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- #
- # Secret Labs' Regular Expression Engine
- #
- # various symbols used by the regular expression engine.
- # run this script to update the _sre include files!
- #
- # Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved.
- #
- # See the sre.py file for information on usage and redistribution.
- #
- """Internal support module for sre"""
- # update when constants are added or removed
- MAGIC = 20031017
- try:
- from _sre import MAXREPEAT
- except ImportError:
- import _sre
- MAXREPEAT = _sre.MAXREPEAT = 65535
- # SRE standard exception (access as sre.error)
- # should this really be here?
- class error(Exception):
- pass
- # operators
- FAILURE = "failure"
- SUCCESS = "success"
- ANY = "any"
- ANY_ALL = "any_all"
- ASSERT = "assert"
- ASSERT_NOT = "assert_not"
- AT = "at"
- BIGCHARSET = "bigcharset"
- BRANCH = "branch"
- CALL = "call"
- CATEGORY = "category"
- CHARSET = "charset"
- GROUPREF = "groupref"
- GROUPREF_IGNORE = "groupref_ignore"
- GROUPREF_EXISTS = "groupref_exists"
- IN = "in"
- IN_IGNORE = "in_ignore"
- INFO = "info"
- JUMP = "jump"
- LITERAL = "literal"
- LITERAL_IGNORE = "literal_ignore"
- MARK = "mark"
- MAX_REPEAT = "max_repeat"
- MAX_UNTIL = "max_until"
- MIN_REPEAT = "min_repeat"
- MIN_UNTIL = "min_until"
- NEGATE = "negate"
- NOT_LITERAL = "not_literal"
- NOT_LITERAL_IGNORE = "not_literal_ignore"
- RANGE = "range"
- REPEAT = "repeat"
- REPEAT_ONE = "repeat_one"
- SUBPATTERN = "subpattern"
- MIN_REPEAT_ONE = "min_repeat_one"
- # positions
- AT_BEGINNING = "at_beginning"
- AT_BEGINNING_LINE = "at_beginning_line"
- AT_BEGINNING_STRING = "at_beginning_string"
- AT_BOUNDARY = "at_boundary"
- AT_NON_BOUNDARY = "at_non_boundary"
- AT_END = "at_end"
- AT_END_LINE = "at_end_line"
- AT_END_STRING = "at_end_string"
- AT_LOC_BOUNDARY = "at_loc_boundary"
- AT_LOC_NON_BOUNDARY = "at_loc_non_boundary"
- AT_UNI_BOUNDARY = "at_uni_boundary"
- AT_UNI_NON_BOUNDARY = "at_uni_non_boundary"
- # categories
- CATEGORY_DIGIT = "category_digit"
- CATEGORY_NOT_DIGIT = "category_not_digit"
- CATEGORY_SPACE = "category_space"
- CATEGORY_NOT_SPACE = "category_not_space"
- CATEGORY_WORD = "category_word"
- CATEGORY_NOT_WORD = "category_not_word"
- CATEGORY_LINEBREAK = "category_linebreak"
- CATEGORY_NOT_LINEBREAK = "category_not_linebreak"
- CATEGORY_LOC_WORD = "category_loc_word"
- CATEGORY_LOC_NOT_WORD = "category_loc_not_word"
- CATEGORY_UNI_DIGIT = "category_uni_digit"
- CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit"
- CATEGORY_UNI_SPACE = "category_uni_space"
- CATEGORY_UNI_NOT_SPACE = "category_uni_not_space"
- CATEGORY_UNI_WORD = "category_uni_word"
- CATEGORY_UNI_NOT_WORD = "category_uni_not_word"
- CATEGORY_UNI_LINEBREAK = "category_uni_linebreak"
- CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak"
- OPCODES = [
- # failure=0 success=1 (just because it looks better that way :-)
- FAILURE, SUCCESS,
- ANY, ANY_ALL,
- ASSERT, ASSERT_NOT,
- AT,
- BRANCH,
- CALL,
- CATEGORY,
- CHARSET, BIGCHARSET,
- GROUPREF, GROUPREF_EXISTS, GROUPREF_IGNORE,
- IN, IN_IGNORE,
- INFO,
- JUMP,
- LITERAL, LITERAL_IGNORE,
- MARK,
- MAX_UNTIL,
- MIN_UNTIL,
- NOT_LITERAL, NOT_LITERAL_IGNORE,
- NEGATE,
- RANGE,
- REPEAT,
- REPEAT_ONE,
- SUBPATTERN,
- MIN_REPEAT_ONE
- ]
- ATCODES = [
- AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY,
- AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING,
- AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY,
- AT_UNI_NON_BOUNDARY
- ]
- CHCODES = [
- CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE,
- CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD,
- CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD,
- CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT,
- CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD,
- CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK,
- CATEGORY_UNI_NOT_LINEBREAK
- ]
- def makedict(list):
- d = {}
- i = 0
- for item in list:
- d[item] = i
- i = i + 1
- return d
- OPCODES = makedict(OPCODES)
- ATCODES = makedict(ATCODES)
- CHCODES = makedict(CHCODES)
- # replacement operations for "ignore case" mode
- OP_IGNORE = {
- GROUPREF: GROUPREF_IGNORE,
- IN: IN_IGNORE,
- LITERAL: LITERAL_IGNORE,
- NOT_LITERAL: NOT_LITERAL_IGNORE
- }
- AT_MULTILINE = {
- AT_BEGINNING: AT_BEGINNING_LINE,
- AT_END: AT_END_LINE
- }
- AT_LOCALE = {
- AT_BOUNDARY: AT_LOC_BOUNDARY,
- AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY
- }
- AT_UNICODE = {
- AT_BOUNDARY: AT_UNI_BOUNDARY,
- AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY
- }
- CH_LOCALE = {
- CATEGORY_DIGIT: CATEGORY_DIGIT,
- CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT,
- CATEGORY_SPACE: CATEGORY_SPACE,
- CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE,
- CATEGORY_WORD: CATEGORY_LOC_WORD,
- CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD,
- CATEGORY_LINEBREAK: CATEGORY_LINEBREAK,
- CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK
- }
- CH_UNICODE = {
- CATEGORY_DIGIT: CATEGORY_UNI_DIGIT,
- CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT,
- CATEGORY_SPACE: CATEGORY_UNI_SPACE,
- CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE,
- CATEGORY_WORD: CATEGORY_UNI_WORD,
- CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD,
- CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK,
- CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK
- }
- # flags
- SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking)
- SRE_FLAG_IGNORECASE = 2 # case insensitive
- SRE_FLAG_LOCALE = 4 # honour system locale
- SRE_FLAG_MULTILINE = 8 # treat target as multiline string
- SRE_FLAG_DOTALL = 16 # treat target as a single string
- SRE_FLAG_UNICODE = 32 # use unicode locale
- SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments
- SRE_FLAG_DEBUG = 128 # debugging
- # flags for INFO primitive
- SRE_INFO_PREFIX = 1 # has prefix
- SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix)
- SRE_INFO_CHARSET = 4 # pattern starts with character from given set
- if __name__ == "__main__":
- def dump(f, d, prefix):
- items = d.items()
- items.sort(key=lambda a: a[1])
- for k, v in items:
- f.write("#define %s_%s %s\n" % (prefix, k.upper(), v))
- f = open("sre_constants.h", "w")
- f.write("""\
- /*
- * Secret Labs' Regular Expression Engine
- *
- * regular expression matching engine
- *
- * NOTE: This file is generated by sre_constants.py. If you need
- * to change anything in here, edit sre_constants.py and run it.
- *
- * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved.
- *
- * See the _sre.c file for information on usage and redistribution.
- */
- """)
- f.write("#define SRE_MAGIC %d\n" % MAGIC)
- dump(f, OPCODES, "SRE_OP")
- dump(f, ATCODES, "SRE")
- dump(f, CHCODES, "SRE")
- f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE)
- f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE)
- f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE)
- f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE)
- f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL)
- f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE)
- f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE)
- f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX)
- f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL)
- f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET)
- f.close()
- print "done"
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