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

annotate Objects/bufferobject.c @ 36510:0f3894bb2ada legacy-trunk

Support %zd in PyErr_Format and PyString_FromFormat.

author	Martin v. Löwis <martin@v.loewis.de>
date	Thu, 16 Feb 2006 06:54:25 +0000
parents	13e98e369abd
children	1596ff5c79b5

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;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	11 Py_ssize_t b_size;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	12 Py_ssize_t 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
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	19 get_buf(PyBufferObject self, void ptr, Py_ssize_t size)
31640 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 {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	27 Py_ssize_t count, offset;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	28 readbufferproc proc;
31640 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
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	38 proc = (readbufferproc)bp->bf_getwritebuffer;
31640 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 *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	59 buffer_from_memory(PyObject base, Py_ssize_t size, Py_ssize_t offset, void ptr,
31640 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 }
33559 be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	69 if (offset < 0) {
be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	70 PyErr_SetString(PyExc_ValueError,
be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	71 "offset must be zero or positive");
be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	72 return NULL;
be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	73 }
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	74
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	75 b = PyObject_NEW(PyBufferObject, &PyBuffer_Type);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	76 if ( b == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	77 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	78
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	79 Py_XINCREF(base);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	80 b->b_base = base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	81 b->b_ptr = ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	82 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	83 b->b_offset = offset;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	84 b->b_readonly = readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	85 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	86
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	87 return (PyObject *) b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	88 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	89
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	90 static PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	91 buffer_from_object(PyObject *base, Py_ssize_t size, Py_ssize_t offset, int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	92 {
33560 97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	93 if (offset < 0) {
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	94 PyErr_SetString(PyExc_ValueError,
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	95 "offset must be zero or positive");
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	96 return NULL;
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	97 }
33559 be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	98 if ( PyBuffer_Check(base) && (((PyBufferObject *)base)->b_base) ) {
be8cff4a1eca Fix buffer offset calculation (need to compute it before changing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31810 diff changeset	99 /* another buffer, refer to the base object */
33560 97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	100 PyBufferObject b = (PyBufferObject )base;
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	101 if (b->b_size != Py_END_OF_BUFFER) {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	102 Py_ssize_t base_size = b->b_size - offset;
33560 97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	103 if (base_size < 0)
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	104 base_size = 0;
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	105 if (size == Py_END_OF_BUFFER \|\| size > base_size)
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	106 size = base_size;
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	107 }
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	108 offset += b->b_offset;
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	109 base = b->b_base;
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	110 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	111 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	112 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	113
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	114
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	115 PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	116 PyBuffer_FromObject(PyObject *base, Py_ssize_t offset, Py_ssize_t size)
9278 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 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	119
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	120 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	121 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	122 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	123 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	124 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	125 return NULL;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	128 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	129 }
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 PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	132 PyBuffer_FromReadWriteObject(PyObject *base, Py_ssize_t offset, Py_ssize_t size)
9278 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 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	135
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	136 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	137 pb->bf_getwritebuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	138 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	139 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	140 PyErr_SetString(PyExc_TypeError, "buffer object expected");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	141 return NULL;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	144 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	145 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	146
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	147 PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	148 PyBuffer_FromMemory(void *ptr, Py_ssize_t size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	149 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	150 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	151 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	152
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	153 PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	154 PyBuffer_FromReadWriteMemory(void *ptr, Py_ssize_t size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	155 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	156 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	157 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	158
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	159 PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	160 PyBuffer_New(Py_ssize_t size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	161 {
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	162 PyObject *o;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	163 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	164
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	165 if (size < 0) {
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	166 PyErr_SetString(PyExc_ValueError,
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	167 "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	168 return NULL;
fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	169 }
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	170 /* XXX: check for overflow in multiply */
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	171 /* Inline PyObject_New */
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	172 o = PyObject_MALLOC(sizeof(*b) + size);
f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	173 if ( o == NULL )
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	174 return PyErr_NoMemory();
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	175 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	176
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	177 b->b_base = NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	178 b->b_ptr = (void *)(b + 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	179 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	180 b->b_offset = 0;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	181 b->b_readonly = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	182 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	183
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	184 return o;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	185 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	186
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	187 /* Methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	188
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	189 static PyObject *
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	190 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	191 {
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	192 PyObject *ob;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	193 Py_ssize_t offset = 0;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	194 Py_ssize_t size = Py_END_OF_BUFFER;
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	195
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33560 diff changeset	196 if (!_PyArg_NoKeywords("buffer()", kw))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33560 diff changeset	197 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33560 diff changeset	198
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	199 if (!PyArg_ParseTuple(args, "O\|ll:buffer", &ob, &offset, &size))
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	200 return NULL;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	201 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	202 }
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	203
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	204 PyDoc_STRVAR(buffer_doc,
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	205 "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	206 \n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	207 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	208 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	209 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	210 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	211
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	212
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	213 static void
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	214 buffer_dealloc(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	215 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	216 Py_XDECREF(self->b_base);
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	217 PyObject_DEL(self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	218 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	219
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	220 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	221 buffer_compare(PyBufferObject self, PyBufferObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	222 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	223 void p1, p2;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	224 Py_ssize_t len_self, len_other, min_len;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	225 int cmp;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	226
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	227 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	228 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	229 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	230 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	231 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	232 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	233 cmp = memcmp(p1, p2, min_len);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	234 if (cmp != 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	235 return cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	236 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	237 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	238 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	239
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	240 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	241 buffer_repr(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	242 {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	243 const char *status = self->b_readonly ? "read-only" : "read-write";
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	244
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	245 if ( self->b_base == NULL )
36510 0f3894bb2ada Support %zd in PyErr_Format and PyString_FromFormat. Martin v. Löwis <martin@v.loewis.de> parents: 36509 diff changeset	246 return PyString_FromFormat("<%s buffer ptr %p, size %zd at %p>",
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	247 status,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	248 self->b_ptr,
36509 13e98e369abd Get rid of compiler warnings (gcc 3.3.4 on x86) Neal Norwitz <nnorwitz@gmail.com> parents: 36501 diff changeset	249 (long)self->b_size,
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	250 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	251 else
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	252 return PyString_FromFormat(
36510 0f3894bb2ada Support %zd in PyErr_Format and PyString_FromFormat. Martin v. Löwis <martin@v.loewis.de> parents: 36509 diff changeset	253 "<%s buffer for %p, size %zd, offset %zd at %p>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	254 status,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	255 self->b_base,
36509 13e98e369abd Get rid of compiler warnings (gcc 3.3.4 on x86) Neal Norwitz <nnorwitz@gmail.com> parents: 36501 diff changeset	256 (long)self->b_size,
13e98e369abd Get rid of compiler warnings (gcc 3.3.4 on x86) Neal Norwitz <nnorwitz@gmail.com> parents: 36501 diff changeset	257 (long)self->b_offset,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	258 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	259 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	260
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	261 static long
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	262 buffer_hash(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	263 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	264 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	265 Py_ssize_t size;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	266 register Py_ssize_t len;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	267 register unsigned char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	268 register long x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	269
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	270 if ( self->b_hash != -1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	271 return self->b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	272
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	273 /* 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	274 * 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	275 * 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	276 * 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	277 * 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	278 * 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	279 * an error. */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	280 if ( !self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	281 {
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	282 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	283 "writable buffers are not hashable");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	284 return -1;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	287 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	288 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	289 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	290 len = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	291 x = *p << 7;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	292 while (--len >= 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	293 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	294 x ^= size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	295 if (x == -1)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	296 x = -2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	297 self->b_hash = x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	298 return x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	299 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	300
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	301 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	302 buffer_str(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	303 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	304 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	305 Py_ssize_t size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	306 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	307 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	308 return PyString_FromStringAndSize(ptr, size);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	309 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	310
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	311 /* Sequence methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	312
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	313 static Py_ssize_t
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	314 buffer_length(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	315 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	316 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	317 Py_ssize_t size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	318 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	319 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	320 return size;
9278 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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	323 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	324 buffer_concat(PyBufferObject self, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	325 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	326 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	327 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	328 char *p;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	329 PyObject *ob;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	330 Py_ssize_t size, count;
9278 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 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	333 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	334 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	335 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	336 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	337 return NULL;
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 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	340 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	341 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	342 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	343 "single-segment buffer object expected");
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 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	346
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	347 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	348 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	349
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	350 /* 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	351 if ( size == 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	352 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	353 Py_INCREF(other);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	354 return other;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	357 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	358 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	359
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	360 ob = PyString_FromStringAndSize(NULL, size + count);
36082 3f358afbb3d3 Check return result for error Neal Norwitz <nnorwitz@gmail.com> parents: 35450 diff changeset	361 if ( ob == NULL )
3f358afbb3d3 Check return result for error Neal Norwitz <nnorwitz@gmail.com> parents: 35450 diff changeset	362 return NULL;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	363 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	364 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	365 memcpy(p + size, ptr2, count);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	366
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	367 /* 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	368 p[size + count] = '\0';
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	369
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	370 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	371 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	372
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	373 static PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	374 buffer_repeat(PyBufferObject *self, Py_ssize_t count)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	375 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	376 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	377 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	378 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	379 Py_ssize_t size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	380
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	381 if ( count < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	382 count = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	383 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	384 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	385 ob = PyString_FromStringAndSize(NULL, size * count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	386 if ( ob == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	387 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	388
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	389 p = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	390 while ( count-- )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	391 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	392 memcpy(p, ptr, size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	393 p += size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	394 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	395
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	396 /* 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	397 *p = '\0';
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 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	400 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	401
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	402 static PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	403 buffer_item(PyBufferObject *self, Py_ssize_t idx)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	404 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	405 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	406 Py_ssize_t size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	407 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	408 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	409 if ( idx < 0 \|\| idx >= size ) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	410 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	411 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	412 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	413 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	414 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	415
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	416 static PyObject *
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	417 buffer_slice(PyBufferObject *self, Py_ssize_t left, Py_ssize_t right)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	418 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	419 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	420 Py_ssize_t size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	421 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	422 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	423 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	424 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	425 if ( right < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	426 right = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	427 if ( right > size )
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	428 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	429 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	430 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	431 return PyString_FromStringAndSize((char *)ptr + left,
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	432 right - left);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	433 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	434
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	435 static int
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	436 buffer_ass_item(PyBufferObject self, Py_ssize_t idx, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	437 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	438 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	439 void ptr1, ptr2;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	440 Py_ssize_t size;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	441 Py_ssize_t count;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	442
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	443 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	444 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	445 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	446 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	447 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	448
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	449 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	450 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	451
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	452 if (idx < 0 \|\| idx >= size) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	453 PyErr_SetString(PyExc_IndexError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	454 "buffer assignment index out of range");
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	458 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	459 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	460 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	461 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	462 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	463 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	464 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	465 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	466 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	467 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	468 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	469 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	470 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	471 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	472 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	473
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	474 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	475 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	476 if ( count != 1 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	477 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	478 "right operand must be a single byte");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	479 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	480 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	481
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	482 ((char )ptr1)[idx] = (char *)ptr2;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	483 return 0;
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	486 static int
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	487 buffer_ass_slice(PyBufferObject self, Py_ssize_t left, Py_ssize_t right, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	488 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	489 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	490 void ptr1, ptr2;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	491 Py_ssize_t size;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	492 Py_ssize_t slice_len;
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	493 Py_ssize_t count;
9278 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 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	496 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	497 "buffer is read-only");
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 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	500
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	501 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	502 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	503 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	504 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	505 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	506 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	507 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	508 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	509 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	510 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	511 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	512 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	513 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	514 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	515 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	516 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	517 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	518 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	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 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	522 left = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	523 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	524 left = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	525 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	526 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	527 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	528 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	529 slice_len = right - left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	530
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	531 if ( count != slice_len ) {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	532 PyErr_SetString(
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	533 PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	534 "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	535 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	536 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	537
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	538 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	539 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	540
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	541 return 0;
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 /* Buffer methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	545
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	546 static Py_ssize_t
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	547 buffer_getreadbuf(PyBufferObject self, Py_ssize_t idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	548 {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	549 Py_ssize_t size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	550 if ( idx != 0 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	551 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	552 "accessing non-existent buffer segment");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	553 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	554 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	555 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	556 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	557 return size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	558 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	559
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	560 static Py_ssize_t
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	561 buffer_getwritebuf(PyBufferObject self, Py_ssize_t idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	562 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	563 if ( self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	564 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	565 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	566 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	567 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	568 return buffer_getreadbuf(self, idx, pp);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	569 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	570
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	571 static Py_ssize_t
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	572 buffer_getsegcount(PyBufferObject self, Py_ssize_t lenp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	573 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	574 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	575 Py_ssize_t size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	576 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	577 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	578 if (lenp)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	579 *lenp = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	580 return 1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	581 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	582
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	583 static Py_ssize_t
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	584 buffer_getcharbuf(PyBufferObject self, Py_ssize_t 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	585 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	586 void *ptr;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	587 Py_ssize_t size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	588 if ( idx != 0 ) {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	589 PyErr_SetString(PyExc_SystemError,
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	590 "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	591 return -1;
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	592 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	593 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	594 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	595 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	596 return size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	597 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	598
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 static PySequenceMethods buffer_as_sequence = {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	601 (lenfunc)buffer_length, /sq_length/
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	602 (binaryfunc)buffer_concat, /sq_concat/
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	603 (ssizeargfunc)buffer_repeat, /sq_repeat/
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	604 (ssizeargfunc)buffer_item, /sq_item/
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	605 (ssizessizeargfunc)buffer_slice, /sq_slice/
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	606 (ssizeobjargproc)buffer_ass_item, /sq_ass_item/
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	607 (ssizessizeobjargproc)buffer_ass_slice, /sq_ass_slice/
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	608 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	609
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	610 static PyBufferProcs buffer_as_buffer = {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	611 (readbufferproc)buffer_getreadbuf,
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	612 (writebufferproc)buffer_getwritebuf,
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	613 (segcountproc)buffer_getsegcount,
7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36082 diff changeset	614 (charbufferproc)buffer_getcharbuf,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	615 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	616
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	617 PyTypeObject PyBuffer_Type = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	618 PyObject_HEAD_INIT(&PyType_Type)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	619 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	620 "buffer",
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	621 sizeof(PyBufferObject),
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	622 0,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	623 (destructor)buffer_dealloc, /* tp_dealloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	624 0, /* tp_print */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	625 0, /* tp_getattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	626 0, /* tp_setattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	627 (cmpfunc)buffer_compare, /* tp_compare */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	628 (reprfunc)buffer_repr, /* tp_repr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	629 0, /* tp_as_number */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	630 &buffer_as_sequence, /* tp_as_sequence */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	631 0, /* tp_as_mapping */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	632 (hashfunc)buffer_hash, /* tp_hash */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	633 0, /* tp_call */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	634 (reprfunc)buffer_str, /* tp_str */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	635 PyObject_GenericGetAttr, /* tp_getattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	636 0, /* tp_setattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	637 &buffer_as_buffer, /* tp_as_buffer */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	638 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	639 buffer_doc, /* tp_doc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	640 0, /* tp_traverse */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	641 0, /* tp_clear */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	642 0, /* tp_richcompare */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	643 0, /* tp_weaklistoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	644 0, /* tp_iter */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	645 0, /* tp_iternext */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	646 0, /* tp_methods */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	647 0, /* tp_members */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	648 0, /* tp_getset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	649 0, /* tp_base */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	650 0, /* tp_dict */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	651 0, /* tp_descr_get */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	652 0, /* tp_descr_set */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	653 0, /* tp_dictoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	654 0, /* tp_init */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	655 0, /* tp_alloc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	656 buffer_new, /* tp_new */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	657 };

Mercurial > cpython-lru_cache-weakref

annotate Objects/bufferobject.c @ 36510:0f3894bb2ada legacy-trunk