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

annotate Objects/bufferobject.c @ 10482:75683fd39e91 legacy-trunk

Test suite for UserList.

author	Guido van Rossum <guido@python.org>
date	Fri, 26 Mar 1999 16:20:45 +0000
parents	62781914fadb
children	fab81df566d0

rev	line source
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	1 /***********************************************************
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	3 The Netherlands.
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	4
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	5 All Rights Reserved
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	6
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	7 Permission to use, copy, modify, and distribute this software and its
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	8 documentation for any purpose and without fee is hereby granted,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	9 provided that the above copyright notice appear in all copies and that
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	10 both that copyright notice and this permission notice appear in
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	11 supporting documentation, and that the names of Stichting Mathematisch
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	12 Centrum or CWI or Corporation for National Research Initiatives or
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	13 CNRI not be used in advertising or publicity pertaining to
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	14 distribution of the software without specific, written prior
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	15 permission.
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	16
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	17 While CWI is the initial source for this software, a modified version
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	18 is made available by the Corporation for National Research Initiatives
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	19 (CNRI) at the Internet address ftp://ftp.python.org.
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	20
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	28 PERFORMANCE OF THIS SOFTWARE.
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	29
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	32 /* Buffer object implementation */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	33
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	34 #include "Python.h"
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	35
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	36
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	37 typedef struct {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	38 PyObject_HEAD
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	39 PyObject *b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	40 void *b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	41 int b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	42 int b_readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	43 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	44 long b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	45 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	46 } PyBufferObject;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	47
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	48
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	49 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	50 _PyBuffer_FromMemory(base, ptr, size, readonly)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	51 PyObject *base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	52 void *ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	53 int size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	54 int readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	55 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	56 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	57
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	58 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	59 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	60 "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	61 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	62 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	63
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	64 b = PyObject_NEW(PyBufferObject, &PyBuffer_Type);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	65 if ( b == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	66 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	67
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	68 Py_XINCREF(base);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	69 b->b_base = base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	70 b->b_ptr = ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	71 b->b_size = size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	72 b->b_readonly = readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	73 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	74 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	75 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	76
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	77 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	78 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	79
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	80 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	81 _PyBuffer_FromObject(base, offset, size, proc, readonly)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	82 PyObject *base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	83 int offset;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	84 int size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	85 getreadbufferproc proc;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	86 int readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	87 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	88 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	89 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	90 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	91
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	92 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	93 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	94 "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	95 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	96 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	97
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	98 if ( (*pb->bf_getsegcount)(base, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	99 {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	100 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	101 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	102 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	103 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	104 if ( (count = (*proc)(base, 0, &p)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	105 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	106
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	107 /* 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	108 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	109 size = count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	110 if ( offset > count )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	111 offset = count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	112 if ( offset + size > count )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	113 size = count - offset;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	114
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	115 /* 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	116 if ( PyBuffer_Check(base) )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	117 base = ((PyBufferObject *)base)->b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	118
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	119 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	120 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	121
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 PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	124 PyBuffer_FromObject(base, offset, size)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	125 PyObject *base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	126 int offset;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	127 int size;
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 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	130
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	131 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	132 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	133 pb->bf_getsegcount == NULL )
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 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	136 return NULL;
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
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	139 return _PyBuffer_FromObject(base, offset, size,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	140 pb->bf_getreadbuffer, 1);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	141 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	142
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	143 PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	144 PyBuffer_FromReadWriteObject(base, offset, size)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	145 PyObject *base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	146 int offset;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	147 int size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	148 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	149 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	150
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	151 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	152 pb->bf_getwritebuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	153 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	154 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	155 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	156 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	157 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	158
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	159 return _PyBuffer_FromObject(base, offset, size,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	160 (getreadbufferproc)pb->bf_getwritebuffer,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	161 0);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	162 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	163
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	164 PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	165 PyBuffer_FromMemory(ptr, size)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	166 void *ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	167 int size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	168 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	169 return _PyBuffer_FromMemory(NULL, ptr, size, 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	170 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	171
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	172 PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	173 PyBuffer_FromReadWriteMemory(ptr, size)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	174 void *ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	175 int size;
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 return _PyBuffer_FromMemory(NULL, ptr, size, 0);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	178 }
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 PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	181 PyBuffer_New(size)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	182 int size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	183 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	184 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	185
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	186 b = (PyBufferObject )malloc(sizeof(b) + size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	187 if ( b == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	188 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	189 b->ob_type = &PyBuffer_Type;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	190 _Py_NewReference((PyObject *)b);
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 b->b_base = NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	193 b->b_ptr = (void *)(b + 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	194 b->b_size = size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	195 b->b_readonly = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	196 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	197 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	198 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	199
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	200 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	201 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	202
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	203 /* Methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	204
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	205 static void
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	206 buffer_dealloc(self)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	207 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	208 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	209 Py_XDECREF(self->b_base);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	210 free((void *)self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	211 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	212
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	213 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	214 buffer_compare(self, other)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	215 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	216 PyBufferObject *other;
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 int len_self = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	219 int len_other = other->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	220 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	221 int cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	222 if (min_len > 0) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	223 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	224 if (cmp != 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	225 return cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	226 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	227 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	228 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	229
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	230 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	231 buffer_repr(self)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	232 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	233 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	234 char buf[300];
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	235 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	236
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	237 if ( self->b_base == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	238 {
9286 bc5150652edc Make gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 9278 diff changeset	239 sprintf(buf, "<%s buffer ptr %lx, size %d at %lx>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	240 status,
9286 bc5150652edc Make gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 9278 diff changeset	241 (long)self->b_ptr,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	242 self->b_size,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	243 (long)self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	244 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	245 else
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	246 {
9286 bc5150652edc Make gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 9278 diff changeset	247 sprintf(buf, "<%s buffer for %lx, ptr %lx, size %d at %lx>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	248 status,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	249 (long)self->b_base,
9286 bc5150652edc Make gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 9278 diff changeset	250 (long)self->b_ptr,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	251 self->b_size,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	252 (long)self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	253 }
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_FromString(buf);
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 static long
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	259 buffer_hash(self)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	260 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	261 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	262 register int len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	263 register unsigned char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	264 register long x;
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 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	267 if ( self->b_hash != -1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	268 return self->b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	269 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	270
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	271 if ( !self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	272 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	273 /* ### use different wording, since this is conditional? */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	274 PyErr_SetString(PyExc_TypeError, "unhashable type");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	275 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	276 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	277
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	278 len = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	279 p = (unsigned char *) self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	280 x = *p << 7;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	281 while (--len >= 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	282 x = (1000003x) ^ p++;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	283 x ^= self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	284 if (x == -1)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	285 x = -2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	286 #ifdef CACHE_HASH
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	287 self->b_hash = x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	288 #endif
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	289 return x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	290 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	291
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	292 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	293 buffer_str(self)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	294 PyBufferObject *self;
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 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	297 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	298
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	299 /* Sequence methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	300
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	301 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	302 buffer_length(self)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	303 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	304 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	305 return self->b_size;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	308 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	309 buffer_concat(self, other)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	310 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	311 PyObject *other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	312 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	313 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	314 char *p1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	315 void *p2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	316 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	317 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	318
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	319 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	320 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	321 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	322 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	323 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	324 return NULL;
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 ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	327 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	328 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	329 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	330 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	331 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	332 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	333
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	334 /* optimize special case */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	335 if ( self->b_size == 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	336 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	337 Py_INCREF(other);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	338 return other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	339 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	340
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	341 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	342 return NULL;
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 /* optimize special case */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	345 if ( count == 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	346 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	347 Py_INCREF(self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	348 return (PyObject *)self;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	351 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	352 p1 = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	353 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	354 memcpy(p1 + self->b_size, p2, count);
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 /* 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	357 p1[self->b_size + count] = '\0';
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 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	360 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	361
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	362 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	363 buffer_repeat(self, count)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	364 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	365 int count;
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 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	368 register char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	369 void *ptr = self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	370 int size = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	371
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	372 if ( count < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	373 count = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	374 ob = PyString_FromStringAndSize(NULL, size * count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	375 if ( ob == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	376 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	377
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	378 p = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	379 while ( count-- )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	380 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	381 memcpy(p, ptr, size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	382 p += size;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	385 /* 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	386 *p = '\0';
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	387
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	388 return ob;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	391 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	392 buffer_item(self, idx)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	393 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	394 int idx;
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 if ( idx < 0 \|\| idx >= self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	397 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	398 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	399 return 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 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	402 }
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 static PyObject *
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	405 buffer_slice(self, left, right)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	406 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	407 int left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	408 int right;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	409 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	410 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	411 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	412 if ( right < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	413 right = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	414 if ( right > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	415 right = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	416 if ( left == 0 && right == self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	417 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	418 /* same as self */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	419 Py_INCREF(self);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	420 return (PyObject *)self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	421 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	422 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	423 right = left;
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	424 return PyString_FromStringAndSize((char *)self->b_ptr + left,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	425 right - left);
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	428 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	429 buffer_ass_item(self, idx, other)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	430 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	431 int idx;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	432 PyObject *other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	433 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	434 PyBufferProcs *pb;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	435 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	436 int count;
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 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	439 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	440 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	441 return -1;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	444 if (idx < 0 \|\| idx >= self->b_size) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	445 PyErr_SetString(PyExc_IndexError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	446 "buffer assignment index out of range");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	447 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	448 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	449
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	450 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	451 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	452 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	453 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	454 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	455 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	456 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	457 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	458 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	459 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	460 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	461 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	462 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	463 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	464 }
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 = (*pb->bf_getreadbuffer)(other, 0, &p)) < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	467 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	468 if ( count != 1 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	469 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	470 "right operand must be a single byte");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	471 return -1;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	474 ((char )self->b_ptr)[idx] = (char *)p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	475 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	476 }
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 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	479 buffer_ass_slice(self, left, right, other)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	480 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	481 int left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	482 int right;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	483 PyObject *other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	484 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	485 PyBufferProcs *pb;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	486 void *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	487 int slice_len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	488 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	489
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	490 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	491 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	492 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	493 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	494 }
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 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	497 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	498 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	499 pb->bf_getsegcount == NULL )
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 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	502 return -1;
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 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	505 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	506 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	507 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	508 "single-segment buffer object expected");
9278 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 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	512 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	513
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	514 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	515 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	516 else if ( left > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	517 left = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	518 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	519 right = left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	520 else if ( right > self->b_size )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	521 right = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	522 slice_len = right - left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	523
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	524 if ( count != slice_len ) {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	525 PyErr_SetString(
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	526 PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	527 "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	528 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	529 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	530
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	531 if ( slice_len )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	532 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	533
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	534 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	535 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	536
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	537 /* Buffer methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	538
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	539 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	540 buffer_getreadbuf(self, idx, pp)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	541 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	542 int idx;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	543 void ** pp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	544 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	545 if ( idx != 0 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	546 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	547 "accessing non-existent buffer segment");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	548 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	549 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	550 *pp = self->b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	551 return self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	552 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	553
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	554 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	555 buffer_getwritebuf(self, idx, pp)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	556 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	557 int idx;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	558 void ** pp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	559 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	560 if ( self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	561 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	562 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	563 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	564 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	565 return buffer_getreadbuf(self, idx, pp);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	566 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	567
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	568 static int
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	569 buffer_getsegcount(self, lenp)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	570 PyBufferObject *self;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	571 int *lenp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	572 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	573 if ( lenp )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	574 *lenp = self->b_size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	575 return 1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	576 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	577
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	578 static int
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	579 buffer_getcharbuf(self, idx, pp)
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	580 PyBufferObject *self;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	581 int idx;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	582 const char ** pp;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	583 {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	584 if ( idx != 0 ) {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	585 PyErr_SetString(PyExc_SystemError,
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	586 "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	587 return -1;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	588 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	589 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	590 return self->b_size;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	591 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	592
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	593
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	594 static PySequenceMethods buffer_as_sequence = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	595 (inquiry)buffer_length, /sq_length/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	596 (binaryfunc)buffer_concat, /sq_concat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	597 (intargfunc)buffer_repeat, /sq_repeat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	598 (intargfunc)buffer_item, /sq_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	599 (intintargfunc)buffer_slice, /sq_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	600 (intobjargproc)buffer_ass_item, /sq_ass_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	601 (intintobjargproc)buffer_ass_slice, /sq_ass_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	602 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	603
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	604 static PyBufferProcs buffer_as_buffer = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	605 (getreadbufferproc)buffer_getreadbuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	606 (getwritebufferproc)buffer_getwritebuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	607 (getsegcountproc)buffer_getsegcount,
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	608 (getcharbufferproc)buffer_getcharbuf,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	609 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	610
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	611 PyTypeObject PyBuffer_Type = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	612 PyObject_HEAD_INIT(&PyType_Type)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	613 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	614 "buffer",
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	615 sizeof(PyBufferObject),
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	616 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	617 (destructor)buffer_dealloc, /tp_dealloc/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	618 0, /tp_print/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	619 0, /tp_getattr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	620 0, /tp_setattr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	621 (cmpfunc)buffer_compare, /tp_compare/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	622 (reprfunc)buffer_repr, /tp_repr/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	623 0, /tp_as_number/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	624 &buffer_as_sequence, /tp_as_sequence/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	625 0, /tp_as_mapping/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	626 (hashfunc)buffer_hash, /tp_hash/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	627 0, /tp_call/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	628 (reprfunc)buffer_str, /tp_str/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	629 0, /tp_getattro/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	630 0, /tp_setattro/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	631 &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	632 Py_TPFLAGS_DEFAULT, /tp_flags/
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	633 0, /tp_doc/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	634 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	635

Mercurial > cpython-lru_cache-weakref

annotate Objects/bufferobject.c @ 10482:75683fd39e91 legacy-trunk