# | |
# 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" |