Mercurial > cpython-lru_cache-weakref

annotate Modules/_sqlite/util.c @ 83447:678564fc0962 3.3

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#17789: test_random now works with unittest test discovery. Patch by Zachary Ware.
author Ezio Melotti <ezio.melotti@gmail.com>
date Fri, 19 Apr 2013 05:45:27 +0300
parents 55a89352e220
children b677f656c0bf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* util.c - various utility functions
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2 *
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e9cd15d539e1 Welcome to the UTF-8 world.
Florent Xicluna <florent.xicluna@gmail.com>
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3 * Copyright (C) 2005-2010 Gerhard Häring <gh@ghaering.de>
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4 *
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5 * This file is part of pysqlite.
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6 *
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7 * This software is provided 'as-is', without any express or implied
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8 * warranty. In no event will the authors be held liable for any damages
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9 * arising from the use of this software.
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10 *
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11 * Permission is granted to anyone to use this software for any purpose,
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12 * including commercial applications, and to alter it and redistribute it
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13 * freely, subject to the following restrictions:
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14 *
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15 * 1. The origin of this software must not be misrepresented; you must not
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16 * claim that you wrote the original software. If you use this software
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17 * in a product, an acknowledgment in the product documentation would be
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18 * appreciated but is not required.
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19 * 2. Altered source versions must be plainly marked as such, and must not be
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20 * misrepresented as being the original software.
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21 * 3. This notice may not be removed or altered from any source distribution.
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22 */
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23
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24 #include "module.h"
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25 #include "connection.h"
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26
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27 int pysqlite_step(sqlite3_stmt* statement, pysqlite_Connection* connection)
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28 {
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29 int rc;
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30
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31 if (statement == NULL) {
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32 /* this is a workaround for SQLite 3.5 and later. it now apparently
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33 * returns NULL for "no-operation" statements */
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34 rc = SQLITE_OK;
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35 } else {
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36 Py_BEGIN_ALLOW_THREADS
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37 rc = sqlite3_step(statement);
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38 Py_END_ALLOW_THREADS
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39 }
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40
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41 return rc;
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42 }
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43
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44 /**
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45 * Checks the SQLite error code and sets the appropriate DB-API exception.
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46 * Returns the error code (0 means no error occurred).
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47 */
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48 int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st)
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49 {
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50 int errorcode;
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51
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52 /* SQLite often doesn't report anything useful, unless you reset the statement first */
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53 if (st != NULL) {
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54 (void)sqlite3_reset(st);
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55 }
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56
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57 errorcode = sqlite3_errcode(db);
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58
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59 switch (errorcode)
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60 {
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61 case SQLITE_OK:
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62 PyErr_Clear();
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63 break;
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64 case SQLITE_INTERNAL:
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65 case SQLITE_NOTFOUND:
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66 PyErr_SetString(pysqlite_InternalError, sqlite3_errmsg(db));
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67 break;
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68 case SQLITE_NOMEM:
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69 (void)PyErr_NoMemory();
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70 break;
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71 case SQLITE_ERROR:
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72 case SQLITE_PERM:
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73 case SQLITE_ABORT:
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74 case SQLITE_BUSY:
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75 case SQLITE_LOCKED:
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76 case SQLITE_READONLY:
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77 case SQLITE_INTERRUPT:
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78 case SQLITE_IOERR:
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79 case SQLITE_FULL:
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80 case SQLITE_CANTOPEN:
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81 case SQLITE_PROTOCOL:
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82 case SQLITE_EMPTY:
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83 case SQLITE_SCHEMA:
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84 PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(db));
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85 break;
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86 case SQLITE_CORRUPT:
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87 PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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88 break;
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89 case SQLITE_TOOBIG:
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90 PyErr_SetString(pysqlite_DataError, sqlite3_errmsg(db));
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91 break;
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92 case SQLITE_CONSTRAINT:
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93 case SQLITE_MISMATCH:
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94 PyErr_SetString(pysqlite_IntegrityError, sqlite3_errmsg(db));
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95 break;
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96 case SQLITE_MISUSE:
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97 PyErr_SetString(pysqlite_ProgrammingError, sqlite3_errmsg(db));
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98 break;
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99 default:
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100 PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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101 break;
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102 }
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103
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104 return errorcode;
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105 }
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106
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107 #ifdef WORDS_BIGENDIAN
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108 # define IS_LITTLE_ENDIAN 0
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109 #else
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110 # define IS_LITTLE_ENDIAN 1
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111 #endif
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112
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113 PyObject *
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114 _pysqlite_long_from_int64(sqlite3_int64 value)
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115 {
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116 #ifdef HAVE_LONG_LONG
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117 # if SIZEOF_LONG_LONG < 8
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118 if (value > PY_LLONG_MAX || value < PY_LLONG_MIN) {
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119 return _PyLong_FromByteArray(&value, sizeof(value),
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120 IS_LITTLE_ENDIAN, 1 /* signed */);
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121 }
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122 # endif
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123 # if SIZEOF_LONG < SIZEOF_LONG_LONG
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124 if (value > LONG_MAX || value < LONG_MIN)
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125 return PyLong_FromLongLong(value);
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126 # endif
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127 #else
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128 # if SIZEOF_LONG < 8
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129 if (value > LONG_MAX || value < LONG_MIN) {
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130 return _PyLong_FromByteArray(&value, sizeof(value),
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131 IS_LITTLE_ENDIAN, 1 /* signed */);
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132 }
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133 # endif
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134 #endif
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135 return PyLong_FromLong(value);
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136 }
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137
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138 sqlite3_int64
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139 _pysqlite_long_as_int64(PyObject * py_val)
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140 {
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141 int overflow;
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142 #ifdef HAVE_LONG_LONG
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143 PY_LONG_LONG value = PyLong_AsLongLongAndOverflow(py_val, &overflow);
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144 #else
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145 long value = PyLong_AsLongAndOverflow(py_val, &overflow);
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146 #endif
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147 if (value == -1 && PyErr_Occurred())
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148 return -1;
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149 if (!overflow) {
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150 #ifdef HAVE_LONG_LONG
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151 # if SIZEOF_LONG_LONG > 8
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152 if (-0x8000000000000000LL <= value && value <= 0x7FFFFFFFFFFFFFFFLL)
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153 # endif
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154 #else
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155 # if SIZEOF_LONG > 8
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156 if (-0x8000000000000000L <= value && value <= 0x7FFFFFFFFFFFFFFFL)
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157 # endif
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158 #endif
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159 return value;
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160 }
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161 else if (sizeof(value) < sizeof(sqlite3_int64)) {
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162 sqlite3_int64 int64val;
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163 if (_PyLong_AsByteArray((PyLongObject *)py_val,
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164 (unsigned char *)&int64val, sizeof(int64val),
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165 IS_LITTLE_ENDIAN, 1 /* signed */) >= 0) {
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166 return int64val;
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167 }
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168 }
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169 PyErr_SetString(PyExc_OverflowError,
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170 "Python int too large to convert to SQLite INTEGER");
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171 return -1;
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172 }