mirror of
https://github.com/python/cpython.git
synced 2024-12-22 08:14:22 +08:00
fd036451bf
and str (unicode) patterns get full unicode matching by default. The re.ASCII flag is also introduced to ask for ASCII matching instead.
263 lines
7.0 KiB
Python
263 lines
7.0 KiB
Python
#
|
|
# 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
|
|
|
|
# max code word in this release
|
|
|
|
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
|
|
SRE_FLAG_ASCII = 256 # use ascii "locale"
|
|
|
|
# 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")
|