1 | # |
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2 | # Secret Labs' Regular Expression Engine |
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3 | # |
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4 | # various symbols used by the regular expression engine. |
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5 | # run this script to update the _sre include files! |
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6 | # |
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7 | # Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved. |
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8 | # |
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9 | # See the sre.py file for information on usage and redistribution. |
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10 | # |
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11 | |
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12 | """Internal support module for sre""" |
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13 | |
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14 | # update when constants are added or removed |
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15 | |
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16 | MAGIC = 20031017 |
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17 | |
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18 | try: |
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19 | from _sre import MAXREPEAT |
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20 | except ImportError: |
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21 | import _sre |
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22 | MAXREPEAT = _sre.MAXREPEAT = 65535 |
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23 | |
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24 | # SRE standard exception (access as sre.error) |
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25 | # should this really be here? |
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26 | |
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27 | class error(Exception): |
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28 | pass |
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29 | |
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30 | # operators |
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31 | |
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32 | FAILURE = "failure" |
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33 | SUCCESS = "success" |
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34 | |
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35 | ANY = "any" |
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36 | ANY_ALL = "any_all" |
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37 | ASSERT = "assert" |
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38 | ASSERT_NOT = "assert_not" |
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39 | AT = "at" |
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40 | BIGCHARSET = "bigcharset" |
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41 | BRANCH = "branch" |
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42 | CALL = "call" |
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43 | CATEGORY = "category" |
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44 | CHARSET = "charset" |
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45 | GROUPREF = "groupref" |
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46 | GROUPREF_IGNORE = "groupref_ignore" |
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47 | GROUPREF_EXISTS = "groupref_exists" |
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48 | IN = "in" |
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49 | IN_IGNORE = "in_ignore" |
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50 | INFO = "info" |
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51 | JUMP = "jump" |
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52 | LITERAL = "literal" |
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53 | LITERAL_IGNORE = "literal_ignore" |
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54 | MARK = "mark" |
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55 | MAX_REPEAT = "max_repeat" |
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56 | MAX_UNTIL = "max_until" |
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57 | MIN_REPEAT = "min_repeat" |
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58 | MIN_UNTIL = "min_until" |
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59 | NEGATE = "negate" |
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60 | NOT_LITERAL = "not_literal" |
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61 | NOT_LITERAL_IGNORE = "not_literal_ignore" |
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62 | RANGE = "range" |
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63 | REPEAT = "repeat" |
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64 | REPEAT_ONE = "repeat_one" |
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65 | SUBPATTERN = "subpattern" |
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66 | MIN_REPEAT_ONE = "min_repeat_one" |
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67 | |
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68 | # positions |
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69 | AT_BEGINNING = "at_beginning" |
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70 | AT_BEGINNING_LINE = "at_beginning_line" |
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71 | AT_BEGINNING_STRING = "at_beginning_string" |
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72 | AT_BOUNDARY = "at_boundary" |
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73 | AT_NON_BOUNDARY = "at_non_boundary" |
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74 | AT_END = "at_end" |
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75 | AT_END_LINE = "at_end_line" |
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76 | AT_END_STRING = "at_end_string" |
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77 | AT_LOC_BOUNDARY = "at_loc_boundary" |
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78 | AT_LOC_NON_BOUNDARY = "at_loc_non_boundary" |
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79 | AT_UNI_BOUNDARY = "at_uni_boundary" |
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80 | AT_UNI_NON_BOUNDARY = "at_uni_non_boundary" |
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81 | |
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82 | # categories |
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83 | CATEGORY_DIGIT = "category_digit" |
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84 | CATEGORY_NOT_DIGIT = "category_not_digit" |
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85 | CATEGORY_SPACE = "category_space" |
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86 | CATEGORY_NOT_SPACE = "category_not_space" |
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87 | CATEGORY_WORD = "category_word" |
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88 | CATEGORY_NOT_WORD = "category_not_word" |
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89 | CATEGORY_LINEBREAK = "category_linebreak" |
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90 | CATEGORY_NOT_LINEBREAK = "category_not_linebreak" |
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91 | CATEGORY_LOC_WORD = "category_loc_word" |
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92 | CATEGORY_LOC_NOT_WORD = "category_loc_not_word" |
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93 | CATEGORY_UNI_DIGIT = "category_uni_digit" |
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94 | CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit" |
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95 | CATEGORY_UNI_SPACE = "category_uni_space" |
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96 | CATEGORY_UNI_NOT_SPACE = "category_uni_not_space" |
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97 | CATEGORY_UNI_WORD = "category_uni_word" |
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98 | CATEGORY_UNI_NOT_WORD = "category_uni_not_word" |
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99 | CATEGORY_UNI_LINEBREAK = "category_uni_linebreak" |
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100 | CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak" |
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101 | |
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102 | OPCODES = [ |
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103 | |
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104 | # failure=0 success=1 (just because it looks better that way :-) |
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105 | FAILURE, SUCCESS, |
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106 | |
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107 | ANY, ANY_ALL, |
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108 | ASSERT, ASSERT_NOT, |
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109 | AT, |
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110 | BRANCH, |
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111 | CALL, |
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112 | CATEGORY, |
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113 | CHARSET, BIGCHARSET, |
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114 | GROUPREF, GROUPREF_EXISTS, GROUPREF_IGNORE, |
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115 | IN, IN_IGNORE, |
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116 | INFO, |
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117 | JUMP, |
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118 | LITERAL, LITERAL_IGNORE, |
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119 | MARK, |
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120 | MAX_UNTIL, |
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121 | MIN_UNTIL, |
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122 | NOT_LITERAL, NOT_LITERAL_IGNORE, |
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123 | NEGATE, |
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124 | RANGE, |
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125 | REPEAT, |
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126 | REPEAT_ONE, |
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127 | SUBPATTERN, |
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128 | MIN_REPEAT_ONE |
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129 | |
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130 | ] |
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131 | |
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132 | ATCODES = [ |
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133 | AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY, |
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134 | AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING, |
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135 | AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY, |
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136 | AT_UNI_NON_BOUNDARY |
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137 | ] |
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138 | |
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139 | CHCODES = [ |
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140 | CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE, |
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141 | CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD, |
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142 | CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD, |
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143 | CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT, |
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144 | CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD, |
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145 | CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK, |
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146 | CATEGORY_UNI_NOT_LINEBREAK |
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147 | ] |
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148 | |
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149 | def makedict(list): |
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150 | d = {} |
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151 | i = 0 |
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152 | for item in list: |
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153 | d[item] = i |
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154 | i = i + 1 |
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155 | return d |
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156 | |
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157 | OPCODES = makedict(OPCODES) |
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158 | ATCODES = makedict(ATCODES) |
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159 | CHCODES = makedict(CHCODES) |
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160 | |
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161 | # replacement operations for "ignore case" mode |
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162 | OP_IGNORE = { |
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163 | GROUPREF: GROUPREF_IGNORE, |
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164 | IN: IN_IGNORE, |
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165 | LITERAL: LITERAL_IGNORE, |
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166 | NOT_LITERAL: NOT_LITERAL_IGNORE |
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167 | } |
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168 | |
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169 | AT_MULTILINE = { |
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170 | AT_BEGINNING: AT_BEGINNING_LINE, |
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171 | AT_END: AT_END_LINE |
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172 | } |
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173 | |
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174 | AT_LOCALE = { |
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175 | AT_BOUNDARY: AT_LOC_BOUNDARY, |
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176 | AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY |
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177 | } |
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178 | |
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179 | AT_UNICODE = { |
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180 | AT_BOUNDARY: AT_UNI_BOUNDARY, |
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181 | AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY |
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182 | } |
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183 | |
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184 | CH_LOCALE = { |
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185 | CATEGORY_DIGIT: CATEGORY_DIGIT, |
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186 | CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT, |
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187 | CATEGORY_SPACE: CATEGORY_SPACE, |
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188 | CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE, |
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189 | CATEGORY_WORD: CATEGORY_LOC_WORD, |
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190 | CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD, |
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191 | CATEGORY_LINEBREAK: CATEGORY_LINEBREAK, |
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192 | CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK |
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193 | } |
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194 | |
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195 | CH_UNICODE = { |
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196 | CATEGORY_DIGIT: CATEGORY_UNI_DIGIT, |
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197 | CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT, |
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198 | CATEGORY_SPACE: CATEGORY_UNI_SPACE, |
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199 | CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE, |
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200 | CATEGORY_WORD: CATEGORY_UNI_WORD, |
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201 | CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD, |
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202 | CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK, |
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203 | CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK |
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204 | } |
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205 | |
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206 | # flags |
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207 | SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking) |
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208 | SRE_FLAG_IGNORECASE = 2 # case insensitive |
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209 | SRE_FLAG_LOCALE = 4 # honour system locale |
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210 | SRE_FLAG_MULTILINE = 8 # treat target as multiline string |
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211 | SRE_FLAG_DOTALL = 16 # treat target as a single string |
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212 | SRE_FLAG_UNICODE = 32 # use unicode locale |
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213 | SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments |
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214 | SRE_FLAG_DEBUG = 128 # debugging |
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215 | |
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216 | # flags for INFO primitive |
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217 | SRE_INFO_PREFIX = 1 # has prefix |
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218 | SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix) |
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219 | SRE_INFO_CHARSET = 4 # pattern starts with character from given set |
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220 | |
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221 | if __name__ == "__main__": |
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222 | def dump(f, d, prefix): |
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223 | items = d.items() |
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224 | items.sort(key=lambda a: a[1]) |
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225 | for k, v in items: |
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226 | f.write("#define %s_%s %s\n" % (prefix, k.upper(), v)) |
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227 | f = open("sre_constants.h", "w") |
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228 | f.write("""\ |
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229 | /* |
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230 | * Secret Labs' Regular Expression Engine |
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231 | * |
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232 | * regular expression matching engine |
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233 | * |
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234 | * NOTE: This file is generated by sre_constants.py. If you need |
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235 | * to change anything in here, edit sre_constants.py and run it. |
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236 | * |
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237 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
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238 | * |
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239 | * See the _sre.c file for information on usage and redistribution. |
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240 | */ |
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241 | |
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242 | """) |
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243 | |
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244 | f.write("#define SRE_MAGIC %d\n" % MAGIC) |
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245 | |
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246 | dump(f, OPCODES, "SRE_OP") |
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247 | dump(f, ATCODES, "SRE") |
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248 | dump(f, CHCODES, "SRE") |
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249 | |
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250 | f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE) |
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251 | f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE) |
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252 | f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE) |
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253 | f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE) |
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254 | f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL) |
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255 | f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE) |
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256 | f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE) |
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257 | |
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258 | f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX) |
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259 | f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL) |
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260 | f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET) |
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261 | |
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262 | f.close() |
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263 | print "done" |
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