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

annotate Objects/bufferobject.c @ 33073:bfcc4e39fc45 legacy-trunk

Edward's latest checkins somehow managed to wipe out my previous latest checkins. Reapplying the latter changes.

author	Tim Peters <tim.peters@gmail.com>
date	Mon, 09 Aug 2004 16:43:36 +0000
parents	7a120400888a
children	be8cff4a1eca

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 /* Buffer object implementation */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	3
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	4 #include "Python.h"
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	5
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 typedef struct {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	8 PyObject_HEAD
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	9 PyObject *b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	10 void *b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	11 int b_size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	12 int b_offset;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	13 int b_readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	14 long b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	15 } PyBufferObject;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	18 static int
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	19 get_buf(PyBufferObject self, void ptr, int size)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	20 {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	21 if (self->b_base == NULL) {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	22 assert (ptr != NULL);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	23 *ptr = self->b_ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	24 *size = self->b_size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	25 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	26 else {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	27 int count, offset;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	28 getreadbufferproc proc;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	29 PyBufferProcs *bp = self->b_base->ob_type->tp_as_buffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	30 if ((*bp->bf_getsegcount)(self->b_base, NULL) != 1) {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	31 PyErr_SetString(PyExc_TypeError,
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	32 "single-segment buffer object expected");
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	33 return 0;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	34 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	35 if (self->b_readonly)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	36 proc = bp->bf_getreadbuffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	37 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	38 proc = (getreadbufferproc)bp->bf_getwritebuffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	39 if ((count = (*proc)(self->b_base, 0, ptr)) < 0)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	40 return 0;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	41 /* apply constraints to the start/end */
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	42 if (self->b_offset > count)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	43 offset = count;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	44 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	45 offset = self->b_offset;
31810 7a120400888a Correct code to advance ptr to be well-formed C. Martin v. Löwis <martin@v.loewis.de> parents: 31640 diff changeset	46 (char )ptr = (char **)ptr + offset;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	47 if (self->b_size == Py_END_OF_BUFFER)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	48 *size = count;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	49 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	50 *size = self->b_size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	51 if (offset + *size > count)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	52 *size = count - offset;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	53 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	54 return 1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	55 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	56
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	57
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	58 static PyObject *
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	59 buffer_from_memory(PyObject base, int size, int offset, void ptr,
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	60 int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	61 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	62 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	63
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	64 if (size < 0 && size != Py_END_OF_BUFFER) {
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	65 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	66 "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	67 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	68 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	69
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	70 b = PyObject_NEW(PyBufferObject, &PyBuffer_Type);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	71 if ( b == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	72 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	73
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	74 Py_XINCREF(base);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	75 b->b_base = base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	76 b->b_ptr = ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	77 b->b_size = size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	78 b->b_offset = offset;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	79 b->b_readonly = readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	80 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	81
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	82 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	83 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	84
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	85 static PyObject *
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	86 buffer_from_object(PyObject *base, int size, int offset, int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	87 {
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	88 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	89 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	90 "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	91 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	92 }
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	93
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	94 /* if the base object is another buffer, then try to refer to the
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	95 * base object.
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	96 */
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	97 if ( PyBuffer_Check(base) && (((PyBufferObject *)base)->b_base) ) {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	98 base = ((PyBufferObject *)base)->b_base;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	99 offset = ((PyBufferObject *)base)->b_offset + offset;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	100 }
20565 6f9902ace18d Fix for Bug #216405: Thomas Heller <theller@ctypes.org> parents: 19476 diff changeset	101
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	102 return buffer_from_memory(base, size, offset, NULL, readonly);
9278 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
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 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	107 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	108 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	109 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	110
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	111 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	112 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	113 pb->bf_getsegcount == NULL )
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 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	116 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	117 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	118
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	119 return buffer_from_object(base, size, offset, 1);
9278 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 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	123 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	124 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	125 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	126
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	127 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	128 pb->bf_getwritebuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	129 pb->bf_getsegcount == NULL )
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 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	132 return NULL;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	135 return buffer_from_object(base, size, offset, 0);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	136 }
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 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	139 PyBuffer_FromMemory(void *ptr, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	140 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	141 return buffer_from_memory(NULL, size, 0, ptr, 1);
9278 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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	144 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	145 PyBuffer_FromReadWriteMemory(void *ptr, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	146 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	147 return buffer_from_memory(NULL, size, 0, ptr, 0);
9278 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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	150 PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	151 PyBuffer_New(int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	152 {
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	153 PyObject *o;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	154 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	155
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	156 if (size < 0) {
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	157 PyErr_SetString(PyExc_ValueError,
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	158 "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	159 return NULL;
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	160 }
24898 a869d2de536f Call me anal, but there was a particular phrase that was speading to Guido van Rossum <guido@python.org> parents: 23972 diff changeset	161 /* Inline PyObject_New */
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	162 o = PyObject_MALLOC(sizeof(*b) + size);
f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	163 if ( o == NULL )
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	164 return PyErr_NoMemory();
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	165 b = (PyBufferObject *) PyObject_INIT(o, &PyBuffer_Type);
9278 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 b->b_base = NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	168 b->b_ptr = (void *)(b + 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	169 b->b_size = size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	170 b->b_offset = 0;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	171 b->b_readonly = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	172 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	173
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	174 return o;
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 /* Methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	178
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	179 static PyObject *
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	180 buffer_new(PyTypeObject type, PyObject args, PyObject *kw)
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	181 {
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	182 PyObject *ob;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	183 int offset = 0;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	184 int size = Py_END_OF_BUFFER;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	185
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	186 if ( !PyArg_ParseTuple(args, "O\|ii:buffer", &ob, &offset, &size) )
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	187 return NULL;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	188 return PyBuffer_FromObject(ob, offset, size);
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	189 }
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	190
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	191 PyDoc_STRVAR(buffer_doc,
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	192 "buffer(object [, offset[, size]])\n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	193 \n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	194 Create a new buffer object which references the given object.\n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	195 The buffer will reference a slice of the target object from the\n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	196 start of the object (or at the specified offset). The slice will\n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	197 extend to the end of the target object (or with the specified size).");
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	198
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	199
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	200 static void
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	201 buffer_dealloc(PyBufferObject *self)
9278 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 Py_XDECREF(self->b_base);
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	204 PyObject_DEL(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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	207 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	208 buffer_compare(PyBufferObject self, PyBufferObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	209 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	210 void p1, p2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	211 int len_self, len_other, min_len, cmp;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	212
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	213 if (!get_buf(self, &p1, &len_self))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	214 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	215 if (!get_buf(other, &p2, &len_other))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	216 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	217 min_len = (len_self < len_other) ? len_self : len_other;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	218 if (min_len > 0) {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	219 cmp = memcmp(p1, p2, min_len);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	220 if (cmp != 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	221 return cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	222 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	223 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	224 }
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 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	227 buffer_repr(PyBufferObject *self)
9278 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 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	230
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	231 if ( self->b_base == NULL )
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	232 return PyString_FromFormat("<%s buffer ptr %p, size %d at %p>",
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	233 status,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	234 self->b_ptr,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	235 self->b_size,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	236 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	237 else
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	238 return PyString_FromFormat(
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	239 "<%s buffer for %p, size %d, offset %d at %p>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	240 status,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	241 self->b_base,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	242 self->b_size,
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	243 self->b_offset,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	244 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	245 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	246
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	247 static long
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	248 buffer_hash(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	249 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	250 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	251 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	252 register int len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	253 register unsigned char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	254 register long x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	255
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	256 if ( self->b_hash != -1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	257 return self->b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	258
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	259 /* XXX potential bugs here, a readonly buffer does not imply that the
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	260 * underlying memory is immutable. b_readonly is a necessary but not
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	261 * sufficient condition for a buffer to be hashable. Perhaps it would
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	262 * be better to only allow hashing if the underlying object is known to
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	263 * be immutable (e.g. PyString_Check() is true). Another idea would
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	264 * be to call tp_hash on the underlying object and see if it raises
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	265 * an error. */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	266 if ( !self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	267 {
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	268 PyErr_SetString(PyExc_TypeError,
047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	269 "writable buffers are not hashable");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	270 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	271 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	272
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	273 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	274 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	275 p = (unsigned char *) ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	276 len = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	277 x = *p << 7;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	278 while (--len >= 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	279 x = (1000003x) ^ p++;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	280 x ^= size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	281 if (x == -1)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	282 x = -2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	283 self->b_hash = x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	284 return x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	285 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	286
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	287 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	288 buffer_str(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	289 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	290 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	291 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	292 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	293 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	294 return PyString_FromStringAndSize(ptr, size);
9278 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 /* Sequence methods */
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 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	300 buffer_length(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	301 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	302 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	303 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	304 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	305 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	306 return size;
9278 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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	309 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	310 buffer_concat(PyBufferObject self, PyObject other)
9278 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 PyBufferProcs *pb = other->ob_type->tp_as_buffer;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	313 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	314 char *p;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	315 PyObject *ob;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	316 int size, count;
9278 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 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	319 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	320 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	321 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	322 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	323 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	324 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	325 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	326 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	327 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	328 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	329 "single-segment buffer object expected");
9278 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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	333 if (!get_buf(self, &ptr1, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	334 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	335
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	336 /* optimize special case */
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	337 if ( size == 0 )
9278 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 Py_INCREF(other);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	340 return other;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	343 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &ptr2)) < 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	344 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	345
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	346 ob = PyString_FromStringAndSize(NULL, size + count);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	347 p = PyString_AS_STRING(ob);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	348 memcpy(p, ptr1, size);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	349 memcpy(p + size, ptr2, count);
9278 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 /* there is an extra byte in the string object, so this is safe */
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	352 p[size + count] = '\0';
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	353
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	354 return ob;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	357 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	358 buffer_repeat(PyBufferObject *self, int count)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	359 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	360 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	361 register char *p;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	362 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	363 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	364
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	365 if ( count < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	366 count = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	367 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	368 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	369 ob = PyString_FromStringAndSize(NULL, size * count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	370 if ( ob == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	371 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	372
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	373 p = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	374 while ( count-- )
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 memcpy(p, ptr, size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	377 p += size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	378 }
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 /* 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	381 *p = '\0';
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	382
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	383 return ob;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	386 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	387 buffer_item(PyBufferObject *self, int idx)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	388 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	389 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	390 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	391 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	392 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	393 if ( idx < 0 \|\| idx >= size ) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	394 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	395 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	396 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	397 return PyString_FromStringAndSize((char *)ptr + idx, 1);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	398 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	399
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	400 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	401 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	402 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	403 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	404 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	405 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	406 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	407 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	408 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	409 if ( right < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	410 right = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	411 if ( right > size )
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	412 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	413 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	414 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	415 return PyString_FromStringAndSize((char *)ptr + left,
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	416 right - left);
9278 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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	419 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	420 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	421 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	422 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	423 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	424 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	425 int count;
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 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	428 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	429 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	430 return -1;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	433 if (!get_buf(self, &ptr1, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	434 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	435
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	436 if (idx < 0 \|\| idx >= size) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	437 PyErr_SetString(PyExc_IndexError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	438 "buffer assignment index out of range");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	439 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	440 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	441
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	442 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	443 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	444 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	445 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	446 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	447 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	448 return -1;
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 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	451 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	452 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	453 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	454 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	455 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	456 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	457
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	458 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &ptr2)) < 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	459 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	460 if ( count != 1 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	461 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	462 "right operand must be a single byte");
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	466 ((char )ptr1)[idx] = (char *)ptr2;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	467 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	468 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	469
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	470 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	471 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	472 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	473 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	474 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	475 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	476 int slice_len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	477 int count;
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 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	480 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	481 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	482 return -1;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	485 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	486 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	487 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	488 pb->bf_getsegcount == NULL )
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 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	491 return -1;
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 if ( (*pb->bf_getsegcount)(other, NULL) != 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 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	496 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	497 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	498 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	499 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	500 if (!get_buf(self, &ptr1, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	501 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	502 if ( (count = (*pb->bf_getreadbuffer)(other, 0, &ptr2)) < 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	503 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	504
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	505 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	506 left = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	507 else if ( left > size )
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	508 left = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	509 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	510 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	511 else if ( right > size )
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	512 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	513 slice_len = right - left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	514
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	515 if ( count != slice_len ) {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	516 PyErr_SetString(
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	517 PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	518 "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	519 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	520 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	521
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	522 if ( slice_len )
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	523 memcpy((char *)ptr1 + left, ptr2, slice_len);
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 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	526 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	527
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	528 /* Buffer methods */
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 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	531 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	532 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	533 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	534 if ( idx != 0 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	535 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	536 "accessing non-existent buffer segment");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	537 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	538 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	539 if (!get_buf(self, pp, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	540 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	541 return size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	542 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	543
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	544 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	545 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	546 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	547 if ( self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	548 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	549 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	550 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	551 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	552 return buffer_getreadbuf(self, idx, pp);
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	555 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	556 buffer_getsegcount(PyBufferObject self, int lenp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	557 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	558 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	559 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	560 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	561 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	562 if (lenp)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	563 *lenp = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	564 return 1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	565 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	566
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	567 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	568 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	569 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	570 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	571 int size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	572 if ( idx != 0 ) {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	573 PyErr_SetString(PyExc_SystemError,
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	574 "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	575 return -1;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	576 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	577 if (!get_buf(self, &ptr, &size))
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	578 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	579 pp = (const char )ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	580 return size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	581 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	582
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	583
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	584 static PySequenceMethods buffer_as_sequence = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	585 (inquiry)buffer_length, /sq_length/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	586 (binaryfunc)buffer_concat, /sq_concat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	587 (intargfunc)buffer_repeat, /sq_repeat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	588 (intargfunc)buffer_item, /sq_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	589 (intintargfunc)buffer_slice, /sq_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	590 (intobjargproc)buffer_ass_item, /sq_ass_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	591 (intintobjargproc)buffer_ass_slice, /sq_ass_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	592 };
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 PyBufferProcs buffer_as_buffer = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	595 (getreadbufferproc)buffer_getreadbuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	596 (getwritebufferproc)buffer_getwritebuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	597 (getsegcountproc)buffer_getsegcount,
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	598 (getcharbufferproc)buffer_getcharbuf,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	599 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	600
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	601 PyTypeObject PyBuffer_Type = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	602 PyObject_HEAD_INIT(&PyType_Type)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	603 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	604 "buffer",
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	605 sizeof(PyBufferObject),
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	606 0,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	607 (destructor)buffer_dealloc, /* tp_dealloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	608 0, /* tp_print */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	609 0, /* tp_getattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	610 0, /* tp_setattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	611 (cmpfunc)buffer_compare, /* tp_compare */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	612 (reprfunc)buffer_repr, /* tp_repr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	613 0, /* tp_as_number */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	614 &buffer_as_sequence, /* tp_as_sequence */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	615 0, /* tp_as_mapping */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	616 (hashfunc)buffer_hash, /* tp_hash */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	617 0, /* tp_call */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	618 (reprfunc)buffer_str, /* tp_str */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	619 PyObject_GenericGetAttr, /* tp_getattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	620 0, /* tp_setattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	621 &buffer_as_buffer, /* tp_as_buffer */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	622 Py_TPFLAGS_DEFAULT, /* tp_flags */
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	623 buffer_doc, /* tp_doc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	624 0, /* tp_traverse */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	625 0, /* tp_clear */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	626 0, /* tp_richcompare */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	627 0, /* tp_weaklistoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	628 0, /* tp_iter */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	629 0, /* tp_iternext */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	630 0, /* tp_methods */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	631 0, /* tp_members */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	632 0, /* tp_getset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	633 0, /* tp_base */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	634 0, /* tp_dict */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	635 0, /* tp_descr_get */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	636 0, /* tp_descr_set */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	637 0, /* tp_dictoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	638 0, /* tp_init */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	639 0, /* tp_alloc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	640 buffer_new, /* tp_new */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	641 };

Mercurial > cpython-lru_cache-weakref

annotate Objects/bufferobject.c @ 33073:bfcc4e39fc45 legacy-trunk