Commit | Line | Data |
---|---|---|
920dae64 AT |
1 | # |
2 | # Secret Labs' Regular Expression Engine | |
3 | # | |
4 | # various symbols used by the regular expression engine. | |
5 | # run this script to update the _sre include files! | |
6 | # | |
7 | # Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved. | |
8 | # | |
9 | # See the sre.py file for information on usage and redistribution. | |
10 | # | |
11 | ||
12 | """Internal support module for sre""" | |
13 | ||
14 | # update when constants are added or removed | |
15 | ||
16 | MAGIC = 20031017 | |
17 | ||
18 | # max code word in this release | |
19 | ||
20 | MAXREPEAT = 65535 | |
21 | ||
22 | # SRE standard exception (access as sre.error) | |
23 | # should this really be here? | |
24 | ||
25 | class error(Exception): | |
26 | pass | |
27 | ||
28 | # operators | |
29 | ||
30 | FAILURE = "failure" | |
31 | SUCCESS = "success" | |
32 | ||
33 | ANY = "any" | |
34 | ANY_ALL = "any_all" | |
35 | ASSERT = "assert" | |
36 | ASSERT_NOT = "assert_not" | |
37 | AT = "at" | |
38 | BIGCHARSET = "bigcharset" | |
39 | BRANCH = "branch" | |
40 | CALL = "call" | |
41 | CATEGORY = "category" | |
42 | CHARSET = "charset" | |
43 | GROUPREF = "groupref" | |
44 | GROUPREF_IGNORE = "groupref_ignore" | |
45 | GROUPREF_EXISTS = "groupref_exists" | |
46 | IN = "in" | |
47 | IN_IGNORE = "in_ignore" | |
48 | INFO = "info" | |
49 | JUMP = "jump" | |
50 | LITERAL = "literal" | |
51 | LITERAL_IGNORE = "literal_ignore" | |
52 | MARK = "mark" | |
53 | MAX_REPEAT = "max_repeat" | |
54 | MAX_UNTIL = "max_until" | |
55 | MIN_REPEAT = "min_repeat" | |
56 | MIN_UNTIL = "min_until" | |
57 | NEGATE = "negate" | |
58 | NOT_LITERAL = "not_literal" | |
59 | NOT_LITERAL_IGNORE = "not_literal_ignore" | |
60 | RANGE = "range" | |
61 | REPEAT = "repeat" | |
62 | REPEAT_ONE = "repeat_one" | |
63 | SUBPATTERN = "subpattern" | |
64 | MIN_REPEAT_ONE = "min_repeat_one" | |
65 | ||
66 | # positions | |
67 | AT_BEGINNING = "at_beginning" | |
68 | AT_BEGINNING_LINE = "at_beginning_line" | |
69 | AT_BEGINNING_STRING = "at_beginning_string" | |
70 | AT_BOUNDARY = "at_boundary" | |
71 | AT_NON_BOUNDARY = "at_non_boundary" | |
72 | AT_END = "at_end" | |
73 | AT_END_LINE = "at_end_line" | |
74 | AT_END_STRING = "at_end_string" | |
75 | AT_LOC_BOUNDARY = "at_loc_boundary" | |
76 | AT_LOC_NON_BOUNDARY = "at_loc_non_boundary" | |
77 | AT_UNI_BOUNDARY = "at_uni_boundary" | |
78 | AT_UNI_NON_BOUNDARY = "at_uni_non_boundary" | |
79 | ||
80 | # categories | |
81 | CATEGORY_DIGIT = "category_digit" | |
82 | CATEGORY_NOT_DIGIT = "category_not_digit" | |
83 | CATEGORY_SPACE = "category_space" | |
84 | CATEGORY_NOT_SPACE = "category_not_space" | |
85 | CATEGORY_WORD = "category_word" | |
86 | CATEGORY_NOT_WORD = "category_not_word" | |
87 | CATEGORY_LINEBREAK = "category_linebreak" | |
88 | CATEGORY_NOT_LINEBREAK = "category_not_linebreak" | |
89 | CATEGORY_LOC_WORD = "category_loc_word" | |
90 | CATEGORY_LOC_NOT_WORD = "category_loc_not_word" | |
91 | CATEGORY_UNI_DIGIT = "category_uni_digit" | |
92 | CATEGORY_UNI_NOT_DIGIT = "category_uni_not_digit" | |
93 | CATEGORY_UNI_SPACE = "category_uni_space" | |
94 | CATEGORY_UNI_NOT_SPACE = "category_uni_not_space" | |
95 | CATEGORY_UNI_WORD = "category_uni_word" | |
96 | CATEGORY_UNI_NOT_WORD = "category_uni_not_word" | |
97 | CATEGORY_UNI_LINEBREAK = "category_uni_linebreak" | |
98 | CATEGORY_UNI_NOT_LINEBREAK = "category_uni_not_linebreak" | |
99 | ||
100 | OPCODES = [ | |
101 | ||
102 | # failure=0 success=1 (just because it looks better that way :-) | |
103 | FAILURE, SUCCESS, | |
104 | ||
105 | ANY, ANY_ALL, | |
106 | ASSERT, ASSERT_NOT, | |
107 | AT, | |
108 | BRANCH, | |
109 | CALL, | |
110 | CATEGORY, | |
111 | CHARSET, BIGCHARSET, | |
112 | GROUPREF, GROUPREF_EXISTS, GROUPREF_IGNORE, | |
113 | IN, IN_IGNORE, | |
114 | INFO, | |
115 | JUMP, | |
116 | LITERAL, LITERAL_IGNORE, | |
117 | MARK, | |
118 | MAX_UNTIL, | |
119 | MIN_UNTIL, | |
120 | NOT_LITERAL, NOT_LITERAL_IGNORE, | |
121 | NEGATE, | |
122 | RANGE, | |
123 | REPEAT, | |
124 | REPEAT_ONE, | |
125 | SUBPATTERN, | |
126 | MIN_REPEAT_ONE | |
127 | ||
128 | ] | |
129 | ||
130 | ATCODES = [ | |
131 | AT_BEGINNING, AT_BEGINNING_LINE, AT_BEGINNING_STRING, AT_BOUNDARY, | |
132 | AT_NON_BOUNDARY, AT_END, AT_END_LINE, AT_END_STRING, | |
133 | AT_LOC_BOUNDARY, AT_LOC_NON_BOUNDARY, AT_UNI_BOUNDARY, | |
134 | AT_UNI_NON_BOUNDARY | |
135 | ] | |
136 | ||
137 | CHCODES = [ | |
138 | CATEGORY_DIGIT, CATEGORY_NOT_DIGIT, CATEGORY_SPACE, | |
139 | CATEGORY_NOT_SPACE, CATEGORY_WORD, CATEGORY_NOT_WORD, | |
140 | CATEGORY_LINEBREAK, CATEGORY_NOT_LINEBREAK, CATEGORY_LOC_WORD, | |
141 | CATEGORY_LOC_NOT_WORD, CATEGORY_UNI_DIGIT, CATEGORY_UNI_NOT_DIGIT, | |
142 | CATEGORY_UNI_SPACE, CATEGORY_UNI_NOT_SPACE, CATEGORY_UNI_WORD, | |
143 | CATEGORY_UNI_NOT_WORD, CATEGORY_UNI_LINEBREAK, | |
144 | CATEGORY_UNI_NOT_LINEBREAK | |
145 | ] | |
146 | ||
147 | def makedict(list): | |
148 | d = {} | |
149 | i = 0 | |
150 | for item in list: | |
151 | d[item] = i | |
152 | i = i + 1 | |
153 | return d | |
154 | ||
155 | OPCODES = makedict(OPCODES) | |
156 | ATCODES = makedict(ATCODES) | |
157 | CHCODES = makedict(CHCODES) | |
158 | ||
159 | # replacement operations for "ignore case" mode | |
160 | OP_IGNORE = { | |
161 | GROUPREF: GROUPREF_IGNORE, | |
162 | IN: IN_IGNORE, | |
163 | LITERAL: LITERAL_IGNORE, | |
164 | NOT_LITERAL: NOT_LITERAL_IGNORE | |
165 | } | |
166 | ||
167 | AT_MULTILINE = { | |
168 | AT_BEGINNING: AT_BEGINNING_LINE, | |
169 | AT_END: AT_END_LINE | |
170 | } | |
171 | ||
172 | AT_LOCALE = { | |
173 | AT_BOUNDARY: AT_LOC_BOUNDARY, | |
174 | AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY | |
175 | } | |
176 | ||
177 | AT_UNICODE = { | |
178 | AT_BOUNDARY: AT_UNI_BOUNDARY, | |
179 | AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY | |
180 | } | |
181 | ||
182 | CH_LOCALE = { | |
183 | CATEGORY_DIGIT: CATEGORY_DIGIT, | |
184 | CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT, | |
185 | CATEGORY_SPACE: CATEGORY_SPACE, | |
186 | CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE, | |
187 | CATEGORY_WORD: CATEGORY_LOC_WORD, | |
188 | CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD, | |
189 | CATEGORY_LINEBREAK: CATEGORY_LINEBREAK, | |
190 | CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK | |
191 | } | |
192 | ||
193 | CH_UNICODE = { | |
194 | CATEGORY_DIGIT: CATEGORY_UNI_DIGIT, | |
195 | CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT, | |
196 | CATEGORY_SPACE: CATEGORY_UNI_SPACE, | |
197 | CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE, | |
198 | CATEGORY_WORD: CATEGORY_UNI_WORD, | |
199 | CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD, | |
200 | CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK, | |
201 | CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK | |
202 | } | |
203 | ||
204 | # flags | |
205 | SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking) | |
206 | SRE_FLAG_IGNORECASE = 2 # case insensitive | |
207 | SRE_FLAG_LOCALE = 4 # honour system locale | |
208 | SRE_FLAG_MULTILINE = 8 # treat target as multiline string | |
209 | SRE_FLAG_DOTALL = 16 # treat target as a single string | |
210 | SRE_FLAG_UNICODE = 32 # use unicode locale | |
211 | SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments | |
212 | SRE_FLAG_DEBUG = 128 # debugging | |
213 | ||
214 | # flags for INFO primitive | |
215 | SRE_INFO_PREFIX = 1 # has prefix | |
216 | SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix) | |
217 | SRE_INFO_CHARSET = 4 # pattern starts with character from given set | |
218 | ||
219 | if __name__ == "__main__": | |
220 | def dump(f, d, prefix): | |
221 | items = d.items() | |
222 | items.sort(key=lambda a: a[1]) | |
223 | for k, v in items: | |
224 | f.write("#define %s_%s %s\n" % (prefix, k.upper(), v)) | |
225 | f = open("sre_constants.h", "w") | |
226 | f.write("""\ | |
227 | /* | |
228 | * Secret Labs' Regular Expression Engine | |
229 | * | |
230 | * regular expression matching engine | |
231 | * | |
232 | * NOTE: This file is generated by sre_constants.py. If you need | |
233 | * to change anything in here, edit sre_constants.py and run it. | |
234 | * | |
235 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. | |
236 | * | |
237 | * See the _sre.c file for information on usage and redistribution. | |
238 | */ | |
239 | ||
240 | """) | |
241 | ||
242 | f.write("#define SRE_MAGIC %d\n" % MAGIC) | |
243 | ||
244 | dump(f, OPCODES, "SRE_OP") | |
245 | dump(f, ATCODES, "SRE") | |
246 | dump(f, CHCODES, "SRE") | |
247 | ||
248 | f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE) | |
249 | f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE) | |
250 | f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE) | |
251 | f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE) | |
252 | f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL) | |
253 | f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE) | |
254 | f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE) | |
255 | ||
256 | f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX) | |
257 | f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL) | |
258 | f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET) | |
259 | ||
260 | f.close() | |
261 | print "done" |