diff options
Diffstat (limited to 'src/3rdparty/pcre/pcre_study.c')
| -rw-r--r-- | src/3rdparty/pcre/pcre_study.c | 62 |
1 files changed, 43 insertions, 19 deletions
diff --git a/src/3rdparty/pcre/pcre_study.c b/src/3rdparty/pcre/pcre_study.c index 0478a00c1a..feb74115c6 100644 --- a/src/3rdparty/pcre/pcre_study.c +++ b/src/3rdparty/pcre/pcre_study.c @@ -879,9 +879,6 @@ do case OP_SOM: case OP_THEN: case OP_THEN_ARG: -#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 - case OP_XCLASS: -#endif return SSB_FAIL; /* We can ignore word boundary tests. */ @@ -1257,6 +1254,16 @@ do with a value >= 0xc4 is a potentially valid starter because it starts a character with a value > 255. */ +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + case OP_XCLASS: + if ((tcode[1 + LINK_SIZE] & XCL_HASPROP) != 0) + return SSB_FAIL; + /* All bits are set. */ + if ((tcode[1 + LINK_SIZE] & XCL_MAP) == 0 && (tcode[1 + LINK_SIZE] & XCL_NOT) != 0) + return SSB_FAIL; +#endif + /* Fall through */ + case OP_NCLASS: #if defined SUPPORT_UTF && defined COMPILE_PCRE8 if (utf) @@ -1273,8 +1280,21 @@ do case OP_CLASS: { pcre_uint8 *map; - tcode++; - map = (pcre_uint8 *)tcode; +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + map = NULL; + if (*tcode == OP_XCLASS) + { + if ((tcode[1 + LINK_SIZE] & XCL_MAP) != 0) + map = (pcre_uint8 *)(tcode + 1 + LINK_SIZE + 1); + tcode += GET(tcode, 1); + } + else +#endif + { + tcode++; + map = (pcre_uint8 *)tcode; + tcode += 32 / sizeof(pcre_uchar); + } /* In UTF-8 mode, the bits in a bit map correspond to character values, not to byte values. However, the bit map we are constructing is @@ -1282,31 +1302,35 @@ do value is > 127. In fact, there are only two possible starting bytes for characters in the range 128 - 255. */ -#if defined SUPPORT_UTF && defined COMPILE_PCRE8 - if (utf) +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + if (map != NULL) +#endif { - for (c = 0; c < 16; c++) start_bits[c] |= map[c]; - for (c = 128; c < 256; c++) +#if defined SUPPORT_UTF && defined COMPILE_PCRE8 + if (utf) { - if ((map[c/8] && (1 << (c&7))) != 0) + for (c = 0; c < 16; c++) start_bits[c] |= map[c]; + for (c = 128; c < 256; c++) { - int d = (c >> 6) | 0xc0; /* Set bit for this starter */ - start_bits[d/8] |= (1 << (d&7)); /* and then skip on to the */ - c = (c & 0xc0) + 0x40 - 1; /* next relevant character. */ + if ((map[c/8] && (1 << (c&7))) != 0) + { + int d = (c >> 6) | 0xc0; /* Set bit for this starter */ + start_bits[d/8] |= (1 << (d&7)); /* and then skip on to the */ + c = (c & 0xc0) + 0x40 - 1; /* next relevant character. */ + } } } - } - else + else #endif - { - /* In non-UTF-8 mode, the two bit maps are completely compatible. */ - for (c = 0; c < 32; c++) start_bits[c] |= map[c]; + { + /* In non-UTF-8 mode, the two bit maps are completely compatible. */ + for (c = 0; c < 32; c++) start_bits[c] |= map[c]; + } } /* Advance past the bit map, and act on what follows. For a zero minimum repeat, continue; otherwise stop processing. */ - tcode += 32 / sizeof(pcre_uchar); switch (*tcode) { case OP_CRSTAR: |