#
# 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
from _sre import MAXREPEAT
# 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"