cpython-lru_cache-weakref: Objects/bufferobject.c annotate

annotate Objects/bufferobject.c @ 13778:f6e4a9dd67cd legacy-trunk

Rename the "parser" package to "parsers" to be compatible with the PyXML project.

author	Fred Drake <fdrake@acm.org>
date	Mon, 31 Jul 2000 23:59:54 +0000
parents	0409a98cd582
children	f3d5f71ccbb4

rev	line source
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	1 /***********************************************************
13255 916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	2 Copyright (c) 2000, BeOpen.com.
916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	3 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	4 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	5 All rights reserved.
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	6
13255 916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	7 See the file "Misc/COPYRIGHT" for information on usage and
916fb024ce94 Change copyright notice. Guido van Rossum <guido@python.org> parents: 13210 diff changeset	8 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	9 ******************************************************************/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	10
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	11 /* Buffer object implementation */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	12
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	13 #include "Python.h"
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	14
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	15
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	16 typedef struct {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	17 PyObject_HEAD
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	18 PyObject *b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	19 void *b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	20 int b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	21 int b_readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	22 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	23 long b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	24 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	25 } PyBufferObject;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	26
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	27
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	28 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	29 _PyBuffer_FromMemory(PyObject base, void ptr, int size, int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	30 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	31 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	32
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	33 if ( size < 0 ) {
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	34 PyErr_SetString(PyExc_ValueError,
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	35 "size must be zero or positive");
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	36 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	37 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	38
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	39 b = PyObject_NEW(PyBufferObject, &PyBuffer_Type);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	40 if ( b == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	41 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	42
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	43 Py_XINCREF(base);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	44 b->b_base = base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	45 b->b_ptr = ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	46 b->b_size = size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	47 b->b_readonly = readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	48 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	49 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	50 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	51
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	52 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	53 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	54
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	55 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	56 _PyBuffer_FromObject(PyObject *base, int offset, int size,
0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	57 getreadbufferproc proc, int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	58 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	59 PyBufferProcs *pb = base->ob_type->tp_as_buffer;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	60 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	61 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	62
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	63 if ( offset < 0 ) {
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	64 PyErr_SetString(PyExc_ValueError,
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	65 "offset must be zero or positive");
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	66 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	67 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	68
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	69 if ( (*pb->bf_getsegcount)(base, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	70 {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	71 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	72 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	73 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	74 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	75 if ( (count = (*proc)(base, 0, &p)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	76 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	77
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	78 /* apply constraints to the start/end */
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	79 if ( size == Py_END_OF_BUFFER \|\| size < 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	80 size = count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	81 if ( offset > count )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	82 offset = count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	83 if ( offset + size > count )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	84 size = count - offset;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	85
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	86 /* if the base object is another buffer, then "deref" it */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	87 if ( PyBuffer_Check(base) )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	88 base = ((PyBufferObject *)base)->b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	89
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	90 return _PyBuffer_FromMemory(base, (char *)p + offset, size, readonly);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	91 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	92
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	93
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	94 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	95 PyBuffer_FromObject(PyObject *base, int offset, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	96 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	97 PyBufferProcs *pb = base->ob_type->tp_as_buffer;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	98
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	99 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	100 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	101 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	102 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	103 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	104 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	105 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	106
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	107 return _PyBuffer_FromObject(base, offset, size,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	108 pb->bf_getreadbuffer, 1);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	109 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	110
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	111 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	112 PyBuffer_FromReadWriteObject(PyObject *base, int offset, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	113 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	114 PyBufferProcs *pb = base->ob_type->tp_as_buffer;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	115
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	116 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	117 pb->bf_getwritebuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	118 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	119 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	120 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	121 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	122 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	123
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	124 return _PyBuffer_FromObject(base, offset, size,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	125 (getreadbufferproc)pb->bf_getwritebuffer,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	126 0);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	127 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	128
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	129 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	130 PyBuffer_FromMemory(void *ptr, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	131 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	132 return _PyBuffer_FromMemory(NULL, ptr, size, 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	133 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	134
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	135 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	136 PyBuffer_FromReadWriteMemory(void *ptr, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	137 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	138 return _PyBuffer_FromMemory(NULL, ptr, size, 0);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	139 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	140
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	141 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	142 PyBuffer_New(int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	143 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	144 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	145
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	146 if (size < 0) {
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	147 PyErr_SetString(PyExc_ValueError,
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	148 "size must be zero or positive");
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	149 return NULL;
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	150 }
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	151 /* PyObject_New is inlined */
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	152 b = (PyBufferObject ) PyObject_MALLOC(sizeof(b) + size);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	153 if ( b == NULL )
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	154 return PyErr_NoMemory();
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	155 PyObject_INIT((PyObject *)b, &PyBuffer_Type);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	156
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	157 b->b_base = NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	158 b->b_ptr = (void *)(b + 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	159 b->b_size = size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	160 b->b_readonly = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	161 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	162 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	163 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	164
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	165 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	166 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	167
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	168 /* Methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	169
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	170 static void
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	171 buffer_dealloc(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	172 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	173 Py_XDECREF(self->b_base);
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	174 PyObject_DEL(self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	175 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	176
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	177 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	178 buffer_compare(PyBufferObject self, PyBufferObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	179 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	180 int len_self = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	181 int len_other = other->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	182 int min_len = (len_self < len_other) ? len_self : len_other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	183 int cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	184 if (min_len > 0) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	185 cmp = memcmp(self->b_ptr, other->b_ptr, min_len);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	186 if (cmp != 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	187 return cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	188 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	189 return (len_self < len_other) ? -1 : (len_self > len_other) ? 1 : 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	190 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	191
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	192 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	193 buffer_repr(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	194 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	195 char buf[300];
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	196 char *status = self->b_readonly ? "read-only" : "read-write";
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	197
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	198 if ( self->b_base == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	199 {
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	200 sprintf(buf, "<%s buffer ptr %p, size %d at %p>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	201 status,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	202 self->b_ptr,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	203 self->b_size,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	204 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	205 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	206 else
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	207 {
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	208 sprintf(buf, "<%s buffer for %p, ptr %p, size %d at %p>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	209 status,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	210 self->b_base,
ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	211 self->b_ptr,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	212 self->b_size,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	213 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	214 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	215
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	216 return PyString_FromString(buf);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	217 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	218
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	219 static long
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	220 buffer_hash(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	221 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	222 register int len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	223 register unsigned char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	224 register long x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	225
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	226 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	227 if ( self->b_hash != -1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	228 return self->b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	229 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	230
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	231 if ( !self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	232 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	233 /* ### use different wording, since this is conditional? */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	234 PyErr_SetString(PyExc_TypeError, "unhashable type");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	235 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	236 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	237
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	238 len = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	239 p = (unsigned char *) self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	240 x = *p << 7;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	241 while (--len >= 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	242 x = (1000003x) ^ p++;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	243 x ^= self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	244 if (x == -1)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	245 x = -2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	246 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	247 self->b_hash = x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	248 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	249 return x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	250 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	251
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	252 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	253 buffer_str(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	254 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	255 return PyString_FromStringAndSize(self->b_ptr, self->b_size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	256 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	257
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	258 /* Sequence methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	259
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	260 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	261 buffer_length(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	262 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	263 return self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	264 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	265
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	266 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	267 buffer_concat(PyBufferObject self, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	268 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	269 PyBufferProcs *pb = other->ob_type->tp_as_buffer;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	270 char *p1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	271 void *p2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	272 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	273 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	274
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	275 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	276 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	277 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	278 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	279 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	280 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	281 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	282 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	283 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	284 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	285 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	286 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	287 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	288 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	289
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	290 /* optimize special case */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	291 if ( self->b_size == 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	292 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	293 Py_INCREF(other);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	294 return other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	295 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	296
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	297 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &p2)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	298 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	299
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	300 /* optimize special case */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	301 if ( count == 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	302 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	303 Py_INCREF(self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	304 return (PyObject *)self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	305 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	306
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	307 ob = PyString_FromStringAndSize(NULL, self->b_size + count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	308 p1 = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	309 memcpy(p1, self->b_ptr, self->b_size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	310 memcpy(p1 + self->b_size, p2, count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	311
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	312 /* there is an extra byte in the string object, so this is safe */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	313 p1[self->b_size + count] = '\0';
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	314
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	315 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	316 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	317
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	318 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	319 buffer_repeat(PyBufferObject *self, int count)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	320 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	321 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	322 register char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	323 void *ptr = self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	324 int size = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	325
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	326 if ( count < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	327 count = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	328 ob = PyString_FromStringAndSize(NULL, size * count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	329 if ( ob == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	330 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	331
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	332 p = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	333 while ( count-- )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	334 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	335 memcpy(p, ptr, size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	336 p += size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	337 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	338
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	339 /* there is an extra byte in the string object, so this is safe */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	340 *p = '\0';
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	341
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	342 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	343 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	344
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	345 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	346 buffer_item(PyBufferObject *self, int idx)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	347 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	348 if ( idx < 0 \|\| idx >= self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	349 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	350 PyErr_SetString(PyExc_IndexError, "buffer index out of range");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	351 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	352 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	353 return PyString_FromStringAndSize((char *)self->b_ptr + idx, 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	354 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	355
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	356 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	357 buffer_slice(PyBufferObject *self, int left, int right)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	358 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	359 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	360 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	361 if ( right < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	362 right = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	363 if ( right > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	364 right = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	365 if ( left == 0 && right == self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	366 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	367 /* same as self */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	368 Py_INCREF(self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	369 return (PyObject *)self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	370 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	371 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	372 right = left;
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	373 return PyString_FromStringAndSize((char *)self->b_ptr + left,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	374 right - left);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	375 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	376
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	377 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	378 buffer_ass_item(PyBufferObject self, int idx, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	379 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	380 PyBufferProcs *pb;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	381 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	382 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	383
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	384 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	385 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	386 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	387 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	388 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	389
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	390 if (idx < 0 \|\| idx >= self->b_size) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	391 PyErr_SetString(PyExc_IndexError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	392 "buffer assignment index out of range");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	393 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	394 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	395
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	396 pb = other ? other->ob_type->tp_as_buffer : NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	397 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	398 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	399 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	400 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	401 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	402 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	403 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	404 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	405 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	406 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	407 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	408 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	409 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	410 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	411
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	412 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &p)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	413 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	414 if ( count != 1 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	415 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	416 "right operand must be a single byte");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	417 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	418 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	419
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	420 ((char )self->b_ptr)[idx] = (char *)p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	421 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	422 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	423
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	424 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	425 buffer_ass_slice(PyBufferObject self, int left, int right, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	426 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	427 PyBufferProcs *pb;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	428 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	429 int slice_len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	430 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	431
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	432 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	433 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	434 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	435 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	436 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	437
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	438 pb = other ? other->ob_type->tp_as_buffer : NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	439 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	440 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	441 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	442 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	443 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	444 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	445 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	446 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	447 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	448 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	449 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	450 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	451 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	452 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	453 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &p)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	454 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	455
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	456 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	457 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	458 else if ( left > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	459 left = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	460 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	461 right = left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	462 else if ( right > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	463 right = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	464 slice_len = right - left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	465
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	466 if ( count != slice_len ) {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	467 PyErr_SetString(
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	468 PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	469 "right operand length must match slice length");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	470 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	471 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	472
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	473 if ( slice_len )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	474 memcpy((char *)self->b_ptr + left, p, slice_len);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	475
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	476 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	477 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	478
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	479 /* Buffer methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	480
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	481 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	482 buffer_getreadbuf(PyBufferObject self, int idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	483 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	484 if ( idx != 0 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	485 PyErr_SetString(PyExc_SystemError,
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	486 "accessing non-existent buffer segment");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	487 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	488 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	489 *pp = self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	490 return self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	491 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	492
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	493 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	494 buffer_getwritebuf(PyBufferObject self, int idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	495 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	496 if ( self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	497 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	498 PyErr_SetString(PyExc_TypeError, "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	499 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	500 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	501 return buffer_getreadbuf(self, idx, pp);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	502 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	503
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	504 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	505 buffer_getsegcount(PyBufferObject self, int lenp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	506 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	507 if ( lenp )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	508 *lenp = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	509 return 1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	510 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	511
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	512 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	513 buffer_getcharbuf(PyBufferObject self, int idx, const char *pp)
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	514 {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	515 if ( idx != 0 ) {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	516 PyErr_SetString(PyExc_SystemError,
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	517 "accessing non-existent buffer segment");
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	518 return -1;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	519 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	520 pp = (const char )self->b_ptr;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	521 return self->b_size;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	522 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	523
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	524
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	525 static PySequenceMethods buffer_as_sequence = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	526 (inquiry)buffer_length, /sq_length/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	527 (binaryfunc)buffer_concat, /sq_concat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	528 (intargfunc)buffer_repeat, /sq_repeat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	529 (intargfunc)buffer_item, /sq_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	530 (intintargfunc)buffer_slice, /sq_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	531 (intobjargproc)buffer_ass_item, /sq_ass_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	532 (intintobjargproc)buffer_ass_slice, /sq_ass_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	533 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	534
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	535 static PyBufferProcs buffer_as_buffer = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	536 (getreadbufferproc)buffer_getreadbuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	537 (getwritebufferproc)buffer_getwritebuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	538 (getsegcountproc)buffer_getsegcount,
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	539 (getcharbufferproc)buffer_getcharbuf,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	540 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	541
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	542 PyTypeObject PyBuffer_Type = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	543 PyObject_HEAD_INIT(&PyType_Type)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	544 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	545 "buffer",
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	546 sizeof(PyBufferObject),
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	547 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	548 (destructor)buffer_dealloc, /tp_dealloc/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	549 0, /tp_print/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	550 0, /tp_getattr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	551 0, /tp_setattr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	552 (cmpfunc)buffer_compare, /tp_compare/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	553 (reprfunc)buffer_repr, /tp_repr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	554 0, /tp_as_number/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	555 &buffer_as_sequence, /tp_as_sequence/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	556 0, /tp_as_mapping/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	557 (hashfunc)buffer_hash, /tp_hash/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	558 0, /tp_call/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	559 (reprfunc)buffer_str, /tp_str/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	560 0, /tp_getattro/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	561 0, /tp_setattro/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	562 &buffer_as_buffer, /tp_as_buffer/
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	563 Py_TPFLAGS_DEFAULT, /tp_flags/
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	564 0, /tp_doc/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	565 };

Mercurial > cpython-lru_cache-weakref

annotate Objects/bufferobject.c @ 13778:f6e4a9dd67cd legacy-trunk