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annotate Modules/zlibmodule.c @ 73807:1efefeda00a7 3.2

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#8414: add more tests for "assert". Initial patch by Gregory Nofi.
author Ezio Melotti <ezio.melotti@gmail.com>
date Fri, 02 Dec 2011 18:22:52 +0200
parents cc9e794bf94f
children be882735e0b6 b384231df332
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1 /* zlibmodule.c -- gzip-compatible data compression */
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2 /* See http://www.gzip.org/zlib/ */
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3
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4 /* Windows users: read Python's PCbuild\readme.txt */
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5
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6
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7 #include "Python.h"
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8 #include "structmember.h"
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9 #include "zlib.h"
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10
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11 #ifdef WITH_THREAD
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12 #include "pythread.h"
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13 #define ENTER_ZLIB(obj) \
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14 Py_BEGIN_ALLOW_THREADS; \
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15 PyThread_acquire_lock((obj)->lock, 1); \
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16 Py_END_ALLOW_THREADS;
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17 #define LEAVE_ZLIB(obj) PyThread_release_lock((obj)->lock);
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18 #else
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19 #define ENTER_ZLIB(obj)
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20 #define LEAVE_ZLIB(obj)
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21 #endif
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22
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23 /* The following parameters are copied from zutil.h, version 0.95 */
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24 #define DEFLATED 8
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25 #if MAX_MEM_LEVEL >= 8
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26 # define DEF_MEM_LEVEL 8
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27 #else
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28 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
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29 #endif
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30 #define DEF_WBITS MAX_WBITS
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31
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32 /* The output buffer will be increased in chunks of DEFAULTALLOC bytes. */
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33 #define DEFAULTALLOC (16*1024)
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34
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35 static PyTypeObject Comptype;
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36 static PyTypeObject Decomptype;
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37
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38 static PyObject *ZlibError;
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39
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40 typedef struct
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41 {
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42 PyObject_HEAD
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43 z_stream zst;
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44 PyObject *unused_data;
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45 PyObject *unconsumed_tail;
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46 int is_initialised;
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47 #ifdef WITH_THREAD
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48 PyThread_type_lock lock;
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49 #endif
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50 } compobject;
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51
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52 static void
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53 zlib_error(z_stream zst, int err, char *msg)
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54 {
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55 const char *zmsg = Z_NULL;
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56 /* In case of a version mismatch, zst.msg won't be initialized.
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57 Check for this case first, before looking at zst.msg. */
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58 if (err == Z_VERSION_ERROR)
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59 zmsg = "library version mismatch";
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60 if (zmsg == Z_NULL)
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61 zmsg = zst.msg;
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62 if (zmsg == Z_NULL) {
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63 switch (err) {
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64 case Z_BUF_ERROR:
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65 zmsg = "incomplete or truncated stream";
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66 break;
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67 case Z_STREAM_ERROR:
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68 zmsg = "inconsistent stream state";
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69 break;
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70 case Z_DATA_ERROR:
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71 zmsg = "invalid input data";
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72 break;
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73 }
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74 }
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75 if (zmsg == Z_NULL)
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76 PyErr_Format(ZlibError, "Error %d %s", err, msg);
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77 else
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78 PyErr_Format(ZlibError, "Error %d %s: %.200s", err, msg, zmsg);
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79 }
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80
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81 PyDoc_STRVAR(compressobj__doc__,
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82 "compressobj([level]) -- Return a compressor object.\n"
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83 "\n"
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84 "Optional arg level is the compression level, in 1-9.");
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85
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86 PyDoc_STRVAR(decompressobj__doc__,
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87 "decompressobj([wbits]) -- Return a decompressor object.\n"
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88 "\n"
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89 "Optional arg wbits is the window buffer size.");
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90
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91 static compobject *
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92 newcompobject(PyTypeObject *type)
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93 {
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94 compobject *self;
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95 self = PyObject_New(compobject, type);
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96 if (self == NULL)
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97 return NULL;
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98 self->is_initialised = 0;
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99 self->unused_data = PyBytes_FromStringAndSize("", 0);
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100 if (self->unused_data == NULL) {
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101 Py_DECREF(self);
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102 return NULL;
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103 }
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104 self->unconsumed_tail = PyBytes_FromStringAndSize("", 0);
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105 if (self->unconsumed_tail == NULL) {
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106 Py_DECREF(self);
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107 return NULL;
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108 }
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109 #ifdef WITH_THREAD
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110 self->lock = PyThread_allocate_lock();
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111 #endif
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112 return self;
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113 }
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114
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115 PyDoc_STRVAR(compress__doc__,
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116 "compress(string[, level]) -- Returned compressed string.\n"
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117 "\n"
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118 "Optional arg level is the compression level, in 1-9.");
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119
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120 static PyObject *
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121 PyZlib_compress(PyObject *self, PyObject *args)
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122 {
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123 PyObject *ReturnVal = NULL;
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124 Py_buffer pinput;
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125 Byte *input, *output = NULL;
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126 unsigned int length;
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127 int level=Z_DEFAULT_COMPRESSION, err;
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128 z_stream zst;
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129
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130 /* require Python string object, optional 'level' arg */
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diff changeset
131 if (!PyArg_ParseTuple(args, "y*|i:compress", &pinput, &level))
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132 return NULL;
70103
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Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
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133
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
134 if (pinput.len > UINT_MAX) {
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
135 PyErr_SetString(PyExc_OverflowError,
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
136 "Size does not fit in an unsigned int");
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
137 goto error;
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
138 }
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Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
139 input = pinput.buf;
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Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
140 length = pinput.len;
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Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
141
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Jeremy Hylton <jeremy@alum.mit.edu>
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142 zst.avail_out = length + length/1000 + 12 + 1;
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Martin v. Löwis <martin@v.loewis.de>
parents: 16735
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143
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144 output = (Byte*)malloc(zst.avail_out);
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
145 if (output == NULL) {
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146 PyErr_SetString(PyExc_MemoryError,
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147 "Can't allocate memory to compress data");
70103
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Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
148 goto error;
5352
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Guido van Rossum <guido@python.org>
parents:
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149 }
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Jeremy Hylton <jeremy@alum.mit.edu>
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150
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151 /* Past the point of no return. From here on out, we need to make sure
c46e94fd6986 Reformat!
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152 we clean up mallocs & INCREFs. */
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153
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diff changeset
154 zst.zalloc = (alloc_func)NULL;
c23989e22ffa Simplify and fix error handling for most cases.
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diff changeset
155 zst.zfree = (free_func)Z_NULL;
c23989e22ffa Simplify and fix error handling for most cases.
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parents: 20475
diff changeset
156 zst.next_out = (Byte *)output;
c23989e22ffa Simplify and fix error handling for most cases.
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diff changeset
157 zst.next_in = (Byte *)input;
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158 zst.avail_in = length;
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parents: 20475
diff changeset
159 err = deflateInit(&zst, level);
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parents: 16735
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160
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diff changeset
161 switch(err) {
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parents:
diff changeset
162 case(Z_OK):
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163 break;
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Guido van Rossum <guido@python.org>
parents:
diff changeset
164 case(Z_MEM_ERROR):
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165 PyErr_SetString(PyExc_MemoryError,
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166 "Out of memory while compressing data");
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diff changeset
167 goto error;
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Guido van Rossum <guido@python.org>
parents:
diff changeset
168 case(Z_STREAM_ERROR):
61466
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diff changeset
169 PyErr_SetString(ZlibError,
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diff changeset
170 "Bad compression level");
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171 goto error;
20474
a5a30ba2899f Add zlib_error() helper.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20470
diff changeset
172 default:
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parents:
diff changeset
173 deflateEnd(&zst);
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174 zlib_error(zst, err, "while compressing data");
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175 goto error;
5352
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Guido van Rossum <guido@python.org>
parents:
diff changeset
176 }
19798
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Martin v. Löwis <martin@v.loewis.de>
parents: 16735
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177
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Jeremy Hylton <jeremy@alum.mit.edu>
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178 Py_BEGIN_ALLOW_THREADS;
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
179 err = deflate(&zst, Z_FINISH);
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
180 Py_END_ALLOW_THREADS;
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181
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diff changeset
182 if (err != Z_STREAM_END) {
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diff changeset
183 zlib_error(zst, err, "while compressing data");
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184 deflateEnd(&zst);
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185 goto error;
20477
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
186 }
20484
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Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
187
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Jeremy Hylton <jeremy@alum.mit.edu>
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188 err=deflateEnd(&zst);
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
189 if (err == Z_OK)
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190 ReturnVal = PyBytes_FromStringAndSize((char *)output,
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Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
191 zst.total_out);
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Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
192 else
61466
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diff changeset
193 zlib_error(zst, err, "while finishing compression");
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Martin v. Löwis <martin@v.loewis.de>
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diff changeset
194
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
195 error:
48683
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196 PyBuffer_Release(&pinput);
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
197 free(output);
19798
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parents: 16735
diff changeset
198
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Jeremy Hylton <jeremy@alum.mit.edu>
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199 return ReturnVal;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
200 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
201
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
202 PyDoc_STRVAR(decompress__doc__,
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
203 "decompress(string[, wbits[, bufsize]]) -- Return decompressed string.\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
204 "\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
205 "Optional arg wbits is the window buffer size. Optional arg bufsize is\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
206 "the initial output buffer size.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
207
5352
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Guido van Rossum <guido@python.org>
parents:
diff changeset
208 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
209 PyZlib_decompress(PyObject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
210 {
70103
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
211 PyObject *result_str = NULL;
48683
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Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
212 Py_buffer pinput;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
213 Byte *input;
70103
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
214 unsigned int length;
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
215 int err;
43957
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Guido van Rossum <guido@python.org>
parents: 42750
diff changeset
216 int wsize=DEF_WBITS;
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Guido van Rossum <guido@python.org>
parents: 42750
diff changeset
217 Py_ssize_t r_strlen=DEFAULTALLOC;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
218 z_stream zst;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
219
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diff changeset
220 if (!PyArg_ParseTuple(args, "y*|in:decompress",
61466
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parents: 61370
diff changeset
221 &pinput, &wsize, &r_strlen))
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parents: 61370
diff changeset
222 return NULL;
70103
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
223
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
224 if (pinput.len > UINT_MAX) {
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
225 PyErr_SetString(PyExc_OverflowError,
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
226 "Size does not fit in an unsigned int");
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
227 goto error;
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
228 }
48683
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Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
229 input = pinput.buf;
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Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
230 length = pinput.len;
6236
6dfec320f910 Several changes:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 6226
diff changeset
231
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
232 if (r_strlen <= 0)
61466
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
233 r_strlen = 1;
9657
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
234
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
235 zst.avail_in = length;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
236 zst.avail_out = r_strlen;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
237
70103
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
238 if (!(result_str = PyBytes_FromStringAndSize(NULL, r_strlen)))
850624632e9a Issue #8650: Backport 64-bit safety fixes for compress() and decompress().
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70099
diff changeset
239 goto error;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
240
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
241 zst.zalloc = (alloc_func)NULL;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
242 zst.zfree = (free_func)Z_NULL;
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
243 zst.next_out = (Byte *)PyBytes_AS_STRING(result_str);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
244 zst.next_in = (Byte *)input;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
245 err = inflateInit2(&zst, wsize);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
246
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
247 switch(err) {
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
248 case(Z_OK):
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
249 break;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
250 case(Z_MEM_ERROR):
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
251 PyErr_SetString(PyExc_MemoryError,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
252 "Out of memory while decompressing data");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
253 goto error;
20474
a5a30ba2899f Add zlib_error() helper.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20470
diff changeset
254 default:
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
255 inflateEnd(&zst);
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
256 zlib_error(zst, err, "while preparing to decompress data");
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
257 goto error;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
258 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
259
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260 do {
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261 Py_BEGIN_ALLOW_THREADS
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262 err=inflate(&zst, Z_FINISH);
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263 Py_END_ALLOW_THREADS
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264
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265 switch(err) {
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266 case(Z_STREAM_END):
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267 break;
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268 case(Z_BUF_ERROR):
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269 /*
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270 * If there is at least 1 byte of room according to zst.avail_out
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271 * and we get this error, assume that it means zlib cannot
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272 * process the inflate call() due to an error in the data.
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273 */
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274 if (zst.avail_out > 0) {
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275 zlib_error(zst, err, "while decompressing data");
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276 inflateEnd(&zst);
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277 goto error;
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278 }
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279 /* fall through */
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280 case(Z_OK):
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281 /* need more memory */
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282 if (_PyBytes_Resize(&result_str, r_strlen << 1) < 0) {
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283 inflateEnd(&zst);
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284 goto error;
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285 }
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286 zst.next_out =
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287 (unsigned char *)PyBytes_AS_STRING(result_str) + r_strlen;
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288 zst.avail_out = r_strlen;
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289 r_strlen = r_strlen << 1;
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290 break;
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291 default:
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292 inflateEnd(&zst);
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293 zlib_error(zst, err, "while decompressing data");
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294 goto error;
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295 }
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296 } while (err != Z_STREAM_END);
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297
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298 err = inflateEnd(&zst);
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299 if (err != Z_OK) {
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300 zlib_error(zst, err, "while finishing data decompression");
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301 goto error;
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302 }
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303
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304 if (_PyBytes_Resize(&result_str, zst.total_out) < 0)
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305 goto error;
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306
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307 PyBuffer_Release(&pinput);
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308 return result_str;
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309
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310 error:
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311 PyBuffer_Release(&pinput);
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312 Py_XDECREF(result_str);
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313 return NULL;
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314 }
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315
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316 static PyObject *
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317 PyZlib_compressobj(PyObject *selfptr, PyObject *args)
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318 {
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319 compobject *self;
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320 int level=Z_DEFAULT_COMPRESSION, method=DEFLATED;
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321 int wbits=MAX_WBITS, memLevel=DEF_MEM_LEVEL, strategy=0, err;
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322
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323 if (!PyArg_ParseTuple(args, "|iiiii:compressobj", &level, &method, &wbits,
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324 &memLevel, &strategy))
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325 return NULL;
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326
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327 self = newcompobject(&Comptype);
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328 if (self==NULL)
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329 return(NULL);
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330 self->zst.zalloc = (alloc_func)NULL;
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331 self->zst.zfree = (free_func)Z_NULL;
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332 self->zst.next_in = NULL;
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333 self->zst.avail_in = 0;
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334 err = deflateInit2(&self->zst, level, method, wbits, memLevel, strategy);
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335 switch(err) {
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336 case (Z_OK):
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337 self->is_initialised = 1;
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338 return (PyObject*)self;
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339 case (Z_MEM_ERROR):
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340 Py_DECREF(self);
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341 PyErr_SetString(PyExc_MemoryError,
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342 "Can't allocate memory for compression object");
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343 return NULL;
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344 case(Z_STREAM_ERROR):
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345 Py_DECREF(self);
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346 PyErr_SetString(PyExc_ValueError, "Invalid initialization option");
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347 return NULL;
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348 default:
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349 zlib_error(self->zst, err, "while creating compression object");
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350 Py_DECREF(self);
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351 return NULL;
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352 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
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353 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
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354
d5757aad1a4f Added Andrew Kuchling's zlib module.
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355 static PyObject *
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356 PyZlib_decompressobj(PyObject *selfptr, PyObject *args)
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357 {
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358 int wbits=DEF_WBITS, err;
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359 compobject *self;
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360 if (!PyArg_ParseTuple(args, "|i:decompressobj", &wbits))
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361 return NULL;
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362
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363 self = newcompobject(&Decomptype);
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364 if (self == NULL)
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365 return(NULL);
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366 self->zst.zalloc = (alloc_func)NULL;
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367 self->zst.zfree = (free_func)Z_NULL;
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b2ecda4dd70f [Bug #1083110] calling .flush() on decompress objects causes a segfault due to an uninitialized pointer: fixes the problem and adds a test case
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diff changeset
368 self->zst.next_in = NULL;
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diff changeset
369 self->zst.avail_in = 0;
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370 err = inflateInit2(&self->zst, wbits);
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371 switch(err) {
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372 case (Z_OK):
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373 self->is_initialised = 1;
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374 return (PyObject*)self;
6236
6dfec320f910 Several changes:
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375 case(Z_STREAM_ERROR):
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376 Py_DECREF(self);
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377 PyErr_SetString(PyExc_ValueError, "Invalid initialization option");
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378 return NULL;
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379 case (Z_MEM_ERROR):
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380 Py_DECREF(self);
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381 PyErr_SetString(PyExc_MemoryError,
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382 "Can't allocate memory for decompression object");
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383 return NULL;
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384 default:
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385 zlib_error(self->zst, err, "while creating decompression object");
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diff changeset
386 Py_DECREF(self);
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387 return NULL;
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diff changeset
388 }
5352
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parents:
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389 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
390
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
391 static void
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
392 Dealloc(compobject *self)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
393 {
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
394 #ifdef WITH_THREAD
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
395 PyThread_free_lock(self->lock);
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
396 #endif
10467
255abab3c574 Add an .unused_data attribute to decompressor objects. If .unused_data
Andrew M. Kuchling <amk@amk.ca>
parents: 10440
diff changeset
397 Py_XDECREF(self->unused_data);
20466
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
398 Py_XDECREF(self->unconsumed_tail);
12576
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 12255
diff changeset
399 PyObject_Del(self);
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
400 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
401
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
402 static void
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
403 Comp_dealloc(compobject *self)
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
404 {
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
405 if (self->is_initialised)
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
406 deflateEnd(&self->zst);
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
407 Dealloc(self);
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
408 }
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
409
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
410 static void
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
411 Decomp_dealloc(compobject *self)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
412 {
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
413 if (self->is_initialised)
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
414 inflateEnd(&self->zst);
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
415 Dealloc(self);
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
416 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
417
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
418 PyDoc_STRVAR(comp_compress__doc__,
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
419 "compress(data) -- Return a string containing data compressed.\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
420 "\n"
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
421 "After calling this function, some of the input data may still\n"
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
422 "be stored in internal buffers for later processing.\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
423 "Call the flush() method to clear these buffers.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
424
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
425
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
426 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
427 PyZlib_objcompress(compobject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
428 {
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
429 int err;
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
430 unsigned int inplen;
61370
bcb0cf924693 Merged revisions 80926 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57736
diff changeset
431 Py_ssize_t length = DEFAULTALLOC;
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
432 PyObject *RetVal = NULL;
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
433 Py_buffer pinput;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
434 Byte *input;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
435 unsigned long start_total_out;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
436
57736
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
437 if (!PyArg_ParseTuple(args, "y*:compress", &pinput))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
438 return NULL;
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
439 if (pinput.len > UINT_MAX) {
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
440 PyErr_SetString(PyExc_OverflowError,
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
441 "Size does not fit in an unsigned int");
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
442 goto error_outer;
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
443 }
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
444 input = pinput.buf;
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
445 inplen = pinput.len;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
446
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
447 if (!(RetVal = PyBytes_FromStringAndSize(NULL, length)))
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
448 goto error_outer;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
449
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
450 ENTER_ZLIB(self);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
451
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
452 start_total_out = self->zst.total_out;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
453 self->zst.avail_in = inplen;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
454 self->zst.next_in = input;
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
455 self->zst.avail_out = length;
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
456 self->zst.next_out = (unsigned char *)PyBytes_AS_STRING(RetVal);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
457
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
458 Py_BEGIN_ALLOW_THREADS
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
459 err = deflate(&(self->zst), Z_NO_FLUSH);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
460 Py_END_ALLOW_THREADS
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
461
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
462 /* while Z_OK and the output buffer is full, there might be more output,
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
463 so extend the output buffer and try again */
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
464 while (err == Z_OK && self->zst.avail_out == 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
465 if (_PyBytes_Resize(&RetVal, length << 1) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
466 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
467 RetVal = NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
468 goto error;
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
469 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
470 self->zst.next_out =
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
471 (unsigned char *)PyBytes_AS_STRING(RetVal) + length;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
472 self->zst.avail_out = length;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
473 length = length << 1;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
474
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
475 Py_BEGIN_ALLOW_THREADS
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
476 err = deflate(&(self->zst), Z_NO_FLUSH);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
477 Py_END_ALLOW_THREADS
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
478 }
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
479 /* We will only get Z_BUF_ERROR if the output buffer was full but
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
480 there wasn't more output when we tried again, so it is not an error
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
481 condition.
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
482 */
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
483
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
484 if (err != Z_OK && err != Z_BUF_ERROR) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
485 zlib_error(self->zst, err, "while compressing");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
486 Py_DECREF(RetVal);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
487 RetVal = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
488 goto error;
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
489 }
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
490 if (_PyBytes_Resize(&RetVal, self->zst.total_out - start_total_out) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
491 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
492 RetVal = NULL;
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
493 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
494
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
495 error:
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
496 LEAVE_ZLIB(self);
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
497 error_outer:
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
498 PyBuffer_Release(&pinput);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
499 return RetVal;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
500 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
501
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
502 PyDoc_STRVAR(decomp_decompress__doc__,
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
503 "decompress(data, max_length) -- Return a string containing the decompressed\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
504 "version of the data.\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
505 "\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
506 "After calling this function, some of the input data may still be stored in\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
507 "internal buffers for later processing.\n"
20466
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
508 "Call the flush() method to clear these buffers.\n"
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
509 "If the max_length parameter is specified then the return value will be\n"
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
510 "no longer than max_length. Unconsumed input data will be stored in\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
511 "the unconsumed_tail attribute.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
512
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
513 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
514 PyZlib_objdecompress(compobject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
515 {
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
516 int err, max_length = 0;
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
517 unsigned int inplen;
61370
bcb0cf924693 Merged revisions 80926 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57736
diff changeset
518 Py_ssize_t old_length, length = DEFAULTALLOC;
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
519 PyObject *RetVal = NULL;
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
520 Py_buffer pinput;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
521 Byte *input;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
522 unsigned long start_total_out;
20466
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
523
57736
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
524 if (!PyArg_ParseTuple(args, "y*|i:decompress", &pinput,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
525 &max_length))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
526 return NULL;
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
527 if (pinput.len > UINT_MAX) {
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
528 PyErr_SetString(PyExc_OverflowError,
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
529 "Size does not fit in an unsigned int");
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
530 goto error_outer;
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
531 }
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
532 input = pinput.buf;
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
533 inplen = pinput.len;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
534 if (max_length < 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
535 PyErr_SetString(PyExc_ValueError,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
536 "max_length must be greater than zero");
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
537 goto error_outer;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
538 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
539
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
540 /* limit amount of data allocated to max_length */
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
541 if (max_length && length > max_length)
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
542 length = max_length;
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
543 if (!(RetVal = PyBytes_FromStringAndSize(NULL, length)))
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
544 goto error_outer;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
545
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
546 ENTER_ZLIB(self);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
547
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
548 start_total_out = self->zst.total_out;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
549 self->zst.avail_in = inplen;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
550 self->zst.next_in = input;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
551 self->zst.avail_out = length;
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
552 self->zst.next_out = (unsigned char *)PyBytes_AS_STRING(RetVal);
20466
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
553
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
554 Py_BEGIN_ALLOW_THREADS
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
555 err = inflate(&(self->zst), Z_SYNC_FLUSH);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
556 Py_END_ALLOW_THREADS
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
557
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
558 /* While Z_OK and the output buffer is full, there might be more output.
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
559 So extend the output buffer and try again.
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
560 */
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
561 while (err == Z_OK && self->zst.avail_out == 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
562 /* If max_length set, don't continue decompressing if we've already
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
563 reached the limit.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
564 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
565 if (max_length && length >= max_length)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
566 break;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
567
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
568 /* otherwise, ... */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
569 old_length = length;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
570 length = length << 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
571 if (max_length && length > max_length)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
572 length = max_length;
20466
60e12f83d2d2 [ #403753 ] zlib decompress; uncontrollable memory usage
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20327
diff changeset
573
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
574 if (_PyBytes_Resize(&RetVal, length) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
575 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
576 RetVal = NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
577 goto error;
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
578 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
579 self->zst.next_out =
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
580 (unsigned char *)PyBytes_AS_STRING(RetVal) + old_length;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
581 self->zst.avail_out = length - old_length;
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
582
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
583 Py_BEGIN_ALLOW_THREADS
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
584 err = inflate(&(self->zst), Z_SYNC_FLUSH);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
585 Py_END_ALLOW_THREADS
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
586 }
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
587
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
588 if(max_length) {
70099
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
589 /* Not all of the compressed data could be accommodated in a buffer of
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
590 the specified size. Return the unconsumed tail in an attribute. */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
591 Py_DECREF(self->unconsumed_tail);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
592 self->unconsumed_tail = PyBytes_FromStringAndSize((char *)self->zst.next_in,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
593 self->zst.avail_in);
70099
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
594 }
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
595 else if (PyBytes_GET_SIZE(self->unconsumed_tail) > 0) {
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
596 /* All of the compressed data was consumed. Clear unconsumed_tail. */
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
597 Py_DECREF(self->unconsumed_tail);
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
598 self->unconsumed_tail = PyBytes_FromStringAndSize("", 0);
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
599 }
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
600 if (self->unconsumed_tail == NULL) {
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
601 Py_DECREF(RetVal);
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
602 RetVal = NULL;
6a45567c7245 Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 68054
diff changeset
603 goto error;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
604 }
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
605
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
606 /* The end of the compressed data has been reached, so set the
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
607 unused_data attribute to a string containing the remainder of the
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
608 data in the string. Note that this is also a logical place to call
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
609 inflateEnd, but the old behaviour of only calling it on flush() is
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
610 preserved.
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
611 */
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
612 if (err == Z_STREAM_END) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
613 Py_XDECREF(self->unused_data); /* Free original empty string */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
614 self->unused_data = PyBytes_FromStringAndSize(
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
615 (char *)self->zst.next_in, self->zst.avail_in);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
616 if (self->unused_data == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
617 Py_DECREF(RetVal);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
618 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
619 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
620 /* We will only get Z_BUF_ERROR if the output buffer was full
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
621 but there wasn't more output when we tried again, so it is
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
622 not an error condition.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
623 */
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
624 } else if (err != Z_OK && err != Z_BUF_ERROR) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
625 zlib_error(self->zst, err, "while decompressing");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
626 Py_DECREF(RetVal);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
627 RetVal = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
628 goto error;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
629 }
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
630
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
631 if (_PyBytes_Resize(&RetVal, self->zst.total_out - start_total_out) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
632 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
633 RetVal = NULL;
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
634 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
635
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
636 error:
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
637 LEAVE_ZLIB(self);
70118
0b5211d19a14 Issue #8650: Make zlib.[de]compressobj().[de]compress() 64-bit clean.
Nadeem Vawda <nadeem.vawda@gmail.com>
parents: 70103
diff changeset
638 error_outer:
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
639 PyBuffer_Release(&pinput);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
640 return RetVal;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
641 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
642
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
643 PyDoc_STRVAR(comp_flush__doc__,
9657
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
644 "flush( [mode] ) -- Return a string containing any remaining compressed data.\n"
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
645 "\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
646 "mode can be one of the constants Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH; the\n"
9657
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
647 "default value used when mode is not specified is Z_FINISH.\n"
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
648 "If mode == Z_FINISH, the compressor object can no longer be used after\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
649 "calling the flush() method. Otherwise, more data can still be compressed.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
650
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
651 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
652 PyZlib_flush(compobject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
653 {
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
654 int err, length = DEFAULTALLOC;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
655 PyObject *RetVal;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
656 int flushmode = Z_FINISH;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
657 unsigned long start_total_out;
9657
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
658
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
659 if (!PyArg_ParseTuple(args, "|i:flush", &flushmode))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
660 return NULL;
9657
7dde4501f53a patches from Andrew
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 9652
diff changeset
661
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
662 /* Flushing with Z_NO_FLUSH is a no-op, so there's no point in
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
663 doing any work at all; just return an empty string. */
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
664 if (flushmode == Z_NO_FLUSH) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
665 return PyBytes_FromStringAndSize(NULL, 0);
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
666 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
667
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
668 if (!(RetVal = PyBytes_FromStringAndSize(NULL, length)))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
669 return NULL;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
670
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
671 ENTER_ZLIB(self);
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
672
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
673 start_total_out = self->zst.total_out;
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
674 self->zst.avail_in = 0;
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
675 self->zst.avail_out = length;
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
676 self->zst.next_out = (unsigned char *)PyBytes_AS_STRING(RetVal);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
677
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
678 Py_BEGIN_ALLOW_THREADS
16718
01c2470eeb2e Patch #103373 from Donovan Baarda: This patch:
Andrew M. Kuchling <amk@amk.ca>
parents: 16369
diff changeset
679 err = deflate(&(self->zst), flushmode);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
680 Py_END_ALLOW_THREADS
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
681
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
682 /* while Z_OK and the output buffer is full, there might be more output,
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
683 so extend the output buffer and try again */
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
684 while (err == Z_OK && self->zst.avail_out == 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
685 if (_PyBytes_Resize(&RetVal, length << 1) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
686 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
687 RetVal = NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
688 goto error;
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
689 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
690 self->zst.next_out =
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
691 (unsigned char *)PyBytes_AS_STRING(RetVal) + length;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
692 self->zst.avail_out = length;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
693 length = length << 1;
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
694
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
695 Py_BEGIN_ALLOW_THREADS
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
696 err = deflate(&(self->zst), flushmode);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
697 Py_END_ALLOW_THREADS
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
698 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
699
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
700 /* If flushmode is Z_FINISH, we also have to call deflateEnd() to free
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
701 various data structures. Note we should only get Z_STREAM_END when
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
702 flushmode is Z_FINISH, but checking both for safety*/
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
703 if (err == Z_STREAM_END && flushmode == Z_FINISH) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
704 err = deflateEnd(&(self->zst));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
705 if (err != Z_OK) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
706 zlib_error(self->zst, err, "from deflateEnd()");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
707 Py_DECREF(RetVal);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
708 RetVal = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
709 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
710 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
711 else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
712 self->is_initialised = 0;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
713
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
714 /* We will only get Z_BUF_ERROR if the output buffer was full
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
715 but there wasn't more output when we tried again, so it is
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
716 not an error condition.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
717 */
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
718 } else if (err!=Z_OK && err!=Z_BUF_ERROR) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
719 zlib_error(self->zst, err, "while flushing");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
720 Py_DECREF(RetVal);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
721 RetVal = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
722 goto error;
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
723 }
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
724
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
725 if (_PyBytes_Resize(&RetVal, self->zst.total_out - start_total_out) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
726 Py_DECREF(RetVal);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
727 RetVal = NULL;
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
728 }
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
729
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
730 error:
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
731 LEAVE_ZLIB(self);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
732
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
733 return RetVal;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
734 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
735
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
736 #ifdef HAVE_ZLIB_COPY
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
737 PyDoc_STRVAR(comp_copy__doc__,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
738 "copy() -- Return a copy of the compression object.");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
739
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
740 static PyObject *
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
741 PyZlib_copy(compobject *self)
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
742 {
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
743 compobject *retval = NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
744 int err;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
745
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
746 retval = newcompobject(&Comptype);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
747 if (!retval) return NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
748
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
749 /* Copy the zstream state
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
750 * We use ENTER_ZLIB / LEAVE_ZLIB to make this thread-safe
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
751 */
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
752 ENTER_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
753 err = deflateCopy(&retval->zst, &self->zst);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
754 switch(err) {
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
755 case(Z_OK):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
756 break;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
757 case(Z_STREAM_ERROR):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
758 PyErr_SetString(PyExc_ValueError, "Inconsistent stream state");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
759 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
760 case(Z_MEM_ERROR):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
761 PyErr_SetString(PyExc_MemoryError,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
762 "Can't allocate memory for compression object");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
763 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
764 default:
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
765 zlib_error(self->zst, err, "while copying compression object");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
766 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
767 }
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
768 Py_INCREF(self->unused_data);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
769 Py_INCREF(self->unconsumed_tail);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
770 Py_XDECREF(retval->unused_data);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
771 Py_XDECREF(retval->unconsumed_tail);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
772 retval->unused_data = self->unused_data;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
773 retval->unconsumed_tail = self->unconsumed_tail;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
774
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
775 /* Mark it as being initialized */
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
776 retval->is_initialised = 1;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
777
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
778 LEAVE_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
779 return (PyObject *)retval;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
780
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
781 error:
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
782 LEAVE_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
783 Py_XDECREF(retval);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
784 return NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
785 }
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
786
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
787 PyDoc_STRVAR(decomp_copy__doc__,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
788 "copy() -- Return a copy of the decompression object.");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
789
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
790 static PyObject *
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
791 PyZlib_uncopy(compobject *self)
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
792 {
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
793 compobject *retval = NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
794 int err;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
795
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
796 retval = newcompobject(&Decomptype);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
797 if (!retval) return NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
798
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
799 /* Copy the zstream state
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
800 * We use ENTER_ZLIB / LEAVE_ZLIB to make this thread-safe
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
801 */
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
802 ENTER_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
803 err = inflateCopy(&retval->zst, &self->zst);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
804 switch(err) {
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
805 case(Z_OK):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
806 break;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
807 case(Z_STREAM_ERROR):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
808 PyErr_SetString(PyExc_ValueError, "Inconsistent stream state");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
809 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
810 case(Z_MEM_ERROR):
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
811 PyErr_SetString(PyExc_MemoryError,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
812 "Can't allocate memory for decompression object");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
813 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
814 default:
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
815 zlib_error(self->zst, err, "while copying decompression object");
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
816 goto error;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
817 }
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
818
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
819 Py_INCREF(self->unused_data);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
820 Py_INCREF(self->unconsumed_tail);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
821 Py_XDECREF(retval->unused_data);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
822 Py_XDECREF(retval->unconsumed_tail);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
823 retval->unused_data = self->unused_data;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
824 retval->unconsumed_tail = self->unconsumed_tail;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
825
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
826 /* Mark it as being initialized */
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
827 retval->is_initialised = 1;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
828
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
829 LEAVE_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
830 return (PyObject *)retval;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
831
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
832 error:
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
833 LEAVE_ZLIB(self);
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
834 Py_XDECREF(retval);
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
835 return NULL;
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
836 }
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
837 #endif
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
838
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
839 PyDoc_STRVAR(decomp_flush__doc__,
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
840 "flush( [length] ) -- Return a string containing any remaining\n"
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
841 "decompressed data. length, if given, is the initial size of the\n"
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36324
diff changeset
842 "output buffer.\n"
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
843 "\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
844 "The decompressor object can no longer be used after this call.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
845
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
846 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
847 PyZlib_unflush(compobject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
848 {
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
849 int err, length = DEFAULTALLOC;
20477
c23989e22ffa Simplify and fix error handling for most cases.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20475
diff changeset
850 PyObject * retval = NULL;
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
851 unsigned long start_total_out;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
852
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
853 if (!PyArg_ParseTuple(args, "|i:flush", &length))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
854 return NULL;
46370
2e917b0c8f6e Merged revisions 62194,62197-62198,62204-62205,62214,62219-62221,62227,62229-62231,62233-62235,62237-62239 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 46084
diff changeset
855 if (length <= 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
856 PyErr_SetString(PyExc_ValueError, "length must be greater than zero");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
857 return NULL;
46370
2e917b0c8f6e Merged revisions 62194,62197-62198,62204-62205,62214,62219-62221,62227,62229-62231,62233-62235,62237-62239 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 46084
diff changeset
858 }
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
859 if (!(retval = PyBytes_FromStringAndSize(NULL, length)))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
860 return NULL;
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
861
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
862
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
863 ENTER_ZLIB(self);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
864
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
865 start_total_out = self->zst.total_out;
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
866 self->zst.avail_out = length;
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
867 self->zst.next_out = (Byte *)PyBytes_AS_STRING(retval);
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
868
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
869 Py_BEGIN_ALLOW_THREADS
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
870 err = inflate(&(self->zst), Z_FINISH);
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
871 Py_END_ALLOW_THREADS
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
872
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
873 /* while Z_OK and the output buffer is full, there might be more output,
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
874 so extend the output buffer and try again */
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
875 while ((err == Z_OK || err == Z_BUF_ERROR) && self->zst.avail_out == 0) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
876 if (_PyBytes_Resize(&retval, length << 1) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
877 Py_DECREF(retval);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
878 retval = NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
879 goto error;
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
880 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
881 self->zst.next_out = (Byte *)PyBytes_AS_STRING(retval) + length;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
882 self->zst.avail_out = length;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
883 length = length << 1;
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
884
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
885 Py_BEGIN_ALLOW_THREADS
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
886 err = inflate(&(self->zst), Z_FINISH);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
887 Py_END_ALLOW_THREADS
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
888 }
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
889
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
890 /* If flushmode is Z_FINISH, we also have to call deflateEnd() to free
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
891 various data structures. Note we should only get Z_STREAM_END when
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
892 flushmode is Z_FINISH */
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
893 if (err == Z_STREAM_END) {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
894 err = inflateEnd(&(self->zst));
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
895 self->is_initialised = 0;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
896 if (err != Z_OK) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
897 zlib_error(self->zst, err, "from inflateEnd()");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
898 Py_DECREF(retval);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
899 retval = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
900 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
901 }
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
902 }
49051
c1a8f6b648ea Fixes release blocker issue #3492 and #3790.
Gregory P. Smith <greg@mad-scientist.com>
parents: 48683
diff changeset
903 if (_PyBytes_Resize(&retval, self->zst.total_out - start_total_out) < 0) {
41829
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
904 Py_DECREF(retval);
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
905 retval = NULL;
f7f2a49c1f2e zlib now uses bytes everywhere, and the test passes.
Guido van Rossum <guido@python.org>
parents: 39442
diff changeset
906 }
27653
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
907
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
908 error:
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
diff changeset
909
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
910 LEAVE_ZLIB(self);
19798
091c01d07d98 Patch #450702: allow threads when calling into zlib, protect usage of
Martin v. Löwis <martin@v.loewis.de>
parents: 16735
diff changeset
911
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
912 return retval;
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
913 }
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
914
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
915 static PyMethodDef comp_methods[] =
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
916 {
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
917 {"compress", (binaryfunc)PyZlib_objcompress, METH_VARARGS,
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
918 comp_compress__doc__},
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
919 {"flush", (binaryfunc)PyZlib_flush, METH_VARARGS,
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
920 comp_flush__doc__},
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
921 #ifdef HAVE_ZLIB_COPY
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
922 {"copy", (PyCFunction)PyZlib_copy, METH_NOARGS,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
923 comp_copy__doc__},
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
924 #endif
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
925 {NULL, NULL}
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
926 };
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
927
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
928 static PyMethodDef Decomp_methods[] =
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
929 {
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
930 {"decompress", (binaryfunc)PyZlib_objdecompress, METH_VARARGS,
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
931 decomp_decompress__doc__},
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
932 {"flush", (binaryfunc)PyZlib_unflush, METH_VARARGS,
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
933 decomp_flush__doc__},
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
934 #ifdef HAVE_ZLIB_COPY
38453
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
935 {"copy", (PyCFunction)PyZlib_uncopy, METH_NOARGS,
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents: 37879
diff changeset
936 decomp_copy__doc__},
39442
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
937 #endif
20469
c46e94fd6986 Reformat!
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
diff changeset
938 {NULL, NULL}
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
939 };
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
940
48413
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
941 #define COMP_OFF(x) offsetof(compobject, x)
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
942 static PyMemberDef Decomp_members[] = {
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
943 {"unused_data", T_OBJECT, COMP_OFF(unused_data), READONLY},
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
944 {"unconsumed_tail", T_OBJECT, COMP_OFF(unconsumed_tail), READONLY},
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
945 {NULL},
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
946 };
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
947
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
948 PyDoc_STRVAR(adler32__doc__,
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
949 "adler32(string[, start]) -- Compute an Adler-32 checksum of string.\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
950 "\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
951 "An optional starting value can be specified. The returned checksum is\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
952 "an integer.");
5722
6c9736865608 Doc strings (AMK).
Guido van Rossum <guido@python.org>
parents: 5352
diff changeset
953
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
954 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
955 PyZlib_adler32(PyObject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
956 {
46084
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Christian Heimes <christian@cheimes.de>
parents: 46042
diff changeset
957 unsigned int adler32val = 1; /* adler32(0L, Z_NULL, 0) */
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
958 Py_buffer pbuf;
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
959
57736
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
960 if (!PyArg_ParseTuple(args, "y*|I:adler32", &pbuf, &adler32val))
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
961 return NULL;
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
962 /* Releasing the GIL for very small buffers is inefficient
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
963 and may lower performance */
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
964 if (pbuf.len > 1024*5) {
68054
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
965 unsigned char *buf = pbuf.buf;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
966 Py_ssize_t len = pbuf.len;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
967
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
968 Py_BEGIN_ALLOW_THREADS
68054
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
969 /* Avoid truncation of length for very large buffers. adler32() takes
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
970 length as an unsigned int, which may be narrower than Py_ssize_t. */
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
971 while (len > (size_t) UINT_MAX) {
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
972 adler32val = adler32(adler32val, buf, UINT_MAX);
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
973 buf += (size_t) UINT_MAX;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
974 len -= (size_t) UINT_MAX;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
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parents: 61523
diff changeset
975 }
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
976 adler32val = adler32(adler32val, buf, len);
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
977 Py_END_ALLOW_THREADS
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
978 } else {
57736
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
979 adler32val = adler32(adler32val, pbuf.buf, pbuf.len);
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
980 }
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
981 PyBuffer_Release(&pbuf);
45951
132cf3a79126 crc32 always returns unsigned. cleanup the code a bit and revert r61648 with
Gregory P. Smith <greg@mad-scientist.com>
parents: 45935
diff changeset
982 return PyLong_FromUnsignedLong(adler32val & 0xffffffffU);
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
983 }
20484
1a9494f9edb2 Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 20483
diff changeset
984
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
985 PyDoc_STRVAR(crc32__doc__,
20485
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
986 "crc32(string[, start]) -- Compute a CRC-32 checksum of string.\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
987 "\n"
4af8d24fa691 Simplify and regularize docstrings. Also reformat so that each docstring
Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
988 "An optional starting value can be specified. The returned checksum is\n"
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23295
diff changeset
989 "an integer.");
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
990
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
991 static PyObject *
13496
03bc51e43f7a ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 12576
diff changeset
992 PyZlib_crc32(PyObject *self, PyObject *args)
5352
d5757aad1a4f Added Andrew Kuchling's zlib module.
Guido van Rossum <guido@python.org>
parents:
diff changeset
993 {
46084
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Christian Heimes <christian@cheimes.de>
parents: 46042
diff changeset
994 unsigned int crc32val = 0; /* crc32(0L, Z_NULL, 0) */
48683
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
995 Py_buffer pbuf;
cd3b0b7fd8e1 Merged revisions 65654 via svnmerge from
Martin v. Löwis <martin@v.loewis.de>
parents: 48413
diff changeset
996 int signed_val;
46084
6bea2f1351b1 Merged revisions 61834,61841-61842,61851-61853,61863-61864,61869-61870,61874,61889 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 46042
diff changeset
997
57736
919e2142726e Merged revisions 76836 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51270
diff changeset
998 if (!PyArg_ParseTuple(args, "y*|I:crc32", &pbuf, &crc32val))
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
diff changeset
999 return NULL;
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
1000 /* Releasing the GIL for very small buffers is inefficient
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
1001 and may lower performance */
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
1002 if (pbuf.len > 1024*5) {
68054
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parents: 61523
diff changeset
1003 unsigned char *buf = pbuf.buf;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
1004 Py_ssize_t len = pbuf.len;
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
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parents: 61523
diff changeset
1005
50453
400cfcaa8d46 Issue #4738: finer-grained locking in the zlib module.
Antoine Pitrou <solipsis@pitrou.net>
parents: 49051
diff changeset
1006 Py_BEGIN_ALLOW_THREADS
68054
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
1007 /* Avoid truncation of length for very large buffers. crc32() takes
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 61523
diff changeset
1008 length as an unsigned int, which may be narrower than Py_ssize_t. */
f8a77fd675f5 Merged revisions 88460,88464,88466,88486,88511,88652 via svnmerge from
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parents: 61523
diff changeset
1009 while (len > (size_t) UINT_MAX) {
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parents: 61523
diff changeset
1010 crc32val = crc32(crc32val, buf, UINT_MAX);
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parents: 61523
diff changeset
1011 buf += (size_t) UINT_MAX;
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1012 len -= (size_t) UINT_MAX;
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1013 }
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1014 signed_val = crc32(crc32val, buf, len);
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1015 Py_END_ALLOW_THREADS
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1016 } else {
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1017 signed_val = crc32(crc32val, pbuf.buf, pbuf.len);
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1018 }
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1019 PyBuffer_Release(&pbuf);
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diff changeset
1020 return PyLong_FromUnsignedLong(signed_val & 0xffffffffU);
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diff changeset
1021 }
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1022
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1023
d5757aad1a4f Added Andrew Kuchling's zlib module.
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diff changeset
1024 static PyMethodDef zlib_methods[] =
d5757aad1a4f Added Andrew Kuchling's zlib module.
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diff changeset
1025 {
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1026 {"adler32", (PyCFunction)PyZlib_adler32, METH_VARARGS,
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1027 adler32__doc__},
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1028 {"compress", (PyCFunction)PyZlib_compress, METH_VARARGS,
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1029 compress__doc__},
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1030 {"compressobj", (PyCFunction)PyZlib_compressobj, METH_VARARGS,
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1031 compressobj__doc__},
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1032 {"crc32", (PyCFunction)PyZlib_crc32, METH_VARARGS,
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1033 crc32__doc__},
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1034 {"decompress", (PyCFunction)PyZlib_decompress, METH_VARARGS,
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1035 decompress__doc__},
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1036 {"decompressobj", (PyCFunction)PyZlib_decompressobj, METH_VARARGS,
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1037 decompressobj__doc__},
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1038 {NULL, NULL}
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1039 };
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parents:
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1040
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1041 static PyTypeObject Comptype = {
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1042 PyVarObject_HEAD_INIT(0, 0)
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1043 "zlib.Compress",
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1044 sizeof(compobject),
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1045 0,
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1046 (destructor)Comp_dealloc, /*tp_dealloc*/
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1047 0, /*tp_print*/
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1048 0, /*tp_getattr*/
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1049 0, /*tp_setattr*/
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1050 0, /*tp_reserved*/
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1051 0, /*tp_repr*/
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1052 0, /*tp_as_number*/
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1053 0, /*tp_as_sequence*/
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1054 0, /*tp_as_mapping*/
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1055 0, /*tp_hash*/
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1056 0, /*tp_call*/
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1057 0, /*tp_str*/
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1058 0, /*tp_getattro*/
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1059 0, /*tp_setattro*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
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1060 0, /*tp_as_buffer*/
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1061 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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1062 0, /*tp_doc*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
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1063 0, /*tp_traverse*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
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1064 0, /*tp_clear*/
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1065 0, /*tp_richcompare*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
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1066 0, /*tp_weaklistoffset*/
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1067 0, /*tp_iter*/
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1068 0, /*tp_iternext*/
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1069 comp_methods, /*tp_methods*/
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1070 };
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1071
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1072 static PyTypeObject Decomptype = {
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1073 PyVarObject_HEAD_INIT(0, 0)
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1074 "zlib.Decompress",
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1075 sizeof(compobject),
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1076 0,
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1077 (destructor)Decomp_dealloc, /*tp_dealloc*/
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1078 0, /*tp_print*/
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1079 0, /*tp_getattr*/
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1080 0, /*tp_setattr*/
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1081 0, /*tp_reserved*/
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1082 0, /*tp_repr*/
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1083 0, /*tp_as_number*/
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1084 0, /*tp_as_sequence*/
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1085 0, /*tp_as_mapping*/
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1086 0, /*tp_hash*/
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1087 0, /*tp_call*/
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1088 0, /*tp_str*/
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1089 0, /*tp_getattro*/
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1090 0, /*tp_setattro*/
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1091 0, /*tp_as_buffer*/
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1092 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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1093 0, /*tp_doc*/
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1094 0, /*tp_traverse*/
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1095 0, /*tp_clear*/
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1096 0, /*tp_richcompare*/
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1097 0, /*tp_weaklistoffset*/
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1098 0, /*tp_iter*/
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1099 0, /*tp_iternext*/
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1100 Decomp_methods, /*tp_methods*/
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1101 Decomp_members, /*tp_members*/
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1102 };
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1103
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1104 PyDoc_STRVAR(zlib_module_documentation,
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1105 "The functions in this module allow compression and decompression using the\n"
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1106 "zlib library, which is based on GNU zip.\n"
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1107 "\n"
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1108 "adler32(string[, start]) -- Compute an Adler-32 checksum.\n"
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parents: 20484
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1109 "compress(string[, level]) -- Compress string, with compression level in 1-9.\n"
5722
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Guido van Rossum <guido@python.org>
parents: 5352
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1110 "compressobj([level]) -- Return a compressor object.\n"
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parents: 20484
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1111 "crc32(string[, start]) -- Compute a CRC-32 checksum.\n"
11607
69216c11a1bd Fix typo in docstring: wbites -> wbits
Andrew M. Kuchling <amk@amk.ca>
parents: 10571
diff changeset
1112 "decompress(string,[wbits],[bufsize]) -- Decompresses a compressed string.\n"
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parents: 20484
diff changeset
1113 "decompressobj([wbits]) -- Return a decompressor object.\n"
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Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
1114 "\n"
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Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
1115 "'wbits' is window buffer size.\n"
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Tim Peters <tim.peters@gmail.com>
parents: 20484
diff changeset
1116 "Compressor objects support compress() and flush() methods; decompressor\n"
23832
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parents: 23295
diff changeset
1117 "objects support decompress() and flush().");
5722
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Guido van Rossum <guido@python.org>
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diff changeset
1118
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1119 static struct PyModuleDef zlibmodule = {
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1120 PyModuleDef_HEAD_INIT,
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1121 "zlib",
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1122 zlib_module_documentation,
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1123 -1,
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1124 zlib_methods,
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1125 NULL,
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1126 NULL,
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1127 NULL,
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1128 NULL
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1129 };
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1130
24363
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Mark Hammond <mhammond@skippinet.com.au>
parents: 24283
diff changeset
1131 PyMODINIT_FUNC
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1132 PyInit_zlib(void)
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Guido van Rossum <guido@python.org>
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diff changeset
1133 {
22729
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Fred Drake <fdrake@acm.org>
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1134 PyObject *m, *ver;
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1135 if (PyType_Ready(&Comptype) < 0)
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1136 return NULL;
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1137 if (PyType_Ready(&Decomptype) < 0)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
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1138 return NULL;
47580
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Martin v. Löwis <martin@v.loewis.de>
parents: 47300
diff changeset
1139 m = PyModule_Create(&zlibmodule);
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1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35914
diff changeset
1140 if (m == NULL)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
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1141 return NULL;
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Fred Drake <fdrake@acm.org>
parents: 22217
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1142
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
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1143 ZlibError = PyErr_NewException("zlib.error", NULL, NULL);
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Fred Drake <fdrake@acm.org>
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1144 if (ZlibError != NULL) {
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parents: 22217
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1145 Py_INCREF(ZlibError);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
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1146 PyModule_AddObject(m, "error", ZlibError);
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Fred Drake <fdrake@acm.org>
parents: 22217
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1147 }
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Jeremy Hylton <jeremy@alum.mit.edu>
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1148 PyModule_AddIntConstant(m, "MAX_WBITS", MAX_WBITS);
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
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1149 PyModule_AddIntConstant(m, "DEFLATED", DEFLATED);
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1150 PyModule_AddIntConstant(m, "DEF_MEM_LEVEL", DEF_MEM_LEVEL);
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1151 PyModule_AddIntConstant(m, "Z_BEST_SPEED", Z_BEST_SPEED);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1152 PyModule_AddIntConstant(m, "Z_BEST_COMPRESSION", Z_BEST_COMPRESSION);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1153 PyModule_AddIntConstant(m, "Z_DEFAULT_COMPRESSION", Z_DEFAULT_COMPRESSION);
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 20466
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1154 PyModule_AddIntConstant(m, "Z_FILTERED", Z_FILTERED);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1155 PyModule_AddIntConstant(m, "Z_HUFFMAN_ONLY", Z_HUFFMAN_ONLY);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1156 PyModule_AddIntConstant(m, "Z_DEFAULT_STRATEGY", Z_DEFAULT_STRATEGY);
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Tim Peters <tim.peters@gmail.com>
parents: 20483
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1157
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1158 PyModule_AddIntConstant(m, "Z_FINISH", Z_FINISH);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1159 PyModule_AddIntConstant(m, "Z_NO_FLUSH", Z_NO_FLUSH);
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Jeremy Hylton <jeremy@alum.mit.edu>
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1160 PyModule_AddIntConstant(m, "Z_SYNC_FLUSH", Z_SYNC_FLUSH);
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1161 PyModule_AddIntConstant(m, "Z_FULL_FLUSH", Z_FULL_FLUSH);
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Tim Peters <tim.peters@gmail.com>
parents: 20483
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1162
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parents: 42334
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1163 ver = PyUnicode_FromString(ZLIB_VERSION);
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Fred Drake <fdrake@acm.org>
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1164 if (ver != NULL)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61370
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1165 PyModule_AddObject(m, "ZLIB_VERSION", ver);
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Martin v. Löwis <martin@v.loewis.de>
parents: 16735
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1166
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Guido van Rossum <guido@python.org>
parents: 24363
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1167 PyModule_AddStringConstant(m, "__version__", "1.0");
106a44a4b975 - Thanks to Scott David Daniels, a subtle bug in how the zlib
Guido van Rossum <guido@python.org>
parents: 24363
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1168
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Martin v. Löwis <martin@v.loewis.de>
parents: 47300
diff changeset
1169 return m;
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Guido van Rossum <guido@python.org>
parents:
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1170 }