1/********************************************************************** 2 regerror.c - Onigmo (Oniguruma-mod) (regular expression library) 3**********************************************************************/ 4/*- 5 * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> 6 * Copyright (c) 2011 K.Takata <kentkt AT csc DOT jp> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include "regint.h" 32#include <stdio.h> /* for vsnprintf() */ 33 34#ifdef HAVE_STDARG_PROTOTYPES 35#include <stdarg.h> 36#define va_init_list(a,b) va_start(a,b) 37#else 38#include <varargs.h> 39#define va_init_list(a,b) va_start(a) 40#endif 41 42extern UChar* 43onig_error_code_to_format(OnigPosition code) 44{ 45 const char *p; 46 47 if (code >= 0) return (UChar* )0; 48 49 switch (code) { 50 case ONIG_MISMATCH: 51 p = "mismatch"; break; 52 case ONIG_NO_SUPPORT_CONFIG: 53 p = "no support in this configuration"; break; 54 case ONIGERR_MEMORY: 55 p = "failed to allocate memory"; break; 56 case ONIGERR_MATCH_STACK_LIMIT_OVER: 57 p = "match-stack limit over"; break; 58 case ONIGERR_TYPE_BUG: 59 p = "undefined type (bug)"; break; 60 case ONIGERR_PARSER_BUG: 61 p = "internal parser error (bug)"; break; 62 case ONIGERR_STACK_BUG: 63 p = "stack error (bug)"; break; 64 case ONIGERR_UNDEFINED_BYTECODE: 65 p = "undefined bytecode (bug)"; break; 66 case ONIGERR_UNEXPECTED_BYTECODE: 67 p = "unexpected bytecode (bug)"; break; 68 case ONIGERR_DEFAULT_ENCODING_IS_NOT_SET: 69 p = "default multibyte-encoding is not set"; break; 70 case ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR: 71 p = "can't convert to wide-char on specified multibyte-encoding"; break; 72 case ONIGERR_INVALID_ARGUMENT: 73 p = "invalid argument"; break; 74 case ONIGERR_END_PATTERN_AT_LEFT_BRACE: 75 p = "end pattern at left brace"; break; 76 case ONIGERR_END_PATTERN_AT_LEFT_BRACKET: 77 p = "end pattern at left bracket"; break; 78 case ONIGERR_EMPTY_CHAR_CLASS: 79 p = "empty char-class"; break; 80 case ONIGERR_PREMATURE_END_OF_CHAR_CLASS: 81 p = "premature end of char-class"; break; 82 case ONIGERR_END_PATTERN_AT_ESCAPE: 83 p = "end pattern at escape"; break; 84 case ONIGERR_END_PATTERN_AT_META: 85 p = "end pattern at meta"; break; 86 case ONIGERR_END_PATTERN_AT_CONTROL: 87 p = "end pattern at control"; break; 88 case ONIGERR_META_CODE_SYNTAX: 89 p = "invalid meta-code syntax"; break; 90 case ONIGERR_CONTROL_CODE_SYNTAX: 91 p = "invalid control-code syntax"; break; 92 case ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE: 93 p = "char-class value at end of range"; break; 94 case ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE: 95 p = "char-class value at start of range"; break; 96 case ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS: 97 p = "unmatched range specifier in char-class"; break; 98 case ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED: 99 p = "target of repeat operator is not specified"; break; 100 case ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID: 101 p = "target of repeat operator is invalid"; break; 102 case ONIGERR_NESTED_REPEAT_OPERATOR: 103 p = "nested repeat operator"; break; 104 case ONIGERR_UNMATCHED_CLOSE_PARENTHESIS: 105 p = "unmatched close parenthesis"; break; 106 case ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS: 107 p = "end pattern with unmatched parenthesis"; break; 108 case ONIGERR_END_PATTERN_IN_GROUP: 109 p = "end pattern in group"; break; 110 case ONIGERR_UNDEFINED_GROUP_OPTION: 111 p = "undefined group option"; break; 112 case ONIGERR_INVALID_POSIX_BRACKET_TYPE: 113 p = "invalid POSIX bracket type"; break; 114 case ONIGERR_INVALID_LOOK_BEHIND_PATTERN: 115 p = "invalid pattern in look-behind"; break; 116 case ONIGERR_INVALID_REPEAT_RANGE_PATTERN: 117 p = "invalid repeat range {lower,upper}"; break; 118 case ONIGERR_INVALID_CONDITION_PATTERN: 119 p = "invalid conditional pattern"; break; 120 case ONIGERR_TOO_BIG_NUMBER: 121 p = "too big number"; break; 122 case ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE: 123 p = "too big number for repeat range"; break; 124 case ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE: 125 p = "upper is smaller than lower in repeat range"; break; 126 case ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS: 127 p = "empty range in char class"; break; 128 case ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE: 129 p = "mismatch multibyte code length in char-class range"; break; 130 case ONIGERR_TOO_MANY_MULTI_BYTE_RANGES: 131 p = "too many multibyte code ranges are specified"; break; 132 case ONIGERR_TOO_SHORT_MULTI_BYTE_STRING: 133 p = "too short multibyte code string"; break; 134 case ONIGERR_TOO_BIG_BACKREF_NUMBER: 135 p = "too big backref number"; break; 136 case ONIGERR_INVALID_BACKREF: 137#ifdef USE_NAMED_GROUP 138 p = "invalid backref number/name"; break; 139#else 140 p = "invalid backref number"; break; 141#endif 142 case ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED: 143 p = "numbered backref/call is not allowed. (use name)"; break; 144 case ONIGERR_TOO_BIG_WIDE_CHAR_VALUE: 145 p = "too big wide-char value"; break; 146 case ONIGERR_TOO_SHORT_DIGITS: 147 p = "too short digits"; break; 148 case ONIGERR_TOO_LONG_WIDE_CHAR_VALUE: 149 p = "too long wide-char value"; break; 150 case ONIGERR_INVALID_CODE_POINT_VALUE: 151 p = "invalid code point value"; break; 152 case ONIGERR_EMPTY_GROUP_NAME: 153 p = "group name is empty"; break; 154 case ONIGERR_INVALID_GROUP_NAME: 155 p = "invalid group name <%n>"; break; 156 case ONIGERR_INVALID_CHAR_IN_GROUP_NAME: 157#ifdef USE_NAMED_GROUP 158 p = "invalid char in group name <%n>"; break; 159#else 160 p = "invalid char in group number <%n>"; break; 161#endif 162 case ONIGERR_UNDEFINED_NAME_REFERENCE: 163 p = "undefined name <%n> reference"; break; 164 case ONIGERR_UNDEFINED_GROUP_REFERENCE: 165 p = "undefined group <%n> reference"; break; 166 case ONIGERR_MULTIPLEX_DEFINED_NAME: 167 p = "multiplex defined name <%n>"; break; 168 case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL: 169 p = "multiplex definition name <%n> call"; break; 170 case ONIGERR_NEVER_ENDING_RECURSION: 171 p = "never ending recursion"; break; 172 case ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY: 173 p = "group number is too big for capture history"; break; 174 case ONIGERR_INVALID_CHAR_PROPERTY_NAME: 175 p = "invalid character property name {%n}"; break; 176 case ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION: 177 p = "not supported encoding combination"; break; 178 case ONIGERR_INVALID_COMBINATION_OF_OPTIONS: 179 p = "invalid combination of options"; break; 180 case ONIGERR_OVER_THREAD_PASS_LIMIT_COUNT: 181 p = "over thread pass limit count"; break; 182 183 default: 184 p = "undefined error code"; break; 185 } 186 187 return (UChar* )p; 188} 189 190static void sprint_byte(char* s, unsigned int v) 191{ 192 sprintf(s, "%02x", (v & 0377)); 193} 194 195static void sprint_byte_with_x(char* s, unsigned int v) 196{ 197 sprintf(s, "\\x%02x", (v & 0377)); 198} 199 200static int to_ascii(OnigEncoding enc, UChar *s, UChar *end, 201 UChar buf[], int buf_size, int *is_over) 202{ 203 int len; 204 UChar *p; 205 OnigCodePoint code; 206 207 if (ONIGENC_MBC_MINLEN(enc) > 1) { 208 p = s; 209 len = 0; 210 while (p < end) { 211 code = ONIGENC_MBC_TO_CODE(enc, p, end); 212 if (code >= 0x80) { 213 if (code > 0xffff && len + 10 <= buf_size) { 214 sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 24)); 215 sprint_byte((char*)(&(buf[len+4])), (unsigned int)(code >> 16)); 216 sprint_byte((char*)(&(buf[len+6])), (unsigned int)(code >> 8)); 217 sprint_byte((char*)(&(buf[len+8])), (unsigned int)code); 218 len += 10; 219 } 220 else if (len + 6 <= buf_size) { 221 sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 8)); 222 sprint_byte((char*)(&(buf[len+4])), (unsigned int)code); 223 len += 6; 224 } 225 else { 226 break; 227 } 228 } 229 else { 230 buf[len++] = (UChar )code; 231 } 232 233 p += enclen(enc, p, end); 234 if (len >= buf_size) break; 235 } 236 237 *is_over = ((p < end) ? 1 : 0); 238 } 239 else { 240 len = (int )MIN((end - s), buf_size); 241 xmemcpy(buf, s, (size_t )len); 242 *is_over = ((buf_size < (end - s)) ? 1 : 0); 243 } 244 245 return len; 246} 247 248 249/* for ONIG_MAX_ERROR_MESSAGE_LEN */ 250#define MAX_ERROR_PAR_LEN 30 251 252extern int 253#ifdef HAVE_STDARG_PROTOTYPES 254onig_error_code_to_str(UChar* s, OnigPosition code, ...) 255#else 256onig_error_code_to_str(s, code, va_alist) 257 UChar* s; 258 OnigPosition code; 259 va_dcl 260#endif 261{ 262 UChar *p, *q; 263 OnigErrorInfo* einfo; 264 size_t len; 265 int 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 (int )len; 318} 319 320void 321onig_vsnprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc, 322 UChar* pat, UChar* pat_end, const UChar *fmt, va_list args) 323{ 324 size_t need; 325 int n, len; 326 UChar *p, *s, *bp; 327 UChar bs[6]; 328 329 n = xvsnprintf((char* )buf, bufsize, (const char* )fmt, args); 330 331 need = (pat_end - pat) * 4 + 4; 332 333 if (n + need < (size_t )bufsize) { 334 strcat((char* )buf, ": /"); 335 s = buf + onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, buf); 336 337 p = pat; 338 while (p < pat_end) { 339 if (*p == '\\') { 340 *s++ = *p++; 341 len = enclen(enc, p, pat_end); 342 while (len-- > 0) *s++ = *p++; 343 } 344 else if (*p == '/') { 345 *s++ = (unsigned char )'\\'; 346 *s++ = *p++; 347 } 348 else if (ONIGENC_IS_MBC_HEAD(enc, p, pat_end)) { 349 len = enclen(enc, p, pat_end); 350 if (ONIGENC_MBC_MINLEN(enc) == 1) { 351 while (len-- > 0) *s++ = *p++; 352 } 353 else { /* for UTF16 */ 354 int blen; 355 356 while (len-- > 0) { 357 sprint_byte_with_x((char* )bs, (unsigned int )(*p++)); 358 blen = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs); 359 bp = bs; 360 while (blen-- > 0) *s++ = *bp++; 361 } 362 } 363 } 364 else if (!ONIGENC_IS_CODE_PRINT(enc, *p) && 365 !ONIGENC_IS_CODE_SPACE(enc, *p)) { 366 sprint_byte_with_x((char* )bs, (unsigned int )(*p++)); 367 len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs); 368 bp = bs; 369 while (len-- > 0) *s++ = *bp++; 370 } 371 else { 372 *s++ = *p++; 373 } 374 } 375 376 *s++ = '/'; 377 *s = '\0'; 378 } 379} 380 381void 382#ifdef HAVE_STDARG_PROTOTYPES 383onig_snprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc, 384 UChar* pat, UChar* pat_end, const UChar *fmt, ...) 385#else 386onig_snprintf_with_pattern(buf, bufsize, enc, pat, pat_end, fmt, va_alist) 387 UChar buf[]; 388 int bufsize; 389 OnigEncoding enc; 390 UChar* pat; 391 UChar* pat_end; 392 const UChar *fmt; 393 va_dcl 394#endif 395{ 396 va_list args; 397 va_init_list(args, fmt); 398 onig_vsnprintf_with_pattern(buf, bufsize, enc, 399 pat, pat_end, fmt, args); 400 va_end(args); 401} 402 403