1 /**********************************************************************
2 regerror.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2007 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 #include "regint.h"
31 #include <stdio.h> /* for vsnprintf() */
32
33 #ifdef HAVE_STDARG_PROTOTYPES
34 #include <stdarg.h>
35 #define va_init_list(a,b) va_start(a,b)
36 #else
37 #include <varargs.h>
38 #define va_init_list(a,b) va_start(a)
39 #endif
40
41 extern UChar*
onig_error_code_to_format(int code)42 onig_error_code_to_format(int code)
43 {
44 char *p;
45
46 if (code >= 0) return (UChar* )0;
47
48 switch (code) {
49 case ONIG_MISMATCH:
50 p = "mismatch"; break;
51 case ONIG_NO_SUPPORT_CONFIG:
52 p = "no support in this configuration"; break;
53 case ONIGERR_MEMORY:
54 p = "fail to memory allocation"; break;
55 case ONIGERR_MATCH_STACK_LIMIT_OVER:
56 p = "match-stack limit over"; break;
57 case ONIGERR_PARSE_DEPTH_LIMIT_OVER:
58 p = "parse depth limit over"; break;
59 case ONIGERR_TYPE_BUG:
60 p = "undefined type (bug)"; break;
61 case ONIGERR_PARSER_BUG:
62 p = "internal parser error (bug)"; break;
63 case ONIGERR_STACK_BUG:
64 p = "stack error (bug)"; break;
65 case ONIGERR_UNDEFINED_BYTECODE:
66 p = "undefined bytecode (bug)"; break;
67 case ONIGERR_UNEXPECTED_BYTECODE:
68 p = "unexpected bytecode (bug)"; break;
69 case ONIGERR_DEFAULT_ENCODING_IS_NOT_SETTED:
70 p = "default multibyte-encoding is not setted"; break;
71 case ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR:
72 p = "can't convert to wide-char on specified multibyte-encoding"; break;
73 case ONIGERR_FAIL_TO_INITIALIZE:
74 p = "fail to initialize"; break;
75 case ONIGERR_INVALID_ARGUMENT:
76 p = "invalid argument"; break;
77 case ONIGERR_END_PATTERN_AT_LEFT_BRACE:
78 p = "end pattern at left brace"; break;
79 case ONIGERR_END_PATTERN_AT_LEFT_BRACKET:
80 p = "end pattern at left bracket"; break;
81 case ONIGERR_EMPTY_CHAR_CLASS:
82 p = "empty char-class"; break;
83 case ONIGERR_PREMATURE_END_OF_CHAR_CLASS:
84 p = "premature end of char-class"; break;
85 case ONIGERR_END_PATTERN_AT_ESCAPE:
86 p = "end pattern at escape"; break;
87 case ONIGERR_END_PATTERN_AT_META:
88 p = "end pattern at meta"; break;
89 case ONIGERR_END_PATTERN_AT_CONTROL:
90 p = "end pattern at control"; break;
91 case ONIGERR_META_CODE_SYNTAX:
92 p = "invalid meta-code syntax"; break;
93 case ONIGERR_CONTROL_CODE_SYNTAX:
94 p = "invalid control-code syntax"; break;
95 case ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE:
96 p = "char-class value at end of range"; break;
97 case ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE:
98 p = "char-class value at start of range"; break;
99 case ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS:
100 p = "unmatched range specifier in char-class"; break;
101 case ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED:
102 p = "target of repeat operator is not specified"; break;
103 case ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID:
104 p = "target of repeat operator is invalid"; break;
105 case ONIGERR_NESTED_REPEAT_OPERATOR:
106 p = "nested repeat operator"; break;
107 case ONIGERR_UNMATCHED_CLOSE_PARENTHESIS:
108 p = "unmatched close parenthesis"; break;
109 case ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS:
110 p = "end pattern with unmatched parenthesis"; break;
111 case ONIGERR_END_PATTERN_IN_GROUP:
112 p = "end pattern in group"; break;
113 case ONIGERR_UNDEFINED_GROUP_OPTION:
114 p = "undefined group option"; break;
115 case ONIGERR_INVALID_POSIX_BRACKET_TYPE:
116 p = "invalid POSIX bracket type"; break;
117 case ONIGERR_INVALID_LOOK_BEHIND_PATTERN:
118 p = "invalid pattern in look-behind"; break;
119 case ONIGERR_INVALID_REPEAT_RANGE_PATTERN:
120 p = "invalid repeat range {lower,upper}"; break;
121 case ONIGERR_TOO_BIG_NUMBER:
122 p = "too big number"; break;
123 case ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE:
124 p = "too big number for repeat range"; break;
125 case ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE:
126 p = "upper is smaller than lower in repeat range"; break;
127 case ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS:
128 p = "empty range in char class"; break;
129 case ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE:
130 p = "mismatch multibyte code length in char-class range"; break;
131 case ONIGERR_TOO_MANY_MULTI_BYTE_RANGES:
132 p = "too many multibyte code ranges are specified"; break;
133 case ONIGERR_TOO_SHORT_MULTI_BYTE_STRING:
134 p = "too short multibyte code string"; break;
135 case ONIGERR_TOO_BIG_BACKREF_NUMBER:
136 p = "too big backref number"; break;
137 case ONIGERR_INVALID_BACKREF:
138 #ifdef USE_NAMED_GROUP
139 p = "invalid backref number/name"; break;
140 #else
141 p = "invalid backref number"; break;
142 #endif
143 case ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED:
144 p = "numbered backref/call is not allowed. (use name)"; break;
145 case ONIGERR_TOO_MANY_CAPTURES:
146 p = "too many captures"; break;
147 case ONIGERR_TOO_BIG_WIDE_CHAR_VALUE:
148 p = "too big wide-char value"; break;
149 case ONIGERR_TOO_LONG_WIDE_CHAR_VALUE:
150 p = "too long wide-char value"; break;
151 case ONIGERR_INVALID_CODE_POINT_VALUE:
152 p = "invalid code point value"; break;
153 case ONIGERR_EMPTY_GROUP_NAME:
154 p = "group name is empty"; break;
155 case ONIGERR_INVALID_GROUP_NAME:
156 p = "invalid group name <%n>"; break;
157 case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
158 #ifdef USE_NAMED_GROUP
159 p = "invalid char in group name <%n>"; break;
160 #else
161 p = "invalid char in group number <%n>"; break;
162 #endif
163 case ONIGERR_UNDEFINED_NAME_REFERENCE:
164 p = "undefined name <%n> reference"; break;
165 case ONIGERR_UNDEFINED_GROUP_REFERENCE:
166 p = "undefined group <%n> reference"; break;
167 case ONIGERR_MULTIPLEX_DEFINED_NAME:
168 p = "multiplex defined name <%n>"; break;
169 case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
170 p = "multiplex definition name <%n> call"; break;
171 case ONIGERR_NEVER_ENDING_RECURSION:
172 p = "never ending recursion"; break;
173 case ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY:
174 p = "group number is too big for capture history"; break;
175 case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
176 p = "invalid character property name {%n}"; break;
177 case ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION:
178 p = "not supported encoding combination"; break;
179 case ONIGERR_INVALID_COMBINATION_OF_OPTIONS:
180 p = "invalid combination of options"; break;
181 case ONIGERR_LIBRARY_IS_NOT_INITIALIZED:
182 p = "library is not initialized"; break;
183
184 default:
185 p = "undefined error code"; break;
186 }
187
188 return (UChar* )p;
189 }
190
sprint_byte(char * s,unsigned int v)191 static void sprint_byte(char* s, unsigned int v)
192 {
193 xsnprintf(s, 3, "%02x", (v & 0377));
194 }
195
sprint_byte_with_x(char * s,unsigned int v)196 static void sprint_byte_with_x(char* s, unsigned int v)
197 {
198 xsnprintf(s, 5, "\\x%02x", (v & 0377));
199 }
200
to_ascii(OnigEncoding enc,UChar * s,UChar * end,UChar buf[],int buf_size,int * is_over)201 static int to_ascii(OnigEncoding enc, UChar *s, UChar *end,
202 UChar buf[], int buf_size, int *is_over)
203 {
204 int len;
205 UChar *p;
206 OnigCodePoint code;
207
208 if (ONIGENC_MBC_MINLEN(enc) > 1) {
209 p = s;
210 len = 0;
211 while (p < end) {
212 code = ONIGENC_MBC_TO_CODE(enc, p, end);
213 if (code >= 0x80) {
214 if (code > 0xffff && len + 10 <= buf_size) {
215 sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 24));
216 sprint_byte((char*)(&(buf[len+4])), (unsigned int)(code >> 16));
217 sprint_byte((char*)(&(buf[len+6])), (unsigned int)(code >> 8));
218 sprint_byte((char*)(&(buf[len+8])), (unsigned int)code);
219 len += 10;
220 }
221 else if (len + 6 <= buf_size) {
222 sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 8));
223 sprint_byte((char*)(&(buf[len+4])), (unsigned int)code);
224 len += 6;
225 }
226 else {
227 break;
228 }
229 }
230 else {
231 buf[len++] = (UChar )code;
232 }
233
234 p += enclen(enc, p);
235 if (len >= buf_size) break;
236 }
237
238 *is_over = ((p < end) ? 1 : 0);
239 }
240 else {
241 len = MIN((end - s), buf_size);
242 xmemcpy(buf, s, (size_t )len);
243 *is_over = ((buf_size < (end - s)) ? 1 : 0);
244 }
245
246 return len;
247 }
248
249
250 /* for ONIG_MAX_ERROR_MESSAGE_LEN */
251 #define MAX_ERROR_PAR_LEN 30
252
253 extern int
254 #ifdef HAVE_STDARG_PROTOTYPES
onig_error_code_to_str(UChar * s,int code,...)255 onig_error_code_to_str(UChar* s, int code, ...)
256 #else
257 onig_error_code_to_str(s, code, va_alist)
258 UChar* s;
259 int code;
260 va_dcl
261 #endif
262 {
263 UChar *p, *q;
264 OnigErrorInfo* einfo;
265 int len, is_over;
266 UChar parbuf[MAX_ERROR_PAR_LEN];
267 va_list vargs;
268
269 va_init_list(vargs, code);
270
271 switch (code) {
272 case ONIGERR_UNDEFINED_NAME_REFERENCE:
273 case ONIGERR_UNDEFINED_GROUP_REFERENCE:
274 case ONIGERR_MULTIPLEX_DEFINED_NAME:
275 case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
276 case ONIGERR_INVALID_GROUP_NAME:
277 case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
278 case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
279 einfo = va_arg(vargs, OnigErrorInfo*);
280 len = to_ascii(einfo->enc, einfo->par, einfo->par_end,
281 parbuf, MAX_ERROR_PAR_LEN - 3, &is_over);
282 q = onig_error_code_to_format(code);
283 p = s;
284 while (*q != '\0') {
285 if (*q == '%') {
286 q++;
287 if (*q == 'n') { /* '%n': name */
288 xmemcpy(p, parbuf, len);
289 p += len;
290 if (is_over != 0) {
291 xmemcpy(p, "...", 3);
292 p += 3;
293 }
294 q++;
295 }
296 else
297 goto normal_char;
298 }
299 else {
300 normal_char:
301 *p++ = *q++;
302 }
303 }
304 *p = '\0';
305 len = p - s;
306 break;
307
308 default:
309 q = onig_error_code_to_format(code);
310 len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, q);
311 xmemcpy(s, q, len);
312 s[len] = '\0';
313 break;
314 }
315
316 va_end(vargs);
317 return len;
318 }
319
320
321 void
322 #ifdef HAVE_STDARG_PROTOTYPES
onig_snprintf_with_pattern(UChar buf[],int bufsize,OnigEncoding enc,UChar * pat,UChar * pat_end,const UChar * fmt,...)323 onig_snprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
324 UChar* pat, UChar* pat_end, const UChar *fmt, ...)
325 #else
326 onig_snprintf_with_pattern(buf, bufsize, enc, pat, pat_end, fmt, va_alist)
327 UChar buf[];
328 int bufsize;
329 OnigEncoding enc;
330 UChar* pat;
331 UChar* pat_end;
332 const UChar *fmt;
333 va_dcl
334 #endif
335 {
336 int n, need, len;
337 UChar *p, *s, *bp;
338 UChar bs[6];
339 va_list args;
340
341 va_init_list(args, fmt);
342 n = xvsnprintf((char* )buf, bufsize, (const char* )fmt, args);
343 va_end(args);
344
345 need = (pat_end - pat) * 4 + 4;
346
347 if (n + need < bufsize) {
348 xstrcat((char* )buf, ": /", bufsize);
349 s = buf + onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, buf);
350
351 p = pat;
352 while (p < pat_end) {
353 if (ONIGENC_IS_MBC_HEAD(enc, p)) {
354 len = enclen(enc, p);
355 if (ONIGENC_MBC_MINLEN(enc) == 1) {
356 while (len-- > 0) *s++ = *p++;
357 }
358 else { /* for UTF16/32 */
359 int blen;
360
361 while (len-- > 0) {
362 sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
363 blen = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
364 bp = bs;
365 while (blen-- > 0) *s++ = *bp++;
366 }
367 }
368 }
369 else if (*p == '\\') {
370 *s++ = *p++;
371 len = enclen(enc, p);
372 while (len-- > 0) *s++ = *p++;
373 }
374 else if (*p == '/') {
375 *s++ = (unsigned char )'\\';
376 *s++ = *p++;
377 }
378 else if (!ONIGENC_IS_CODE_PRINT(enc, *p) &&
379 !ONIGENC_IS_CODE_SPACE(enc, *p)) {
380 sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
381 len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
382 bp = bs;
383 while (len-- > 0) *s++ = *bp++;
384 }
385 else {
386 *s++ = *p++;
387 }
388 }
389
390 *s++ = '/';
391 *s = '\0';
392 }
393 }
394
