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annotate contrib/python-zstandard/c-ext/compressionparams.c @ 30507:d7a05d8351d0

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zstd: fix compilation with Solaris Studio Without these changes, Solaris Studio (12.4) gives us "syntax error: empty declaration" on these two lines.
author Danek Duvall <danek.duvall@oracle.com>
date Tue, 22 Nov 2016 13:32:05 -0800
parents b86a448a2965
children c32454d69b85
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
30444
b86a448a2965 zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
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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 void ztopy_compression_parameters(CompressionParametersObject* params, ZSTD_compressionParameters* zparams) {
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12 zparams->windowLog = params->windowLog;
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13 zparams->chainLog = params->chainLog;
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14 zparams->hashLog = params->hashLog;
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15 zparams->searchLog = params->searchLog;
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16 zparams->searchLength = params->searchLength;
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17 zparams->targetLength = params->targetLength;
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18 zparams->strategy = params->strategy;
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19 }
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20
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21 CompressionParametersObject* get_compression_parameters(PyObject* self, PyObject* args) {
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22 int compressionLevel;
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23 unsigned PY_LONG_LONG sourceSize = 0;
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24 Py_ssize_t dictSize = 0;
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25 ZSTD_compressionParameters params;
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26 CompressionParametersObject* result;
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27
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28 if (!PyArg_ParseTuple(args, "i|Kn", &compressionLevel, &sourceSize, &dictSize)) {
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29 return NULL;
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30 }
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31
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32 params = ZSTD_getCParams(compressionLevel, sourceSize, dictSize);
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33
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34 result = PyObject_New(CompressionParametersObject, &CompressionParametersType);
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35 if (!result) {
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36 return NULL;
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37 }
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38
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39 result->windowLog = params.windowLog;
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40 result->chainLog = params.chainLog;
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41 result->hashLog = params.hashLog;
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42 result->searchLog = params.searchLog;
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43 result->searchLength = params.searchLength;
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44 result->targetLength = params.targetLength;
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45 result->strategy = params.strategy;
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46
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47 return result;
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48 }
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49
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50 PyObject* estimate_compression_context_size(PyObject* self, PyObject* args) {
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51 CompressionParametersObject* params;
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52 ZSTD_compressionParameters zparams;
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53 PyObject* result;
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54
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55 if (!PyArg_ParseTuple(args, "O!", &CompressionParametersType, &params)) {
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56 return NULL;
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57 }
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58
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59 ztopy_compression_parameters(params, &zparams);
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60 result = PyLong_FromSize_t(ZSTD_estimateCCtxSize(zparams));
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61 return result;
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62 }
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63
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64 PyDoc_STRVAR(CompressionParameters__doc__,
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65 "CompressionParameters: low-level control over zstd compression");
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66
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67 static PyObject* CompressionParameters_new(PyTypeObject* subtype, PyObject* args, PyObject* kwargs) {
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68 CompressionParametersObject* self;
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69 unsigned windowLog;
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70 unsigned chainLog;
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71 unsigned hashLog;
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72 unsigned searchLog;
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73 unsigned searchLength;
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74 unsigned targetLength;
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75 unsigned strategy;
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76
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77 if (!PyArg_ParseTuple(args, "IIIIIII", &windowLog, &chainLog, &hashLog, &searchLog,
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78 &searchLength, &targetLength, &strategy)) {
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79 return NULL;
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80 }
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81
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82 if (windowLog < ZSTD_WINDOWLOG_MIN || windowLog > ZSTD_WINDOWLOG_MAX) {
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83 PyErr_SetString(PyExc_ValueError, "invalid window log value");
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84 return NULL;
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85 }
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86
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87 if (chainLog < ZSTD_CHAINLOG_MIN || chainLog > ZSTD_CHAINLOG_MAX) {
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88 PyErr_SetString(PyExc_ValueError, "invalid chain log value");
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89 return NULL;
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90 }
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91
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92 if (hashLog < ZSTD_HASHLOG_MIN || hashLog > ZSTD_HASHLOG_MAX) {
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93 PyErr_SetString(PyExc_ValueError, "invalid hash log value");
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94 return NULL;
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95 }
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96
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97 if (searchLog < ZSTD_SEARCHLOG_MIN || searchLog > ZSTD_SEARCHLOG_MAX) {
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98 PyErr_SetString(PyExc_ValueError, "invalid search log value");
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99 return NULL;
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100 }
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101
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102 if (searchLength < ZSTD_SEARCHLENGTH_MIN || searchLength > ZSTD_SEARCHLENGTH_MAX) {
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103 PyErr_SetString(PyExc_ValueError, "invalid search length value");
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104 return NULL;
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105 }
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106
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107 if (targetLength < ZSTD_TARGETLENGTH_MIN || targetLength > ZSTD_TARGETLENGTH_MAX) {
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108 PyErr_SetString(PyExc_ValueError, "invalid target length value");
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109 return NULL;
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110 }
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111
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112 if (strategy < ZSTD_fast || strategy > ZSTD_btopt) {
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113 PyErr_SetString(PyExc_ValueError, "invalid strategy value");
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114 return NULL;
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115 }
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116
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117 self = (CompressionParametersObject*)subtype->tp_alloc(subtype, 1);
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118 if (!self) {
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119 return NULL;
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120 }
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121
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122 self->windowLog = windowLog;
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123 self->chainLog = chainLog;
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124 self->hashLog = hashLog;
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125 self->searchLog = searchLog;
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126 self->searchLength = searchLength;
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127 self->targetLength = targetLength;
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128 self->strategy = strategy;
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129
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130 return (PyObject*)self;
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131 }
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132
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133 static void CompressionParameters_dealloc(PyObject* self) {
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134 PyObject_Del(self);
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135 }
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parents:
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136
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137 static Py_ssize_t CompressionParameters_length(PyObject* self) {
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138 return 7;
30507
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Danek Duvall <danek.duvall@oracle.com>
parents: 30444
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139 }
30444
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140
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Gregory Szorc <gregory.szorc@gmail.com>
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141 static PyObject* CompressionParameters_item(PyObject* o, Py_ssize_t i) {
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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142 CompressionParametersObject* self = (CompressionParametersObject*)o;
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parents:
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143
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Gregory Szorc <gregory.szorc@gmail.com>
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144 switch (i) {
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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145 case 0:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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146 return PyLong_FromLong(self->windowLog);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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147 case 1:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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148 return PyLong_FromLong(self->chainLog);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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149 case 2:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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150 return PyLong_FromLong(self->hashLog);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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151 case 3:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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152 return PyLong_FromLong(self->searchLog);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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153 case 4:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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154 return PyLong_FromLong(self->searchLength);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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155 case 5:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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156 return PyLong_FromLong(self->targetLength);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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157 case 6:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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158 return PyLong_FromLong(self->strategy);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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159 default:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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160 PyErr_SetString(PyExc_IndexError, "index out of range");
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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161 return NULL;
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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162 }
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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163 }
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Gregory Szorc <gregory.szorc@gmail.com>
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164
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Gregory Szorc <gregory.szorc@gmail.com>
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165 static PySequenceMethods CompressionParameters_sq = {
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Gregory Szorc <gregory.szorc@gmail.com>
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166 CompressionParameters_length, /* sq_length */
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Gregory Szorc <gregory.szorc@gmail.com>
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167 0, /* sq_concat */
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Gregory Szorc <gregory.szorc@gmail.com>
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168 0, /* sq_repeat */
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Gregory Szorc <gregory.szorc@gmail.com>
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169 CompressionParameters_item, /* sq_item */
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Gregory Szorc <gregory.szorc@gmail.com>
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170 0, /* sq_ass_item */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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171 0, /* sq_contains */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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172 0, /* sq_inplace_concat */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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173 0 /* sq_inplace_repeat */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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174 };
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175
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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176 PyTypeObject CompressionParametersType = {
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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177 PyVarObject_HEAD_INIT(NULL, 0)
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Gregory Szorc <gregory.szorc@gmail.com>
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178 "CompressionParameters", /* tp_name */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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179 sizeof(CompressionParametersObject), /* tp_basicsize */
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180 0, /* tp_itemsize */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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181 (destructor)CompressionParameters_dealloc, /* tp_dealloc */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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182 0, /* tp_print */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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183 0, /* tp_getattr */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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184 0, /* tp_setattr */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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185 0, /* tp_compare */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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186 0, /* tp_repr */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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187 0, /* tp_as_number */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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188 &CompressionParameters_sq, /* tp_as_sequence */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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189 0, /* tp_as_mapping */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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190 0, /* tp_hash */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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191 0, /* tp_call */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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192 0, /* tp_str */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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193 0, /* tp_getattro */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
194 0, /* tp_setattro */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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195 0, /* tp_as_buffer */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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196 Py_TPFLAGS_DEFAULT, /* tp_flags */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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197 CompressionParameters__doc__, /* tp_doc */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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198 0, /* tp_traverse */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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199 0, /* tp_clear */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
200 0, /* tp_richcompare */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
201 0, /* tp_weaklistoffset */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
202 0, /* tp_iter */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
203 0, /* tp_iternext */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
204 0, /* tp_methods */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
205 0, /* tp_members */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
206 0, /* tp_getset */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
207 0, /* tp_base */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
208 0, /* tp_dict */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
209 0, /* tp_descr_get */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
210 0, /* tp_descr_set */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
211 0, /* tp_dictoffset */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
212 0, /* tp_init */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
213 0, /* tp_alloc */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
214 CompressionParameters_new, /* tp_new */
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
215 };
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
216
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
217 void compressionparams_module_init(PyObject* mod) {
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
218 Py_TYPE(&CompressionParametersType) = &PyType_Type;
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
219 if (PyType_Ready(&CompressionParametersType) < 0) {
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
220 return;
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
221 }
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
222
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
223 Py_IncRef((PyObject*)&CompressionParametersType);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
224 PyModule_AddObject(mod, "CompressionParameters",
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
225 (PyObject*)&CompressionParametersType);
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
226 }