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