Mercurial > cpython-lru_cache-weakref

annotate Modules/_csv.c @ 87488:124e51c19e4f

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Issue #19734: Also run pip version check in isolated mode
author Nick Coghlan <ncoghlan@gmail.com>
date Sun, 24 Nov 2013 16:49:20 +1000
parents c9efe992e9b2
children
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1 /* csv module */
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2
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3 /*
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4
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5 This module provides the low-level underpinnings of a CSV reading/writing
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6 module. Users should not use this module directly, but import the csv.py
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7 module instead.
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8
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9 */
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10
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11 #define MODULE_VERSION "1.0"
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12
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13 #include "Python.h"
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14 #include "structmember.h"
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15
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16
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17 typedef struct {
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18 PyObject *error_obj; /* CSV exception */
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19 PyObject *dialects; /* Dialect registry */
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20 long field_limit; /* max parsed field size */
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21 } _csvstate;
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22
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23 #define _csvstate(o) ((_csvstate *)PyModule_GetState(o))
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24
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25 static int
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26 _csv_clear(PyObject *m)
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27 {
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28 Py_CLEAR(_csvstate(m)->error_obj);
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29 Py_CLEAR(_csvstate(m)->dialects);
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30 return 0;
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31 }
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32
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33 static int
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34 _csv_traverse(PyObject *m, visitproc visit, void *arg)
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35 {
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36 Py_VISIT(_csvstate(m)->error_obj);
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37 Py_VISIT(_csvstate(m)->dialects);
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38 return 0;
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39 }
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40
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41 static void
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42 _csv_free(void *m)
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43 {
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44 _csv_clear((PyObject *)m);
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45 }
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46
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47 static struct PyModuleDef _csvmodule;
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48
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49 #define _csvstate_global ((_csvstate *)PyModule_GetState(PyState_FindModule(&_csvmodule)))
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50
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51 typedef enum {
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52 START_RECORD, START_FIELD, ESCAPED_CHAR, IN_FIELD,
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53 IN_QUOTED_FIELD, ESCAPE_IN_QUOTED_FIELD, QUOTE_IN_QUOTED_FIELD,
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54 EAT_CRNL,AFTER_ESCAPED_CRNL
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55 } ParserState;
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56
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57 typedef enum {
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58 QUOTE_MINIMAL, QUOTE_ALL, QUOTE_NONNUMERIC, QUOTE_NONE
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59 } QuoteStyle;
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60
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61 typedef struct {
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62 QuoteStyle style;
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63 char *name;
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64 } StyleDesc;
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65
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66 static StyleDesc quote_styles[] = {
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67 { QUOTE_MINIMAL, "QUOTE_MINIMAL" },
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68 { QUOTE_ALL, "QUOTE_ALL" },
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69 { QUOTE_NONNUMERIC, "QUOTE_NONNUMERIC" },
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70 { QUOTE_NONE, "QUOTE_NONE" },
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71 { 0 }
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72 };
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73
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74 typedef struct {
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75 PyObject_HEAD
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76
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77 int doublequote; /* is " represented by ""? */
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78 Py_UCS4 delimiter; /* field separator */
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79 Py_UCS4 quotechar; /* quote character */
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80 Py_UCS4 escapechar; /* escape character */
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81 int skipinitialspace; /* ignore spaces following delimiter? */
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82 PyObject *lineterminator; /* string to write between records */
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83 int quoting; /* style of quoting to write */
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84
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85 int strict; /* raise exception on bad CSV */
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86 } DialectObj;
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87
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88 static PyTypeObject Dialect_Type;
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89
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90 typedef struct {
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91 PyObject_HEAD
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92
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93 PyObject *input_iter; /* iterate over this for input lines */
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94
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95 DialectObj *dialect; /* parsing dialect */
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96
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97 PyObject *fields; /* field list for current record */
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98 ParserState state; /* current CSV parse state */
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99 Py_UCS4 *field; /* temporary buffer */
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100 Py_ssize_t field_size; /* size of allocated buffer */
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101 Py_ssize_t field_len; /* length of current field */
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102 int numeric_field; /* treat field as numeric */
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103 unsigned long line_num; /* Source-file line number */
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104 } ReaderObj;
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105
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106 static PyTypeObject Reader_Type;
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107
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108 #define ReaderObject_Check(v) (Py_TYPE(v) == &Reader_Type)
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109
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110 typedef struct {
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111 PyObject_HEAD
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112
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113 PyObject *writeline; /* write output lines to this file */
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114
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115 DialectObj *dialect; /* parsing dialect */
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116
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117 Py_UCS4 *rec; /* buffer for parser.join */
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118 Py_ssize_t rec_size; /* size of allocated record */
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119 Py_ssize_t rec_len; /* length of record */
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120 int num_fields; /* number of fields in record */
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121 } WriterObj;
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122
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123 static PyTypeObject Writer_Type;
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124
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125 /*
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126 * DIALECT class
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127 */
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128
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129 static PyObject *
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130 get_dialect_from_registry(PyObject * name_obj)
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131 {
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132 PyObject *dialect_obj;
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133
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134 dialect_obj = PyDict_GetItem(_csvstate_global->dialects, name_obj);
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135 if (dialect_obj == NULL) {
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136 if (!PyErr_Occurred())
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137 PyErr_Format(_csvstate_global->error_obj, "unknown dialect");
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138 }
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139 else
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140 Py_INCREF(dialect_obj);
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141 return dialect_obj;
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142 }
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143
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144 static PyObject *
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145 get_string(PyObject *str)
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146 {
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147 Py_XINCREF(str);
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148 return str;
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149 }
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150
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151 static PyObject *
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152 get_nullchar_as_None(Py_UCS4 c)
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153 {
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154 if (c == '\0') {
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155 Py_INCREF(Py_None);
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156 return Py_None;
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157 }
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158 else
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159 return PyUnicode_FromOrdinal(c);
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160 }
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161
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162 static PyObject *
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163 Dialect_get_lineterminator(DialectObj *self)
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164 {
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165 return get_string(self->lineterminator);
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166 }
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167
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168 static PyObject *
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169 Dialect_get_delimiter(DialectObj *self)
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170 {
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171 return get_nullchar_as_None(self->delimiter);
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172 }
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173
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174 static PyObject *
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175 Dialect_get_escapechar(DialectObj *self)
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176 {
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177 return get_nullchar_as_None(self->escapechar);
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178 }
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179
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180 static PyObject *
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181 Dialect_get_quotechar(DialectObj *self)
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182 {
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183 return get_nullchar_as_None(self->quotechar);
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184 }
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185
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186 static PyObject *
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187 Dialect_get_quoting(DialectObj *self)
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188 {
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189 return PyLong_FromLong(self->quoting);
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190 }
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191
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192 static int
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193 _set_bool(const char *name, int *target, PyObject *src, int dflt)
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194 {
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195 if (src == NULL)
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196 *target = dflt;
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197 else {
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198 int b = PyObject_IsTrue(src);
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199 if (b < 0)
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200 return -1;
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201 *target = b;
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202 }
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203 return 0;
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204 }
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205
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206 static int
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207 _set_int(const char *name, int *target, PyObject *src, int dflt)
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208 {
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209 if (src == NULL)
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210 *target = dflt;
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211 else {
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212 long value;
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213 if (!PyLong_CheckExact(src)) {
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214 PyErr_Format(PyExc_TypeError,
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215 "\"%s\" must be an integer", name);
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216 return -1;
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217 }
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218 value = PyLong_AsLong(src);
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219 if (value == -1 && PyErr_Occurred())
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220 return -1;
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221 #if SIZEOF_LONG > SIZEOF_INT
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222 if (value > INT_MAX || value < INT_MIN) {
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223 PyErr_Format(PyExc_ValueError,
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224 "integer out of range for \"%s\"", name);
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225 return -1;
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226 }
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227 #endif
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228 *target = (int)value;
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229 }
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230 return 0;
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231 }
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232
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233 static int
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234 _set_char(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
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235 {
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236 if (src == NULL)
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237 *target = dflt;
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238 else {
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239 *target = '\0';
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240 if (src != Py_None) {
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241 Py_ssize_t len;
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242 len = PyUnicode_GetLength(src);
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243 if (len > 1) {
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244 PyErr_Format(PyExc_TypeError,
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245 "\"%s\" must be an 1-character string",
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246 name);
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247 return -1;
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248 }
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249 /* PyUnicode_READY() is called in PyUnicode_GetLength() */
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250 if (len > 0)
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251 *target = PyUnicode_READ_CHAR(src, 0);
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252 }
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253 }
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254 return 0;
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255 }
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256
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257 static int
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258 _set_str(const char *name, PyObject **target, PyObject *src, const char *dflt)
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259 {
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260 if (src == NULL)
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261 *target = PyUnicode_DecodeASCII(dflt, strlen(dflt), NULL);
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262 else {
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263 if (src == Py_None)
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264 *target = NULL;
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265 else if (!PyUnicode_Check(src)) {
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266 PyErr_Format(PyExc_TypeError,
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267 "\"%s\" must be a string", name);
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268 return -1;
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269 }
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270 else {
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271 if (PyUnicode_READY(src) == -1)
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272 return -1;
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273 Py_XDECREF(*target);
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274 Py_INCREF(src);
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275 *target = src;
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276 }
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277 }
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278 return 0;
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279 }
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280
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281 static int
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282 dialect_check_quoting(int quoting)
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283 {
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284 StyleDesc *qs;
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285
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286 for (qs = quote_styles; qs->name; qs++) {
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287 if (qs->style == quoting)
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288 return 0;
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289 }
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290 PyErr_Format(PyExc_TypeError, "bad \"quoting\" value");
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291 return -1;
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292 }
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293
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294 #define D_OFF(x) offsetof(DialectObj, x)
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295
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296 static struct PyMemberDef Dialect_memberlist[] = {
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297 { "skipinitialspace", T_INT, D_OFF(skipinitialspace), READONLY },
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298 { "doublequote", T_INT, D_OFF(doublequote), READONLY },
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299 { "strict", T_INT, D_OFF(strict), READONLY },
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300 { NULL }
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301 };
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302
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303 static PyGetSetDef Dialect_getsetlist[] = {
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304 { "delimiter", (getter)Dialect_get_delimiter},
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305 { "escapechar", (getter)Dialect_get_escapechar},
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306 { "lineterminator", (getter)Dialect_get_lineterminator},
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307 { "quotechar", (getter)Dialect_get_quotechar},
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308 { "quoting", (getter)Dialect_get_quoting},
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309 {NULL},
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310 };
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311
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312 static void
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313 Dialect_dealloc(DialectObj *self)
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314 {
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315 Py_XDECREF(self->lineterminator);
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316 Py_TYPE(self)->tp_free((PyObject *)self);
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317 }
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318
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319 static char *dialect_kws[] = {
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320 "dialect",
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321 "delimiter",
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322 "doublequote",
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323 "escapechar",
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324 "lineterminator",
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325 "quotechar",
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326 "quoting",
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327 "skipinitialspace",
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328 "strict",
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329 NULL
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330 };
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331
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332 static PyObject *
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333 dialect_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
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334 {
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335 DialectObj *self;
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336 PyObject *ret = NULL;
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337 PyObject *dialect = NULL;
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338 PyObject *delimiter = NULL;
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339 PyObject *doublequote = NULL;
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340 PyObject *escapechar = NULL;
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341 PyObject *lineterminator = NULL;
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342 PyObject *quotechar = NULL;
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343 PyObject *quoting = NULL;
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344 PyObject *skipinitialspace = NULL;
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345 PyObject *strict = NULL;
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346
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347 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
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348 "|OOOOOOOOO", dialect_kws,
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349 &dialect,
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350 &delimiter,
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351 &doublequote,
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352 &escapechar,
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353 &lineterminator,
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354 &quotechar,
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355 &quoting,
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356 &skipinitialspace,
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357 &strict))
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358 return NULL;
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359
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360 if (dialect != NULL) {
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361 if (PyUnicode_Check(dialect)) {
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362 dialect = get_dialect_from_registry(dialect);
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363 if (dialect == NULL)
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364 return NULL;
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365 }
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366 else
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367 Py_INCREF(dialect);
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368 /* Can we reuse this instance? */
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369 if (PyObject_TypeCheck(dialect, &Dialect_Type) &&
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370 delimiter == 0 &&
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371 doublequote == 0 &&
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372 escapechar == 0 &&
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373 lineterminator == 0 &&
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374 quotechar == 0 &&
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375 quoting == 0 &&
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376 skipinitialspace == 0 &&
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377 strict == 0)
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378 return dialect;
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379 }
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380
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381 self = (DialectObj *)type->tp_alloc(type, 0);
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382 if (self == NULL) {
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383 Py_XDECREF(dialect);
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384 return NULL;
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385 }
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386 self->lineterminator = NULL;
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387
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388 Py_XINCREF(delimiter);
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389 Py_XINCREF(doublequote);
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390 Py_XINCREF(escapechar);
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391 Py_XINCREF(lineterminator);
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392 Py_XINCREF(quotechar);
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393 Py_XINCREF(quoting);
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394 Py_XINCREF(skipinitialspace);
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395 Py_XINCREF(strict);
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396 if (dialect != NULL) {
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397 #define DIALECT_GETATTR(v, n) \
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398 if (v == NULL) \
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399 v = PyObject_GetAttrString(dialect, n)
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400 DIALECT_GETATTR(delimiter, "delimiter");
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401 DIALECT_GETATTR(doublequote, "doublequote");
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402 DIALECT_GETATTR(escapechar, "escapechar");
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403 DIALECT_GETATTR(lineterminator, "lineterminator");
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404 DIALECT_GETATTR(quotechar, "quotechar");
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405 DIALECT_GETATTR(quoting, "quoting");
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406 DIALECT_GETATTR(skipinitialspace, "skipinitialspace");
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407 DIALECT_GETATTR(strict, "strict");
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408 PyErr_Clear();
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409 }
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Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
410
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411 /* check types and convert to C values */
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diff changeset
412 #define DIASET(meth, name, target, src, dflt) \
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413 if (meth(name, target, src, dflt)) \
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414 goto err
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415 DIASET(_set_char, "delimiter", &self->delimiter, delimiter, ',');
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416 DIASET(_set_bool, "doublequote", &self->doublequote, doublequote, 1);
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417 DIASET(_set_char, "escapechar", &self->escapechar, escapechar, 0);
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418 DIASET(_set_str, "lineterminator", &self->lineterminator, lineterminator, "\r\n");
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419 DIASET(_set_char, "quotechar", &self->quotechar, quotechar, '"');
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420 DIASET(_set_int, "quoting", &self->quoting, quoting, QUOTE_MINIMAL);
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421 DIASET(_set_bool, "skipinitialspace", &self->skipinitialspace, skipinitialspace, 0);
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422 DIASET(_set_bool, "strict", &self->strict, strict, 0);
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423
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424 /* validate options */
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425 if (dialect_check_quoting(self->quoting))
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426 goto err;
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427 if (self->delimiter == 0) {
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428 PyErr_SetString(PyExc_TypeError, "delimiter must be set");
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429 goto err;
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430 }
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431 if (quotechar == Py_None && quoting == NULL)
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432 self->quoting = QUOTE_NONE;
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433 if (self->quoting != QUOTE_NONE && self->quotechar == 0) {
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434 PyErr_SetString(PyExc_TypeError,
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435 "quotechar must be set if quoting enabled");
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436 goto err;
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437 }
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438 if (self->lineterminator == 0) {
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439 PyErr_SetString(PyExc_TypeError, "lineterminator must be set");
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440 goto err;
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441 }
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442
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443 ret = (PyObject *)self;
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444 Py_INCREF(self);
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445 err:
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446 Py_XDECREF(self);
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447 Py_XDECREF(dialect);
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448 Py_XDECREF(delimiter);
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449 Py_XDECREF(doublequote);
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450 Py_XDECREF(escapechar);
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451 Py_XDECREF(lineterminator);
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452 Py_XDECREF(quotechar);
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453 Py_XDECREF(quoting);
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454 Py_XDECREF(skipinitialspace);
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455 Py_XDECREF(strict);
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456 return ret;
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457 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
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458
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459
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460 PyDoc_STRVAR(Dialect_Type_doc,
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461 "CSV dialect\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
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462 "\n"
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463 "The Dialect type records CSV parsing and generation options.\n");
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464
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465 static PyTypeObject Dialect_Type = {
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466 PyVarObject_HEAD_INIT(NULL, 0)
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467 "_csv.Dialect", /* tp_name */
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468 sizeof(DialectObj), /* tp_basicsize */
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469 0, /* tp_itemsize */
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470 /* methods */
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471 (destructor)Dialect_dealloc, /* tp_dealloc */
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472 (printfunc)0, /* tp_print */
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473 (getattrfunc)0, /* tp_getattr */
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474 (setattrfunc)0, /* tp_setattr */
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475 0, /* tp_reserved */
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476 (reprfunc)0, /* tp_repr */
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477 0, /* tp_as_number */
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478 0, /* tp_as_sequence */
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479 0, /* tp_as_mapping */
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480 (hashfunc)0, /* tp_hash */
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481 (ternaryfunc)0, /* tp_call */
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482 (reprfunc)0, /* tp_str */
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483 0, /* tp_getattro */
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484 0, /* tp_setattro */
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485 0, /* tp_as_buffer */
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486 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
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487 Dialect_Type_doc, /* tp_doc */
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488 0, /* tp_traverse */
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489 0, /* tp_clear */
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490 0, /* tp_richcompare */
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491 0, /* tp_weaklistoffset */
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492 0, /* tp_iter */
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493 0, /* tp_iternext */
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494 0, /* tp_methods */
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495 Dialect_memberlist, /* tp_members */
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496 Dialect_getsetlist, /* tp_getset */
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497 0, /* tp_base */
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498 0, /* tp_dict */
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499 0, /* tp_descr_get */
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500 0, /* tp_descr_set */
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501 0, /* tp_dictoffset */
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502 0, /* tp_init */
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503 0, /* tp_alloc */
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504 dialect_new, /* tp_new */
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505 0, /* tp_free */
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506 };
cc35ed2b26a8 new CSV file processing module - see PEP 305
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507
34390
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Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
508 /*
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509 * Return an instance of the dialect type, given a Python instance or kwarg
28f84938468d Factor out the code for making a dialect instance.
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diff changeset
510 * description of the dialect
28f84938468d Factor out the code for making a dialect instance.
Andrew McNamara <andrewm@object-craft.com.au>
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511 */
28f84938468d Factor out the code for making a dialect instance.
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
512 static PyObject *
28f84938468d Factor out the code for making a dialect instance.
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
513 _call_dialect(PyObject *dialect_inst, PyObject *kwargs)
28f84938468d Factor out the code for making a dialect instance.
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
514 {
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515 PyObject *ctor_args;
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516 PyObject *dialect;
34390
28f84938468d Factor out the code for making a dialect instance.
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
517
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518 ctor_args = Py_BuildValue(dialect_inst ? "(O)" : "()", dialect_inst);
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519 if (ctor_args == NULL)
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520 return NULL;
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521 dialect = PyObject_Call((PyObject *)&Dialect_Type, ctor_args, kwargs);
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522 Py_DECREF(ctor_args);
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523 return dialect;
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diff changeset
524 }
28f84938468d Factor out the code for making a dialect instance.
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diff changeset
525
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
526 /*
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
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diff changeset
527 * READER
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
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528 */
34409
1d866c02a8ca When quoting=QUOTE_NONNUMERIC, the reader now casts unquoted fields
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34408
diff changeset
529 static int
28339
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Skip Montanaro <skip@pobox.com>
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diff changeset
530 parse_save_field(ReaderObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
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diff changeset
531 {
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532 PyObject *field;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
533
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
534 field = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND,
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
535 (void *) self->field, self->field_len);
61466
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536 if (field == NULL)
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diff changeset
537 return -1;
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diff changeset
538 self->field_len = 0;
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parents: 51271
diff changeset
539 if (self->numeric_field) {
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parents: 51271
diff changeset
540 PyObject *tmp;
34409
1d866c02a8ca When quoting=QUOTE_NONNUMERIC, the reader now casts unquoted fields
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34408
diff changeset
541
61466
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542 self->numeric_field = 0;
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parents: 51271
diff changeset
543 tmp = PyNumber_Float(field);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
544 Py_DECREF(field);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
545 if (tmp == NULL)
61466
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diff changeset
546 return -1;
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parents: 51271
diff changeset
547 field = tmp;
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parents: 51271
diff changeset
548 }
87104
c9efe992e9b2 Issue #19437: Fix parse_save_field() of the csv module, handle PyList_Append()
Victor Stinner <victor.stinner@gmail.com>
parents: 82821
diff changeset
549 if (PyList_Append(self->fields, field) < 0) {
c9efe992e9b2 Issue #19437: Fix parse_save_field() of the csv module, handle PyList_Append()
Victor Stinner <victor.stinner@gmail.com>
parents: 82821
diff changeset
550 Py_DECREF(field);
c9efe992e9b2 Issue #19437: Fix parse_save_field() of the csv module, handle PyList_Append()
Victor Stinner <victor.stinner@gmail.com>
parents: 82821
diff changeset
551 return -1;
c9efe992e9b2 Issue #19437: Fix parse_save_field() of the csv module, handle PyList_Append()
Victor Stinner <victor.stinner@gmail.com>
parents: 82821
diff changeset
552 }
61466
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diff changeset
553 Py_DECREF(field);
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parents: 51271
diff changeset
554 return 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
555 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
556
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
557 static int
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
558 parse_grow_buff(ReaderObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
559 {
61466
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parents: 51271
diff changeset
560 if (self->field_size == 0) {
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561 self->field_size = 4096;
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562 if (self->field != NULL)
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diff changeset
563 PyMem_Free(self->field);
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
564 self->field = PyMem_New(Py_UCS4, self->field_size);
61466
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diff changeset
565 }
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diff changeset
566 else {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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parents: 72767
diff changeset
567 Py_UCS4 *field = self->field;
64048
6e8f5878849c Fix more 64-bit warnings.
Antoine Pitrou <solipsis@pitrou.net>
parents: 61466
diff changeset
568 if (self->field_size > PY_SSIZE_T_MAX / 2) {
61466
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parents: 51271
diff changeset
569 PyErr_NoMemory();
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parents: 51271
diff changeset
570 return 0;
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parents: 51271
diff changeset
571 }
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diff changeset
572 self->field_size *= 2;
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
573 self->field = PyMem_Resize(field, Py_UCS4, self->field_size);
61466
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574 }
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575 if (self->field == NULL) {
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diff changeset
576 PyErr_NoMemory();
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diff changeset
577 return 0;
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diff changeset
578 }
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diff changeset
579 return 1;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
580 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
581
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
582 static int
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
583 parse_add_char(ReaderObj *self, Py_UCS4 c)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
584 {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
585 if (self->field_len >= _csvstate_global->field_limit) {
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
586 PyErr_Format(_csvstate_global->error_obj, "field larger than field limit (%ld)",
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
587 _csvstate_global->field_limit);
61466
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diff changeset
588 return -1;
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parents: 51271
diff changeset
589 }
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diff changeset
590 if (self->field_len == self->field_size && !parse_grow_buff(self))
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
591 return -1;
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parents: 51271
diff changeset
592 self->field[self->field_len++] = c;
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diff changeset
593 return 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
594 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
595
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
596 static int
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
597 parse_process_char(ReaderObj *self, Py_UCS4 c)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
598 {
61466
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diff changeset
599 DialectObj *dialect = self->dialect;
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
600
61466
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diff changeset
601 switch (self->state) {
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parents: 51271
diff changeset
602 case START_RECORD:
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diff changeset
603 /* start of record */
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parents: 51271
diff changeset
604 if (c == '\0')
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parents: 51271
diff changeset
605 /* empty line - return [] */
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diff changeset
606 break;
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parents: 51271
diff changeset
607 else if (c == '\n' || c == '\r') {
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parents: 51271
diff changeset
608 self->state = EAT_CRNL;
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diff changeset
609 break;
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610 }
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parents: 51271
diff changeset
611 /* normal character - handle as START_FIELD */
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diff changeset
612 self->state = START_FIELD;
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parents: 51271
diff changeset
613 /* fallthru */
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diff changeset
614 case START_FIELD:
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diff changeset
615 /* expecting field */
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diff changeset
616 if (c == '\n' || c == '\r' || c == '\0') {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
617 /* save empty field - return [fields] */
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618 if (parse_save_field(self) < 0)
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diff changeset
619 return -1;
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diff changeset
620 self->state = (c == '\0' ? START_RECORD : EAT_CRNL);
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diff changeset
621 }
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diff changeset
622 else if (c == dialect->quotechar &&
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diff changeset
623 dialect->quoting != QUOTE_NONE) {
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parents: 51271
diff changeset
624 /* start quoted field */
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diff changeset
625 self->state = IN_QUOTED_FIELD;
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diff changeset
626 }
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diff changeset
627 else if (c == dialect->escapechar) {
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parents: 51271
diff changeset
628 /* possible escaped character */
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parents: 51271
diff changeset
629 self->state = ESCAPED_CHAR;
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diff changeset
630 }
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diff changeset
631 else if (c == ' ' && dialect->skipinitialspace)
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parents: 51271
diff changeset
632 /* ignore space at start of field */
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diff changeset
633 ;
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634 else if (c == dialect->delimiter) {
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parents: 51271
diff changeset
635 /* save empty field */
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parents: 51271
diff changeset
636 if (parse_save_field(self) < 0)
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diff changeset
637 return -1;
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diff changeset
638 }
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diff changeset
639 else {
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parents: 51271
diff changeset
640 /* begin new unquoted field */
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diff changeset
641 if (dialect->quoting == QUOTE_NONNUMERIC)
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642 self->numeric_field = 1;
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diff changeset
643 if (parse_add_char(self, c) < 0)
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644 return -1;
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645 self->state = IN_FIELD;
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646 }
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647 break;
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diff changeset
648
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diff changeset
649 case ESCAPED_CHAR:
82821
ced9602a3710 Use logic operator, not bitwise operator, for conditional.
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parents: 82815
diff changeset
650 if (c == '\n' || c=='\r') {
82815
940748853712 #15927: Fix cvs.reader parsing of escaped \r\n with quoting off.
R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
651 if (parse_add_char(self, c) < 0)
940748853712 #15927: Fix cvs.reader parsing of escaped \r\n with quoting off.
R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
652 return -1;
940748853712 #15927: Fix cvs.reader parsing of escaped \r\n with quoting off.
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parents: 80180
diff changeset
653 self->state = AFTER_ESCAPED_CRNL;
940748853712 #15927: Fix cvs.reader parsing of escaped \r\n with quoting off.
R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
654 break;
940748853712 #15927: Fix cvs.reader parsing of escaped \r\n with quoting off.
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parents: 80180
diff changeset
655 }
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656 if (c == '\0')
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657 c = '\n';
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658 if (parse_add_char(self, c) < 0)
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659 return -1;
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660 self->state = IN_FIELD;
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661 break;
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diff changeset
662
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parents: 80180
diff changeset
663 case AFTER_ESCAPED_CRNL:
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R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
664 if (c == '\0')
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R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
665 break;
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R David Murray <rdmurray@bitdance.com>
parents: 80180
diff changeset
666 /*fallthru*/
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parents: 80180
diff changeset
667
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
668 case IN_FIELD:
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
669 /* in unquoted field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
670 if (c == '\n' || c == '\r' || c == '\0') {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
671 /* end of line - return [fields] */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
672 if (parse_save_field(self) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
673 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
674 self->state = (c == '\0' ? START_RECORD : EAT_CRNL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
675 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
676 else if (c == dialect->escapechar) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
677 /* possible escaped character */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
678 self->state = ESCAPED_CHAR;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
679 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
680 else if (c == dialect->delimiter) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
681 /* save field - wait for new field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
682 if (parse_save_field(self) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
683 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
684 self->state = START_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
685 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
686 else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
687 /* normal character - save in field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
688 if (parse_add_char(self, c) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
689 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
690 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
691 break;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
692
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
693 case IN_QUOTED_FIELD:
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
694 /* in quoted field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
695 if (c == '\0')
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
696 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
697 else if (c == dialect->escapechar) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
698 /* Possible escape character */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
699 self->state = ESCAPE_IN_QUOTED_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
700 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
701 else if (c == dialect->quotechar &&
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
702 dialect->quoting != QUOTE_NONE) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
703 if (dialect->doublequote) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
704 /* doublequote; " represented by "" */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
705 self->state = QUOTE_IN_QUOTED_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
706 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
707 else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
708 /* end of quote part of field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
709 self->state = IN_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
710 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
711 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
712 else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
713 /* normal character - save in field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
714 if (parse_add_char(self, c) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
715 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
716 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
717 break;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
718
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
719 case ESCAPE_IN_QUOTED_FIELD:
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
720 if (c == '\0')
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
721 c = '\n';
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
722 if (parse_add_char(self, c) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
723 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
724 self->state = IN_QUOTED_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
725 break;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
726
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
727 case QUOTE_IN_QUOTED_FIELD:
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
728 /* doublequote - seen a quote in an quoted field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
729 if (dialect->quoting != QUOTE_NONE &&
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
730 c == dialect->quotechar) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
731 /* save "" as " */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
732 if (parse_add_char(self, c) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
733 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
734 self->state = IN_QUOTED_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
735 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
736 else if (c == dialect->delimiter) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
737 /* save field - wait for new field */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
738 if (parse_save_field(self) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
739 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
740 self->state = START_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
741 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
742 else if (c == '\n' || c == '\r' || c == '\0') {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
743 /* end of line - return [fields] */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
744 if (parse_save_field(self) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
745 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
746 self->state = (c == '\0' ? START_RECORD : EAT_CRNL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
747 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
748 else if (!dialect->strict) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
749 if (parse_add_char(self, c) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
750 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
751 self->state = IN_FIELD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
752 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
753 else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
754 /* illegal */
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
755 PyErr_Format(_csvstate_global->error_obj, "'%c' expected after '%c'",
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
756 dialect->delimiter,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
757 dialect->quotechar);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
758 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
759 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
760 break;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
761
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
762 case EAT_CRNL:
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
763 if (c == '\n' || c == '\r')
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
764 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
765 else if (c == '\0')
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
766 self->state = START_RECORD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
767 else {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
768 PyErr_Format(_csvstate_global->error_obj, "new-line character seen in unquoted field - do you need to open the file in universal-newline mode?");
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
769 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
770 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
771 break;
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
772
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
773 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
774 return 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
775 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
776
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
777 static int
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
778 parse_reset(ReaderObj *self)
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
779 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
780 Py_XDECREF(self->fields);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
781 self->fields = PyList_New(0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
782 if (self->fields == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
783 return -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
784 self->field_len = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
785 self->state = START_RECORD;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
786 self->numeric_field = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
787 return 0;
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
788 }
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
789
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
790 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
791 Reader_iternext(ReaderObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
792 {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
793 PyObject *fields = NULL;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
794 Py_UCS4 c;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
795 Py_ssize_t pos, linelen;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
796 unsigned int kind;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
797 void *data;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
798 PyObject *lineobj;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
799
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
800 if (parse_reset(self) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
801 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
802 do {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
803 lineobj = PyIter_Next(self->input_iter);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
804 if (lineobj == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
805 /* End of input OR exception */
79156
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
806 if (!PyErr_Occurred() && (self->field_len != 0 ||
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
807 self->state == IN_QUOTED_FIELD)) {
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
808 if (self->dialect->strict)
79157
25f0756deeae merge 3.2: Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78605 79156
diff changeset
809 PyErr_SetString(_csvstate_global->error_obj,
25f0756deeae merge 3.2: Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78605 79156
diff changeset
810 "unexpected end of data");
79156
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
811 else if (parse_save_field(self) >= 0)
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
812 break;
e9c005676d6e Issue #16013: Fix CSV Reader parsing issue with ending quote characters. Patch by Serhiy Storchaka.
Senthil Kumaran <senthil@uthcode.com>
parents: 78604
diff changeset
813 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
814 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
815 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
816 if (!PyUnicode_Check(lineobj)) {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
817 PyErr_Format(_csvstate_global->error_obj,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
818 "iterator should return strings, "
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
819 "not %.200s "
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
820 "(did you open the file in text mode?)",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
821 lineobj->ob_type->tp_name
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
822 );
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
823 Py_DECREF(lineobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
824 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
825 }
80180
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
826 if (PyUnicode_READY(lineobj) == -1) {
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
827 Py_DECREF(lineobj);
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
828 return NULL;
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
829 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
830 ++self->line_num;
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
831 kind = PyUnicode_KIND(lineobj);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
832 data = PyUnicode_DATA(lineobj);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
833 pos = 0;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
834 linelen = PyUnicode_GET_LENGTH(lineobj);
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
835 while (linelen--) {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
836 c = PyUnicode_READ(kind, data, pos);
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
837 if (c == '\0') {
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
838 Py_DECREF(lineobj);
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
839 PyErr_Format(_csvstate_global->error_obj,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
840 "line contains NULL byte");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
841 goto err;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
842 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
843 if (parse_process_char(self, c) < 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
844 Py_DECREF(lineobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
845 goto err;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
846 }
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
847 pos++;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
848 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
849 Py_DECREF(lineobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
850 if (parse_process_char(self, 0) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
851 goto err;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
852 } while (self->state != START_RECORD);
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
853
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
854 fields = self->fields;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
855 self->fields = NULL;
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
856 err:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
857 return fields;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
858 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
859
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
860 static void
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
861 Reader_dealloc(ReaderObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
862 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
863 PyObject_GC_UnTrack(self);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
864 Py_XDECREF(self->dialect);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
865 Py_XDECREF(self->input_iter);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
866 Py_XDECREF(self->fields);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
867 if (self->field != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
868 PyMem_Free(self->field);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
869 PyObject_GC_Del(self);
28599
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
870 }
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
871
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
872 static int
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
873 Reader_traverse(ReaderObj *self, visitproc visit, void *arg)
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
874 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
875 Py_VISIT(self->dialect);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
876 Py_VISIT(self->input_iter);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
877 Py_VISIT(self->fields);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
878 return 0;
28599
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
879 }
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
880
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
881 static int
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
882 Reader_clear(ReaderObj *self)
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
883 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
884 Py_CLEAR(self->dialect);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
885 Py_CLEAR(self->input_iter);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
886 Py_CLEAR(self->fields);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
887 return 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
888 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
889
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
890 PyDoc_STRVAR(Reader_Type_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
891 "CSV reader\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
892 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
893 "Reader objects are responsible for reading and parsing tabular data\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
894 "in CSV format.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
895 );
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
896
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
897 static struct PyMethodDef Reader_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
898 { NULL, NULL }
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
899 };
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
900 #define R_OFF(x) offsetof(ReaderObj, x)
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
901
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
902 static struct PyMemberDef Reader_memberlist[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
903 { "dialect", T_OBJECT, R_OFF(dialect), READONLY },
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
904 { "line_num", T_ULONG, R_OFF(line_num), READONLY },
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
905 { NULL }
34418
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
906 };
fa65e3425a4c Moved reader \r and \n processing from the iterator to the state machine -
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34411
diff changeset
907
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
908
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
909 static PyTypeObject Reader_Type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
910 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
911 "_csv.reader", /*tp_name*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
912 sizeof(ReaderObj), /*tp_basicsize*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
913 0, /*tp_itemsize*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
914 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
915 (destructor)Reader_dealloc, /*tp_dealloc*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
916 (printfunc)0, /*tp_print*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
917 (getattrfunc)0, /*tp_getattr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
918 (setattrfunc)0, /*tp_setattr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
919 0, /*tp_reserved*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
920 (reprfunc)0, /*tp_repr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
921 0, /*tp_as_number*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
922 0, /*tp_as_sequence*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
923 0, /*tp_as_mapping*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
924 (hashfunc)0, /*tp_hash*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
925 (ternaryfunc)0, /*tp_call*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
926 (reprfunc)0, /*tp_str*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
927 0, /*tp_getattro*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
928 0, /*tp_setattro*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
929 0, /*tp_as_buffer*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
930 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
931 Py_TPFLAGS_HAVE_GC, /*tp_flags*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
932 Reader_Type_doc, /*tp_doc*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
933 (traverseproc)Reader_traverse, /*tp_traverse*/
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934 (inquiry)Reader_clear, /*tp_clear*/
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935 0, /*tp_richcompare*/
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936 0, /*tp_weaklistoffset*/
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937 PyObject_SelfIter, /*tp_iter*/
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938 (getiterfunc)Reader_iternext, /*tp_iternext*/
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939 Reader_methods, /*tp_methods*/
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940 Reader_memberlist, /*tp_members*/
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941 0, /*tp_getset*/
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942
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943 };
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Skip Montanaro <skip@pobox.com>
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944
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
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945 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
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946 csv_reader(PyObject *module, PyObject *args, PyObject *keyword_args)
cc35ed2b26a8 new CSV file processing module - see PEP 305
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parents:
diff changeset
947 {
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948 PyObject * iterator, * dialect = NULL;
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949 ReaderObj * self = PyObject_GC_New(ReaderObj, &Reader_Type);
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950
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951 if (!self)
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952 return NULL;
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953
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954 self->dialect = NULL;
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955 self->fields = NULL;
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956 self->input_iter = NULL;
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957 self->field = NULL;
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958 self->field_size = 0;
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959 self->line_num = 0;
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960
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961 if (parse_reset(self) < 0) {
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962 Py_DECREF(self);
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963 return NULL;
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964 }
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965
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966 if (!PyArg_UnpackTuple(args, "", 1, 2, &iterator, &dialect)) {
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967 Py_DECREF(self);
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968 return NULL;
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969 }
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970 self->input_iter = PyObject_GetIter(iterator);
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971 if (self->input_iter == NULL) {
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972 PyErr_SetString(PyExc_TypeError,
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973 "argument 1 must be an iterator");
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974 Py_DECREF(self);
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975 return NULL;
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976 }
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977 self->dialect = (DialectObj *)_call_dialect(dialect, keyword_args);
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978 if (self->dialect == NULL) {
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979 Py_DECREF(self);
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980 return NULL;
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981 }
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982
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983 PyObject_GC_Track(self);
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984 return (PyObject *)self;
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985 }
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986
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987 /*
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988 * WRITER
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989 */
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990 /* ---------------------------------------------------------------- */
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991 static void
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992 join_reset(WriterObj *self)
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993 {
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994 self->rec_len = 0;
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995 self->num_fields = 0;
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996 }
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997
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998 #define MEM_INCR 32768
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999
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1000 /* Calculate new record length or append field to record. Return new
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1001 * record length.
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1002 */
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1003 static Py_ssize_t
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1004 join_append_data(WriterObj *self, unsigned int field_kind, void *field_data,
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1005 Py_ssize_t field_len, int quote_empty, int *quoted,
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1006 int copy_phase)
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1007 {
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1008 DialectObj *dialect = self->dialect;
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1009 int i;
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1010 Py_ssize_t rec_len;
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1011
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1012 #define ADDCH(c) \
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1013 do {\
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1014 if (copy_phase) \
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1015 self->rec[rec_len] = c;\
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1016 rec_len++;\
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1017 } while(0)
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1018
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1019 rec_len = self->rec_len;
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1020
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1021 /* If this is not the first field we need a field separator */
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1022 if (self->num_fields > 0)
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1023 ADDCH(dialect->delimiter);
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1024
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1025 /* Handle preceding quote */
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1026 if (copy_phase && *quoted)
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1027 ADDCH(dialect->quotechar);
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1028
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1029 /* Copy/count field data */
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1030 /* If field is null just pass over */
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1031 for (i = 0; field_data && (i < field_len); i++) {
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1032 Py_UCS4 c = PyUnicode_READ(field_kind, field_data, i);
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1033 int want_escape = 0;
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1034
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1035 if (c == dialect->delimiter ||
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1036 c == dialect->escapechar ||
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1037 c == dialect->quotechar ||
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1038 PyUnicode_FindChar(
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1039 dialect->lineterminator, c, 0,
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1040 PyUnicode_GET_LENGTH(dialect->lineterminator), 1) >= 0) {
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1041 if (dialect->quoting == QUOTE_NONE)
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1042 want_escape = 1;
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1043 else {
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1044 if (c == dialect->quotechar) {
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1045 if (dialect->doublequote)
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1046 ADDCH(dialect->quotechar);
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1047 else
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1048 want_escape = 1;
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1049 }
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1050 if (!want_escape)
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1051 *quoted = 1;
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1052 }
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1053 if (want_escape) {
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1054 if (!dialect->escapechar) {
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1055 PyErr_Format(_csvstate_global->error_obj,
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1056 "need to escape, but no escapechar set");
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1057 return -1;
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1058 }
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1059 ADDCH(dialect->escapechar);
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1060 }
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1061 }
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1062 /* Copy field character into record buffer.
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1063 */
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1064 ADDCH(c);
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1065 }
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1066
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1067 /* If field is empty check if it needs to be quoted.
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1068 */
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1069 if (i == 0 && quote_empty) {
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diff changeset
1070 if (dialect->quoting == QUOTE_NONE) {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1071 PyErr_Format(_csvstate_global->error_obj,
61466
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diff changeset
1072 "single empty field record must be quoted");
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diff changeset
1073 return -1;
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diff changeset
1074 }
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diff changeset
1075 else
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diff changeset
1076 *quoted = 1;
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diff changeset
1077 }
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Skip Montanaro <skip@pobox.com>
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diff changeset
1078
61466
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diff changeset
1079 if (*quoted) {
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diff changeset
1080 if (copy_phase)
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diff changeset
1081 ADDCH(dialect->quotechar);
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diff changeset
1082 else
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diff changeset
1083 rec_len += 2;
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diff changeset
1084 }
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diff changeset
1085 return rec_len;
34407
c88ab292bf05 When using QUOTE_NONNUMERIC, we now test for "numericness" with
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34406
diff changeset
1086 #undef ADDCH
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1087 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1088
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1089 static int
64048
6e8f5878849c Fix more 64-bit warnings.
Antoine Pitrou <solipsis@pitrou.net>
parents: 61466
diff changeset
1090 join_check_rec_size(WriterObj *self, Py_ssize_t rec_len)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1091 {
48330
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Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 47580
diff changeset
1092
64048
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1093 if (rec_len < 0 || rec_len > PY_SSIZE_T_MAX - MEM_INCR) {
61466
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diff changeset
1094 PyErr_NoMemory();
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diff changeset
1095 return 0;
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diff changeset
1096 }
48330
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diff changeset
1097
61466
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diff changeset
1098 if (rec_len > self->rec_size) {
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diff changeset
1099 if (self->rec_size == 0) {
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diff changeset
1100 self->rec_size = (rec_len / MEM_INCR + 1) * MEM_INCR;
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1101 if (self->rec != NULL)
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diff changeset
1102 PyMem_Free(self->rec);
72782
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diff changeset
1103 self->rec = PyMem_New(Py_UCS4, self->rec_size);
61466
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1104 }
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1105 else {
72782
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parents: 72767
diff changeset
1106 Py_UCS4* old_rec = self->rec;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1107
61466
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diff changeset
1108 self->rec_size = (rec_len / MEM_INCR + 1) * MEM_INCR;
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1109 self->rec = PyMem_Resize(old_rec, Py_UCS4, self->rec_size);
61466
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diff changeset
1110 if (self->rec == NULL)
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diff changeset
1111 PyMem_Free(old_rec);
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diff changeset
1112 }
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1113 if (self->rec == NULL) {
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1114 PyErr_NoMemory();
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diff changeset
1115 return 0;
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diff changeset
1116 }
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1117 }
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1118 return 1;
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Skip Montanaro <skip@pobox.com>
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diff changeset
1119 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1120
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1121 static int
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1122 join_append(WriterObj *self, PyObject *field, int *quoted, int quote_empty)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1123 {
72782
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diff changeset
1124 unsigned int field_kind = -1;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1125 void *field_data = NULL;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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parents: 72767
diff changeset
1126 Py_ssize_t field_len = 0;
64048
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61466
diff changeset
1127 Py_ssize_t rec_len;
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1128
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1129 if (field != NULL) {
80180
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1130 if (PyUnicode_READY(field) == -1)
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1131 return 0;
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1132 field_kind = PyUnicode_KIND(field);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1133 field_data = PyUnicode_DATA(field);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1134 field_len = PyUnicode_GET_LENGTH(field);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1135 }
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1136 rec_len = join_append_data(self, field_kind, field_data, field_len,
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1137 quote_empty, quoted, 0);
61466
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diff changeset
1138 if (rec_len < 0)
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diff changeset
1139 return 0;
28339
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parents:
diff changeset
1140
61466
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diff changeset
1141 /* grow record buffer if necessary */
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diff changeset
1142 if (!join_check_rec_size(self, rec_len))
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diff changeset
1143 return 0;
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1144
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1145 self->rec_len = join_append_data(self, field_kind, field_data, field_len,
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1146 quote_empty, quoted, 1);
61466
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diff changeset
1147 self->num_fields++;
28339
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parents:
diff changeset
1148
61466
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diff changeset
1149 return 1;
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1150 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1151
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1152 static int
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1153 join_append_lineterminator(WriterObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1154 {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1155 Py_ssize_t terminator_len, i;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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parents: 72767
diff changeset
1156 unsigned int term_kind;
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1157 void *term_data;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1158
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1159 terminator_len = PyUnicode_GET_LENGTH(self->dialect->lineterminator);
61466
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diff changeset
1160 if (terminator_len == -1)
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diff changeset
1161 return 0;
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1162
61466
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diff changeset
1163 /* grow record buffer if necessary */
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diff changeset
1164 if (!join_check_rec_size(self, self->rec_len + terminator_len))
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diff changeset
1165 return 0;
28339
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parents:
diff changeset
1166
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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diff changeset
1167 term_kind = PyUnicode_KIND(self->dialect->lineterminator);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1168 term_data = PyUnicode_DATA(self->dialect->lineterminator);
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1169 for (i = 0; i < terminator_len; i++)
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1170 self->rec[self->rec_len + i] = PyUnicode_READ(term_kind, term_data, i);
61466
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diff changeset
1171 self->rec_len += terminator_len;
28339
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parents:
diff changeset
1172
61466
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1173 return 1;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1174 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1175
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1176 PyDoc_STRVAR(csv_writerow_doc,
28590
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Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1177 "writerow(sequence)\n"
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1178 "\n"
28590
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1179 "Construct and write a CSV record from a sequence of fields. Non-string\n"
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1180 "elements will be converted to string.");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1181
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1182 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1183 csv_writerow(WriterObj *self, PyObject *seq)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1184 {
61466
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diff changeset
1185 DialectObj *dialect = self->dialect;
64048
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Antoine Pitrou <solipsis@pitrou.net>
parents: 61466
diff changeset
1186 Py_ssize_t len, i;
72783
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1187 PyObject *line, *result;
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1188
61466
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diff changeset
1189 if (!PySequence_Check(seq))
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1190 return PyErr_Format(_csvstate_global->error_obj, "sequence expected");
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1191
61466
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diff changeset
1192 len = PySequence_Length(seq);
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1193 if (len < 0)
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1194 return NULL;
28339
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parents:
diff changeset
1195
61466
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diff changeset
1196 /* Join all fields in internal buffer.
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diff changeset
1197 */
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diff changeset
1198 join_reset(self);
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diff changeset
1199 for (i = 0; i < len; i++) {
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diff changeset
1200 PyObject *field;
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diff changeset
1201 int append_ok;
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diff changeset
1202 int quoted;
28339
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parents:
diff changeset
1203
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diff changeset
1204 field = PySequence_GetItem(seq, i);
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diff changeset
1205 if (field == NULL)
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1206 return NULL;
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1207
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diff changeset
1208 switch (dialect->quoting) {
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diff changeset
1209 case QUOTE_NONNUMERIC:
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diff changeset
1210 quoted = !PyNumber_Check(field);
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diff changeset
1211 break;
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diff changeset
1212 case QUOTE_ALL:
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diff changeset
1213 quoted = 1;
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parents: 51271
diff changeset
1214 break;
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diff changeset
1215 default:
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diff changeset
1216 quoted = 0;
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diff changeset
1217 break;
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diff changeset
1218 }
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1219
61466
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diff changeset
1220 if (PyUnicode_Check(field)) {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1221 append_ok = join_append(self, field, &quoted, len == 1);
61466
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diff changeset
1222 Py_DECREF(field);
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diff changeset
1223 }
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parents: 51271
diff changeset
1224 else if (field == Py_None) {
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
Antoine Pitrou <solipsis@pitrou.net>
parents: 72767
diff changeset
1225 append_ok = join_append(self, NULL, &quoted, len == 1);
61466
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diff changeset
1226 Py_DECREF(field);
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diff changeset
1227 }
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diff changeset
1228 else {
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diff changeset
1229 PyObject *str;
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1230
61466
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diff changeset
1231 str = PyObject_Str(field);
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diff changeset
1232 Py_DECREF(field);
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parents: 51271
diff changeset
1233 if (str == NULL)
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diff changeset
1234 return NULL;
72782
f2adbb1065eb Migrate the _csv module to the new unicode APIs
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parents: 72767
diff changeset
1235 append_ok = join_append(self, str, &quoted, len == 1);
61466
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diff changeset
1236 Py_DECREF(str);
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parents: 51271
diff changeset
1237 }
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parents: 51271
diff changeset
1238 if (!append_ok)
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diff changeset
1239 return NULL;
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diff changeset
1240 }
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1241
61466
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diff changeset
1242 /* Add line terminator.
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diff changeset
1243 */
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diff changeset
1244 if (!join_append_lineterminator(self))
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diff changeset
1245 return 0;
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1246
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27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1247 line = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND,
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1248 (void *) self->rec, self->rec_len);
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1249 if (line == NULL)
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1250 return NULL;
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1251 result = PyObject_CallFunctionObjArgs(self->writeline, line, NULL);
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1252 Py_DECREF(line);
27f6fd87375f Fix a Py_UCS4 / Py_UNICODE mixup.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72782
diff changeset
1253 return result;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1254 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1255
28590
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1256 PyDoc_STRVAR(csv_writerows_doc,
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1257 "writerows(sequence of sequences)\n"
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1258 "\n"
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1259 "Construct and write a series of sequences to a csv file. Non-string\n"
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1260 "elements will be converted to string.");
95b6dd04da8f add writerows docstring
Skip Montanaro <skip@pobox.com>
parents: 28589
diff changeset
1261
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1262 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1263 csv_writerows(WriterObj *self, PyObject *seqseq)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1264 {
61466
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diff changeset
1265 PyObject *row_iter, *row_obj, *result;
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1266
61466
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diff changeset
1267 row_iter = PyObject_GetIter(seqseq);
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diff changeset
1268 if (row_iter == NULL) {
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parents: 51271
diff changeset
1269 PyErr_SetString(PyExc_TypeError,
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diff changeset
1270 "writerows() argument must be iterable");
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diff changeset
1271 return NULL;
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diff changeset
1272 }
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diff changeset
1273 while ((row_obj = PyIter_Next(row_iter))) {
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parents: 51271
diff changeset
1274 result = csv_writerow(self, row_obj);
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diff changeset
1275 Py_DECREF(row_obj);
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diff changeset
1276 if (!result) {
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diff changeset
1277 Py_DECREF(row_iter);
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parents: 51271
diff changeset
1278 return NULL;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1279 }
61466
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diff changeset
1280 else
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diff changeset
1281 Py_DECREF(result);
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parents: 51271
diff changeset
1282 }
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diff changeset
1283 Py_DECREF(row_iter);
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parents: 51271
diff changeset
1284 if (PyErr_Occurred())
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parents: 51271
diff changeset
1285 return NULL;
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parents: 51271
diff changeset
1286 Py_INCREF(Py_None);
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diff changeset
1287 return Py_None;
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cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1288 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1289
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1290 static struct PyMethodDef Writer_methods[] = {
61466
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diff changeset
1291 { "writerow", (PyCFunction)csv_writerow, METH_O, csv_writerow_doc},
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diff changeset
1292 { "writerows", (PyCFunction)csv_writerows, METH_O, csv_writerows_doc},
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diff changeset
1293 { NULL, NULL }
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1294 };
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1295
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1296 #define W_OFF(x) offsetof(WriterObj, x)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1297
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1298 static struct PyMemberDef Writer_memberlist[] = {
61466
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diff changeset
1299 { "dialect", T_OBJECT, W_OFF(dialect), READONLY },
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diff changeset
1300 { NULL }
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1301 };
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parents:
diff changeset
1302
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1303 static void
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1304 Writer_dealloc(WriterObj *self)
cc35ed2b26a8 new CSV file processing module - see PEP 305
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parents:
diff changeset
1305 {
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diff changeset
1306 PyObject_GC_UnTrack(self);
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diff changeset
1307 Py_XDECREF(self->dialect);
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diff changeset
1308 Py_XDECREF(self->writeline);
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diff changeset
1309 if (self->rec != NULL)
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diff changeset
1310 PyMem_Free(self->rec);
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diff changeset
1311 PyObject_GC_Del(self);
28599
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
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1312 }
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
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1313
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
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1314 static int
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
1315 Writer_traverse(WriterObj *self, visitproc visit, void *arg)
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
1316 {
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diff changeset
1317 Py_VISIT(self->dialect);
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diff changeset
1318 Py_VISIT(self->writeline);
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diff changeset
1319 return 0;
28599
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
1320 }
11660f4361f8 Make readers and writers participate in garbage collection.
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1321
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 28594
diff changeset
1322 static int
11660f4361f8 Make readers and writers participate in garbage collection.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
1323 Writer_clear(WriterObj *self)
11660f4361f8 Make readers and writers participate in garbage collection.
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parents: 28594
diff changeset
1324 {
61466
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1325 Py_CLEAR(self->dialect);
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diff changeset
1326 Py_CLEAR(self->writeline);
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1327 return 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1328 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
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1329
61466
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diff changeset
1330 PyDoc_STRVAR(Writer_Type_doc,
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1331 "CSV writer\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1332 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1333 "Writer objects are responsible for generating tabular data\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1334 "in CSV format from sequence input.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1335 );
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1336
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1337 static PyTypeObject Writer_Type = {
61466
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diff changeset
1338 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
1339 "_csv.writer", /*tp_name*/
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parents: 51271
diff changeset
1340 sizeof(WriterObj), /*tp_basicsize*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1341 0, /*tp_itemsize*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1342 /* methods */
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parents: 51271
diff changeset
1343 (destructor)Writer_dealloc, /*tp_dealloc*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1344 (printfunc)0, /*tp_print*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1345 (getattrfunc)0, /*tp_getattr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1346 (setattrfunc)0, /*tp_setattr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1347 0, /*tp_reserved*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1348 (reprfunc)0, /*tp_repr*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1349 0, /*tp_as_number*/
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parents: 51271
diff changeset
1350 0, /*tp_as_sequence*/
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parents: 51271
diff changeset
1351 0, /*tp_as_mapping*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1352 (hashfunc)0, /*tp_hash*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1353 (ternaryfunc)0, /*tp_call*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1354 (reprfunc)0, /*tp_str*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1355 0, /*tp_getattro*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1356 0, /*tp_setattro*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1357 0, /*tp_as_buffer*/
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parents: 51271
diff changeset
1358 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1359 Py_TPFLAGS_HAVE_GC, /*tp_flags*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1360 Writer_Type_doc,
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parents: 51271
diff changeset
1361 (traverseproc)Writer_traverse, /*tp_traverse*/
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1362 (inquiry)Writer_clear, /*tp_clear*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1363 0, /*tp_richcompare*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1364 0, /*tp_weaklistoffset*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1365 (getiterfunc)0, /*tp_iter*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1366 (getiterfunc)0, /*tp_iternext*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1367 Writer_methods, /*tp_methods*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1368 Writer_memberlist, /*tp_members*/
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1369 0, /*tp_getset*/
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1370 };
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1371
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1372 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1373 csv_writer(PyObject *module, PyObject *args, PyObject *keyword_args)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1374 {
61466
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diff changeset
1375 PyObject * output_file, * dialect = NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1376 WriterObj * self = PyObject_GC_New(WriterObj, &Writer_Type);
72925
7109f31300fb Rename _Py_identifier to _Py_IDENTIFIER.
Martin v. Löwis <martin@v.loewis.de>
parents: 72848
diff changeset
1377 _Py_IDENTIFIER(write);
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1378
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1379 if (!self)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1380 return NULL;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1381
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1382 self->dialect = NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1383 self->writeline = NULL;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1384
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1385 self->rec = NULL;
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parents: 51271
diff changeset
1386 self->rec_size = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1387 self->rec_len = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1388 self->num_fields = 0;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1389
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1390 if (!PyArg_UnpackTuple(args, "", 1, 2, &output_file, &dialect)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1391 Py_DECREF(self);
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parents: 51271
diff changeset
1392 return NULL;
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parents: 51271
diff changeset
1393 }
72848
81380082d216 Use identifier API for PyObject_GetAttrString.
Martin v. Löwis <martin@v.loewis.de>
parents: 72783
diff changeset
1394 self->writeline = _PyObject_GetAttrId(output_file, &PyId_write);
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1395 if (self->writeline == NULL || !PyCallable_Check(self->writeline)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1396 PyErr_SetString(PyExc_TypeError,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1397 "argument 1 must have a \"write\" method");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1398 Py_DECREF(self);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1399 return NULL;
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parents: 51271
diff changeset
1400 }
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parents: 51271
diff changeset
1401 self->dialect = (DialectObj *)_call_dialect(dialect, keyword_args);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1402 if (self->dialect == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1403 Py_DECREF(self);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1404 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1405 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1406 PyObject_GC_Track(self);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1407 return (PyObject *)self;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1408 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1409
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1410 /*
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1411 * DIALECT REGISTRY
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1412 */
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1413 static PyObject *
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1414 csv_list_dialects(PyObject *module, PyObject *args)
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1415 {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1416 return PyDict_Keys(_csvstate_global->dialects);
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1417 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1418
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1419 static PyObject *
34391
0a1608a5eb05 Allow dialect-describing keywords to be supplied to register_dialect,
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34390
diff changeset
1420 csv_register_dialect(PyObject *module, PyObject *args, PyObject *kwargs)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1421 {
61466
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parents: 51271
diff changeset
1422 PyObject *name_obj, *dialect_obj = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1423 PyObject *dialect;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1424
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1425 if (!PyArg_UnpackTuple(args, "", 1, 2, &name_obj, &dialect_obj))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1426 return NULL;
80180
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1427 if (!PyUnicode_Check(name_obj)) {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1428 PyErr_SetString(PyExc_TypeError,
80180
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1429 "dialect name must be a string");
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1430 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1431 }
80180
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1432 if (PyUnicode_READY(name_obj) == -1)
0b5f00ccf907 Issue #16145: Support legacy strings in the _csv module.
Stefan Krah <skrah@bytereef.org>
parents: 79157
diff changeset
1433 return NULL;
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1434 dialect = _call_dialect(dialect_obj, kwargs);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1435 if (dialect == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1436 return NULL;
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1437 if (PyDict_SetItem(_csvstate_global->dialects, name_obj, dialect) < 0) {
61466
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parents: 51271
diff changeset
1438 Py_DECREF(dialect);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1439 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1440 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1441 Py_DECREF(dialect);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1442 Py_INCREF(Py_None);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1443 return Py_None;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1444 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1445
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1446 static PyObject *
28591
883a694795f5 tighten up string checks
Skip Montanaro <skip@pobox.com>
parents: 28590
diff changeset
1447 csv_unregister_dialect(PyObject *module, PyObject *name_obj)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1448 {
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1449 if (PyDict_DelItem(_csvstate_global->dialects, name_obj) < 0)
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1450 return PyErr_Format(_csvstate_global->error_obj, "unknown dialect");
61466
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parents: 51271
diff changeset
1451 Py_INCREF(Py_None);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1452 return Py_None;
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1453 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1454
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1455 static PyObject *
28591
883a694795f5 tighten up string checks
Skip Montanaro <skip@pobox.com>
parents: 28590
diff changeset
1456 csv_get_dialect(PyObject *module, PyObject *name_obj)
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1457 {
61466
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parents: 51271
diff changeset
1458 return get_dialect_from_registry(name_obj);
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1459 }
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1460
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1461 static PyObject *
34406
b93845ce4454 Rename csv.set_field_limit to csv.field_size_limit (since it both sets and
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34403
diff changeset
1462 csv_field_size_limit(PyObject *module, PyObject *args)
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1463 {
61466
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parents: 51271
diff changeset
1464 PyObject *new_limit = NULL;
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1465 long old_limit = _csvstate_global->field_limit;
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1466
61466
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diff changeset
1467 if (!PyArg_UnpackTuple(args, "field_size_limit", 0, 1, &new_limit))
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parents: 51271
diff changeset
1468 return NULL;
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parents: 51271
diff changeset
1469 if (new_limit != NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1470 if (!PyLong_CheckExact(new_limit)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1471 PyErr_Format(PyExc_TypeError,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1472 "limit must be an integer");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1473 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1474 }
76987
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1475 _csvstate_global->field_limit = PyLong_AsLong(new_limit);
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1476 if (_csvstate_global->field_limit == -1 && PyErr_Occurred()) {
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
parents: 73655
diff changeset
1477 _csvstate_global->field_limit = old_limit;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 51271
diff changeset
1478 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1479 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1480 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1481 return PyLong_FromLong(old_limit);
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1482 }
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1483
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1484 /*
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1485 * MODULE
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1486 */
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1487
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1488 PyDoc_STRVAR(csv_module_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1489 "CSV parsing and writing.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1490 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1491 "This module provides classes that assist in the reading and writing\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1492 "of Comma Separated Value (CSV) files, and implements the interface\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1493 "described by PEP 305. Although many CSV files are simple to parse,\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1494 "the format is not formally defined by a stable specification and\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1495 "is subtle enough that parsing lines of a CSV file with something\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1496 "like line.split(\",\") is bound to fail. The module supports three\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1497 "basic APIs: reading, writing, and registration of dialects.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1498 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1499 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1500 "DIALECT REGISTRATION:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1501 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1502 "Readers and writers support a dialect argument, which is a convenient\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1503 "handle on a group of settings. When the dialect argument is a string,\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1504 "it identifies one of the dialects previously registered with the module.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1505 "If it is a class or instance, the attributes of the argument are used as\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1506 "the settings for the reader or writer:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1507 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1508 " class excel:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1509 " delimiter = ','\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1510 " quotechar = '\"'\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1511 " escapechar = None\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1512 " doublequote = True\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1513 " skipinitialspace = False\n"
33134
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Johannes Gijsbers <jlg@dds.nl>
parents: 32389
diff changeset
1514 " lineterminator = '\\r\\n'\n"
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1515 " quoting = QUOTE_MINIMAL\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1516 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1517 "SETTINGS:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1518 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1519 " * quotechar - specifies a one-character string to use as the \n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1520 " quoting character. It defaults to '\"'.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1521 " * delimiter - specifies a one-character string to use as the \n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1522 " field separator. It defaults to ','.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1523 " * skipinitialspace - specifies how to interpret whitespace which\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1524 " immediately follows a delimiter. It defaults to False, which\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1525 " means that whitespace immediately following a delimiter is part\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1526 " of the following field.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1527 " * lineterminator - specifies the character sequence which should \n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1528 " terminate rows.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1529 " * quoting - controls when quotes should be generated by the writer.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1530 " It can take on any of the following module constants:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1531 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1532 " csv.QUOTE_MINIMAL means only when required, for example, when a\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1533 " field contains either the quotechar or the delimiter\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1534 " csv.QUOTE_ALL means that quotes are always placed around fields.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1535 " csv.QUOTE_NONNUMERIC means that quotes are always placed around\n"
31074
48695c839d98 doc nit
Skip Montanaro <skip@pobox.com>
parents: 29389
diff changeset
1536 " fields which do not parse as integers or floating point\n"
48695c839d98 doc nit
Skip Montanaro <skip@pobox.com>
parents: 29389
diff changeset
1537 " numbers.\n"
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1538 " csv.QUOTE_NONE means that quotes are never placed around fields.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1539 " * escapechar - specifies a one-character string used to escape \n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1540 " the delimiter when quoting is set to QUOTE_NONE.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1541 " * doublequote - controls the handling of quotes inside fields. When\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1542 " True, two consecutive quotes are interpreted as one during read,\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1543 " and when writing, each quote character embedded in the data is\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1544 " written as two quotes\n");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1545
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1546 PyDoc_STRVAR(csv_reader_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1547 " csv_reader = reader(iterable [, dialect='excel']\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1548 " [optional keyword args])\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1549 " for row in csv_reader:\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1550 " process(row)\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1551 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1552 "The \"iterable\" argument can be any object that returns a line\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1553 "of input for each iteration, such as a file object or a list. The\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1554 "optional \"dialect\" parameter is discussed below. The function\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1555 "also accepts optional keyword arguments which override settings\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1556 "provided by the dialect.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1557 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1558 "The returned object is an iterator. Each iteration returns a row\n"
33134
fc1637fc4588 Quote \r\n correctly, remove random indentation (patch #1009384). Thanks
Johannes Gijsbers <jlg@dds.nl>
parents: 32389
diff changeset
1559 "of the CSV file (which can span multiple input lines):\n");
28339
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Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1560
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1561 PyDoc_STRVAR(csv_writer_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1562 " csv_writer = csv.writer(fileobj [, dialect='excel']\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1563 " [optional keyword args])\n"
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 37144
diff changeset
1564 " for row in sequence:\n"
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1565 " csv_writer.writerow(row)\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1566 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1567 " [or]\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1568 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1569 " csv_writer = csv.writer(fileobj [, dialect='excel']\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1570 " [optional keyword args])\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1571 " csv_writer.writerows(rows)\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1572 "\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1573 "The \"fileobj\" argument can be any object that supports the file API.\n");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1574
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1575 PyDoc_STRVAR(csv_list_dialects_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1576 "Return a list of all know dialect names.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1577 " names = csv.list_dialects()");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1578
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1579 PyDoc_STRVAR(csv_get_dialect_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1580 "Return the dialect instance associated with name.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1581 " dialect = csv.get_dialect(name)");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1582
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1583 PyDoc_STRVAR(csv_register_dialect_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1584 "Create a mapping from a string name to a dialect class.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1585 " dialect = csv.register_dialect(name, dialect)");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1586
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1587 PyDoc_STRVAR(csv_unregister_dialect_doc,
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1588 "Delete the name/dialect mapping associated with a string name.\n"
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1589 " csv.unregister_dialect(name)");
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1590
34406
b93845ce4454 Rename csv.set_field_limit to csv.field_size_limit (since it both sets and
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34403
diff changeset
1591 PyDoc_STRVAR(csv_field_size_limit_doc,
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1592 "Sets an upper limit on parsed fields.\n"
34406
b93845ce4454 Rename csv.set_field_limit to csv.field_size_limit (since it both sets and
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34403
diff changeset
1593 " csv.field_size_limit([limit])\n"
34396
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1594 "\n"
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1595 "Returns old limit. If limit is not given, no new limit is set and\n"
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1596 "the old limit is returned");
7059fb8b9eb3 Set an upper limit on the size of the field buffer, raise an exception
Andrew McNamara <andrewm@object-craft.com.au>
parents: 34395
diff changeset
1597
28339
cc35ed2b26a8 new CSV file processing module - see PEP 305
Skip Montanaro <skip@pobox.com>
parents:
diff changeset
1598 static struct PyMethodDef csv_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1599 { "reader", (PyCFunction)csv_reader,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1600 METH_VARARGS | METH_KEYWORDS, csv_reader_doc},
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1601 { "writer", (PyCFunction)csv_writer,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1602 METH_VARARGS | METH_KEYWORDS, csv_writer_doc},
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1603 { "list_dialects", (PyCFunction)csv_list_dialects,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 51271
diff changeset
1604 METH_NOARGS, csv_list_dialects_doc},
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1605 { "register_dialect", (PyCFunction)csv_register_dialect,
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1606 METH_VARARGS | METH_KEYWORDS, csv_register_dialect_doc},
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1607 { "unregister_dialect", (PyCFunction)csv_unregister_dialect,
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1608 METH_O, csv_unregister_dialect_doc},
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1609 { "get_dialect", (PyCFunction)csv_get_dialect,
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1610 METH_O, csv_get_dialect_doc},
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1611 { "field_size_limit", (PyCFunction)csv_field_size_limit,
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1612 METH_VARARGS, csv_field_size_limit_doc},
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1613 { NULL, NULL }
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1614 };
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1615
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94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
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1616 static struct PyModuleDef _csvmodule = {
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1617 PyModuleDef_HEAD_INIT,
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1618 "_csv",
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1619 csv_module_doc,
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1620 sizeof(_csvstate),
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1621 csv_methods,
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1622 NULL,
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1623 _csv_traverse,
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
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parents: 73655
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1624 _csv_clear,
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
Antoine Pitrou <solipsis@pitrou.net>
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1625 _csv_free
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Martin v. Löwis <martin@v.loewis.de>
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1626 };
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
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1627
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1628 PyMODINIT_FUNC
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Martin v. Löwis <martin@v.loewis.de>
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1629 PyInit__csv(void)
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1630 {
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1631 PyObject *module;
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1632 StyleDesc *style;
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1633
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1634 if (PyType_Ready(&Dialect_Type) < 0)
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1635 return NULL;
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1636
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1637 if (PyType_Ready(&Reader_Type) < 0)
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1638 return NULL;
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1639
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1640 if (PyType_Ready(&Writer_Type) < 0)
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1641 return NULL;
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1642
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1643 /* Create the module and add the functions */
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1644 module = PyModule_Create(&_csvmodule);
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1645 if (module == NULL)
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1646 return NULL;
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1647
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1648 /* Add version to the module. */
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1649 if (PyModule_AddStringConstant(module, "__version__",
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1650 MODULE_VERSION) == -1)
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1651 return NULL;
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1652
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1653 /* Set the field limit */
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1654 _csvstate(module)->field_limit = 128 * 1024;
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1655 /* Do I still need to add this var to the Module Dict? */
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1656
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1657 /* Add _dialects dictionary */
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1658 _csvstate(module)->dialects = PyDict_New();
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1659 if (_csvstate(module)->dialects == NULL)
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1660 return NULL;
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1661 Py_INCREF(_csvstate(module)->dialects);
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1662 if (PyModule_AddObject(module, "_dialects", _csvstate(module)->dialects))
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1663 return NULL;
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1664
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1665 /* Add quote styles into dictionary */
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1666 for (style = quote_styles; style->name; style++) {
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1667 if (PyModule_AddIntConstant(module, style->name,
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1668 style->style) == -1)
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1669 return NULL;
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1670 }
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1671
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1672 /* Add the Dialect type */
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1673 Py_INCREF(&Dialect_Type);
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1674 if (PyModule_AddObject(module, "Dialect", (PyObject *)&Dialect_Type))
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1675 return NULL;
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1676
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1677 /* Add the CSV exception object to the module. */
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1678 _csvstate(module)->error_obj = PyErr_NewException("_csv.Error", NULL, NULL);
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1679 if (_csvstate(module)->error_obj == NULL)
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1680 return NULL;
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1681 Py_INCREF(_csvstate(module)->error_obj);
2496602a56e5 Issue #14732: The _csv module now uses PEP 3121 module initialization.
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1682 PyModule_AddObject(module, "Error", _csvstate(module)->error_obj);
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1683 return module;
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1684 }