1 /**********************************************************************
2 regposix.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2018 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #define regex_t onig_regex_t
31 #include "regint.h"
32 #undef regex_t
33 #include "onigposix.h"
34
35 #define ONIG_C(reg) ((onig_regex_t* )((reg)->onig))
36 #define PONIG_C(reg) ((onig_regex_t** )(&(reg)->onig))
37
38 /* #define ENC_STRING_LEN(enc,s,len) len = strlen(s) */
39 #define ENC_STRING_LEN(enc,s,len) do { \
40 if (ONIGENC_MBC_MINLEN(enc) == 1) { \
41 UChar* tmps = (UChar* )(s); \
42 while (*tmps != 0) tmps++; \
43 len = (int )(tmps - (UChar* )(s));\
44 } \
45 else { \
46 len = onigenc_str_bytelen_null(enc, (UChar* )s); \
47 } \
48 } while(0)
49
50 typedef struct {
51 int onig_err;
52 int posix_err;
53 } O2PERR;
54
55 static int
onig2posix_error_code(int code)56 onig2posix_error_code(int code)
57 {
58 static const O2PERR o2p[] = {
59 { ONIG_MISMATCH, REG_NOMATCH },
60 { ONIG_NO_SUPPORT_CONFIG, REG_EONIG_INTERNAL },
61 { ONIG_ABORT, REG_EONIG_INTERNAL },
62 { ONIGERR_MEMORY, REG_ESPACE },
63 { ONIGERR_MATCH_STACK_LIMIT_OVER, REG_EONIG_INTERNAL },
64 { ONIGERR_RETRY_LIMIT_IN_MATCH_OVER, REG_EONIG_INTERNAL },
65 { ONIGERR_TYPE_BUG, REG_EONIG_INTERNAL },
66 { ONIGERR_PARSER_BUG, REG_EONIG_INTERNAL },
67 { ONIGERR_STACK_BUG, REG_EONIG_INTERNAL },
68 { ONIGERR_UNDEFINED_BYTECODE, REG_EONIG_INTERNAL },
69 { ONIGERR_UNEXPECTED_BYTECODE, REG_EONIG_INTERNAL },
70 { ONIGERR_DEFAULT_ENCODING_IS_NOT_SETTED, REG_EONIG_BADARG },
71 { ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR, REG_EONIG_BADARG },
72 { ONIGERR_FAIL_TO_INITIALIZE, REG_EONIG_INTERNAL },
73 { ONIGERR_INVALID_ARGUMENT, REG_EONIG_BADARG },
74 { ONIGERR_END_PATTERN_AT_LEFT_BRACE, REG_EBRACE },
75 { ONIGERR_END_PATTERN_AT_LEFT_BRACKET, REG_EBRACK },
76 { ONIGERR_EMPTY_CHAR_CLASS, REG_ECTYPE },
77 { ONIGERR_PREMATURE_END_OF_CHAR_CLASS, REG_ECTYPE },
78 { ONIGERR_END_PATTERN_AT_ESCAPE, REG_EESCAPE },
79 { ONIGERR_END_PATTERN_AT_META, REG_EESCAPE },
80 { ONIGERR_END_PATTERN_AT_CONTROL, REG_EESCAPE },
81 { ONIGERR_META_CODE_SYNTAX, REG_BADPAT },
82 { ONIGERR_CONTROL_CODE_SYNTAX, REG_BADPAT },
83 { ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE, REG_ECTYPE },
84 { ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE, REG_ECTYPE },
85 { ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS, REG_ECTYPE },
86 { ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED, REG_BADRPT },
87 { ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID, REG_BADRPT },
88 { ONIGERR_NESTED_REPEAT_OPERATOR, REG_BADRPT },
89 { ONIGERR_UNMATCHED_CLOSE_PARENTHESIS, REG_EPAREN },
90 { ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS, REG_EPAREN },
91 { ONIGERR_END_PATTERN_IN_GROUP, REG_BADPAT },
92 { ONIGERR_UNDEFINED_GROUP_OPTION, REG_BADPAT },
93 { ONIGERR_INVALID_POSIX_BRACKET_TYPE, REG_BADPAT },
94 { ONIGERR_INVALID_LOOK_BEHIND_PATTERN, REG_BADPAT },
95 { ONIGERR_INVALID_REPEAT_RANGE_PATTERN, REG_BADPAT },
96 { ONIGERR_TOO_BIG_NUMBER, REG_BADPAT },
97 { ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE, REG_BADBR },
98 { ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE, REG_BADBR },
99 { ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS, REG_ECTYPE },
100 { ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE, REG_ECTYPE },
101 { ONIGERR_TOO_MANY_MULTI_BYTE_RANGES, REG_ECTYPE },
102 { ONIGERR_TOO_SHORT_MULTI_BYTE_STRING, REG_BADPAT },
103 { ONIGERR_TOO_BIG_BACKREF_NUMBER, REG_ESUBREG },
104 { ONIGERR_INVALID_BACKREF, REG_ESUBREG },
105 { ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED, REG_BADPAT },
106 { ONIGERR_TOO_BIG_WIDE_CHAR_VALUE, REG_EONIG_BADWC },
107 { ONIGERR_TOO_LONG_WIDE_CHAR_VALUE, REG_EONIG_BADWC },
108 { ONIGERR_INVALID_CODE_POINT_VALUE, REG_EONIG_BADWC },
109 { ONIGERR_EMPTY_GROUP_NAME, REG_BADPAT },
110 { ONIGERR_INVALID_GROUP_NAME, REG_BADPAT },
111 { ONIGERR_INVALID_CHAR_IN_GROUP_NAME, REG_BADPAT },
112 { ONIGERR_UNDEFINED_NAME_REFERENCE, REG_BADPAT },
113 { ONIGERR_UNDEFINED_GROUP_REFERENCE, REG_BADPAT },
114 { ONIGERR_MULTIPLEX_DEFINED_NAME, REG_BADPAT },
115 { ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL, REG_BADPAT },
116 { ONIGERR_NEVER_ENDING_RECURSION, REG_BADPAT },
117 { ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY, REG_BADPAT },
118 { ONIGERR_INVALID_CHAR_PROPERTY_NAME, REG_BADPAT },
119 { ONIGERR_INVALID_IF_ELSE_SYNTAX, REG_BADPAT },
120 { ONIGERR_INVALID_ABSENT_GROUP_PATTERN, REG_BADPAT },
121 { ONIGERR_INVALID_ABSENT_GROUP_GENERATOR_PATTERN, REG_BADPAT },
122 { ONIGERR_INVALID_CALLOUT_PATTERN, REG_BADPAT },
123 { ONIGERR_INVALID_CALLOUT_NAME, REG_BADPAT },
124 { ONIGERR_UNDEFINED_CALLOUT_NAME, REG_BADPAT },
125 { ONIGERR_INVALID_CALLOUT_BODY, REG_BADPAT },
126 { ONIGERR_INVALID_CALLOUT_TAG_NAME, REG_BADPAT },
127 { ONIGERR_INVALID_CALLOUT_ARG, REG_BADPAT },
128 { ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION, REG_EONIG_BADARG },
129 { ONIGERR_LIBRARY_IS_NOT_INITIALIZED, REG_EONIG_INTERNAL }
130 };
131
132 int i;
133
134 if (code >= 0) return 0;
135
136 for (i = 0; i < (int )(sizeof(o2p) / sizeof(o2p[0])); i++) {
137 if (code == o2p[i].onig_err)
138 return o2p[i].posix_err;
139 }
140
141 return REG_EONIG_INTERNAL; /* but, unknown error code */
142 }
143
144 extern int
regcomp(regex_t * reg,const char * pattern,int posix_options)145 regcomp(regex_t* reg, const char* pattern, int posix_options)
146 {
147 int r, len;
148 OnigSyntaxType* syntax = OnigDefaultSyntax;
149 OnigOptionType options;
150
151 if ((posix_options & REG_EXTENDED) == 0)
152 syntax = ONIG_SYNTAX_POSIX_BASIC;
153
154 options = syntax->options;
155 if ((posix_options & REG_ICASE) != 0)
156 ONIG_OPTION_ON(options, ONIG_OPTION_IGNORECASE);
157 if ((posix_options & REG_NEWLINE) != 0) {
158 ONIG_OPTION_ON( options, ONIG_OPTION_NEGATE_SINGLELINE);
159 ONIG_OPTION_OFF(options, ONIG_OPTION_SINGLELINE);
160 }
161
162 reg->comp_options = posix_options;
163
164 ENC_STRING_LEN(OnigEncDefaultCharEncoding, pattern, len);
165 r = onig_new(PONIG_C(reg), (UChar* )pattern, (UChar* )(pattern + len),
166 options, OnigEncDefaultCharEncoding, syntax,
167 (OnigErrorInfo* )NULL);
168 if (r != ONIG_NORMAL) {
169 return onig2posix_error_code(r);
170 }
171
172 reg->re_nsub = ONIG_C(reg)->num_mem;
173 return 0;
174 }
175
176 extern int
regexec(regex_t * reg,const char * str,size_t nmatch,regmatch_t pmatch[],int posix_options)177 regexec(regex_t* reg, const char* str, size_t nmatch,
178 regmatch_t pmatch[], int posix_options)
179 {
180 int r, i, len;
181 UChar* end;
182 regmatch_t* pm;
183 OnigOptionType options;
184
185 options = ONIG_OPTION_POSIX_REGION;
186 if ((posix_options & REG_NOTBOL) != 0) options |= ONIG_OPTION_NOTBOL;
187 if ((posix_options & REG_NOTEOL) != 0) options |= ONIG_OPTION_NOTEOL;
188
189 if (nmatch == 0 || (reg->comp_options & REG_NOSUB) != 0) {
190 pm = (regmatch_t* )NULL;
191 nmatch = 0;
192 }
193 else if ((int )nmatch < ONIG_C(reg)->num_mem + 1) {
194 pm = (regmatch_t* )xmalloc(sizeof(regmatch_t)
195 * (ONIG_C(reg)->num_mem + 1));
196 if (pm == NULL)
197 return REG_ESPACE;
198 }
199 else {
200 pm = pmatch;
201 }
202
203 ENC_STRING_LEN(ONIG_C(reg)->enc, str, len);
204 end = (UChar* )(str + len);
205 r = onig_search(ONIG_C(reg), (UChar* )str, end, (UChar* )str, end,
206 (OnigRegion* )pm, options);
207
208 if (r >= 0) {
209 r = 0; /* Match */
210 if (pm != pmatch && pm != NULL) {
211 xmemcpy(pmatch, pm, sizeof(regmatch_t) * nmatch);
212 }
213 }
214 else if (r == ONIG_MISMATCH) {
215 r = REG_NOMATCH;
216 for (i = 0; i < (int )nmatch; i++)
217 pmatch[i].rm_so = pmatch[i].rm_eo = ONIG_REGION_NOTPOS;
218 }
219 else {
220 r = onig2posix_error_code(r);
221 }
222
223 if (pm != pmatch && pm != NULL)
224 xfree(pm);
225
226 #if 0
227 if (reg->re_nsub > nmatch - 1)
228 reg->re_nsub = (nmatch <= 1 ? 0 : nmatch - 1);
229 #endif
230
231 return r;
232 }
233
234 extern void
regfree(regex_t * reg)235 regfree(regex_t* reg)
236 {
237 onig_free(ONIG_C(reg));
238 }
239
240
241 extern void
reg_set_encoding(int mb_code)242 reg_set_encoding(int mb_code)
243 {
244 OnigEncoding enc;
245
246 switch (mb_code) {
247 case REG_POSIX_ENCODING_ASCII:
248 enc = ONIG_ENCODING_ASCII;
249 break;
250 case REG_POSIX_ENCODING_UTF16_LE:
251 enc = ONIG_ENCODING_UTF16_LE;
252 break;
253 }
254
255 onig_initialize(&enc, 1);
256
257 onigenc_set_default_encoding(enc);
258 }
259
260 extern int
reg_name_to_group_numbers(regex_t * reg,const unsigned char * name,const unsigned char * name_end,int ** nums)261 reg_name_to_group_numbers(regex_t* reg,
262 const unsigned char* name, const unsigned char* name_end, int** nums)
263 {
264 return onig_name_to_group_numbers(ONIG_C(reg), name, name_end, nums);
265 }
266
267 typedef struct {
268 int (*func)(const unsigned char*, const unsigned char*,int,int*,regex_t*,void*);
269 regex_t* reg;
270 void* arg;
271 } i_wrap;
272
273 static int
i_wrapper(const UChar * name,const UChar * name_end,int ng,int * gs,onig_regex_t * reg ARG_UNUSED,void * arg)274 i_wrapper(const UChar* name, const UChar* name_end, int ng, int* gs,
275 onig_regex_t* reg ARG_UNUSED, void* arg)
276 {
277 i_wrap* warg = (i_wrap* )arg;
278
279 return (*warg->func)(name, name_end, ng, gs, warg->reg, warg->arg);
280 }
281
282 extern int
reg_foreach_name(regex_t * reg,int (* func)(const unsigned char *,const unsigned char *,int,int *,regex_t *,void *),void * arg)283 reg_foreach_name(regex_t* reg,
284 int (*func)(const unsigned char*, const unsigned char*,int,int*,regex_t*,void*),
285 void* arg)
286 {
287 i_wrap warg;
288
289 warg.func = func;
290 warg.reg = reg;
291 warg.arg = arg;
292
293 return onig_foreach_name(ONIG_C(reg), i_wrapper, &warg);
294 }
295
296 extern int
reg_number_of_names(regex_t * reg)297 reg_number_of_names(regex_t* reg)
298 {
299 return onig_number_of_names(ONIG_C(reg));
300 }
301