Tristan Matthews | 0461646 | 2013-11-14 16:09:34 -0500 | [diff] [blame] | 1 | /************************************************* |
| 2 | * Perl-Compatible Regular Expressions * |
| 3 | *************************************************/ |
| 4 | |
| 5 | |
| 6 | /* PCRE is a library of functions to support regular expressions whose syntax |
| 7 | and semantics are as close as possible to those of the Perl 5 language. |
| 8 | |
| 9 | Written by Philip Hazel |
| 10 | Copyright (c) 1997-2011 University of Cambridge |
| 11 | |
| 12 | ----------------------------------------------------------------------------- |
| 13 | Redistribution and use in source and binary forms, with or without |
| 14 | modification, are permitted provided that the following conditions are met: |
| 15 | |
| 16 | * Redistributions of source code must retain the above copyright notice, |
| 17 | this list of conditions and the following disclaimer. |
| 18 | |
| 19 | * Redistributions in binary form must reproduce the above copyright |
| 20 | notice, this list of conditions and the following disclaimer in the |
| 21 | documentation and/or other materials provided with the distribution. |
| 22 | |
| 23 | * Neither the name of the University of Cambridge nor the names of its |
| 24 | contributors may be used to endorse or promote products derived from |
| 25 | this software without specific prior written permission. |
| 26 | |
| 27 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 28 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 29 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 30 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 31 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 32 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 33 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 34 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 35 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 36 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 37 | POSSIBILITY OF SUCH DAMAGE. |
| 38 | ----------------------------------------------------------------------------- |
| 39 | */ |
| 40 | |
| 41 | /* This header contains definitions that are shared between the different |
| 42 | modules, but which are not relevant to the exported API. This includes some |
| 43 | functions whose names all begin with "_pcre_". */ |
| 44 | |
| 45 | #ifndef PCRE_INTERNAL_H |
| 46 | #define PCRE_INTERNAL_H |
| 47 | |
| 48 | /* Define PCRE_DEBUG to get debugging output on stdout. */ |
| 49 | |
| 50 | #if 0 |
| 51 | #define PCRE_DEBUG |
| 52 | #endif |
| 53 | |
| 54 | /* We do not support both EBCDIC and UTF-8 at the same time. The "configure" |
| 55 | script prevents both being selected, but not everybody uses "configure". */ |
| 56 | |
| 57 | #if defined EBCDIC && defined SUPPORT_UTF8 |
| 58 | #error The use of both EBCDIC and SUPPORT_UTF8 is not supported. |
| 59 | #endif |
| 60 | |
| 61 | /* If SUPPORT_UCP is defined, SUPPORT_UTF8 must also be defined. The |
| 62 | "configure" script ensures this, but not everybody uses "configure". */ |
| 63 | |
| 64 | #if defined SUPPORT_UCP && !defined SUPPORT_UTF8 |
| 65 | #define SUPPORT_UTF8 1 |
| 66 | #endif |
| 67 | |
| 68 | /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef |
| 69 | inline, and there are *still* stupid compilers about that don't like indented |
| 70 | pre-processor statements, or at least there were when I first wrote this. After |
| 71 | all, it had only been about 10 years then... |
| 72 | |
| 73 | It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so |
| 74 | be absolutely sure we get our version. */ |
| 75 | |
| 76 | #undef DPRINTF |
| 77 | #ifdef PCRE_DEBUG |
| 78 | #define DPRINTF(p) printf p |
| 79 | #else |
| 80 | #define DPRINTF(p) /* Nothing */ |
| 81 | #endif |
| 82 | |
| 83 | |
| 84 | /* Standard C headers plus the external interface definition. The only time |
| 85 | setjmp and stdarg are used is when NO_RECURSE is set. */ |
| 86 | |
| 87 | #include <ctype.h> |
| 88 | #include <limits.h> |
| 89 | #include <stddef.h> |
| 90 | #include <stdio.h> |
| 91 | #include <stdlib.h> |
| 92 | #include <string.h> |
| 93 | |
| 94 | /* When compiling a DLL for Windows, the exported symbols have to be declared |
| 95 | using some MS magic. I found some useful information on this web page: |
| 96 | http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the |
| 97 | information there, using __declspec(dllexport) without "extern" we have a |
| 98 | definition; with "extern" we have a declaration. The settings here override the |
| 99 | setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL, |
| 100 | which is all that is needed for applications (they just import the symbols). We |
| 101 | use: |
| 102 | |
| 103 | PCRE_EXP_DECL for declarations |
| 104 | PCRE_EXP_DEFN for definitions of exported functions |
| 105 | PCRE_EXP_DATA_DEFN for definitions of exported variables |
| 106 | |
| 107 | The reason for the two DEFN macros is that in non-Windows environments, one |
| 108 | does not want to have "extern" before variable definitions because it leads to |
| 109 | compiler warnings. So we distinguish between functions and variables. In |
| 110 | Windows, the two should always be the same. |
| 111 | |
| 112 | The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest, |
| 113 | which is an application, but needs to import this file in order to "peek" at |
| 114 | internals, can #include pcre.h first to get an application's-eye view. |
| 115 | |
| 116 | In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon, |
| 117 | special-purpose environments) might want to stick other stuff in front of |
| 118 | exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and |
| 119 | PCRE_EXP_DATA_DEFN only if they are not already set. */ |
| 120 | |
| 121 | #ifndef PCRE_EXP_DECL |
| 122 | # ifdef _WIN32 |
| 123 | # ifndef PCRE_STATIC |
| 124 | # define PCRE_EXP_DECL extern __declspec(dllexport) |
| 125 | # define PCRE_EXP_DEFN __declspec(dllexport) |
| 126 | # define PCRE_EXP_DATA_DEFN __declspec(dllexport) |
| 127 | # else |
| 128 | # define PCRE_EXP_DECL extern |
| 129 | # define PCRE_EXP_DEFN |
| 130 | # define PCRE_EXP_DATA_DEFN |
| 131 | # endif |
| 132 | # else |
| 133 | # ifdef __cplusplus |
| 134 | # define PCRE_EXP_DECL extern "C" |
| 135 | # else |
| 136 | # define PCRE_EXP_DECL extern |
| 137 | # endif |
| 138 | # ifndef PCRE_EXP_DEFN |
| 139 | # define PCRE_EXP_DEFN PCRE_EXP_DECL |
| 140 | # endif |
| 141 | # ifndef PCRE_EXP_DATA_DEFN |
| 142 | # define PCRE_EXP_DATA_DEFN |
| 143 | # endif |
| 144 | # endif |
| 145 | #endif |
| 146 | |
| 147 | /* When compiling with the MSVC compiler, it is sometimes necessary to include |
| 148 | a "calling convention" before exported function names. (This is secondhand |
| 149 | information; I know nothing about MSVC myself). For example, something like |
| 150 | |
| 151 | void __cdecl function(....) |
| 152 | |
| 153 | might be needed. In order so make this easy, all the exported functions have |
| 154 | PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not |
| 155 | set, we ensure here that it has no effect. */ |
| 156 | |
| 157 | #ifndef PCRE_CALL_CONVENTION |
| 158 | #define PCRE_CALL_CONVENTION |
| 159 | #endif |
| 160 | |
| 161 | /* We need to have types that specify unsigned 16-bit and 32-bit integers. We |
| 162 | cannot determine these outside the compilation (e.g. by running a program as |
| 163 | part of "configure") because PCRE is often cross-compiled for use on other |
| 164 | systems. Instead we make use of the maximum sizes that are available at |
| 165 | preprocessor time in standard C environments. */ |
| 166 | |
| 167 | #if USHRT_MAX == 65535 |
| 168 | typedef unsigned short pcre_uint16; |
| 169 | typedef short pcre_int16; |
| 170 | #elif UINT_MAX == 65535 |
| 171 | typedef unsigned int pcre_uint16; |
| 172 | typedef int pcre_int16; |
| 173 | #else |
| 174 | #error Cannot determine a type for 16-bit unsigned integers |
| 175 | #endif |
| 176 | |
| 177 | #if UINT_MAX == 4294967295 |
| 178 | typedef unsigned int pcre_uint32; |
| 179 | typedef int pcre_int32; |
| 180 | #elif ULONG_MAX == 4294967295 |
| 181 | typedef unsigned long int pcre_uint32; |
| 182 | typedef long int pcre_int32; |
| 183 | #else |
| 184 | #error Cannot determine a type for 32-bit unsigned integers |
| 185 | #endif |
| 186 | |
| 187 | /* When checking for integer overflow in pcre_compile(), we need to handle |
| 188 | large integers. If a 64-bit integer type is available, we can use that. |
| 189 | Otherwise we have to cast to double, which of course requires floating point |
| 190 | arithmetic. Handle this by defining a macro for the appropriate type. If |
| 191 | stdint.h is available, include it; it may define INT64_MAX. Systems that do not |
| 192 | have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set |
| 193 | by "configure". */ |
| 194 | |
| 195 | #if HAVE_STDINT_H |
| 196 | #include <stdint.h> |
| 197 | #elif HAVE_INTTYPES_H |
| 198 | #include <inttypes.h> |
| 199 | #endif |
| 200 | |
| 201 | #if defined INT64_MAX || defined int64_t |
| 202 | #define INT64_OR_DOUBLE int64_t |
| 203 | #else |
| 204 | #define INT64_OR_DOUBLE double |
| 205 | #endif |
| 206 | |
| 207 | /* All character handling must be done as unsigned characters. Otherwise there |
| 208 | are problems with top-bit-set characters and functions such as isspace(). |
| 209 | However, we leave the interface to the outside world as char *, because that |
| 210 | should make things easier for callers. We define a short type for unsigned char |
| 211 | to save lots of typing. I tried "uchar", but it causes problems on Digital |
| 212 | Unix, where it is defined in sys/types, so use "uschar" instead. */ |
| 213 | |
| 214 | typedef unsigned char uschar; |
| 215 | |
| 216 | /* This is an unsigned int value that no character can ever have. UTF-8 |
| 217 | characters only go up to 0x7fffffff (though Unicode doesn't go beyond |
| 218 | 0x0010ffff). */ |
| 219 | |
| 220 | #define NOTACHAR 0xffffffff |
| 221 | |
| 222 | /* PCRE is able to support several different kinds of newline (CR, LF, CRLF, |
| 223 | "any" and "anycrlf" at present). The following macros are used to package up |
| 224 | testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various |
| 225 | modules to indicate in which datablock the parameters exist, and what the |
| 226 | start/end of string field names are. */ |
| 227 | |
| 228 | #define NLTYPE_FIXED 0 /* Newline is a fixed length string */ |
| 229 | #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */ |
| 230 | #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */ |
| 231 | |
| 232 | /* This macro checks for a newline at the given position */ |
| 233 | |
| 234 | #define IS_NEWLINE(p) \ |
| 235 | ((NLBLOCK->nltype != NLTYPE_FIXED)? \ |
| 236 | ((p) < NLBLOCK->PSEND && \ |
| 237 | _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\ |
| 238 | utf8)) \ |
| 239 | : \ |
| 240 | ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \ |
| 241 | (p)[0] == NLBLOCK->nl[0] && \ |
| 242 | (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \ |
| 243 | ) \ |
| 244 | ) |
| 245 | |
| 246 | /* This macro checks for a newline immediately preceding the given position */ |
| 247 | |
| 248 | #define WAS_NEWLINE(p) \ |
| 249 | ((NLBLOCK->nltype != NLTYPE_FIXED)? \ |
| 250 | ((p) > NLBLOCK->PSSTART && \ |
| 251 | _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \ |
| 252 | &(NLBLOCK->nllen), utf8)) \ |
| 253 | : \ |
| 254 | ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \ |
| 255 | (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \ |
| 256 | (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \ |
| 257 | ) \ |
| 258 | ) |
| 259 | |
| 260 | /* When PCRE is compiled as a C++ library, the subject pointer can be replaced |
| 261 | with a custom type. This makes it possible, for example, to allow pcre_exec() |
| 262 | to process subject strings that are discontinuous by using a smart pointer |
| 263 | class. It must always be possible to inspect all of the subject string in |
| 264 | pcre_exec() because of the way it backtracks. Two macros are required in the |
| 265 | normal case, for sign-unspecified and unsigned char pointers. The former is |
| 266 | used for the external interface and appears in pcre.h, which is why its name |
| 267 | must begin with PCRE_. */ |
| 268 | |
| 269 | #ifdef CUSTOM_SUBJECT_PTR |
| 270 | #define PCRE_SPTR CUSTOM_SUBJECT_PTR |
| 271 | #define USPTR CUSTOM_SUBJECT_PTR |
| 272 | #else |
| 273 | #define PCRE_SPTR const char * |
| 274 | #define USPTR const unsigned char * |
| 275 | #endif |
| 276 | |
| 277 | |
| 278 | |
| 279 | /* Include the public PCRE header and the definitions of UCP character property |
| 280 | values. */ |
| 281 | |
| 282 | #include "pcre.h" |
| 283 | #include "ucp.h" |
| 284 | |
| 285 | /* When compiling for use with the Virtual Pascal compiler, these functions |
| 286 | need to have their names changed. PCRE must be compiled with the -DVPCOMPAT |
| 287 | option on the command line. */ |
| 288 | |
| 289 | #ifdef VPCOMPAT |
| 290 | #define strlen(s) _strlen(s) |
| 291 | #define strncmp(s1,s2,m) _strncmp(s1,s2,m) |
| 292 | #define memcmp(s,c,n) _memcmp(s,c,n) |
| 293 | #define memcpy(d,s,n) _memcpy(d,s,n) |
| 294 | #define memmove(d,s,n) _memmove(d,s,n) |
| 295 | #define memset(s,c,n) _memset(s,c,n) |
| 296 | #else /* VPCOMPAT */ |
| 297 | |
| 298 | /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(), |
| 299 | define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY |
| 300 | is set. Otherwise, include an emulating function for those systems that have |
| 301 | neither (there some non-Unix environments where this is the case). */ |
| 302 | |
| 303 | #ifndef HAVE_MEMMOVE |
| 304 | #undef memmove /* some systems may have a macro */ |
| 305 | #ifdef HAVE_BCOPY |
| 306 | #define memmove(a, b, c) bcopy(b, a, c) |
| 307 | #else /* HAVE_BCOPY */ |
| 308 | static void * |
| 309 | pcre_memmove(void *d, const void *s, size_t n) |
| 310 | { |
| 311 | size_t i; |
| 312 | unsigned char *dest = (unsigned char *)d; |
| 313 | const unsigned char *src = (const unsigned char *)s; |
| 314 | if (dest > src) |
| 315 | { |
| 316 | dest += n; |
| 317 | src += n; |
| 318 | for (i = 0; i < n; ++i) *(--dest) = *(--src); |
| 319 | return (void *)dest; |
| 320 | } |
| 321 | else |
| 322 | { |
| 323 | for (i = 0; i < n; ++i) *dest++ = *src++; |
| 324 | return (void *)(dest - n); |
| 325 | } |
| 326 | } |
| 327 | #define memmove(a, b, c) pcre_memmove(a, b, c) |
| 328 | #endif /* not HAVE_BCOPY */ |
| 329 | #endif /* not HAVE_MEMMOVE */ |
| 330 | #endif /* not VPCOMPAT */ |
| 331 | |
| 332 | |
| 333 | /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored |
| 334 | in big-endian order) by default. These are used, for example, to link from the |
| 335 | start of a subpattern to its alternatives and its end. The use of 2 bytes per |
| 336 | offset limits the size of the compiled regex to around 64K, which is big enough |
| 337 | for almost everybody. However, I received a request for an even bigger limit. |
| 338 | For this reason, and also to make the code easier to maintain, the storing and |
| 339 | loading of offsets from the byte string is now handled by the macros that are |
| 340 | defined here. |
| 341 | |
| 342 | The macros are controlled by the value of LINK_SIZE. This defaults to 2 in |
| 343 | the config.h file, but can be overridden by using -D on the command line. This |
| 344 | is automated on Unix systems via the "configure" command. */ |
| 345 | |
| 346 | #if LINK_SIZE == 2 |
| 347 | |
| 348 | #define PUT(a,n,d) \ |
| 349 | (a[n] = (d) >> 8), \ |
| 350 | (a[(n)+1] = (d) & 255) |
| 351 | |
| 352 | #define GET(a,n) \ |
| 353 | (((a)[n] << 8) | (a)[(n)+1]) |
| 354 | |
| 355 | #define MAX_PATTERN_SIZE (1 << 16) |
| 356 | |
| 357 | |
| 358 | #elif LINK_SIZE == 3 |
| 359 | |
| 360 | #define PUT(a,n,d) \ |
| 361 | (a[n] = (d) >> 16), \ |
| 362 | (a[(n)+1] = (d) >> 8), \ |
| 363 | (a[(n)+2] = (d) & 255) |
| 364 | |
| 365 | #define GET(a,n) \ |
| 366 | (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2]) |
| 367 | |
| 368 | #define MAX_PATTERN_SIZE (1 << 24) |
| 369 | |
| 370 | |
| 371 | #elif LINK_SIZE == 4 |
| 372 | |
| 373 | #define PUT(a,n,d) \ |
| 374 | (a[n] = (d) >> 24), \ |
| 375 | (a[(n)+1] = (d) >> 16), \ |
| 376 | (a[(n)+2] = (d) >> 8), \ |
| 377 | (a[(n)+3] = (d) & 255) |
| 378 | |
| 379 | #define GET(a,n) \ |
| 380 | (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3]) |
| 381 | |
| 382 | #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */ |
| 383 | |
| 384 | |
| 385 | #else |
| 386 | #error LINK_SIZE must be either 2, 3, or 4 |
| 387 | #endif |
| 388 | |
| 389 | |
| 390 | /* Convenience macro defined in terms of the others */ |
| 391 | |
| 392 | #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE |
| 393 | |
| 394 | |
| 395 | /* PCRE uses some other 2-byte quantities that do not change when the size of |
| 396 | offsets changes. There are used for repeat counts and for other things such as |
| 397 | capturing parenthesis numbers in back references. */ |
| 398 | |
| 399 | #define PUT2(a,n,d) \ |
| 400 | a[n] = (d) >> 8; \ |
| 401 | a[(n)+1] = (d) & 255 |
| 402 | |
| 403 | #define GET2(a,n) \ |
| 404 | (((a)[n] << 8) | (a)[(n)+1]) |
| 405 | |
| 406 | #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2 |
| 407 | |
| 408 | |
| 409 | /* When UTF-8 encoding is being used, a character is no longer just a single |
| 410 | byte. The macros for character handling generate simple sequences when used in |
| 411 | byte-mode, and more complicated ones for UTF-8 characters. GETCHARLENTEST is |
| 412 | not used when UTF-8 is not supported, so it is not defined, and BACKCHAR should |
| 413 | never be called in byte mode. To make sure they can never even appear when |
| 414 | UTF-8 support is omitted, we don't even define them. */ |
| 415 | |
| 416 | #ifndef SUPPORT_UTF8 |
| 417 | #define GETCHAR(c, eptr) c = *eptr; |
| 418 | #define GETCHARTEST(c, eptr) c = *eptr; |
| 419 | #define GETCHARINC(c, eptr) c = *eptr++; |
| 420 | #define GETCHARINCTEST(c, eptr) c = *eptr++; |
| 421 | #define GETCHARLEN(c, eptr, len) c = *eptr; |
| 422 | /* #define GETCHARLENTEST(c, eptr, len) */ |
| 423 | /* #define BACKCHAR(eptr) */ |
| 424 | |
| 425 | #else /* SUPPORT_UTF8 */ |
| 426 | |
| 427 | /* These macros were originally written in the form of loops that used data |
| 428 | from the tables whose names start with _pcre_utf8_table. They were rewritten by |
| 429 | a user so as not to use loops, because in some environments this gives a |
| 430 | significant performance advantage, and it seems never to do any harm. */ |
| 431 | |
| 432 | /* Base macro to pick up the remaining bytes of a UTF-8 character, not |
| 433 | advancing the pointer. */ |
| 434 | |
| 435 | #define GETUTF8(c, eptr) \ |
| 436 | { \ |
| 437 | if ((c & 0x20) == 0) \ |
| 438 | c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \ |
| 439 | else if ((c & 0x10) == 0) \ |
| 440 | c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \ |
| 441 | else if ((c & 0x08) == 0) \ |
| 442 | c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \ |
| 443 | ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \ |
| 444 | else if ((c & 0x04) == 0) \ |
| 445 | c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \ |
| 446 | ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \ |
| 447 | (eptr[4] & 0x3f); \ |
| 448 | else \ |
| 449 | c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \ |
| 450 | ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \ |
| 451 | ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \ |
| 452 | } |
| 453 | |
| 454 | /* Get the next UTF-8 character, not advancing the pointer. This is called when |
| 455 | we know we are in UTF-8 mode. */ |
| 456 | |
| 457 | #define GETCHAR(c, eptr) \ |
| 458 | c = *eptr; \ |
| 459 | if (c >= 0xc0) GETUTF8(c, eptr); |
| 460 | |
| 461 | /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the |
| 462 | pointer. */ |
| 463 | |
| 464 | #define GETCHARTEST(c, eptr) \ |
| 465 | c = *eptr; \ |
| 466 | if (utf8 && c >= 0xc0) GETUTF8(c, eptr); |
| 467 | |
| 468 | /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing |
| 469 | the pointer. */ |
| 470 | |
| 471 | #define GETUTF8INC(c, eptr) \ |
| 472 | { \ |
| 473 | if ((c & 0x20) == 0) \ |
| 474 | c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \ |
| 475 | else if ((c & 0x10) == 0) \ |
| 476 | { \ |
| 477 | c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \ |
| 478 | eptr += 2; \ |
| 479 | } \ |
| 480 | else if ((c & 0x08) == 0) \ |
| 481 | { \ |
| 482 | c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \ |
| 483 | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \ |
| 484 | eptr += 3; \ |
| 485 | } \ |
| 486 | else if ((c & 0x04) == 0) \ |
| 487 | { \ |
| 488 | c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \ |
| 489 | ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \ |
| 490 | (eptr[3] & 0x3f); \ |
| 491 | eptr += 4; \ |
| 492 | } \ |
| 493 | else \ |
| 494 | { \ |
| 495 | c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \ |
| 496 | ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \ |
| 497 | ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \ |
| 498 | eptr += 5; \ |
| 499 | } \ |
| 500 | } |
| 501 | |
| 502 | /* Get the next UTF-8 character, advancing the pointer. This is called when we |
| 503 | know we are in UTF-8 mode. */ |
| 504 | |
| 505 | #define GETCHARINC(c, eptr) \ |
| 506 | c = *eptr++; \ |
| 507 | if (c >= 0xc0) GETUTF8INC(c, eptr); |
| 508 | |
| 509 | /* Get the next character, testing for UTF-8 mode, and advancing the pointer. |
| 510 | This is called when we don't know if we are in UTF-8 mode. */ |
| 511 | |
| 512 | #define GETCHARINCTEST(c, eptr) \ |
| 513 | c = *eptr++; \ |
| 514 | if (utf8 && c >= 0xc0) GETUTF8INC(c, eptr); |
| 515 | |
| 516 | /* Base macro to pick up the remaining bytes of a UTF-8 character, not |
| 517 | advancing the pointer, incrementing the length. */ |
| 518 | |
| 519 | #define GETUTF8LEN(c, eptr, len) \ |
| 520 | { \ |
| 521 | if ((c & 0x20) == 0) \ |
| 522 | { \ |
| 523 | c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \ |
| 524 | len++; \ |
| 525 | } \ |
| 526 | else if ((c & 0x10) == 0) \ |
| 527 | { \ |
| 528 | c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \ |
| 529 | len += 2; \ |
| 530 | } \ |
| 531 | else if ((c & 0x08) == 0) \ |
| 532 | {\ |
| 533 | c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \ |
| 534 | ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \ |
| 535 | len += 3; \ |
| 536 | } \ |
| 537 | else if ((c & 0x04) == 0) \ |
| 538 | { \ |
| 539 | c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \ |
| 540 | ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \ |
| 541 | (eptr[4] & 0x3f); \ |
| 542 | len += 4; \ |
| 543 | } \ |
| 544 | else \ |
| 545 | {\ |
| 546 | c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \ |
| 547 | ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \ |
| 548 | ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \ |
| 549 | len += 5; \ |
| 550 | } \ |
| 551 | } |
| 552 | |
| 553 | /* Get the next UTF-8 character, not advancing the pointer, incrementing length |
| 554 | if there are extra bytes. This is called when we know we are in UTF-8 mode. */ |
| 555 | |
| 556 | #define GETCHARLEN(c, eptr, len) \ |
| 557 | c = *eptr; \ |
| 558 | if (c >= 0xc0) GETUTF8LEN(c, eptr, len); |
| 559 | |
| 560 | /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the |
| 561 | pointer, incrementing length if there are extra bytes. This is called when we |
| 562 | do not know if we are in UTF-8 mode. */ |
| 563 | |
| 564 | #define GETCHARLENTEST(c, eptr, len) \ |
| 565 | c = *eptr; \ |
| 566 | if (utf8 && c >= 0xc0) GETUTF8LEN(c, eptr, len); |
| 567 | |
| 568 | /* If the pointer is not at the start of a character, move it back until |
| 569 | it is. This is called only in UTF-8 mode - we don't put a test within the macro |
| 570 | because almost all calls are already within a block of UTF-8 only code. */ |
| 571 | |
| 572 | #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr-- |
| 573 | |
| 574 | #endif /* SUPPORT_UTF8 */ |
| 575 | |
| 576 | |
| 577 | /* In case there is no definition of offsetof() provided - though any proper |
| 578 | Standard C system should have one. */ |
| 579 | |
| 580 | #ifndef offsetof |
| 581 | #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field)) |
| 582 | #endif |
| 583 | |
| 584 | |
| 585 | /* Private flags containing information about the compiled regex. They used to |
| 586 | live at the top end of the options word, but that got almost full, so now they |
| 587 | are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as |
| 588 | the restrictions on partial matching have been lifted. It remains for backwards |
| 589 | compatibility. */ |
| 590 | |
| 591 | #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */ |
| 592 | #define PCRE_FIRSTSET 0x0002 /* first_byte is set */ |
| 593 | #define PCRE_REQCHSET 0x0004 /* req_byte is set */ |
| 594 | #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */ |
| 595 | #define PCRE_JCHANGED 0x0010 /* j option used in regex */ |
| 596 | #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */ |
| 597 | #define PCRE_HASTHEN 0x0040 /* pattern contains (*THEN) */ |
| 598 | |
| 599 | /* Flags for the "extra" block produced by pcre_study(). */ |
| 600 | |
| 601 | #define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */ |
| 602 | #define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */ |
| 603 | |
| 604 | /* Masks for identifying the public options that are permitted at compile |
| 605 | time, run time, or study time, respectively. */ |
| 606 | |
| 607 | #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \ |
| 608 | PCRE_NEWLINE_ANYCRLF) |
| 609 | |
| 610 | #define PUBLIC_COMPILE_OPTIONS \ |
| 611 | (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \ |
| 612 | PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \ |
| 613 | PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \ |
| 614 | PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \ |
| 615 | PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE) |
| 616 | |
| 617 | #define PUBLIC_EXEC_OPTIONS \ |
| 618 | (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \ |
| 619 | PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \ |
| 620 | PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE) |
| 621 | |
| 622 | #define PUBLIC_DFA_EXEC_OPTIONS \ |
| 623 | (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \ |
| 624 | PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \ |
| 625 | PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \ |
| 626 | PCRE_NO_START_OPTIMIZE) |
| 627 | |
| 628 | #define PUBLIC_STUDY_OPTIONS \ |
| 629 | PCRE_STUDY_JIT_COMPILE |
| 630 | |
| 631 | /* Magic number to provide a small check against being handed junk. Also used |
| 632 | to detect whether a pattern was compiled on a host of different endianness. */ |
| 633 | |
| 634 | #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */ |
| 635 | |
| 636 | /* Negative values for the firstchar and reqchar variables */ |
| 637 | |
| 638 | #define REQ_UNSET (-2) |
| 639 | #define REQ_NONE (-1) |
| 640 | |
| 641 | /* The maximum remaining length of subject we are prepared to search for a |
| 642 | req_byte match. */ |
| 643 | |
| 644 | #define REQ_BYTE_MAX 1000 |
| 645 | |
| 646 | /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a |
| 647 | variable-length repeat, or a anything other than literal characters. */ |
| 648 | |
| 649 | #define REQ_CASELESS 0x0100 /* indicates caselessness */ |
| 650 | #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */ |
| 651 | |
| 652 | /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in |
| 653 | environments where these macros are defined elsewhere. Unfortunately, there |
| 654 | is no way to do the same for the typedef. */ |
| 655 | |
| 656 | typedef int BOOL; |
| 657 | |
| 658 | #ifndef FALSE |
| 659 | #define FALSE 0 |
| 660 | #define TRUE 1 |
| 661 | #endif |
| 662 | |
| 663 | /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal |
| 664 | character constants like '*' because the compiler would emit their EBCDIC code, |
| 665 | which is different from their ASCII/UTF-8 code. Instead we define macros for |
| 666 | the characters so that they always use the ASCII/UTF-8 code when UTF-8 support |
| 667 | is enabled. When UTF-8 support is not enabled, the definitions use character |
| 668 | literals. Both character and string versions of each character are needed, and |
| 669 | there are some longer strings as well. |
| 670 | |
| 671 | This means that, on EBCDIC platforms, the PCRE library can handle either |
| 672 | EBCDIC, or UTF-8, but not both. To support both in the same compiled library |
| 673 | would need different lookups depending on whether PCRE_UTF8 was set or not. |
| 674 | This would make it impossible to use characters in switch/case statements, |
| 675 | which would reduce performance. For a theoretical use (which nobody has asked |
| 676 | for) in a minority area (EBCDIC platforms), this is not sensible. Any |
| 677 | application that did need both could compile two versions of the library, using |
| 678 | macros to give the functions distinct names. */ |
| 679 | |
| 680 | #ifndef SUPPORT_UTF8 |
| 681 | |
| 682 | /* UTF-8 support is not enabled; use the platform-dependent character literals |
| 683 | so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */ |
| 684 | |
| 685 | #define CHAR_HT '\t' |
| 686 | #define CHAR_VT '\v' |
| 687 | #define CHAR_FF '\f' |
| 688 | #define CHAR_CR '\r' |
| 689 | #define CHAR_NL '\n' |
| 690 | #define CHAR_BS '\b' |
| 691 | #define CHAR_BEL '\a' |
| 692 | #ifdef EBCDIC |
| 693 | #define CHAR_ESC '\047' |
| 694 | #define CHAR_DEL '\007' |
| 695 | #else |
| 696 | #define CHAR_ESC '\033' |
| 697 | #define CHAR_DEL '\177' |
| 698 | #endif |
| 699 | |
| 700 | #define CHAR_SPACE ' ' |
| 701 | #define CHAR_EXCLAMATION_MARK '!' |
| 702 | #define CHAR_QUOTATION_MARK '"' |
| 703 | #define CHAR_NUMBER_SIGN '#' |
| 704 | #define CHAR_DOLLAR_SIGN '$' |
| 705 | #define CHAR_PERCENT_SIGN '%' |
| 706 | #define CHAR_AMPERSAND '&' |
| 707 | #define CHAR_APOSTROPHE '\'' |
| 708 | #define CHAR_LEFT_PARENTHESIS '(' |
| 709 | #define CHAR_RIGHT_PARENTHESIS ')' |
| 710 | #define CHAR_ASTERISK '*' |
| 711 | #define CHAR_PLUS '+' |
| 712 | #define CHAR_COMMA ',' |
| 713 | #define CHAR_MINUS '-' |
| 714 | #define CHAR_DOT '.' |
| 715 | #define CHAR_SLASH '/' |
| 716 | #define CHAR_0 '0' |
| 717 | #define CHAR_1 '1' |
| 718 | #define CHAR_2 '2' |
| 719 | #define CHAR_3 '3' |
| 720 | #define CHAR_4 '4' |
| 721 | #define CHAR_5 '5' |
| 722 | #define CHAR_6 '6' |
| 723 | #define CHAR_7 '7' |
| 724 | #define CHAR_8 '8' |
| 725 | #define CHAR_9 '9' |
| 726 | #define CHAR_COLON ':' |
| 727 | #define CHAR_SEMICOLON ';' |
| 728 | #define CHAR_LESS_THAN_SIGN '<' |
| 729 | #define CHAR_EQUALS_SIGN '=' |
| 730 | #define CHAR_GREATER_THAN_SIGN '>' |
| 731 | #define CHAR_QUESTION_MARK '?' |
| 732 | #define CHAR_COMMERCIAL_AT '@' |
| 733 | #define CHAR_A 'A' |
| 734 | #define CHAR_B 'B' |
| 735 | #define CHAR_C 'C' |
| 736 | #define CHAR_D 'D' |
| 737 | #define CHAR_E 'E' |
| 738 | #define CHAR_F 'F' |
| 739 | #define CHAR_G 'G' |
| 740 | #define CHAR_H 'H' |
| 741 | #define CHAR_I 'I' |
| 742 | #define CHAR_J 'J' |
| 743 | #define CHAR_K 'K' |
| 744 | #define CHAR_L 'L' |
| 745 | #define CHAR_M 'M' |
| 746 | #define CHAR_N 'N' |
| 747 | #define CHAR_O 'O' |
| 748 | #define CHAR_P 'P' |
| 749 | #define CHAR_Q 'Q' |
| 750 | #define CHAR_R 'R' |
| 751 | #define CHAR_S 'S' |
| 752 | #define CHAR_T 'T' |
| 753 | #define CHAR_U 'U' |
| 754 | #define CHAR_V 'V' |
| 755 | #define CHAR_W 'W' |
| 756 | #define CHAR_X 'X' |
| 757 | #define CHAR_Y 'Y' |
| 758 | #define CHAR_Z 'Z' |
| 759 | #define CHAR_LEFT_SQUARE_BRACKET '[' |
| 760 | #define CHAR_BACKSLASH '\\' |
| 761 | #define CHAR_RIGHT_SQUARE_BRACKET ']' |
| 762 | #define CHAR_CIRCUMFLEX_ACCENT '^' |
| 763 | #define CHAR_UNDERSCORE '_' |
| 764 | #define CHAR_GRAVE_ACCENT '`' |
| 765 | #define CHAR_a 'a' |
| 766 | #define CHAR_b 'b' |
| 767 | #define CHAR_c 'c' |
| 768 | #define CHAR_d 'd' |
| 769 | #define CHAR_e 'e' |
| 770 | #define CHAR_f 'f' |
| 771 | #define CHAR_g 'g' |
| 772 | #define CHAR_h 'h' |
| 773 | #define CHAR_i 'i' |
| 774 | #define CHAR_j 'j' |
| 775 | #define CHAR_k 'k' |
| 776 | #define CHAR_l 'l' |
| 777 | #define CHAR_m 'm' |
| 778 | #define CHAR_n 'n' |
| 779 | #define CHAR_o 'o' |
| 780 | #define CHAR_p 'p' |
| 781 | #define CHAR_q 'q' |
| 782 | #define CHAR_r 'r' |
| 783 | #define CHAR_s 's' |
| 784 | #define CHAR_t 't' |
| 785 | #define CHAR_u 'u' |
| 786 | #define CHAR_v 'v' |
| 787 | #define CHAR_w 'w' |
| 788 | #define CHAR_x 'x' |
| 789 | #define CHAR_y 'y' |
| 790 | #define CHAR_z 'z' |
| 791 | #define CHAR_LEFT_CURLY_BRACKET '{' |
| 792 | #define CHAR_VERTICAL_LINE '|' |
| 793 | #define CHAR_RIGHT_CURLY_BRACKET '}' |
| 794 | #define CHAR_TILDE '~' |
| 795 | |
| 796 | #define STR_HT "\t" |
| 797 | #define STR_VT "\v" |
| 798 | #define STR_FF "\f" |
| 799 | #define STR_CR "\r" |
| 800 | #define STR_NL "\n" |
| 801 | #define STR_BS "\b" |
| 802 | #define STR_BEL "\a" |
| 803 | #ifdef EBCDIC |
| 804 | #define STR_ESC "\047" |
| 805 | #define STR_DEL "\007" |
| 806 | #else |
| 807 | #define STR_ESC "\033" |
| 808 | #define STR_DEL "\177" |
| 809 | #endif |
| 810 | |
| 811 | #define STR_SPACE " " |
| 812 | #define STR_EXCLAMATION_MARK "!" |
| 813 | #define STR_QUOTATION_MARK "\"" |
| 814 | #define STR_NUMBER_SIGN "#" |
| 815 | #define STR_DOLLAR_SIGN "$" |
| 816 | #define STR_PERCENT_SIGN "%" |
| 817 | #define STR_AMPERSAND "&" |
| 818 | #define STR_APOSTROPHE "'" |
| 819 | #define STR_LEFT_PARENTHESIS "(" |
| 820 | #define STR_RIGHT_PARENTHESIS ")" |
| 821 | #define STR_ASTERISK "*" |
| 822 | #define STR_PLUS "+" |
| 823 | #define STR_COMMA "," |
| 824 | #define STR_MINUS "-" |
| 825 | #define STR_DOT "." |
| 826 | #define STR_SLASH "/" |
| 827 | #define STR_0 "0" |
| 828 | #define STR_1 "1" |
| 829 | #define STR_2 "2" |
| 830 | #define STR_3 "3" |
| 831 | #define STR_4 "4" |
| 832 | #define STR_5 "5" |
| 833 | #define STR_6 "6" |
| 834 | #define STR_7 "7" |
| 835 | #define STR_8 "8" |
| 836 | #define STR_9 "9" |
| 837 | #define STR_COLON ":" |
| 838 | #define STR_SEMICOLON ";" |
| 839 | #define STR_LESS_THAN_SIGN "<" |
| 840 | #define STR_EQUALS_SIGN "=" |
| 841 | #define STR_GREATER_THAN_SIGN ">" |
| 842 | #define STR_QUESTION_MARK "?" |
| 843 | #define STR_COMMERCIAL_AT "@" |
| 844 | #define STR_A "A" |
| 845 | #define STR_B "B" |
| 846 | #define STR_C "C" |
| 847 | #define STR_D "D" |
| 848 | #define STR_E "E" |
| 849 | #define STR_F "F" |
| 850 | #define STR_G "G" |
| 851 | #define STR_H "H" |
| 852 | #define STR_I "I" |
| 853 | #define STR_J "J" |
| 854 | #define STR_K "K" |
| 855 | #define STR_L "L" |
| 856 | #define STR_M "M" |
| 857 | #define STR_N "N" |
| 858 | #define STR_O "O" |
| 859 | #define STR_P "P" |
| 860 | #define STR_Q "Q" |
| 861 | #define STR_R "R" |
| 862 | #define STR_S "S" |
| 863 | #define STR_T "T" |
| 864 | #define STR_U "U" |
| 865 | #define STR_V "V" |
| 866 | #define STR_W "W" |
| 867 | #define STR_X "X" |
| 868 | #define STR_Y "Y" |
| 869 | #define STR_Z "Z" |
| 870 | #define STR_LEFT_SQUARE_BRACKET "[" |
| 871 | #define STR_BACKSLASH "\\" |
| 872 | #define STR_RIGHT_SQUARE_BRACKET "]" |
| 873 | #define STR_CIRCUMFLEX_ACCENT "^" |
| 874 | #define STR_UNDERSCORE "_" |
| 875 | #define STR_GRAVE_ACCENT "`" |
| 876 | #define STR_a "a" |
| 877 | #define STR_b "b" |
| 878 | #define STR_c "c" |
| 879 | #define STR_d "d" |
| 880 | #define STR_e "e" |
| 881 | #define STR_f "f" |
| 882 | #define STR_g "g" |
| 883 | #define STR_h "h" |
| 884 | #define STR_i "i" |
| 885 | #define STR_j "j" |
| 886 | #define STR_k "k" |
| 887 | #define STR_l "l" |
| 888 | #define STR_m "m" |
| 889 | #define STR_n "n" |
| 890 | #define STR_o "o" |
| 891 | #define STR_p "p" |
| 892 | #define STR_q "q" |
| 893 | #define STR_r "r" |
| 894 | #define STR_s "s" |
| 895 | #define STR_t "t" |
| 896 | #define STR_u "u" |
| 897 | #define STR_v "v" |
| 898 | #define STR_w "w" |
| 899 | #define STR_x "x" |
| 900 | #define STR_y "y" |
| 901 | #define STR_z "z" |
| 902 | #define STR_LEFT_CURLY_BRACKET "{" |
| 903 | #define STR_VERTICAL_LINE "|" |
| 904 | #define STR_RIGHT_CURLY_BRACKET "}" |
| 905 | #define STR_TILDE "~" |
| 906 | |
| 907 | #define STRING_ACCEPT0 "ACCEPT\0" |
| 908 | #define STRING_COMMIT0 "COMMIT\0" |
| 909 | #define STRING_F0 "F\0" |
| 910 | #define STRING_FAIL0 "FAIL\0" |
| 911 | #define STRING_MARK0 "MARK\0" |
| 912 | #define STRING_PRUNE0 "PRUNE\0" |
| 913 | #define STRING_SKIP0 "SKIP\0" |
| 914 | #define STRING_THEN "THEN" |
| 915 | |
| 916 | #define STRING_alpha0 "alpha\0" |
| 917 | #define STRING_lower0 "lower\0" |
| 918 | #define STRING_upper0 "upper\0" |
| 919 | #define STRING_alnum0 "alnum\0" |
| 920 | #define STRING_ascii0 "ascii\0" |
| 921 | #define STRING_blank0 "blank\0" |
| 922 | #define STRING_cntrl0 "cntrl\0" |
| 923 | #define STRING_digit0 "digit\0" |
| 924 | #define STRING_graph0 "graph\0" |
| 925 | #define STRING_print0 "print\0" |
| 926 | #define STRING_punct0 "punct\0" |
| 927 | #define STRING_space0 "space\0" |
| 928 | #define STRING_word0 "word\0" |
| 929 | #define STRING_xdigit "xdigit" |
| 930 | |
| 931 | #define STRING_DEFINE "DEFINE" |
| 932 | |
| 933 | #define STRING_CR_RIGHTPAR "CR)" |
| 934 | #define STRING_LF_RIGHTPAR "LF)" |
| 935 | #define STRING_CRLF_RIGHTPAR "CRLF)" |
| 936 | #define STRING_ANY_RIGHTPAR "ANY)" |
| 937 | #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)" |
| 938 | #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)" |
| 939 | #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)" |
| 940 | #define STRING_UTF8_RIGHTPAR "UTF8)" |
| 941 | #define STRING_UCP_RIGHTPAR "UCP)" |
| 942 | #define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)" |
| 943 | |
| 944 | #else /* SUPPORT_UTF8 */ |
| 945 | |
| 946 | /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This |
| 947 | works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode |
| 948 | only. */ |
| 949 | |
| 950 | #define CHAR_HT '\011' |
| 951 | #define CHAR_VT '\013' |
| 952 | #define CHAR_FF '\014' |
| 953 | #define CHAR_CR '\015' |
| 954 | #define CHAR_NL '\012' |
| 955 | #define CHAR_BS '\010' |
| 956 | #define CHAR_BEL '\007' |
| 957 | #define CHAR_ESC '\033' |
| 958 | #define CHAR_DEL '\177' |
| 959 | |
| 960 | #define CHAR_SPACE '\040' |
| 961 | #define CHAR_EXCLAMATION_MARK '\041' |
| 962 | #define CHAR_QUOTATION_MARK '\042' |
| 963 | #define CHAR_NUMBER_SIGN '\043' |
| 964 | #define CHAR_DOLLAR_SIGN '\044' |
| 965 | #define CHAR_PERCENT_SIGN '\045' |
| 966 | #define CHAR_AMPERSAND '\046' |
| 967 | #define CHAR_APOSTROPHE '\047' |
| 968 | #define CHAR_LEFT_PARENTHESIS '\050' |
| 969 | #define CHAR_RIGHT_PARENTHESIS '\051' |
| 970 | #define CHAR_ASTERISK '\052' |
| 971 | #define CHAR_PLUS '\053' |
| 972 | #define CHAR_COMMA '\054' |
| 973 | #define CHAR_MINUS '\055' |
| 974 | #define CHAR_DOT '\056' |
| 975 | #define CHAR_SLASH '\057' |
| 976 | #define CHAR_0 '\060' |
| 977 | #define CHAR_1 '\061' |
| 978 | #define CHAR_2 '\062' |
| 979 | #define CHAR_3 '\063' |
| 980 | #define CHAR_4 '\064' |
| 981 | #define CHAR_5 '\065' |
| 982 | #define CHAR_6 '\066' |
| 983 | #define CHAR_7 '\067' |
| 984 | #define CHAR_8 '\070' |
| 985 | #define CHAR_9 '\071' |
| 986 | #define CHAR_COLON '\072' |
| 987 | #define CHAR_SEMICOLON '\073' |
| 988 | #define CHAR_LESS_THAN_SIGN '\074' |
| 989 | #define CHAR_EQUALS_SIGN '\075' |
| 990 | #define CHAR_GREATER_THAN_SIGN '\076' |
| 991 | #define CHAR_QUESTION_MARK '\077' |
| 992 | #define CHAR_COMMERCIAL_AT '\100' |
| 993 | #define CHAR_A '\101' |
| 994 | #define CHAR_B '\102' |
| 995 | #define CHAR_C '\103' |
| 996 | #define CHAR_D '\104' |
| 997 | #define CHAR_E '\105' |
| 998 | #define CHAR_F '\106' |
| 999 | #define CHAR_G '\107' |
| 1000 | #define CHAR_H '\110' |
| 1001 | #define CHAR_I '\111' |
| 1002 | #define CHAR_J '\112' |
| 1003 | #define CHAR_K '\113' |
| 1004 | #define CHAR_L '\114' |
| 1005 | #define CHAR_M '\115' |
| 1006 | #define CHAR_N '\116' |
| 1007 | #define CHAR_O '\117' |
| 1008 | #define CHAR_P '\120' |
| 1009 | #define CHAR_Q '\121' |
| 1010 | #define CHAR_R '\122' |
| 1011 | #define CHAR_S '\123' |
| 1012 | #define CHAR_T '\124' |
| 1013 | #define CHAR_U '\125' |
| 1014 | #define CHAR_V '\126' |
| 1015 | #define CHAR_W '\127' |
| 1016 | #define CHAR_X '\130' |
| 1017 | #define CHAR_Y '\131' |
| 1018 | #define CHAR_Z '\132' |
| 1019 | #define CHAR_LEFT_SQUARE_BRACKET '\133' |
| 1020 | #define CHAR_BACKSLASH '\134' |
| 1021 | #define CHAR_RIGHT_SQUARE_BRACKET '\135' |
| 1022 | #define CHAR_CIRCUMFLEX_ACCENT '\136' |
| 1023 | #define CHAR_UNDERSCORE '\137' |
| 1024 | #define CHAR_GRAVE_ACCENT '\140' |
| 1025 | #define CHAR_a '\141' |
| 1026 | #define CHAR_b '\142' |
| 1027 | #define CHAR_c '\143' |
| 1028 | #define CHAR_d '\144' |
| 1029 | #define CHAR_e '\145' |
| 1030 | #define CHAR_f '\146' |
| 1031 | #define CHAR_g '\147' |
| 1032 | #define CHAR_h '\150' |
| 1033 | #define CHAR_i '\151' |
| 1034 | #define CHAR_j '\152' |
| 1035 | #define CHAR_k '\153' |
| 1036 | #define CHAR_l '\154' |
| 1037 | #define CHAR_m '\155' |
| 1038 | #define CHAR_n '\156' |
| 1039 | #define CHAR_o '\157' |
| 1040 | #define CHAR_p '\160' |
| 1041 | #define CHAR_q '\161' |
| 1042 | #define CHAR_r '\162' |
| 1043 | #define CHAR_s '\163' |
| 1044 | #define CHAR_t '\164' |
| 1045 | #define CHAR_u '\165' |
| 1046 | #define CHAR_v '\166' |
| 1047 | #define CHAR_w '\167' |
| 1048 | #define CHAR_x '\170' |
| 1049 | #define CHAR_y '\171' |
| 1050 | #define CHAR_z '\172' |
| 1051 | #define CHAR_LEFT_CURLY_BRACKET '\173' |
| 1052 | #define CHAR_VERTICAL_LINE '\174' |
| 1053 | #define CHAR_RIGHT_CURLY_BRACKET '\175' |
| 1054 | #define CHAR_TILDE '\176' |
| 1055 | |
| 1056 | #define STR_HT "\011" |
| 1057 | #define STR_VT "\013" |
| 1058 | #define STR_FF "\014" |
| 1059 | #define STR_CR "\015" |
| 1060 | #define STR_NL "\012" |
| 1061 | #define STR_BS "\010" |
| 1062 | #define STR_BEL "\007" |
| 1063 | #define STR_ESC "\033" |
| 1064 | #define STR_DEL "\177" |
| 1065 | |
| 1066 | #define STR_SPACE "\040" |
| 1067 | #define STR_EXCLAMATION_MARK "\041" |
| 1068 | #define STR_QUOTATION_MARK "\042" |
| 1069 | #define STR_NUMBER_SIGN "\043" |
| 1070 | #define STR_DOLLAR_SIGN "\044" |
| 1071 | #define STR_PERCENT_SIGN "\045" |
| 1072 | #define STR_AMPERSAND "\046" |
| 1073 | #define STR_APOSTROPHE "\047" |
| 1074 | #define STR_LEFT_PARENTHESIS "\050" |
| 1075 | #define STR_RIGHT_PARENTHESIS "\051" |
| 1076 | #define STR_ASTERISK "\052" |
| 1077 | #define STR_PLUS "\053" |
| 1078 | #define STR_COMMA "\054" |
| 1079 | #define STR_MINUS "\055" |
| 1080 | #define STR_DOT "\056" |
| 1081 | #define STR_SLASH "\057" |
| 1082 | #define STR_0 "\060" |
| 1083 | #define STR_1 "\061" |
| 1084 | #define STR_2 "\062" |
| 1085 | #define STR_3 "\063" |
| 1086 | #define STR_4 "\064" |
| 1087 | #define STR_5 "\065" |
| 1088 | #define STR_6 "\066" |
| 1089 | #define STR_7 "\067" |
| 1090 | #define STR_8 "\070" |
| 1091 | #define STR_9 "\071" |
| 1092 | #define STR_COLON "\072" |
| 1093 | #define STR_SEMICOLON "\073" |
| 1094 | #define STR_LESS_THAN_SIGN "\074" |
| 1095 | #define STR_EQUALS_SIGN "\075" |
| 1096 | #define STR_GREATER_THAN_SIGN "\076" |
| 1097 | #define STR_QUESTION_MARK "\077" |
| 1098 | #define STR_COMMERCIAL_AT "\100" |
| 1099 | #define STR_A "\101" |
| 1100 | #define STR_B "\102" |
| 1101 | #define STR_C "\103" |
| 1102 | #define STR_D "\104" |
| 1103 | #define STR_E "\105" |
| 1104 | #define STR_F "\106" |
| 1105 | #define STR_G "\107" |
| 1106 | #define STR_H "\110" |
| 1107 | #define STR_I "\111" |
| 1108 | #define STR_J "\112" |
| 1109 | #define STR_K "\113" |
| 1110 | #define STR_L "\114" |
| 1111 | #define STR_M "\115" |
| 1112 | #define STR_N "\116" |
| 1113 | #define STR_O "\117" |
| 1114 | #define STR_P "\120" |
| 1115 | #define STR_Q "\121" |
| 1116 | #define STR_R "\122" |
| 1117 | #define STR_S "\123" |
| 1118 | #define STR_T "\124" |
| 1119 | #define STR_U "\125" |
| 1120 | #define STR_V "\126" |
| 1121 | #define STR_W "\127" |
| 1122 | #define STR_X "\130" |
| 1123 | #define STR_Y "\131" |
| 1124 | #define STR_Z "\132" |
| 1125 | #define STR_LEFT_SQUARE_BRACKET "\133" |
| 1126 | #define STR_BACKSLASH "\134" |
| 1127 | #define STR_RIGHT_SQUARE_BRACKET "\135" |
| 1128 | #define STR_CIRCUMFLEX_ACCENT "\136" |
| 1129 | #define STR_UNDERSCORE "\137" |
| 1130 | #define STR_GRAVE_ACCENT "\140" |
| 1131 | #define STR_a "\141" |
| 1132 | #define STR_b "\142" |
| 1133 | #define STR_c "\143" |
| 1134 | #define STR_d "\144" |
| 1135 | #define STR_e "\145" |
| 1136 | #define STR_f "\146" |
| 1137 | #define STR_g "\147" |
| 1138 | #define STR_h "\150" |
| 1139 | #define STR_i "\151" |
| 1140 | #define STR_j "\152" |
| 1141 | #define STR_k "\153" |
| 1142 | #define STR_l "\154" |
| 1143 | #define STR_m "\155" |
| 1144 | #define STR_n "\156" |
| 1145 | #define STR_o "\157" |
| 1146 | #define STR_p "\160" |
| 1147 | #define STR_q "\161" |
| 1148 | #define STR_r "\162" |
| 1149 | #define STR_s "\163" |
| 1150 | #define STR_t "\164" |
| 1151 | #define STR_u "\165" |
| 1152 | #define STR_v "\166" |
| 1153 | #define STR_w "\167" |
| 1154 | #define STR_x "\170" |
| 1155 | #define STR_y "\171" |
| 1156 | #define STR_z "\172" |
| 1157 | #define STR_LEFT_CURLY_BRACKET "\173" |
| 1158 | #define STR_VERTICAL_LINE "\174" |
| 1159 | #define STR_RIGHT_CURLY_BRACKET "\175" |
| 1160 | #define STR_TILDE "\176" |
| 1161 | |
| 1162 | #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0" |
| 1163 | #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0" |
| 1164 | #define STRING_F0 STR_F "\0" |
| 1165 | #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0" |
| 1166 | #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0" |
| 1167 | #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0" |
| 1168 | #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0" |
| 1169 | #define STRING_THEN STR_T STR_H STR_E STR_N |
| 1170 | |
| 1171 | #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0" |
| 1172 | #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0" |
| 1173 | #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0" |
| 1174 | #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0" |
| 1175 | #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0" |
| 1176 | #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0" |
| 1177 | #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0" |
| 1178 | #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0" |
| 1179 | #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0" |
| 1180 | #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0" |
| 1181 | #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0" |
| 1182 | #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0" |
| 1183 | #define STRING_word0 STR_w STR_o STR_r STR_d "\0" |
| 1184 | #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t |
| 1185 | |
| 1186 | #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E |
| 1187 | |
| 1188 | #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS |
| 1189 | #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS |
| 1190 | #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS |
| 1191 | #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS |
| 1192 | #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS |
| 1193 | #define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS |
| 1194 | #define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS |
| 1195 | #define STRING_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS |
| 1196 | #define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS |
| 1197 | #define STRING_NO_START_OPT_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS |
| 1198 | |
| 1199 | #endif /* SUPPORT_UTF8 */ |
| 1200 | |
| 1201 | /* Escape items that are just an encoding of a particular data value. */ |
| 1202 | |
| 1203 | #ifndef ESC_e |
| 1204 | #define ESC_e CHAR_ESC |
| 1205 | #endif |
| 1206 | |
| 1207 | #ifndef ESC_f |
| 1208 | #define ESC_f CHAR_FF |
| 1209 | #endif |
| 1210 | |
| 1211 | #ifndef ESC_n |
| 1212 | #define ESC_n CHAR_NL |
| 1213 | #endif |
| 1214 | |
| 1215 | #ifndef ESC_r |
| 1216 | #define ESC_r CHAR_CR |
| 1217 | #endif |
| 1218 | |
| 1219 | /* We can't officially use ESC_t because it is a POSIX reserved identifier |
| 1220 | (presumably because of all the others like size_t). */ |
| 1221 | |
| 1222 | #ifndef ESC_tee |
| 1223 | #define ESC_tee CHAR_HT |
| 1224 | #endif |
| 1225 | |
| 1226 | /* Codes for different types of Unicode property */ |
| 1227 | |
| 1228 | #define PT_ANY 0 /* Any property - matches all chars */ |
| 1229 | #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */ |
| 1230 | #define PT_GC 2 /* Specified general characteristic (e.g. L) */ |
| 1231 | #define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */ |
| 1232 | #define PT_SC 4 /* Script (e.g. Han) */ |
| 1233 | #define PT_ALNUM 5 /* Alphanumeric - the union of L and N */ |
| 1234 | #define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */ |
| 1235 | #define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */ |
| 1236 | #define PT_WORD 8 /* Word - L plus N plus underscore */ |
| 1237 | |
| 1238 | /* Flag bits and data types for the extended class (OP_XCLASS) for classes that |
| 1239 | contain UTF-8 characters with values greater than 255. */ |
| 1240 | |
| 1241 | #define XCL_NOT 0x01 /* Flag: this is a negative class */ |
| 1242 | #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */ |
| 1243 | |
| 1244 | #define XCL_END 0 /* Marks end of individual items */ |
| 1245 | #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */ |
| 1246 | #define XCL_RANGE 2 /* A range (two multibyte chars) follows */ |
| 1247 | #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */ |
| 1248 | #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */ |
| 1249 | |
| 1250 | /* These are escaped items that aren't just an encoding of a particular data |
| 1251 | value such as \n. They must have non-zero values, as check_escape() returns |
| 1252 | their negation. Also, they must appear in the same order as in the opcode |
| 1253 | definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it |
| 1254 | corresponds to "." in DOTALL mode rather than an escape sequence. It is also |
| 1255 | used for [^] in JavaScript compatibility mode, and for \C in non-utf8 mode. In |
| 1256 | non-DOTALL mode, "." behaves like \N. |
| 1257 | |
| 1258 | The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc. |
| 1259 | when PCRE_UCP is set, when replacement of \d etc by \p sequences is required. |
| 1260 | They must be contiguous, and remain in order so that the replacements can be |
| 1261 | looked up from a table. |
| 1262 | |
| 1263 | The final escape must be ESC_REF as subsequent values are used for |
| 1264 | backreferences (\1, \2, \3, etc). There are two tests in the code for an escape |
| 1265 | greater than ESC_b and less than ESC_Z to detect the types that may be |
| 1266 | repeated. These are the types that consume characters. If any new escapes are |
| 1267 | put in between that don't consume a character, that code will have to change. |
| 1268 | */ |
| 1269 | |
| 1270 | enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s, |
| 1271 | ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, |
| 1272 | ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, |
| 1273 | ESC_E, ESC_Q, ESC_g, ESC_k, |
| 1274 | ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu, |
| 1275 | ESC_REF }; |
| 1276 | |
| 1277 | /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to |
| 1278 | OP_EOD must correspond in order to the list of escapes immediately above. |
| 1279 | |
| 1280 | *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions |
| 1281 | that follow must also be updated to match. There are also tables called |
| 1282 | "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */ |
| 1283 | |
| 1284 | enum { |
| 1285 | OP_END, /* 0 End of pattern */ |
| 1286 | |
| 1287 | /* Values corresponding to backslashed metacharacters */ |
| 1288 | |
| 1289 | OP_SOD, /* 1 Start of data: \A */ |
| 1290 | OP_SOM, /* 2 Start of match (subject + offset): \G */ |
| 1291 | OP_SET_SOM, /* 3 Set start of match (\K) */ |
| 1292 | OP_NOT_WORD_BOUNDARY, /* 4 \B */ |
| 1293 | OP_WORD_BOUNDARY, /* 5 \b */ |
| 1294 | OP_NOT_DIGIT, /* 6 \D */ |
| 1295 | OP_DIGIT, /* 7 \d */ |
| 1296 | OP_NOT_WHITESPACE, /* 8 \S */ |
| 1297 | OP_WHITESPACE, /* 9 \s */ |
| 1298 | OP_NOT_WORDCHAR, /* 10 \W */ |
| 1299 | OP_WORDCHAR, /* 11 \w */ |
| 1300 | |
| 1301 | OP_ANY, /* 12 Match any character except newline */ |
| 1302 | OP_ALLANY, /* 13 Match any character */ |
| 1303 | OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */ |
| 1304 | OP_NOTPROP, /* 15 \P (not Unicode property) */ |
| 1305 | OP_PROP, /* 16 \p (Unicode property) */ |
| 1306 | OP_ANYNL, /* 17 \R (any newline sequence) */ |
| 1307 | OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */ |
| 1308 | OP_HSPACE, /* 19 \h (horizontal whitespace) */ |
| 1309 | OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */ |
| 1310 | OP_VSPACE, /* 21 \v (vertical whitespace) */ |
| 1311 | OP_EXTUNI, /* 22 \X (extended Unicode sequence */ |
| 1312 | OP_EODN, /* 23 End of data or \n at end of data: \Z. */ |
| 1313 | OP_EOD, /* 24 End of data: \z */ |
| 1314 | |
| 1315 | OP_CIRC, /* 25 Start of line - not multiline */ |
| 1316 | OP_CIRCM, /* 26 Start of line - multiline */ |
| 1317 | OP_DOLL, /* 27 End of line - not multiline */ |
| 1318 | OP_DOLLM, /* 28 End of line - multiline */ |
| 1319 | OP_CHAR, /* 29 Match one character, casefully */ |
| 1320 | OP_CHARI, /* 30 Match one character, caselessly */ |
| 1321 | OP_NOT, /* 31 Match one character, not the given one, casefully */ |
| 1322 | OP_NOTI, /* 32 Match one character, not the given one, caselessly */ |
| 1323 | |
| 1324 | /* The following sets of 13 opcodes must always be kept in step because |
| 1325 | the offset from the first one is used to generate the others. */ |
| 1326 | |
| 1327 | /**** Single characters, caseful, must precede the caseless ones ****/ |
| 1328 | |
| 1329 | OP_STAR, /* 33 The maximizing and minimizing versions of */ |
| 1330 | OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */ |
| 1331 | OP_PLUS, /* 35 the minimizing one second. */ |
| 1332 | OP_MINPLUS, /* 36 */ |
| 1333 | OP_QUERY, /* 37 */ |
| 1334 | OP_MINQUERY, /* 38 */ |
| 1335 | |
| 1336 | OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/ |
| 1337 | OP_MINUPTO, /* 40 */ |
| 1338 | OP_EXACT, /* 41 Exactly n matches */ |
| 1339 | |
| 1340 | OP_POSSTAR, /* 42 Possessified star, caseful */ |
| 1341 | OP_POSPLUS, /* 43 Possessified plus, caseful */ |
| 1342 | OP_POSQUERY, /* 44 Posesssified query, caseful */ |
| 1343 | OP_POSUPTO, /* 45 Possessified upto, caseful */ |
| 1344 | |
| 1345 | /**** Single characters, caseless, must follow the caseful ones */ |
| 1346 | |
| 1347 | OP_STARI, /* 46 */ |
| 1348 | OP_MINSTARI, /* 47 */ |
| 1349 | OP_PLUSI, /* 48 */ |
| 1350 | OP_MINPLUSI, /* 49 */ |
| 1351 | OP_QUERYI, /* 50 */ |
| 1352 | OP_MINQUERYI, /* 51 */ |
| 1353 | |
| 1354 | OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */ |
| 1355 | OP_MINUPTOI, /* 53 */ |
| 1356 | OP_EXACTI, /* 54 */ |
| 1357 | |
| 1358 | OP_POSSTARI, /* 55 Possessified star, caseless */ |
| 1359 | OP_POSPLUSI, /* 56 Possessified plus, caseless */ |
| 1360 | OP_POSQUERYI, /* 57 Posesssified query, caseless */ |
| 1361 | OP_POSUPTOI, /* 58 Possessified upto, caseless */ |
| 1362 | |
| 1363 | /**** The negated ones must follow the non-negated ones, and match them ****/ |
| 1364 | /**** Negated single character, caseful; must precede the caseless ones ****/ |
| 1365 | |
| 1366 | OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */ |
| 1367 | OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */ |
| 1368 | OP_NOTPLUS, /* 61 the minimizing one second. They must be in */ |
| 1369 | OP_NOTMINPLUS, /* 62 exactly the same order as those above. */ |
| 1370 | OP_NOTQUERY, /* 63 */ |
| 1371 | OP_NOTMINQUERY, /* 64 */ |
| 1372 | |
| 1373 | OP_NOTUPTO, /* 65 From 0 to n matches, caseful */ |
| 1374 | OP_NOTMINUPTO, /* 66 */ |
| 1375 | OP_NOTEXACT, /* 67 Exactly n matches */ |
| 1376 | |
| 1377 | OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */ |
| 1378 | OP_NOTPOSPLUS, /* 69 */ |
| 1379 | OP_NOTPOSQUERY, /* 70 */ |
| 1380 | OP_NOTPOSUPTO, /* 71 */ |
| 1381 | |
| 1382 | /**** Negated single character, caseless; must follow the caseful ones ****/ |
| 1383 | |
| 1384 | OP_NOTSTARI, /* 72 */ |
| 1385 | OP_NOTMINSTARI, /* 73 */ |
| 1386 | OP_NOTPLUSI, /* 74 */ |
| 1387 | OP_NOTMINPLUSI, /* 75 */ |
| 1388 | OP_NOTQUERYI, /* 76 */ |
| 1389 | OP_NOTMINQUERYI, /* 77 */ |
| 1390 | |
| 1391 | OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */ |
| 1392 | OP_NOTMINUPTOI, /* 79 */ |
| 1393 | OP_NOTEXACTI, /* 80 Exactly n matches */ |
| 1394 | |
| 1395 | OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */ |
| 1396 | OP_NOTPOSPLUSI, /* 82 */ |
| 1397 | OP_NOTPOSQUERYI, /* 83 */ |
| 1398 | OP_NOTPOSUPTOI, /* 84 */ |
| 1399 | |
| 1400 | /**** Character types ****/ |
| 1401 | |
| 1402 | OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */ |
| 1403 | OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */ |
| 1404 | OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */ |
| 1405 | OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */ |
| 1406 | OP_TYPEQUERY, /* 89 */ |
| 1407 | OP_TYPEMINQUERY, /* 90 */ |
| 1408 | |
| 1409 | OP_TYPEUPTO, /* 91 From 0 to n matches */ |
| 1410 | OP_TYPEMINUPTO, /* 92 */ |
| 1411 | OP_TYPEEXACT, /* 93 Exactly n matches */ |
| 1412 | |
| 1413 | OP_TYPEPOSSTAR, /* 94 Possessified versions */ |
| 1414 | OP_TYPEPOSPLUS, /* 95 */ |
| 1415 | OP_TYPEPOSQUERY, /* 96 */ |
| 1416 | OP_TYPEPOSUPTO, /* 97 */ |
| 1417 | |
| 1418 | /* These are used for character classes and back references; only the |
| 1419 | first six are the same as the sets above. */ |
| 1420 | |
| 1421 | OP_CRSTAR, /* 98 The maximizing and minimizing versions of */ |
| 1422 | OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */ |
| 1423 | OP_CRPLUS, /* 100 the minimizing one second. These codes must */ |
| 1424 | OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */ |
| 1425 | OP_CRQUERY, /* 102 */ |
| 1426 | OP_CRMINQUERY, /* 103 */ |
| 1427 | |
| 1428 | OP_CRRANGE, /* 104 These are different to the three sets above. */ |
| 1429 | OP_CRMINRANGE, /* 105 */ |
| 1430 | |
| 1431 | /* End of quantifier opcodes */ |
| 1432 | |
| 1433 | OP_CLASS, /* 106 Match a character class, chars < 256 only */ |
| 1434 | OP_NCLASS, /* 107 Same, but the bitmap was created from a negative |
| 1435 | class - the difference is relevant only when a |
| 1436 | UTF-8 character > 255 is encountered. */ |
| 1437 | OP_XCLASS, /* 108 Extended class for handling UTF-8 chars within the |
| 1438 | class. This does both positive and negative. */ |
| 1439 | OP_REF, /* 109 Match a back reference, casefully */ |
| 1440 | OP_REFI, /* 110 Match a back reference, caselessly */ |
| 1441 | OP_RECURSE, /* 111 Match a numbered subpattern (possibly recursive) */ |
| 1442 | OP_CALLOUT, /* 112 Call out to external function if provided */ |
| 1443 | |
| 1444 | OP_ALT, /* 113 Start of alternation */ |
| 1445 | OP_KET, /* 114 End of group that doesn't have an unbounded repeat */ |
| 1446 | OP_KETRMAX, /* 115 These two must remain together and in this */ |
| 1447 | OP_KETRMIN, /* 116 order. They are for groups the repeat for ever. */ |
| 1448 | OP_KETRPOS, /* 117 Possessive unlimited repeat. */ |
| 1449 | |
| 1450 | /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four |
| 1451 | asserts must remain in order. */ |
| 1452 | |
| 1453 | OP_REVERSE, /* 118 Move pointer back - used in lookbehind assertions */ |
| 1454 | OP_ASSERT, /* 119 Positive lookahead */ |
| 1455 | OP_ASSERT_NOT, /* 120 Negative lookahead */ |
| 1456 | OP_ASSERTBACK, /* 121 Positive lookbehind */ |
| 1457 | OP_ASSERTBACK_NOT, /* 122 Negative lookbehind */ |
| 1458 | |
| 1459 | /* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately |
| 1460 | after the assertions, with ONCE first, as there's a test for >= ONCE for a |
| 1461 | subpattern that isn't an assertion. The POS versions must immediately follow |
| 1462 | the non-POS versions in each case. */ |
| 1463 | |
| 1464 | OP_ONCE, /* 123 Atomic group, contains captures */ |
| 1465 | OP_ONCE_NC, /* 124 Atomic group containing no captures */ |
| 1466 | OP_BRA, /* 125 Start of non-capturing bracket */ |
| 1467 | OP_BRAPOS, /* 126 Ditto, with unlimited, possessive repeat */ |
| 1468 | OP_CBRA, /* 127 Start of capturing bracket */ |
| 1469 | OP_CBRAPOS, /* 128 Ditto, with unlimited, possessive repeat */ |
| 1470 | OP_COND, /* 129 Conditional group */ |
| 1471 | |
| 1472 | /* These five must follow the previous five, in the same order. There's a |
| 1473 | check for >= SBRA to distinguish the two sets. */ |
| 1474 | |
| 1475 | OP_SBRA, /* 130 Start of non-capturing bracket, check empty */ |
| 1476 | OP_SBRAPOS, /* 131 Ditto, with unlimited, possessive repeat */ |
| 1477 | OP_SCBRA, /* 132 Start of capturing bracket, check empty */ |
| 1478 | OP_SCBRAPOS, /* 133 Ditto, with unlimited, possessive repeat */ |
| 1479 | OP_SCOND, /* 134 Conditional group, check empty */ |
| 1480 | |
| 1481 | /* The next two pairs must (respectively) be kept together. */ |
| 1482 | |
| 1483 | OP_CREF, /* 135 Used to hold a capture number as condition */ |
| 1484 | OP_NCREF, /* 136 Same, but generated by a name reference*/ |
| 1485 | OP_RREF, /* 137 Used to hold a recursion number as condition */ |
| 1486 | OP_NRREF, /* 138 Same, but generated by a name reference*/ |
| 1487 | OP_DEF, /* 139 The DEFINE condition */ |
| 1488 | |
| 1489 | OP_BRAZERO, /* 140 These two must remain together and in this */ |
| 1490 | OP_BRAMINZERO, /* 141 order. */ |
| 1491 | OP_BRAPOSZERO, /* 142 */ |
| 1492 | |
| 1493 | /* These are backtracking control verbs */ |
| 1494 | |
| 1495 | OP_MARK, /* 143 always has an argument */ |
| 1496 | OP_PRUNE, /* 144 */ |
| 1497 | OP_PRUNE_ARG, /* 145 same, but with argument */ |
| 1498 | OP_SKIP, /* 146 */ |
| 1499 | OP_SKIP_ARG, /* 147 same, but with argument */ |
| 1500 | OP_THEN, /* 148 */ |
| 1501 | OP_THEN_ARG, /* 149 same, but with argument */ |
| 1502 | OP_COMMIT, /* 150 */ |
| 1503 | |
| 1504 | /* These are forced failure and success verbs */ |
| 1505 | |
| 1506 | OP_FAIL, /* 151 */ |
| 1507 | OP_ACCEPT, /* 152 */ |
| 1508 | OP_ASSERT_ACCEPT, /* 153 Used inside assertions */ |
| 1509 | OP_CLOSE, /* 154 Used before OP_ACCEPT to close open captures */ |
| 1510 | |
| 1511 | /* This is used to skip a subpattern with a {0} quantifier */ |
| 1512 | |
| 1513 | OP_SKIPZERO, /* 155 */ |
| 1514 | |
| 1515 | /* This is not an opcode, but is used to check that tables indexed by opcode |
| 1516 | are the correct length, in order to catch updating errors - there have been |
| 1517 | some in the past. */ |
| 1518 | |
| 1519 | OP_TABLE_LENGTH |
| 1520 | }; |
| 1521 | |
| 1522 | /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro |
| 1523 | definitions that follow must also be updated to match. There are also tables |
| 1524 | called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */ |
| 1525 | |
| 1526 | |
| 1527 | /* This macro defines textual names for all the opcodes. These are used only |
| 1528 | for debugging, and some of them are only partial names. The macro is referenced |
| 1529 | only in pcre_printint.c, which fills out the full names in many cases (and in |
| 1530 | some cases doesn't actually use these names at all). */ |
| 1531 | |
| 1532 | #define OP_NAME_LIST \ |
| 1533 | "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \ |
| 1534 | "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \ |
| 1535 | "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \ |
| 1536 | "extuni", "\\Z", "\\z", \ |
| 1537 | "^", "^", "$", "$", "char", "chari", "not", "noti", \ |
| 1538 | "*", "*?", "+", "+?", "?", "??", \ |
| 1539 | "{", "{", "{", \ |
| 1540 | "*+","++", "?+", "{", \ |
| 1541 | "*", "*?", "+", "+?", "?", "??", \ |
| 1542 | "{", "{", "{", \ |
| 1543 | "*+","++", "?+", "{", \ |
| 1544 | "*", "*?", "+", "+?", "?", "??", \ |
| 1545 | "{", "{", "{", \ |
| 1546 | "*+","++", "?+", "{", \ |
| 1547 | "*", "*?", "+", "+?", "?", "??", \ |
| 1548 | "{", "{", "{", \ |
| 1549 | "*+","++", "?+", "{", \ |
| 1550 | "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \ |
| 1551 | "*+","++", "?+", "{", \ |
| 1552 | "*", "*?", "+", "+?", "?", "??", "{", "{", \ |
| 1553 | "class", "nclass", "xclass", "Ref", "Refi", \ |
| 1554 | "Recurse", "Callout", \ |
| 1555 | "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \ |
| 1556 | "Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \ |
| 1557 | "Once", "Once_NC", \ |
| 1558 | "Bra", "BraPos", "CBra", "CBraPos", \ |
| 1559 | "Cond", \ |
| 1560 | "SBra", "SBraPos", "SCBra", "SCBraPos", \ |
| 1561 | "SCond", \ |
| 1562 | "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \ |
| 1563 | "Brazero", "Braminzero", "Braposzero", \ |
| 1564 | "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \ |
| 1565 | "*THEN", "*THEN", "*COMMIT", "*FAIL", \ |
| 1566 | "*ACCEPT", "*ASSERT_ACCEPT", \ |
| 1567 | "Close", "Skip zero" |
| 1568 | |
| 1569 | |
| 1570 | /* This macro defines the length of fixed length operations in the compiled |
| 1571 | regex. The lengths are used when searching for specific things, and also in the |
| 1572 | debugging printing of a compiled regex. We use a macro so that it can be |
| 1573 | defined close to the definitions of the opcodes themselves. |
| 1574 | |
| 1575 | As things have been extended, some of these are no longer fixed lenths, but are |
| 1576 | minima instead. For example, the length of a single-character repeat may vary |
| 1577 | in UTF-8 mode. The code that uses this table must know about such things. */ |
| 1578 | |
| 1579 | #define OP_LENGTHS \ |
| 1580 | 1, /* End */ \ |
| 1581 | 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \ |
| 1582 | 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \ |
| 1583 | 1, 1, 1, /* Any, AllAny, Anybyte */ \ |
| 1584 | 3, 3, /* \P, \p */ \ |
| 1585 | 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \ |
| 1586 | 1, /* \X */ \ |
| 1587 | 1, 1, 1, 1, 1, 1, /* \Z, \z, ^, ^M, $, $M */ \ |
| 1588 | 2, /* Char - the minimum length */ \ |
| 1589 | 2, /* Chari - the minimum length */ \ |
| 1590 | 2, /* not */ \ |
| 1591 | 2, /* noti */ \ |
| 1592 | /* Positive single-char repeats ** These are */ \ |
| 1593 | 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \ |
| 1594 | 4, 4, 4, /* upto, minupto, exact ** mode */ \ |
| 1595 | 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \ |
| 1596 | 2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \ |
| 1597 | 4, 4, 4, /* upto I, minupto I, exact I */ \ |
| 1598 | 2, 2, 2, 4, /* *+I, ++I, ?+I, upto+I */ \ |
| 1599 | /* Negative single-char repeats - only for chars < 256 */ \ |
| 1600 | 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \ |
| 1601 | 4, 4, 4, /* NOT upto, minupto, exact */ \ |
| 1602 | 2, 2, 2, 4, /* Possessive NOT *, +, ?, upto */ \ |
| 1603 | 2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \ |
| 1604 | 4, 4, 4, /* NOT upto I, minupto I, exact I */ \ |
| 1605 | 2, 2, 2, 4, /* Possessive NOT *I, +I, ?I, upto I */ \ |
| 1606 | /* Positive type repeats */ \ |
| 1607 | 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \ |
| 1608 | 4, 4, 4, /* Type upto, minupto, exact */ \ |
| 1609 | 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \ |
| 1610 | /* Character class & ref repeats */ \ |
| 1611 | 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \ |
| 1612 | 5, 5, /* CRRANGE, CRMINRANGE */ \ |
| 1613 | 33, /* CLASS */ \ |
| 1614 | 33, /* NCLASS */ \ |
| 1615 | 0, /* XCLASS - variable length */ \ |
| 1616 | 3, /* REF */ \ |
| 1617 | 3, /* REFI */ \ |
| 1618 | 1+LINK_SIZE, /* RECURSE */ \ |
| 1619 | 2+2*LINK_SIZE, /* CALLOUT */ \ |
| 1620 | 1+LINK_SIZE, /* Alt */ \ |
| 1621 | 1+LINK_SIZE, /* Ket */ \ |
| 1622 | 1+LINK_SIZE, /* KetRmax */ \ |
| 1623 | 1+LINK_SIZE, /* KetRmin */ \ |
| 1624 | 1+LINK_SIZE, /* KetRpos */ \ |
| 1625 | 1+LINK_SIZE, /* Reverse */ \ |
| 1626 | 1+LINK_SIZE, /* Assert */ \ |
| 1627 | 1+LINK_SIZE, /* Assert not */ \ |
| 1628 | 1+LINK_SIZE, /* Assert behind */ \ |
| 1629 | 1+LINK_SIZE, /* Assert behind not */ \ |
| 1630 | 1+LINK_SIZE, /* ONCE */ \ |
| 1631 | 1+LINK_SIZE, /* ONCE_NC */ \ |
| 1632 | 1+LINK_SIZE, /* BRA */ \ |
| 1633 | 1+LINK_SIZE, /* BRAPOS */ \ |
| 1634 | 3+LINK_SIZE, /* CBRA */ \ |
| 1635 | 3+LINK_SIZE, /* CBRAPOS */ \ |
| 1636 | 1+LINK_SIZE, /* COND */ \ |
| 1637 | 1+LINK_SIZE, /* SBRA */ \ |
| 1638 | 1+LINK_SIZE, /* SBRAPOS */ \ |
| 1639 | 3+LINK_SIZE, /* SCBRA */ \ |
| 1640 | 3+LINK_SIZE, /* SCBRAPOS */ \ |
| 1641 | 1+LINK_SIZE, /* SCOND */ \ |
| 1642 | 3, 3, /* CREF, NCREF */ \ |
| 1643 | 3, 3, /* RREF, NRREF */ \ |
| 1644 | 1, /* DEF */ \ |
| 1645 | 1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \ |
| 1646 | 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \ |
| 1647 | 1, 3, /* SKIP, SKIP_ARG */ \ |
| 1648 | 1, 3, /* THEN, THEN_ARG */ \ |
| 1649 | 1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \ |
| 1650 | 3, 1 /* CLOSE, SKIPZERO */ |
| 1651 | |
| 1652 | /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion" |
| 1653 | condition. */ |
| 1654 | |
| 1655 | #define RREF_ANY 0xffff |
| 1656 | |
| 1657 | /* Compile time error code numbers. They are given names so that they can more |
| 1658 | easily be tracked. When a new number is added, the table called eint in |
| 1659 | pcreposix.c must be updated. */ |
| 1660 | |
| 1661 | enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9, |
| 1662 | ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19, |
| 1663 | ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29, |
| 1664 | ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39, |
| 1665 | ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49, |
| 1666 | ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59, |
| 1667 | ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69, |
| 1668 | ERR70, ERR71, ERR72, ERRCOUNT }; |
| 1669 | |
| 1670 | /* The real format of the start of the pcre block; the index of names and the |
| 1671 | code vector run on as long as necessary after the end. We store an explicit |
| 1672 | offset to the name table so that if a regex is compiled on one host, saved, and |
| 1673 | then run on another where the size of pointers is different, all might still |
| 1674 | be well. For the case of compiled-on-4 and run-on-8, we include an extra |
| 1675 | pointer that is always NULL. For future-proofing, a few dummy fields were |
| 1676 | originally included - even though you can never get this planning right - but |
| 1677 | there is only one left now. |
| 1678 | |
| 1679 | NOTE NOTE NOTE: |
| 1680 | Because people can now save and re-use compiled patterns, any additions to this |
| 1681 | structure should be made at the end, and something earlier (e.g. a new |
| 1682 | flag in the options or one of the dummy fields) should indicate that the new |
| 1683 | fields are present. Currently PCRE always sets the dummy fields to zero. |
| 1684 | NOTE NOTE NOTE |
| 1685 | */ |
| 1686 | |
| 1687 | typedef struct real_pcre { |
| 1688 | pcre_uint32 magic_number; |
| 1689 | pcre_uint32 size; /* Total that was malloced */ |
| 1690 | pcre_uint32 options; /* Public options */ |
| 1691 | pcre_uint16 flags; /* Private flags */ |
| 1692 | pcre_uint16 dummy1; /* For future use */ |
| 1693 | pcre_uint16 top_bracket; |
| 1694 | pcre_uint16 top_backref; |
| 1695 | pcre_uint16 first_byte; |
| 1696 | pcre_uint16 req_byte; |
| 1697 | pcre_uint16 name_table_offset; /* Offset to name table that follows */ |
| 1698 | pcre_uint16 name_entry_size; /* Size of any name items */ |
| 1699 | pcre_uint16 name_count; /* Number of name items */ |
| 1700 | pcre_uint16 ref_count; /* Reference count */ |
| 1701 | |
| 1702 | const unsigned char *tables; /* Pointer to tables or NULL for std */ |
| 1703 | const unsigned char *nullpad; /* NULL padding */ |
| 1704 | } real_pcre; |
| 1705 | |
| 1706 | /* The format of the block used to store data from pcre_study(). The same |
| 1707 | remark (see NOTE above) about extending this structure applies. */ |
| 1708 | |
| 1709 | typedef struct pcre_study_data { |
| 1710 | pcre_uint32 size; /* Total that was malloced */ |
| 1711 | pcre_uint32 flags; /* Private flags */ |
| 1712 | uschar start_bits[32]; /* Starting char bits */ |
| 1713 | pcre_uint32 minlength; /* Minimum subject length */ |
| 1714 | } pcre_study_data; |
| 1715 | |
| 1716 | /* Structure for building a chain of open capturing subpatterns during |
| 1717 | compiling, so that instructions to close them can be compiled when (*ACCEPT) is |
| 1718 | encountered. This is also used to identify subpatterns that contain recursive |
| 1719 | back references to themselves, so that they can be made atomic. */ |
| 1720 | |
| 1721 | typedef struct open_capitem { |
| 1722 | struct open_capitem *next; /* Chain link */ |
| 1723 | pcre_uint16 number; /* Capture number */ |
| 1724 | pcre_uint16 flag; /* Set TRUE if recursive back ref */ |
| 1725 | } open_capitem; |
| 1726 | |
| 1727 | /* Structure for passing "static" information around between the functions |
| 1728 | doing the compiling, so that they are thread-safe. */ |
| 1729 | |
| 1730 | typedef struct compile_data { |
| 1731 | const uschar *lcc; /* Points to lower casing table */ |
| 1732 | const uschar *fcc; /* Points to case-flipping table */ |
| 1733 | const uschar *cbits; /* Points to character type table */ |
| 1734 | const uschar *ctypes; /* Points to table of type maps */ |
| 1735 | const uschar *start_workspace;/* The start of working space */ |
| 1736 | const uschar *start_code; /* The start of the compiled code */ |
| 1737 | const uschar *start_pattern; /* The start of the pattern */ |
| 1738 | const uschar *end_pattern; /* The end of the pattern */ |
| 1739 | open_capitem *open_caps; /* Chain of open capture items */ |
| 1740 | uschar *hwm; /* High watermark of workspace */ |
| 1741 | uschar *name_table; /* The name/number table */ |
| 1742 | int names_found; /* Number of entries so far */ |
| 1743 | int name_entry_size; /* Size of each entry */ |
| 1744 | int workspace_size; /* Size of workspace */ |
| 1745 | int bracount; /* Count of capturing parens as we compile */ |
| 1746 | int final_bracount; /* Saved value after first pass */ |
| 1747 | int top_backref; /* Maximum back reference */ |
| 1748 | unsigned int backref_map; /* Bitmap of low back refs */ |
| 1749 | int assert_depth; /* Depth of nested assertions */ |
| 1750 | int external_options; /* External (initial) options */ |
| 1751 | int external_flags; /* External flag bits to be set */ |
| 1752 | int req_varyopt; /* "After variable item" flag for reqbyte */ |
| 1753 | BOOL had_accept; /* (*ACCEPT) encountered */ |
| 1754 | BOOL check_lookbehind; /* Lookbehinds need later checking */ |
| 1755 | int nltype; /* Newline type */ |
| 1756 | int nllen; /* Newline string length */ |
| 1757 | uschar nl[4]; /* Newline string when fixed length */ |
| 1758 | } compile_data; |
| 1759 | |
| 1760 | /* Structure for maintaining a chain of pointers to the currently incomplete |
| 1761 | branches, for testing for left recursion while compiling. */ |
| 1762 | |
| 1763 | typedef struct branch_chain { |
| 1764 | struct branch_chain *outer; |
| 1765 | uschar *current_branch; |
| 1766 | } branch_chain; |
| 1767 | |
| 1768 | /* Structure for items in a linked list that represents an explicit recursive |
| 1769 | call within the pattern; used by pcre_exec(). */ |
| 1770 | |
| 1771 | typedef struct recursion_info { |
| 1772 | struct recursion_info *prevrec; /* Previous recursion record (or NULL) */ |
| 1773 | int group_num; /* Number of group that was called */ |
| 1774 | int *offset_save; /* Pointer to start of saved offsets */ |
| 1775 | int saved_max; /* Number of saved offsets */ |
| 1776 | USPTR subject_position; /* Position at start of recursion */ |
| 1777 | } recursion_info; |
| 1778 | |
| 1779 | /* A similar structure for pcre_dfa_exec(). */ |
| 1780 | |
| 1781 | typedef struct dfa_recursion_info { |
| 1782 | struct dfa_recursion_info *prevrec; |
| 1783 | int group_num; |
| 1784 | USPTR subject_position; |
| 1785 | } dfa_recursion_info; |
| 1786 | |
| 1787 | /* Structure for building a chain of data for holding the values of the subject |
| 1788 | pointer at the start of each subpattern, so as to detect when an empty string |
| 1789 | has been matched by a subpattern - to break infinite loops; used by |
| 1790 | pcre_exec(). */ |
| 1791 | |
| 1792 | typedef struct eptrblock { |
| 1793 | struct eptrblock *epb_prev; |
| 1794 | USPTR epb_saved_eptr; |
| 1795 | } eptrblock; |
| 1796 | |
| 1797 | |
| 1798 | /* Structure for passing "static" information around between the functions |
| 1799 | doing traditional NFA matching, so that they are thread-safe. */ |
| 1800 | |
| 1801 | typedef struct match_data { |
| 1802 | unsigned long int match_call_count; /* As it says */ |
| 1803 | unsigned long int match_limit; /* As it says */ |
| 1804 | unsigned long int match_limit_recursion; /* As it says */ |
| 1805 | int *offset_vector; /* Offset vector */ |
| 1806 | int offset_end; /* One past the end */ |
| 1807 | int offset_max; /* The maximum usable for return data */ |
| 1808 | int nltype; /* Newline type */ |
| 1809 | int nllen; /* Newline string length */ |
| 1810 | int name_count; /* Number of names in name table */ |
| 1811 | int name_entry_size; /* Size of entry in names table */ |
| 1812 | uschar *name_table; /* Table of names */ |
| 1813 | uschar nl[4]; /* Newline string when fixed */ |
| 1814 | const uschar *lcc; /* Points to lower casing table */ |
| 1815 | const uschar *ctypes; /* Points to table of type maps */ |
| 1816 | BOOL offset_overflow; /* Set if too many extractions */ |
| 1817 | BOOL notbol; /* NOTBOL flag */ |
| 1818 | BOOL noteol; /* NOTEOL flag */ |
| 1819 | BOOL utf8; /* UTF8 flag */ |
| 1820 | BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */ |
| 1821 | BOOL use_ucp; /* PCRE_UCP flag */ |
| 1822 | BOOL endonly; /* Dollar not before final \n */ |
| 1823 | BOOL notempty; /* Empty string match not wanted */ |
| 1824 | BOOL notempty_atstart; /* Empty string match at start not wanted */ |
| 1825 | BOOL hitend; /* Hit the end of the subject at some point */ |
| 1826 | BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */ |
| 1827 | BOOL hasthen; /* Pattern contains (*THEN) */ |
| 1828 | BOOL ignore_skip_arg; /* For re-run when SKIP name not found */ |
| 1829 | const uschar *start_code; /* For use when recursing */ |
| 1830 | USPTR start_subject; /* Start of the subject string */ |
| 1831 | USPTR end_subject; /* End of the subject string */ |
| 1832 | USPTR start_match_ptr; /* Start of matched string */ |
| 1833 | USPTR end_match_ptr; /* Subject position at end match */ |
| 1834 | USPTR start_used_ptr; /* Earliest consulted character */ |
| 1835 | int partial; /* PARTIAL options */ |
| 1836 | int end_offset_top; /* Highwater mark at end of match */ |
| 1837 | int capture_last; /* Most recent capture number */ |
| 1838 | int start_offset; /* The start offset value */ |
| 1839 | int match_function_type; /* Set for certain special calls of MATCH() */ |
| 1840 | eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */ |
| 1841 | int eptrn; /* Next free eptrblock */ |
| 1842 | recursion_info *recursive; /* Linked list of recursion data */ |
| 1843 | void *callout_data; /* To pass back to callouts */ |
| 1844 | const uschar *mark; /* Mark pointer to pass back on success */ |
| 1845 | const uschar *nomatch_mark; /* Mark pointer to pass back on failure */ |
| 1846 | const uschar *once_target; /* Where to back up to for atomic groups */ |
| 1847 | } match_data; |
| 1848 | |
| 1849 | /* A similar structure is used for the same purpose by the DFA matching |
| 1850 | functions. */ |
| 1851 | |
| 1852 | typedef struct dfa_match_data { |
| 1853 | const uschar *start_code; /* Start of the compiled pattern */ |
| 1854 | const uschar *start_subject; /* Start of the subject string */ |
| 1855 | const uschar *end_subject; /* End of subject string */ |
| 1856 | const uschar *start_used_ptr; /* Earliest consulted character */ |
| 1857 | const uschar *tables; /* Character tables */ |
| 1858 | int start_offset; /* The start offset value */ |
| 1859 | int moptions; /* Match options */ |
| 1860 | int poptions; /* Pattern options */ |
| 1861 | int nltype; /* Newline type */ |
| 1862 | int nllen; /* Newline string length */ |
| 1863 | uschar nl[4]; /* Newline string when fixed */ |
| 1864 | void *callout_data; /* To pass back to callouts */ |
| 1865 | dfa_recursion_info *recursive; /* Linked list of recursion data */ |
| 1866 | } dfa_match_data; |
| 1867 | |
| 1868 | /* Bit definitions for entries in the pcre_ctypes table. */ |
| 1869 | |
| 1870 | #define ctype_space 0x01 |
| 1871 | #define ctype_letter 0x02 |
| 1872 | #define ctype_digit 0x04 |
| 1873 | #define ctype_xdigit 0x08 |
| 1874 | #define ctype_word 0x10 /* alphanumeric or '_' */ |
| 1875 | #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */ |
| 1876 | |
| 1877 | /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set |
| 1878 | of bits for a class map. Some classes are built by combining these tables. */ |
| 1879 | |
| 1880 | #define cbit_space 0 /* [:space:] or \s */ |
| 1881 | #define cbit_xdigit 32 /* [:xdigit:] */ |
| 1882 | #define cbit_digit 64 /* [:digit:] or \d */ |
| 1883 | #define cbit_upper 96 /* [:upper:] */ |
| 1884 | #define cbit_lower 128 /* [:lower:] */ |
| 1885 | #define cbit_word 160 /* [:word:] or \w */ |
| 1886 | #define cbit_graph 192 /* [:graph:] */ |
| 1887 | #define cbit_print 224 /* [:print:] */ |
| 1888 | #define cbit_punct 256 /* [:punct:] */ |
| 1889 | #define cbit_cntrl 288 /* [:cntrl:] */ |
| 1890 | #define cbit_length 320 /* Length of the cbits table */ |
| 1891 | |
| 1892 | /* Offsets of the various tables from the base tables pointer, and |
| 1893 | total length. */ |
| 1894 | |
| 1895 | #define lcc_offset 0 |
| 1896 | #define fcc_offset 256 |
| 1897 | #define cbits_offset 512 |
| 1898 | #define ctypes_offset (cbits_offset + cbit_length) |
| 1899 | #define tables_length (ctypes_offset + 256) |
| 1900 | |
| 1901 | /* Layout of the UCP type table that translates property names into types and |
| 1902 | codes. Each entry used to point directly to a name, but to reduce the number of |
| 1903 | relocations in shared libraries, it now has an offset into a single string |
| 1904 | instead. */ |
| 1905 | |
| 1906 | typedef struct { |
| 1907 | pcre_uint16 name_offset; |
| 1908 | pcre_uint16 type; |
| 1909 | pcre_uint16 value; |
| 1910 | } ucp_type_table; |
| 1911 | |
| 1912 | |
| 1913 | /* Internal shared data tables. These are tables that are used by more than one |
| 1914 | of the exported public functions. They have to be "external" in the C sense, |
| 1915 | but are not part of the PCRE public API. The data for these tables is in the |
| 1916 | pcre_tables.c module. */ |
| 1917 | |
| 1918 | extern const int _pcre_utf8_table1[]; |
| 1919 | extern const int _pcre_utf8_table2[]; |
| 1920 | extern const int _pcre_utf8_table3[]; |
| 1921 | extern const uschar _pcre_utf8_table4[]; |
| 1922 | |
| 1923 | #ifdef SUPPORT_JIT |
| 1924 | extern const uschar _pcre_utf8_char_sizes[]; |
| 1925 | #endif |
| 1926 | |
| 1927 | extern const int _pcre_utf8_table1_size; |
| 1928 | |
| 1929 | extern const char _pcre_utt_names[]; |
| 1930 | extern const ucp_type_table _pcre_utt[]; |
| 1931 | extern const int _pcre_utt_size; |
| 1932 | |
| 1933 | extern const uschar _pcre_default_tables[]; |
| 1934 | |
| 1935 | extern const uschar _pcre_OP_lengths[]; |
| 1936 | |
| 1937 | |
| 1938 | /* Internal shared functions. These are functions that are used by more than |
| 1939 | one of the exported public functions. They have to be "external" in the C |
| 1940 | sense, but are not part of the PCRE public API. */ |
| 1941 | |
| 1942 | extern const uschar *_pcre_find_bracket(const uschar *, BOOL, int); |
| 1943 | extern BOOL _pcre_is_newline(USPTR, int, USPTR, int *, BOOL); |
| 1944 | extern int _pcre_ord2utf8(int, uschar *); |
| 1945 | extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *, |
| 1946 | const pcre_study_data *, pcre_study_data *); |
| 1947 | extern int _pcre_valid_utf8(USPTR, int, int *); |
| 1948 | extern BOOL _pcre_was_newline(USPTR, int, USPTR, int *, BOOL); |
| 1949 | extern BOOL _pcre_xclass(int, const uschar *); |
| 1950 | |
| 1951 | #ifdef SUPPORT_JIT |
| 1952 | extern void _pcre_jit_compile(const real_pcre *, pcre_extra *); |
| 1953 | extern int _pcre_jit_exec(const real_pcre *, void *, PCRE_SPTR, |
| 1954 | int, int, int, int, int *, int); |
| 1955 | extern void _pcre_jit_free(void *); |
| 1956 | extern int _pcre_jit_get_size(void *); |
| 1957 | #endif |
| 1958 | |
| 1959 | /* Unicode character database (UCD) */ |
| 1960 | |
| 1961 | typedef struct { |
| 1962 | uschar script; |
| 1963 | uschar chartype; |
| 1964 | pcre_int32 other_case; |
| 1965 | } ucd_record; |
| 1966 | |
| 1967 | extern const ucd_record _pcre_ucd_records[]; |
| 1968 | extern const uschar _pcre_ucd_stage1[]; |
| 1969 | extern const pcre_uint16 _pcre_ucd_stage2[]; |
| 1970 | extern const int _pcre_ucp_gentype[]; |
| 1971 | #ifdef SUPPORT_JIT |
| 1972 | extern const int _pcre_ucp_typerange[]; |
| 1973 | #endif |
| 1974 | |
| 1975 | /* UCD access macros */ |
| 1976 | |
| 1977 | #define UCD_BLOCK_SIZE 128 |
| 1978 | #define GET_UCD(ch) (_pcre_ucd_records + \ |
| 1979 | _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \ |
| 1980 | UCD_BLOCK_SIZE + (ch) % UCD_BLOCK_SIZE]) |
| 1981 | |
| 1982 | #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype |
| 1983 | #define UCD_SCRIPT(ch) GET_UCD(ch)->script |
| 1984 | #define UCD_CATEGORY(ch) _pcre_ucp_gentype[UCD_CHARTYPE(ch)] |
| 1985 | #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case) |
| 1986 | |
| 1987 | #endif |
| 1988 | |
| 1989 | /* End of pcre_internal.h */ |