Mercurial > public > mercurial-scm > hg
annotate contrib/python-zstandard/c-ext/compressobj.c @ 53042:cdd7bf612c7b stable tip
bundle-spec: properly format boolean parameter (issue6960)
This was breaking automatic clone bundle generation. This changeset fixes it and
add a test to catch it in the future.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 11 Mar 2025 02:29:42 +0100 |
parents | e92ca942ddca |
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1 /** |
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2 * Copyright (c) 2016-present, Gregory Szorc |
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3 * All rights reserved. |
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4 * |
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5 * This software may be modified and distributed under the terms |
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6 * of the BSD license. See the LICENSE file for details. |
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7 */ |
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8 |
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9 #include "python-zstandard.h" |
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10 |
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11 extern PyObject* ZstdError; |
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12 |
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13 PyDoc_STRVAR(ZstdCompressionObj__doc__, |
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14 "Perform compression using a standard library compatible API.\n" |
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15 ); |
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16 |
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17 static void ZstdCompressionObj_dealloc(ZstdCompressionObj* self) { |
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18 PyMem_Free(self->output.dst); |
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19 self->output.dst = NULL; |
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20 |
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21 Py_XDECREF(self->compressor); |
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22 |
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23 PyObject_Del(self); |
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24 } |
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25 |
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26 static PyObject* ZstdCompressionObj_compress(ZstdCompressionObj* self, PyObject* args, PyObject* kwargs) { |
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27 static char* kwlist[] = { |
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28 "data", |
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29 NULL |
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30 }; |
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31 |
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32 Py_buffer source; |
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33 ZSTD_inBuffer input; |
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34 size_t zresult; |
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35 PyObject* result = NULL; |
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36 Py_ssize_t resultSize = 0; |
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37 |
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38 if (self->finished) { |
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39 PyErr_SetString(ZstdError, "cannot call compress() after compressor finished"); |
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40 return NULL; |
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41 } |
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42 |
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43 #if PY_MAJOR_VERSION >= 3 |
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44 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y*:compress", |
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45 #else |
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46 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*:compress", |
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47 #endif |
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48 kwlist, &source)) { |
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49 return NULL; |
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50 } |
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51 |
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52 if (!PyBuffer_IsContiguous(&source, 'C') || source.ndim > 1) { |
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53 PyErr_SetString(PyExc_ValueError, |
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54 "data buffer should be contiguous and have at most one dimension"); |
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55 goto finally; |
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56 } |
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57 |
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58 input.src = source.buf; |
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59 input.size = source.len; |
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60 input.pos = 0; |
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61 |
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62 while (input.pos < (size_t)source.len) { |
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63 Py_BEGIN_ALLOW_THREADS |
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64 zresult = ZSTD_compressStream2(self->compressor->cctx, &self->output, |
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65 &input, ZSTD_e_continue); |
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66 Py_END_ALLOW_THREADS |
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67 |
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68 if (ZSTD_isError(zresult)) { |
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69 PyErr_Format(ZstdError, "zstd compress error: %s", ZSTD_getErrorName(zresult)); |
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70 Py_CLEAR(result); |
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71 goto finally; |
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72 } |
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73 |
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74 if (self->output.pos) { |
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75 if (result) { |
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76 resultSize = PyBytes_GET_SIZE(result); |
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77 |
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78 if (safe_pybytes_resize(&result, resultSize + self->output.pos)) { |
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79 Py_CLEAR(result); |
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80 goto finally; |
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81 } |
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82 |
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83 memcpy(PyBytes_AS_STRING(result) + resultSize, |
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84 self->output.dst, self->output.pos); |
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85 } |
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86 else { |
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87 result = PyBytes_FromStringAndSize(self->output.dst, self->output.pos); |
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88 if (!result) { |
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89 goto finally; |
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90 } |
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91 } |
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92 |
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93 self->output.pos = 0; |
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94 } |
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95 } |
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96 |
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97 if (NULL == result) { |
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98 result = PyBytes_FromString(""); |
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99 } |
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100 |
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101 finally: |
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102 PyBuffer_Release(&source); |
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103 |
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104 return result; |
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105 } |
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106 |
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107 static PyObject* ZstdCompressionObj_flush(ZstdCompressionObj* self, PyObject* args, PyObject* kwargs) { |
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108 static char* kwlist[] = { |
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109 "flush_mode", |
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110 NULL |
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111 }; |
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112 |
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113 int flushMode = compressorobj_flush_finish; |
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114 size_t zresult; |
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115 PyObject* result = NULL; |
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116 Py_ssize_t resultSize = 0; |
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117 ZSTD_inBuffer input; |
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118 ZSTD_EndDirective zFlushMode; |
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119 |
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120 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i:flush", kwlist, &flushMode)) { |
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121 return NULL; |
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122 } |
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123 |
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124 if (flushMode != compressorobj_flush_finish && flushMode != compressorobj_flush_block) { |
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125 PyErr_SetString(PyExc_ValueError, "flush mode not recognized"); |
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126 return NULL; |
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127 } |
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128 |
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129 if (self->finished) { |
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130 PyErr_SetString(ZstdError, "compressor object already finished"); |
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131 return NULL; |
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132 } |
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133 |
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134 switch (flushMode) { |
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135 case compressorobj_flush_block: |
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136 zFlushMode = ZSTD_e_flush; |
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137 break; |
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138 |
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139 case compressorobj_flush_finish: |
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140 zFlushMode = ZSTD_e_end; |
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141 self->finished = 1; |
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142 break; |
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143 |
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144 default: |
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145 PyErr_SetString(ZstdError, "unhandled flush mode"); |
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146 return NULL; |
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147 } |
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148 |
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149 assert(self->output.pos == 0); |
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150 |
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151 input.src = NULL; |
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152 input.size = 0; |
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153 input.pos = 0; |
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154 |
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155 while (1) { |
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156 Py_BEGIN_ALLOW_THREADS |
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157 zresult = ZSTD_compressStream2(self->compressor->cctx, &self->output, |
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158 &input, zFlushMode); |
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159 Py_END_ALLOW_THREADS |
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160 |
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161 if (ZSTD_isError(zresult)) { |
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162 PyErr_Format(ZstdError, "error ending compression stream: %s", |
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163 ZSTD_getErrorName(zresult)); |
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164 return NULL; |
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165 } |
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166 |
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167 if (self->output.pos) { |
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168 if (result) { |
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169 resultSize = PyBytes_GET_SIZE(result); |
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170 |
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171 if (safe_pybytes_resize(&result, resultSize + self->output.pos)) { |
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172 Py_XDECREF(result); |
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173 return NULL; |
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174 } |
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175 |
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176 memcpy(PyBytes_AS_STRING(result) + resultSize, |
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177 self->output.dst, self->output.pos); |
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178 } |
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179 else { |
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180 result = PyBytes_FromStringAndSize(self->output.dst, self->output.pos); |
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181 if (!result) { |
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182 return NULL; |
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183 } |
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184 } |
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185 |
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186 self->output.pos = 0; |
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187 } |
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188 |
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|
189 if (!zresult) { |
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|
190 break; |
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|
191 } |
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|
192 } |
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193 |
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194 if (result) { |
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195 return result; |
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|
196 } |
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197 else { |
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198 return PyBytes_FromString(""); |
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|
199 } |
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|
200 } |
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|
201 |
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|
202 static PyMethodDef ZstdCompressionObj_methods[] = { |
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203 { "compress", (PyCFunction)ZstdCompressionObj_compress, METH_VARARGS | METH_KEYWORDS, |
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|
204 PyDoc_STR("compress data") }, |
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205 { "flush", (PyCFunction)ZstdCompressionObj_flush, METH_VARARGS | METH_KEYWORDS, |
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|
206 PyDoc_STR("finish compression operation") }, |
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|
207 { NULL, NULL } |
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|
208 }; |
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|
209 |
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|
210 PyTypeObject ZstdCompressionObjType = { |
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|
211 PyVarObject_HEAD_INIT(NULL, 0) |
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|
212 "zstd.ZstdCompressionObj", /* tp_name */ |
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|
213 sizeof(ZstdCompressionObj), /* tp_basicsize */ |
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|
214 0, /* tp_itemsize */ |
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|
215 (destructor)ZstdCompressionObj_dealloc, /* tp_dealloc */ |
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|
216 0, /* tp_print */ |
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|
217 0, /* tp_getattr */ |
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|
218 0, /* tp_setattr */ |
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|
219 0, /* tp_compare */ |
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|
220 0, /* tp_repr */ |
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|
221 0, /* tp_as_number */ |
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|
222 0, /* tp_as_sequence */ |
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|
223 0, /* tp_as_mapping */ |
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|
224 0, /* tp_hash */ |
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|
225 0, /* tp_call */ |
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|
226 0, /* tp_str */ |
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|
227 0, /* tp_getattro */ |
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|
228 0, /* tp_setattro */ |
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|
229 0, /* tp_as_buffer */ |
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parents:
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|
230 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
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parents:
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|
231 ZstdCompressionObj__doc__, /* tp_doc */ |
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|
232 0, /* tp_traverse */ |
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|
233 0, /* tp_clear */ |
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|
234 0, /* tp_richcompare */ |
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|
235 0, /* tp_weaklistoffset */ |
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parents:
diff
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236 0, /* tp_iter */ |
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237 0, /* tp_iternext */ |
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238 ZstdCompressionObj_methods, /* tp_methods */ |
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239 0, /* tp_members */ |
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240 0, /* tp_getset */ |
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241 0, /* tp_base */ |
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242 0, /* tp_dict */ |
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243 0, /* tp_descr_get */ |
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244 0, /* tp_descr_set */ |
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245 0, /* tp_dictoffset */ |
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246 0, /* tp_init */ |
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247 0, /* tp_alloc */ |
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248 PyType_GenericNew, /* tp_new */ |
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249 }; |
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250 |
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251 void compressobj_module_init(PyObject* module) { |
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252 Py_SET_TYPE(&ZstdCompressionObjType, &PyType_Type); |
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253 if (PyType_Ready(&ZstdCompressionObjType) < 0) { |
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254 return; |
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255 } |
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256 } |