AppPkg/Applications/Python/Python-2.7.10/Lib/sre_constants.py

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