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261 lines
7.0 KiB
261 lines
7.0 KiB
# |
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# Secret Labs' Regular Expression Engine |
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# |
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# various symbols used by the regular expression engine. |
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# run this script to update the _sre include files! |
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# |
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# Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved. |
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# |
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# See the sre.py file for information on usage and redistribution. |
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# |
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"""Internal support module for sre""" |
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# update when constants are added or removed |
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MAGIC = 20030419 |
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# max code word in this release |
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MAXREPEAT = 65535 |
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# SRE standard exception (access as sre.error) |
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# should this really be here? |
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class error(Exception): |
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pass |
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# operators |
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FAILURE = "failure" |
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SUCCESS = "success" |
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ANY = "any" |
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ANY_ALL = "any_all" |
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ASSERT = "assert" |
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ASSERT_NOT = "assert_not" |
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AT = "at" |
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BIGCHARSET = "bigcharset" |
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BRANCH = "branch" |
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CALL = "call" |
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CATEGORY = "category" |
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CHARSET = "charset" |
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GROUPREF = "groupref" |
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GROUPREF_IGNORE = "groupref_ignore" |
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IN = "in" |
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IN_IGNORE = "in_ignore" |
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INFO = "info" |
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JUMP = "jump" |
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LITERAL = "literal" |
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LITERAL_IGNORE = "literal_ignore" |
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MARK = "mark" |
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MAX_REPEAT = "max_repeat" |
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MAX_UNTIL = "max_until" |
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MIN_REPEAT = "min_repeat" |
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MIN_UNTIL = "min_until" |
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NEGATE = "negate" |
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NOT_LITERAL = "not_literal" |
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NOT_LITERAL_IGNORE = "not_literal_ignore" |
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RANGE = "range" |
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REPEAT = "repeat" |
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REPEAT_ONE = "repeat_one" |
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SUBPATTERN = "subpattern" |
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MIN_REPEAT_ONE = "min_repeat_one" |
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# positions |
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AT_BEGINNING = "at_beginning" |
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AT_BEGINNING_LINE = "at_beginning_line" |
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AT_BEGINNING_STRING = "at_beginning_string" |
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AT_BOUNDARY = "at_boundary" |
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AT_NON_BOUNDARY = "at_non_boundary" |
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AT_END = "at_end" |
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AT_END_LINE = "at_end_line" |
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AT_END_STRING = "at_end_string" |
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AT_LOC_BOUNDARY = "at_loc_boundary" |
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AT_LOC_NON_BOUNDARY = "at_loc_non_boundary" |
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AT_UNI_BOUNDARY = "at_uni_boundary" |
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AT_UNI_NON_BOUNDARY = "at_uni_non_boundary" |
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# categories |
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CATEGORY_DIGIT = "category_digit" |
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CATEGORY_NOT_DIGIT = "category_not_digit" |
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CATEGORY_SPACE = "category_space" |
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CATEGORY_NOT_SPACE = "category_not_space" |
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CATEGORY_WORD = "category_word" |
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CATEGORY_NOT_WORD = "category_not_word" |
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CATEGORY_LINEBREAK = "category_linebreak" |
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CATEGORY_NOT_LINEBREAK = "category_not_linebreak" |
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CATEGORY_LOC_WORD = "category_loc_word" |
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CATEGORY_LOC_NOT_WORD = "category_loc_not_word" |
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CATEGORY_UNI_DIGIT = "category_uni_digit" |
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CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit" |
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CATEGORY_UNI_SPACE = "category_uni_space" |
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CATEGORY_UNI_NOT_SPACE = "category_uni_not_space" |
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CATEGORY_UNI_WORD = "category_uni_word" |
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CATEGORY_UNI_NOT_WORD = "category_uni_not_word" |
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CATEGORY_UNI_LINEBREAK = "category_uni_linebreak" |
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CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak" |
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OPCODES = [ |
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# failure=0 success=1 (just because it looks better that way :-) |
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FAILURE, SUCCESS, |
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ANY, ANY_ALL, |
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ASSERT, ASSERT_NOT, |
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AT, |
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BRANCH, |
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CALL, |
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CATEGORY, |
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CHARSET, BIGCHARSET, |
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GROUPREF, GROUPREF_IGNORE, |
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IN, IN_IGNORE, |
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INFO, |
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JUMP, |
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LITERAL, LITERAL_IGNORE, |
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MARK, |
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MAX_UNTIL, |
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MIN_UNTIL, |
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NOT_LITERAL, NOT_LITERAL_IGNORE, |
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NEGATE, |
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RANGE, |
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REPEAT, |
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REPEAT_ONE, |
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SUBPATTERN, |
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MIN_REPEAT_ONE |
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] |
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ATCODES = [ |
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AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY, |
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AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING, |
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AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY, |
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AT_UNI_NON_BOUNDARY |
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] |
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CHCODES = [ |
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CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE, |
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CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD, |
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CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD, |
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CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT, |
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CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD, |
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CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK, |
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CATEGORY_UNI_NOT_LINEBREAK |
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] |
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def makedict(list): |
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d = {} |
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i = 0 |
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for item in list: |
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d[item] = i |
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i = i + 1 |
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return d |
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OPCODES = makedict(OPCODES) |
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ATCODES = makedict(ATCODES) |
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CHCODES = makedict(CHCODES) |
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# replacement operations for "ignore case" mode |
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OP_IGNORE = { |
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GROUPREF: GROUPREF_IGNORE, |
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IN: IN_IGNORE, |
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LITERAL: LITERAL_IGNORE, |
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NOT_LITERAL: NOT_LITERAL_IGNORE |
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} |
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AT_MULTILINE = { |
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AT_BEGINNING: AT_BEGINNING_LINE, |
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AT_END: AT_END_LINE |
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} |
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AT_LOCALE = { |
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AT_BOUNDARY: AT_LOC_BOUNDARY, |
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AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY |
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} |
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AT_UNICODE = { |
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AT_BOUNDARY: AT_UNI_BOUNDARY, |
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AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY |
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} |
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CH_LOCALE = { |
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CATEGORY_DIGIT: CATEGORY_DIGIT, |
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CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT, |
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CATEGORY_SPACE: CATEGORY_SPACE, |
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CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE, |
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CATEGORY_WORD: CATEGORY_LOC_WORD, |
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CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD, |
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CATEGORY_LINEBREAK: CATEGORY_LINEBREAK, |
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CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK |
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} |
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CH_UNICODE = { |
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CATEGORY_DIGIT: CATEGORY_UNI_DIGIT, |
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CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT, |
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CATEGORY_SPACE: CATEGORY_UNI_SPACE, |
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CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE, |
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CATEGORY_WORD: CATEGORY_UNI_WORD, |
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CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD, |
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CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK, |
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CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK |
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} |
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# flags |
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SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking) |
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SRE_FLAG_IGNORECASE = 2 # case insensitive |
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SRE_FLAG_LOCALE = 4 # honour system locale |
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SRE_FLAG_MULTILINE = 8 # treat target as multiline string |
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SRE_FLAG_DOTALL = 16 # treat target as a single string |
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SRE_FLAG_UNICODE = 32 # use unicode locale |
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SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments |
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SRE_FLAG_DEBUG = 128 # debugging |
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# flags for INFO primitive |
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SRE_INFO_PREFIX = 1 # has prefix |
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SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix) |
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SRE_INFO_CHARSET = 4 # pattern starts with character from given set |
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if __name__ == "__main__": |
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import string |
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def dump(f, d, prefix): |
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items = d.items() |
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items.sort(lambda a, b: cmp(a[1], b[1])) |
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for k, v in items: |
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f.write("#define %s_%s %s\n" % (prefix, string.upper(k), v)) |
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f = open("sre_constants.h", "w") |
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f.write("""\ |
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/* |
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* Secret Labs' Regular Expression Engine |
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* |
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* regular expression matching engine |
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* |
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* NOTE: This file is generated by sre_constants.py. If you need |
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* to change anything in here, edit sre_constants.py and run it. |
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* |
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* Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
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* |
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* See the _sre.c file for information on usage and redistribution. |
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*/ |
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""") |
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f.write("#define SRE_MAGIC %d\n" % MAGIC) |
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dump(f, OPCODES, "SRE_OP") |
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dump(f, ATCODES, "SRE") |
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dump(f, CHCODES, "SRE") |
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f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE) |
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f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE) |
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f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE) |
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f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE) |
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f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL) |
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f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE) |
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f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE) |
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f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX) |
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f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL) |
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f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET) |
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f.close() |
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print "done"
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