#

# 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

# 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"