if (args == NULL \|\| !PyTuple_Check(args) \|\|
cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1296 (n = PyTuple_Size(args)) < 1)
25366 0b68d810a8be Backport 2.57 from trunk: Guido van Rossum <guido@python.org> parents: 20654 diff changeset	1297 {
18079 bc05b0b5e057 Trimmed trailing whitespace. Tim Peters <tim.peters@gmail.com> parents: 18078 diff changeset	1298 PyErr_SetString(PyExc_TypeError,
12814 b1b260a2de98 Michael Hudson <mwh21@cam.ac.uk>: Fred Drake <fdrake@acm.org> parents: 11882 diff changeset	1299 "struct.pack requires at least one argument");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1300 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1301 }
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1302 format = PyTuple_GetItem(args, 0);
cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1303 if (!PyArg_Parse(format, "s", &fmt))
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1304 return NULL;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1305 f = whichtable(&fmt);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1306 size = calcsize(fmt, f);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1307 if (size < 0)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1308 return NULL;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1309 result = PyString_FromStringAndSize((char *)NULL, size);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1310 if (result == NULL)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1311 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1312
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1313 s = fmt;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1314 i = 1;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1315 res = restart = PyString_AsString(result);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1316
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1317 while ((c = *s++) != '\0') {
7982 a909a2869ac5 Make new gcc -Wall happy Guido van Rossum <guido@python.org> parents: 6927 diff changeset	1318 if (isspace((int)c))
6167 9e432468f756 Ignore whitespace between formats (not internal to a count+format). Guido van Rossum <guido@python.org> parents: 5318 diff changeset	1319 continue;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1320 if ('0' <= c && c <= '9') {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1321 num = c - '0';
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1322 while ('0' <= (c = *s++) && c <= '9')
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1323 num = num*10 + (c - '0');
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1324 if (c == '\0')
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1325 break;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1326 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1327 else
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1328 num = 1;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1329
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1330 e = getentry(c, f);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1331 if (e == NULL)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1332 goto fail;
4867 e3f2ab0b0aa1 Fill pad bytes with zeros (fixing a bug dating from the very first version!). Guido van Rossum <guido@python.org> parents: 4865 diff changeset	1333 nres = restart + align((int)(res-restart), c, e);
e3f2ab0b0aa1 Fill pad bytes with zeros (fixing a bug dating from the very first version!). Guido van Rossum <guido@python.org> parents: 4865 diff changeset	1334 /* Fill padd bytes with zeros */
e3f2ab0b0aa1 Fill pad bytes with zeros (fixing a bug dating from the very first version!). Guido van Rossum <guido@python.org> parents: 4865 diff changeset	1335 while (res < nres)
e3f2ab0b0aa1 Fill pad bytes with zeros (fixing a bug dating from the very first version!). Guido van Rossum <guido@python.org> parents: 4865 diff changeset	1336 *res++ = '\0';
4842 84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1337 if (num == 0 && c != 's')
84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1338 continue;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1339 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1340 if (c == 'x') {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1341 /* doesn't consume arguments */
4842 84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1342 memset(res, '\0', num);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1343 res += num;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1344 break;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1345 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1346 if (i >= n) {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1347 PyErr_SetString(StructError,
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1348 "insufficient arguments to pack");
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1349 goto fail;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1350 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1351 v = PyTuple_GetItem(args, i++);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1352 if (v == NULL)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1353 goto fail;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1354 if (c == 's') {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1355 /* num is string size, not repeat count */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1356 int n;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1357 if (!PyString_Check(v)) {
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1358 PyErr_SetString(StructError,
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1359 "argument for 's' must be a string");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1360 goto fail;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1361 }
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1362 n = PyString_Size(v);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1363 if (n > num)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1364 n = num;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1365 if (n > 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1366 memcpy(res, PyString_AsString(v), n);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1367 if (n < num)
4842 84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1368 memset(res+n, '\0', num-n);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1369 res += num;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1370 break;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1371 }
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1372 else if (c == 'p') {
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1373 /* num is string size + 1,
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1374 to fit in the count byte */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1375 int n;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1376 num--; /* now num is max string size */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1377 if (!PyString_Check(v)) {
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1378 PyErr_SetString(StructError,
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1379 "argument for 'p' must be a string");
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1380 goto fail;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1381 }
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1382 n = PyString_Size(v);
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1383 if (n > num)
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1384 n = num;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1385 if (n > 0)
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1386 memcpy(res+1, PyString_AsString(v), n);
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1387 if (n < num)
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1388 /* no real need, just to be nice */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1389 memset(res+1+n, '\0', num-n);
19924 01f66f5db326 The 'p' (Pascal string) pack code acts unreasonably when the string size Tim Peters <tim.peters@gmail.com> parents: 18705 diff changeset	1390 if (n > 255)
01f66f5db326 The 'p' (Pascal string) pack code acts unreasonably when the string size Tim Peters <tim.peters@gmail.com> parents: 18705 diff changeset	1391 n = 255;
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1392 res++ = n; / store the length byte */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1393 res += num;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1394 break;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1395 }
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1396 else {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1397 if (e->pack(res, v, e) < 0)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1398 goto fail;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1399 res += e->size;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1400 }
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1401 } while (--num > 0);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1402 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1403
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1404 if (i < n) {
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1405 PyErr_SetString(StructError,
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1406 "too many arguments for pack format");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1407 goto fail;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1408 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1409
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1410 return result;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1411
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1412 fail:
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1413 Py_DECREF(result);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1414 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1415 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1416
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1417
6927 52125ce376a4 Oops, left in a non-standard multi-line doc string that GCC finds okay Guido van Rossum <guido@python.org> parents: 6922 diff changeset	1418 static char unpack__doc__[] = "\
52125ce376a4 Oops, left in a non-standard multi-line doc string that GCC finds okay Guido van Rossum <guido@python.org> parents: 6922 diff changeset	1419 unpack(fmt, string) -> (v1, v2, ...)\n\
52125ce376a4 Oops, left in a non-standard multi-line doc string that GCC finds okay Guido van Rossum <guido@python.org> parents: 6922 diff changeset	1420 Unpack the string, containing packed C structure data, according\n\
52125ce376a4 Oops, left in a non-standard multi-line doc string that GCC finds okay Guido van Rossum <guido@python.org> parents: 6922 diff changeset	1421 to fmt. Requires len(string)==calcsize(fmt).\n\
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1422 See struct.__doc__ for more on format strings.";
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1423
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1424 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13447 diff changeset	1425 struct_unpack(PyObject self, PyObject args)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1426 {
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1427 const formatdef f, e;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1428 char str, start, fmt, s;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1429 char c;
4865 f5073e24147c Scratch the ears of gcc -Wall. Barry Warsaw <barry@python.org> parents: 4861 diff changeset	1430 int len, size, num;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1431 PyObject res, v;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1432
11882 dc65c5f6ad7c Massive patch by Skip Montanaro to add ":name" to as many Guido van Rossum <guido@python.org> parents: 9588 diff changeset	1433 if (!PyArg_ParseTuple(args, "ss#:unpack", &fmt, &start, &len))
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1434 return NULL;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1435 f = whichtable(&fmt);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1436 size = calcsize(fmt, f);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1437 if (size < 0)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1438 return NULL;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1439 if (size != len) {
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1440 PyErr_SetString(StructError,
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1441 "unpack str size does not match format");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1442 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1443 }
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1444 res = PyList_New(0);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1445 if (res == NULL)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1446 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1447 str = start;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1448 s = fmt;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1449 while ((c = *s++) != '\0') {
7982 a909a2869ac5 Make new gcc -Wall happy Guido van Rossum <guido@python.org> parents: 6927 diff changeset	1450 if (isspace((int)c))
6167 9e432468f756 Ignore whitespace between formats (not internal to a count+format). Guido van Rossum <guido@python.org> parents: 5318 diff changeset	1451 continue;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1452 if ('0' <= c && c <= '9') {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1453 num = c - '0';
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1454 while ('0' <= (c = *s++) && c <= '9')
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1455 num = num*10 + (c - '0');
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1456 if (c == '\0')
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1457 break;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1458 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1459 else
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1460 num = 1;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1461
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1462 e = getentry(c, f);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1463 if (e == NULL)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1464 goto fail;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1465 str = start + align((int)(str-start), c, e);
4842 84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1466 if (num == 0 && c != 's')
84679f7bbe6d Fix the first bugs... treatment of 0 count was wrong, and memchr() Guido van Rossum <guido@python.org> parents: 4841 diff changeset	1467 continue;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1468
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1469 do {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1470 if (c == 'x') {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1471 str += num;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1472 break;
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1473 }
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1474 if (c == 's') {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1475 /* num is string size, not repeat count */
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1476 v = PyString_FromStringAndSize(str, num);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1477 if (v == NULL)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1478 goto fail;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1479 str += num;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1480 num = 0;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1481 }
6241 ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1482 else if (c == 'p') {
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1483 /* num is string buffer size,
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1484 not repeat count */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1485 int n = (unsigned char)str;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1486 /* first byte (unsigned) is string size */
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1487 if (n >= num)
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1488 n = num-1;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1489 v = PyString_FromStringAndSize(str+1, n);
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1490 if (v == NULL)
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1491 goto fail;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1492 str += num;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1493 num = 0;
ab64344e87db Contribution by Hannu Krosing (with some changes). Guido van Rossum <guido@python.org> parents: 6167 diff changeset	1494 }
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1495 else {
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1496 v = e->unpack(str, e);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1497 if (v == NULL)
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1498 goto fail;
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1499 str += e->size;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1500 }
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1501 if (v == NULL \|\| PyList_Append(res, v) < 0)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1502 goto fail;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1503 Py_DECREF(v);
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1504 } while (--num > 0);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1505 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1506
4841 a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1507 v = PyList_AsTuple(res);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1508 Py_DECREF(res);
a7b9c7c81337 Pretty much rewritten to fulfull several long-standing wishes: Guido van Rossum <guido@python.org> parents: 4705 diff changeset	1509 return v;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1510
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1511 fail:
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1512 Py_DECREF(res);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1513 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1514 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1515
976 31b018bda7e2 unpack() now returns a tuple, not a list Guido van Rossum <guido@python.org> parents: 960 diff changeset	1516
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1517 /* List of functions */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1518
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1519 static PyMethodDef struct_methods[] = {
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1520 {"calcsize", struct_calcsize, METH_VARARGS, calcsize__doc__},
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1521 {"pack", struct_pack, METH_VARARGS, pack__doc__},
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1522 {"unpack", struct_unpack, METH_VARARGS, unpack__doc__},
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1523 {NULL, NULL} /* sentinel */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1524 };
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1525
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1526
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1527 /* Module initialization */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1528
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 9123 diff changeset	1529 DL_EXPORT(void)
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13502 diff changeset	1530 initstruct(void)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1531 {
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1532 PyObject m, d;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1533
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1534 /* Create the module and add the functions */
6922 7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1535 m = Py_InitModule4("struct", struct_methods, struct__doc__,
7629c4d985bc Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). Guido van Rossum <guido@python.org> parents: 6551 diff changeset	1536 (PyObject*)NULL, PYTHON_API_VERSION);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1537
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1538 /* Add some symbolic constants to the module */
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1539 d = PyModule_GetDict(m);
6367 2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 6241 diff changeset	1540 StructError = PyErr_NewException("struct.error", NULL, NULL);
2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 6241 diff changeset	1541 if (StructError == NULL)
2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 6241 diff changeset	1542 return;
4705 cc525182bbb1 Renamed. Barry Warsaw <barry@python.org> parents: 4503 diff changeset	1543 PyDict_SetItemString(d, "error", StructError);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1544 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/structmodule.c @ 25366:0b68d810a8be 2.2