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

annotate Objects/bufferobject.c @ 34662:b40586129bb0 legacy-trunk

Patches #749830, #1144555: allow UNIX mmap size to default to current file size.

author	Martin v. Löwis <martin@v.loewis.de>
date	Thu, 03 Mar 2005 11:22:44 +0000
parents	97cb9eea212e
children	97c97194e64b

rev	line source
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	1
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	2 /* Buffer object implementation */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	3
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	4 #include "Python.h"
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	5
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	6
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	7 typedef struct {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	8 PyObject_HEAD
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	9 PyObject *b_base;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	10 void *b_ptr;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	11 int b_size;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	12 int b_offset;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	13 int b_readonly;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	14 long b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	15 } PyBufferObject;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	16
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	17
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	18 static int
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	19 get_buf(PyBufferObject self, void ptr, int size)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	20 {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	21 if (self->b_base == NULL) {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	22 assert (ptr != NULL);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	23 *ptr = self->b_ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	24 *size = self->b_size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	25 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	26 else {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	27 int count, offset;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	28 getreadbufferproc proc;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	29 PyBufferProcs *bp = self->b_base->ob_type->tp_as_buffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	30 if ((*bp->bf_getsegcount)(self->b_base, NULL) != 1) {
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	31 PyErr_SetString(PyExc_TypeError,
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	32 "single-segment buffer object expected");
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	33 return 0;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	34 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	35 if (self->b_readonly)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	36 proc = bp->bf_getreadbuffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	37 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	38 proc = (getreadbufferproc)bp->bf_getwritebuffer;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	39 if ((count = (*proc)(self->b_base, 0, ptr)) < 0)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	40 return 0;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	41 /* apply constraints to the start/end */
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	42 if (self->b_offset > count)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	43 offset = count;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	44 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	45 offset = self->b_offset;
31810 7a120400888a Correct code to advance ptr to be well-formed C. Martin v. Löwis <martin@v.loewis.de> parents: 31640 diff changeset	46 (char )ptr = (char **)ptr + offset;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	47 if (self->b_size == Py_END_OF_BUFFER)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	48 *size = count;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	49 else
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	50 *size = self->b_size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	51 if (offset + *size > count)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	52 *size = count - offset;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	53 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	54 return 1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	55 }
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	56
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	57
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	58 static PyObject *
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	59 buffer_from_memory(PyObject base, int size, int offset, void ptr,
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	60 int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	61 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	62 PyBufferObject * b;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	63
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	64 if (size < 0 && size != Py_END_OF_BUFFER) {
10427 e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	65 PyErr_SetString(PyExc_ValueError,
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	66 "size must be zero or positive");
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	67 return NULL;
e6799a855af7 Added check for negative offset for PyBuffer_FromObject and check for Guido van Rossum <guido@python.org> parents: 9305 diff changeset	68 }
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 *
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	91 buffer_from_object(PyObject *base, int size, int offset, int readonly)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	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) {
97cb9eea212e Ensure negative offsets cannot be passed to buffer(). When composing Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 33559 diff changeset	102 int base_size = b->b_size - offset;
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 *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	116 PyBuffer_FromObject(PyObject *base, int offset, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	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 *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	132 PyBuffer_FromReadWriteObject(PyObject *base, int offset, int size)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	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 *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	148 PyBuffer_FromMemory(void *ptr, int 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 *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	154 PyBuffer_FromReadWriteMemory(void *ptr, int 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 *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	160 PyBuffer_New(int 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 }
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	170 /* Inline PyObject_New */
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	171 o = PyObject_MALLOC(sizeof(*b) + size);
f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	172 if ( o == NULL )
11175 fab81df566d0 PyBuffer_New(): Raise ValueError if size is negative (the other Fred Drake <fdrake@acm.org> parents: 10460 diff changeset	173 return PyErr_NoMemory();
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	174 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	175
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	176 b->b_base = NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	177 b->b_ptr = (void *)(b + 1);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	178 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	179 b->b_offset = 0;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	180 b->b_readonly = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	181 b->b_hash = -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	182
13861 f3d5f71ccbb4 Removing warnings found by gcc -Wall Moshe Zadka <moshez@math.huji.ac.il> parents: 13449 diff changeset	183 return o;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	184 }
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 /* Methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	187
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	188 static PyObject *
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	189 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	190 {
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	191 PyObject *ob;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	192 int offset = 0;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	193 int size = Py_END_OF_BUFFER;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	194
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	195 if ( !PyArg_ParseTuple(args, "O\|ii:buffer", &ob, &offset, &size) )
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	196 return NULL;
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	197 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	198 }
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	199
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	200 PyDoc_STRVAR(buffer_doc,
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	201 "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	202 \n\
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	203 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	204 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	205 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	206 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	207
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	208
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	209 static void
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	210 buffer_dealloc(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	211 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	212 Py_XDECREF(self->b_base);
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11175 diff changeset	213 PyObject_DEL(self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	214 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	215
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	216 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	217 buffer_compare(PyBufferObject self, PyBufferObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	218 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	219 void p1, p2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	220 int len_self, len_other, min_len, cmp;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	221
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	222 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	223 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	224 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	225 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	226 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	227 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	228 cmp = memcmp(p1, p2, min_len);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	229 if (cmp != 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	230 return cmp;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	231 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	232 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	233 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	234
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	235 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	236 buffer_repr(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	237 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	238 char *status = self->b_readonly ? "read-only" : "read-write";
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	239
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	240 if ( self->b_base == NULL )
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	241 return PyString_FromFormat("<%s buffer ptr %p, size %d at %p>",
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	242 status,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	243 self->b_ptr,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	244 self->b_size,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	245 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	246 else
19476 0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing Barry Warsaw <barry@python.org> parents: 18933 diff changeset	247 return PyString_FromFormat(
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	248 "<%s buffer for %p, size %d, offset %d at %p>",
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	249 status,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	250 self->b_base,
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	251 self->b_size,
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	252 self->b_offset,
13210 ff243b0f16ee Trent Mick <trentm@activestate.com>: Fred Drake <fdrake@acm.org> parents: 12576 diff changeset	253 self);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	254 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	255
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	256 static long
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	257 buffer_hash(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	258 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	259 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	260 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	261 register int len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	262 register unsigned char *p;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	263 register long x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	264
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	265 if ( self->b_hash != -1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	266 return self->b_hash;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	267
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	268 /* 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	269 * 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	270 * 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	271 * 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	272 * 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	273 * 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	274 * an error. */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	275 if ( !self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	276 {
31639 047148089c35 Document one of the many problems with the buffer object. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31638 diff changeset	277 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	278 "writable buffers are not hashable");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	279 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	280 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	281
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	282 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	283 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	284 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	285 len = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	286 x = *p << 7;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	287 while (--len >= 0)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	288 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	289 x ^= size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	290 if (x == -1)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	291 x = -2;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	292 self->b_hash = x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	293 return x;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	294 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	295
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	296 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	297 buffer_str(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	298 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	299 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	300 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	301 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	302 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	303 return PyString_FromStringAndSize(ptr, size);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	304 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	305
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	306 /* Sequence methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	307
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	308 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	309 buffer_length(PyBufferObject *self)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	310 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	311 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	312 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	313 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	314 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	315 return size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	316 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	317
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	318 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	319 buffer_concat(PyBufferObject self, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	320 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	321 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	322 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	323 char *p;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	324 PyObject *ob;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	325 int size, count;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	326
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	327 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	328 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	329 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	330 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	331 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	332 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	333 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	334 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
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 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	337 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	338 "single-segment buffer object expected");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	339 return NULL;
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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	342 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	343 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	344
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	345 /* 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	346 if ( size == 0 )
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	347 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	348 Py_INCREF(other);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	349 return other;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	350 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	351
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	352 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	353 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	354
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	355 ob = PyString_FromStringAndSize(NULL, size + count);
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	356 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	357 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	358 memcpy(p + size, ptr2, count);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	359
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	360 /* 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	361 p[size + count] = '\0';
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	362
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	363 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	364 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	365
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	366 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	367 buffer_repeat(PyBufferObject *self, int count)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	368 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	369 PyObject *ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	370 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	371 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	372 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	373
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	374 if ( count < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	375 count = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	376 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	377 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	378 ob = PyString_FromStringAndSize(NULL, size * count);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	379 if ( ob == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	380 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	381
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	382 p = PyString_AS_STRING(ob);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	383 while ( count-- )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	384 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	385 memcpy(p, ptr, size);
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	386 p += size;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	387 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	388
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	389 /* 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	390 *p = '\0';
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 return ob;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	393 }
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 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	396 buffer_item(PyBufferObject *self, int idx)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	397 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	398 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	399 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	400 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	401 return NULL;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	402 if ( idx < 0 \|\| idx >= size ) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	403 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	404 return NULL;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	405 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	406 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	407 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	408
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	409 static PyObject *
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	410 buffer_slice(PyBufferObject *self, int left, int right)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	411 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	412 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	413 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	414 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	415 return NULL;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	416 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	417 left = 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	418 if ( right < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	419 right = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	420 if ( right > size )
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	421 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	422 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	423 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	424 return PyString_FromStringAndSize((char *)ptr + left,
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	425 right - left);
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	426 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	427
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	428 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	429 buffer_ass_item(PyBufferObject self, int idx, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	430 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	431 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	432 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	433 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	434 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	435
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	436 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	437 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	438 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	439 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	440 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	441
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	442 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	443 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	444
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	445 if (idx < 0 \|\| idx >= size) {
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	446 PyErr_SetString(PyExc_IndexError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	447 "buffer assignment index out of range");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	448 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	449 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	450
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	451 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	452 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	453 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	454 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	455 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	456 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	457 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	458 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	459 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	460 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	461 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	462 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	463 "single-segment buffer object expected");
9278 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
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	467 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	468 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	469 if ( count != 1 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	470 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	471 "right operand must be a single byte");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	472 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	473 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	474
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	475 ((char )ptr1)[idx] = (char *)ptr2;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	476 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	477 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	478
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	479 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	480 buffer_ass_slice(PyBufferObject self, int left, int right, PyObject other)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	481 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	482 PyBufferProcs *pb;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	483 void ptr1, ptr2;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	484 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	485 int slice_len;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	486 int count;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	487
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	488 if ( self->b_readonly ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	489 PyErr_SetString(PyExc_TypeError,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	490 "buffer is read-only");
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	491 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	492 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	493
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	494 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	495 if ( pb == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	496 pb->bf_getreadbuffer == NULL \|\|
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	497 pb->bf_getsegcount == NULL )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	498 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	499 PyErr_BadArgument();
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	500 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	501 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	502 if ( (*pb->bf_getsegcount)(other, NULL) != 1 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	503 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	504 /* ### use a different exception type/message? */
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	505 PyErr_SetString(PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	506 "single-segment buffer object expected");
9278 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 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	509 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	510 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	511 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	512 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	513
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	514 if ( left < 0 )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	515 left = 0;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	516 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	517 left = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	518 if ( right < left )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	519 right = left;
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	520 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	521 right = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	522 slice_len = right - left;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	523
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	524 if ( count != slice_len ) {
10460 62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	525 PyErr_SetString(
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	526 PyExc_TypeError,
62781914fadb Folded long lines. Guido van Rossum <guido@python.org> parents: 10427 diff changeset	527 "right operand length must match slice length");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	528 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	529 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	530
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	531 if ( slice_len )
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	532 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	533
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	534 return 0;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	535 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	536
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	537 /* Buffer methods */
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	538
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	539 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	540 buffer_getreadbuf(PyBufferObject self, int idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	541 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	542 int size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	543 if ( idx != 0 ) {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	544 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	545 "accessing non-existent buffer segment");
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	546 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	547 }
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	548 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	549 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	550 return size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	551 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	552
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	553 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	554 buffer_getwritebuf(PyBufferObject self, int idx, void *pp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	555 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	556 if ( self->b_readonly )
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	557 {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	558 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	559 return -1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	560 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	561 return buffer_getreadbuf(self, idx, pp);
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
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	564 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	565 buffer_getsegcount(PyBufferObject self, int lenp)
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	566 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	567 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	568 int size;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	569 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	570 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	571 if (lenp)
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	572 *lenp = size;
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	573 return 1;
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	574 }
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	575
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	576 static int
13449 0409a98cd582 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	577 buffer_getcharbuf(PyBufferObject self, int idx, const char *pp)
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	578 {
31640 42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	579 void *ptr;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	580 int size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	581 if ( idx != 0 ) {
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	582 PyErr_SetString(PyExc_SystemError,
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	583 "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	584 return -1;
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 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	587 return -1;
42f8820686c9 Make buffer objects based on mutable objects (like array) safe. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 31639 diff changeset	588 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	589 return size;
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	590 }
083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	591
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	592
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	593 static PySequenceMethods buffer_as_sequence = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	594 (inquiry)buffer_length, /sq_length/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	595 (binaryfunc)buffer_concat, /sq_concat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	596 (intargfunc)buffer_repeat, /sq_repeat/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	597 (intargfunc)buffer_item, /sq_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	598 (intintargfunc)buffer_slice, /sq_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	599 (intobjargproc)buffer_ass_item, /sq_ass_item/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	600 (intintobjargproc)buffer_ass_slice, /sq_ass_slice/
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	601 };
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	602
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	603 static PyBufferProcs buffer_as_buffer = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	604 (getreadbufferproc)buffer_getreadbuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	605 (getwritebufferproc)buffer_getwritebuf,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	606 (getsegcountproc)buffer_getsegcount,
9305 083efa076366 Greg Stein: Implement the new bf_getcharbuffer function, indicating Guido van Rossum <guido@python.org> parents: 9286 diff changeset	607 (getcharbufferproc)buffer_getcharbuf,
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 PyTypeObject PyBuffer_Type = {
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	611 PyObject_HEAD_INIT(&PyType_Type)
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	612 0,
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	613 "buffer",
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	614 sizeof(PyBufferObject),
c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	615 0,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	616 (destructor)buffer_dealloc, /* tp_dealloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	617 0, /* tp_print */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	618 0, /* tp_getattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	619 0, /* tp_setattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	620 (cmpfunc)buffer_compare, /* tp_compare */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	621 (reprfunc)buffer_repr, /* tp_repr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	622 0, /* tp_as_number */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	623 &buffer_as_sequence, /* tp_as_sequence */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	624 0, /* tp_as_mapping */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	625 (hashfunc)buffer_hash, /* tp_hash */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	626 0, /* tp_call */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	627 (reprfunc)buffer_str, /* tp_str */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	628 PyObject_GenericGetAttr, /* tp_getattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	629 0, /* tp_setattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	630 &buffer_as_buffer, /* tp_as_buffer */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	631 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	632 buffer_doc, /* tp_doc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	633 0, /* tp_traverse */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	634 0, /* tp_clear */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	635 0, /* tp_richcompare */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	636 0, /* tp_weaklistoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	637 0, /* tp_iter */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	638 0, /* tp_iternext */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	639 0, /* tp_methods */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	640 0, /* tp_members */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	641 0, /* tp_getset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	642 0, /* tp_base */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	643 0, /* tp_dict */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	644 0, /* tp_descr_get */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	645 0, /* tp_descr_set */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	646 0, /* tp_dictoffset */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	647 0, /* tp_init */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	648 0, /* tp_alloc */
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 22651 diff changeset	649 buffer_new, /* tp_new */
9278 c39218a68df1 Add Greg Stein's buffer object API. Guido van Rossum <guido@python.org> parents: diff changeset	650 };

Mercurial > cpython-lru_cache-weakref

annotate Objects/bufferobject.c @ 34662:b40586129bb0 legacy-trunk