Mercurial > cpython-lru_cache-weakref

annotate Objects/bytes_methods.c @ 73807:1efefeda00a7 3.2

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#8414: add more tests for "assert". Initial patch by Gregory Nofi.
author Ezio Melotti <ezio.melotti@gmail.com>
date Fri, 02 Dec 2011 18:22:52 +0200
parents 586745894ab8
children 9683d59170ee
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "Python.h"
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2 #include "bytes_methods.h"
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3
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4 PyDoc_STRVAR_shared(_Py_isspace__doc__,
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5 "B.isspace() -> bool\n\
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6 \n\
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7 Return True if all characters in B are whitespace\n\
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8 and there is at least one character in B, False otherwise.");
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9
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10 PyObject*
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11 _Py_bytes_isspace(const char *cptr, Py_ssize_t len)
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12 {
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13 register const unsigned char *p
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14 = (unsigned char *) cptr;
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15 register const unsigned char *e;
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16
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17 /* Shortcut for single character strings */
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18 if (len == 1 && Py_ISSPACE(*p))
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19 Py_RETURN_TRUE;
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20
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21 /* Special case for empty strings */
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22 if (len == 0)
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23 Py_RETURN_FALSE;
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24
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25 e = p + len;
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26 for (; p < e; p++) {
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27 if (!Py_ISSPACE(*p))
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28 Py_RETURN_FALSE;
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29 }
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30 Py_RETURN_TRUE;
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31 }
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32
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33
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34 PyDoc_STRVAR_shared(_Py_isalpha__doc__,
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35 "B.isalpha() -> bool\n\
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36 \n\
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37 Return True if all characters in B are alphabetic\n\
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38 and there is at least one character in B, False otherwise.");
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39
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40 PyObject*
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41 _Py_bytes_isalpha(const char *cptr, Py_ssize_t len)
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42 {
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43 register const unsigned char *p
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44 = (unsigned char *) cptr;
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45 register const unsigned char *e;
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46
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47 /* Shortcut for single character strings */
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48 if (len == 1 && Py_ISALPHA(*p))
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49 Py_RETURN_TRUE;
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50
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51 /* Special case for empty strings */
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52 if (len == 0)
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53 Py_RETURN_FALSE;
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54
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55 e = p + len;
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56 for (; p < e; p++) {
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57 if (!Py_ISALPHA(*p))
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58 Py_RETURN_FALSE;
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59 }
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60 Py_RETURN_TRUE;
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61 }
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62
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63
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64 PyDoc_STRVAR_shared(_Py_isalnum__doc__,
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65 "B.isalnum() -> bool\n\
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66 \n\
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67 Return True if all characters in B are alphanumeric\n\
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68 and there is at least one character in B, False otherwise.");
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69
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70 PyObject*
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71 _Py_bytes_isalnum(const char *cptr, Py_ssize_t len)
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72 {
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73 register const unsigned char *p
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74 = (unsigned char *) cptr;
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75 register const unsigned char *e;
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76
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77 /* Shortcut for single character strings */
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78 if (len == 1 && Py_ISALNUM(*p))
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79 Py_RETURN_TRUE;
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80
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81 /* Special case for empty strings */
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82 if (len == 0)
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83 Py_RETURN_FALSE;
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84
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85 e = p + len;
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86 for (; p < e; p++) {
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87 if (!Py_ISALNUM(*p))
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88 Py_RETURN_FALSE;
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89 }
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90 Py_RETURN_TRUE;
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91 }
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92
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93
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94 PyDoc_STRVAR_shared(_Py_isdigit__doc__,
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95 "B.isdigit() -> bool\n\
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96 \n\
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97 Return True if all characters in B are digits\n\
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98 and there is at least one character in B, False otherwise.");
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99
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100 PyObject*
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101 _Py_bytes_isdigit(const char *cptr, Py_ssize_t len)
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102 {
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103 register const unsigned char *p
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104 = (unsigned char *) cptr;
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105 register const unsigned char *e;
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106
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107 /* Shortcut for single character strings */
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108 if (len == 1 && Py_ISDIGIT(*p))
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109 Py_RETURN_TRUE;
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110
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111 /* Special case for empty strings */
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112 if (len == 0)
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113 Py_RETURN_FALSE;
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114
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115 e = p + len;
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116 for (; p < e; p++) {
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117 if (!Py_ISDIGIT(*p))
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118 Py_RETURN_FALSE;
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119 }
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120 Py_RETURN_TRUE;
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121 }
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122
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123
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124 PyDoc_STRVAR_shared(_Py_islower__doc__,
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125 "B.islower() -> bool\n\
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126 \n\
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127 Return True if all cased characters in B are lowercase and there is\n\
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128 at least one cased character in B, False otherwise.");
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129
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130 PyObject*
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131 _Py_bytes_islower(const char *cptr, Py_ssize_t len)
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132 {
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133 register const unsigned char *p
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134 = (unsigned char *) cptr;
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135 register const unsigned char *e;
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136 int cased;
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137
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138 /* Shortcut for single character strings */
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139 if (len == 1)
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140 return PyBool_FromLong(Py_ISLOWER(*p));
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141
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142 /* Special case for empty strings */
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143 if (len == 0)
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144 Py_RETURN_FALSE;
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145
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146 e = p + len;
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147 cased = 0;
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148 for (; p < e; p++) {
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149 if (Py_ISUPPER(*p))
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150 Py_RETURN_FALSE;
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151 else if (!cased && Py_ISLOWER(*p))
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152 cased = 1;
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153 }
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154 return PyBool_FromLong(cased);
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155 }
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156
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157
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158 PyDoc_STRVAR_shared(_Py_isupper__doc__,
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159 "B.isupper() -> bool\n\
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160 \n\
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161 Return True if all cased characters in B are uppercase and there is\n\
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162 at least one cased character in B, False otherwise.");
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163
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164 PyObject*
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165 _Py_bytes_isupper(const char *cptr, Py_ssize_t len)
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166 {
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167 register const unsigned char *p
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168 = (unsigned char *) cptr;
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169 register const unsigned char *e;
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170 int cased;
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171
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172 /* Shortcut for single character strings */
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173 if (len == 1)
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174 return PyBool_FromLong(Py_ISUPPER(*p));
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175
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176 /* Special case for empty strings */
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177 if (len == 0)
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178 Py_RETURN_FALSE;
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179
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180 e = p + len;
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181 cased = 0;
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182 for (; p < e; p++) {
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183 if (Py_ISLOWER(*p))
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184 Py_RETURN_FALSE;
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185 else if (!cased && Py_ISUPPER(*p))
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186 cased = 1;
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187 }
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188 return PyBool_FromLong(cased);
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189 }
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190
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191
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192 PyDoc_STRVAR_shared(_Py_istitle__doc__,
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193 "B.istitle() -> bool\n\
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194 \n\
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195 Return True if B is a titlecased string and there is at least one\n\
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196 character in B, i.e. uppercase characters may only follow uncased\n\
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197 characters and lowercase characters only cased ones. Return False\n\
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198 otherwise.");
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199
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200 PyObject*
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201 _Py_bytes_istitle(const char *cptr, Py_ssize_t len)
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202 {
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203 register const unsigned char *p
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204 = (unsigned char *) cptr;
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205 register const unsigned char *e;
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206 int cased, previous_is_cased;
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207
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208 /* Shortcut for single character strings */
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209 if (len == 1)
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210 return PyBool_FromLong(Py_ISUPPER(*p));
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211
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212 /* Special case for empty strings */
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213 if (len == 0)
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214 Py_RETURN_FALSE;
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215
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216 e = p + len;
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217 cased = 0;
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218 previous_is_cased = 0;
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219 for (; p < e; p++) {
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220 register const unsigned char ch = *p;
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221
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222 if (Py_ISUPPER(ch)) {
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223 if (previous_is_cased)
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224 Py_RETURN_FALSE;
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225 previous_is_cased = 1;
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226 cased = 1;
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227 }
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228 else if (Py_ISLOWER(ch)) {
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229 if (!previous_is_cased)
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230 Py_RETURN_FALSE;
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231 previous_is_cased = 1;
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232 cased = 1;
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233 }
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234 else
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235 previous_is_cased = 0;
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236 }
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237 return PyBool_FromLong(cased);
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238 }
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239
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240
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241 PyDoc_STRVAR_shared(_Py_lower__doc__,
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242 "B.lower() -> copy of B\n\
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243 \n\
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244 Return a copy of B with all ASCII characters converted to lowercase.");
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245
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246 void
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247 _Py_bytes_lower(char *result, const char *cptr, Py_ssize_t len)
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248 {
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249 Py_ssize_t i;
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250
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251 Py_MEMCPY(result, cptr, len);
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252
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253 for (i = 0; i < len; i++) {
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254 int c = Py_CHARMASK(result[i]);
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255 if (Py_ISUPPER(c))
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256 result[i] = Py_TOLOWER(c);
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257 }
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258 }
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259
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260
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261 PyDoc_STRVAR_shared(_Py_upper__doc__,
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262 "B.upper() -> copy of B\n\
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263 \n\
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264 Return a copy of B with all ASCII characters converted to uppercase.");
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265
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266 void
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267 _Py_bytes_upper(char *result, const char *cptr, Py_ssize_t len)
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268 {
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269 Py_ssize_t i;
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270
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271 Py_MEMCPY(result, cptr, len);
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272
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273 for (i = 0; i < len; i++) {
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274 int c = Py_CHARMASK(result[i]);
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275 if (Py_ISLOWER(c))
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276 result[i] = Py_TOUPPER(c);
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277 }
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278 }
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279
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280
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281 PyDoc_STRVAR_shared(_Py_title__doc__,
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282 "B.title() -> copy of B\n\
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283 \n\
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284 Return a titlecased version of B, i.e. ASCII words start with uppercase\n\
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285 characters, all remaining cased characters have lowercase.");
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286
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287 void
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288 _Py_bytes_title(char *result, char *s, Py_ssize_t len)
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289 {
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290 Py_ssize_t i;
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291 int previous_is_cased = 0;
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292
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293 for (i = 0; i < len; i++) {
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294 int c = Py_CHARMASK(*s++);
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295 if (Py_ISLOWER(c)) {
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296 if (!previous_is_cased)
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297 c = Py_TOUPPER(c);
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298 previous_is_cased = 1;
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299 } else if (Py_ISUPPER(c)) {
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300 if (previous_is_cased)
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301 c = Py_TOLOWER(c);
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302 previous_is_cased = 1;
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303 } else
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304 previous_is_cased = 0;
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305 *result++ = c;
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306 }
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307 }
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308
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309
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310 PyDoc_STRVAR_shared(_Py_capitalize__doc__,
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311 "B.capitalize() -> copy of B\n\
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312 \n\
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313 Return a copy of B with only its first character capitalized (ASCII)\n\
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314 and the rest lower-cased.");
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315
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316 void
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317 _Py_bytes_capitalize(char *result, char *s, Py_ssize_t len)
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318 {
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319 Py_ssize_t i;
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320
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321 if (0 < len) {
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322 int c = Py_CHARMASK(*s++);
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323 if (Py_ISLOWER(c))
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324 *result = Py_TOUPPER(c);
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325 else
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326 *result = c;
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327 result++;
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328 }
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329 for (i = 1; i < len; i++) {
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330 int c = Py_CHARMASK(*s++);
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331 if (Py_ISUPPER(c))
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332 *result = Py_TOLOWER(c);
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333 else
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334 *result = c;
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335 result++;
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336 }
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337 }
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338
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339
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340 PyDoc_STRVAR_shared(_Py_swapcase__doc__,
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341 "B.swapcase() -> copy of B\n\
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342 \n\
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343 Return a copy of B with uppercase ASCII characters converted\n\
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344 to lowercase ASCII and vice versa.");
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345
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346 void
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347 _Py_bytes_swapcase(char *result, char *s, Py_ssize_t len)
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348 {
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349 Py_ssize_t i;
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350
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351 for (i = 0; i < len; i++) {
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352 int c = Py_CHARMASK(*s++);
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353 if (Py_ISLOWER(c)) {
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354 *result = Py_TOUPPER(c);
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355 }
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356 else if (Py_ISUPPER(c)) {
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357 *result = Py_TOLOWER(c);
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358 }
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359 else
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360 *result = c;
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361 result++;
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362 }
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363 }
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364
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365
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366 PyDoc_STRVAR_shared(_Py_maketrans__doc__,
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367 "B.maketrans(frm, to) -> translation table\n\
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368 \n\
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369 Return a translation table (a bytes object of length 256) suitable\n\
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370 for use in the bytes or bytearray translate method where each byte\n\
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371 in frm is mapped to the byte at the same position in to.\n\
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372 The bytes objects frm and to must be of the same length.");
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373
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374 static Py_ssize_t
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375 _getbuffer(PyObject *obj, Py_buffer *view)
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376 {
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377 PyBufferProcs *buffer = Py_TYPE(obj)->tp_as_buffer;
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378
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379 if (buffer == NULL || buffer->bf_getbuffer == NULL)
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380 {
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381 PyErr_Format(PyExc_TypeError,
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382 "Type %.100s doesn't support the buffer API",
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383 Py_TYPE(obj)->tp_name);
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384 return -1;
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385 }
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386
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387 if (buffer->bf_getbuffer(obj, view, PyBUF_SIMPLE) < 0)
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388 return -1;
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389 return view->len;
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390 }
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391
4407e4d07084 Add bytes/bytearray.maketrans() to mirror str.maketrans(), and deprecate
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392 PyObject *
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393 _Py_bytes_maketrans(PyObject *args)
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394 {
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395 PyObject *frm, *to, *res = NULL;
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396 Py_buffer bfrm, bto;
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397 Py_ssize_t i;
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398 char *p;
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399
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400 bfrm.len = -1;
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401 bto.len = -1;
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402
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403 if (!PyArg_ParseTuple(args, "OO:maketrans", &frm, &to))
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404 return NULL;
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405 if (_getbuffer(frm, &bfrm) < 0)
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406 return NULL;
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parents: 62802
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407 if (_getbuffer(to, &bto) < 0)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 62802
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408 goto done;
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parents: 62802
diff changeset
409 if (bfrm.len != bto.len) {
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Antoine Pitrou <solipsis@pitrou.net>
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410 PyErr_Format(PyExc_ValueError,
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
411 "maketrans arguments must have same length");
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Antoine Pitrou <solipsis@pitrou.net>
parents: 62802
diff changeset
412 goto done;
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parents: 62802
diff changeset
413 }
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diff changeset
414 res = PyBytes_FromStringAndSize(NULL, 256);
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
415 if (!res) {
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Antoine Pitrou <solipsis@pitrou.net>
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416 goto done;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 62802
diff changeset
417 }
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Antoine Pitrou <solipsis@pitrou.net>
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418 p = PyBytes_AS_STRING(res);
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419 for (i = 0; i < 256; i++)
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Antoine Pitrou <solipsis@pitrou.net>
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420 p[i] = (char) i;
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421 for (i = 0; i < bfrm.len; i++) {
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422 p[((unsigned char *)bfrm.buf)[i]] = ((char *)bto.buf)[i];
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Antoine Pitrou <solipsis@pitrou.net>
parents: 62802
diff changeset
423 }
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parents: 47301
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424
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diff changeset
425 done:
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
426 if (bfrm.len != -1)
e783c7d5ae36 Fix indentation and remove dead code.
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
427 PyBuffer_Release(&bfrm);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 62802
diff changeset
428 if (bto.len != -1)
e783c7d5ae36 Fix indentation and remove dead code.
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
429 PyBuffer_Release(&bto);
e783c7d5ae36 Fix indentation and remove dead code.
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
430 return res;
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Georg Brandl <georg@python.org>
parents: 47301
diff changeset
431 }