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author | zherczeg <zherczeg@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2013-12-22 16:27:35 +0000 |
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committer | zherczeg <zherczeg@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2013-12-22 16:27:35 +0000 |
commit | f928c7adccd8daa61e76c22130d79689ec41f21c (patch) | |
tree | cd7785129e501b2214ee32c6d3a895c5ea08a64d /pcre_compile.c | |
parent | 27e5192041ef241b4d3f559d067b81e431698a63 (diff) | |
download | pcre-f928c7adccd8daa61e76c22130d79689ec41f21c.tar.gz |
A new flag is set, when property checks are present in an XCLASS.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1414 2f5784b3-3f2a-0410-8824-cb99058d5e15
Diffstat (limited to 'pcre_compile.c')
-rw-r--r-- | pcre_compile.c | 52 |
1 files changed, 34 insertions, 18 deletions
diff --git a/pcre_compile.c b/pcre_compile.c index c170c47..88b9636 100644 --- a/pcre_compile.c +++ b/pcre_compile.c @@ -4105,6 +4105,7 @@ add_to_class(pcre_uint8 *classbits, pcre_uchar **uchardptr, int options, compile_data *cd, pcre_uint32 start, pcre_uint32 end) { pcre_uint32 c; +pcre_uint32 classbits_end = (end <= 0xff ? end : 0xff); int n8 = 0; /* If caseless matching is required, scan the range and process alternate @@ -4148,7 +4149,7 @@ if ((options & PCRE_CASELESS) != 0) /* Not UTF-mode, or no UCP */ - for (c = start; c <= end && c < 256; c++) + for (c = start; c <= classbits_end; c++) { SETBIT(classbits, cd->fcc[c]); n8++; @@ -4173,20 +4174,19 @@ in all cases. */ #endif /* COMPILE_PCRE[8|16] */ -/* If all characters are less than 256, use the bit map. Otherwise use extra -data. */ +/* Use the bitmap for characters < 256. Otherwise use extra data.*/ -if (end < 0x100) +for (c = start; c <= classbits_end; c++) { - for (c = start; c <= end; c++) - { - n8++; - SETBIT(classbits, c); - } + /* Regardless of start, c will always be <= 255. */ + SETBIT(classbits, c); + n8++; } -else - { +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 +if (start <= 0xff) start = 0xff + 1; + +if (end >= start) { pcre_uchar *uchardata = *uchardptr; #ifdef SUPPORT_UTF @@ -4228,6 +4228,7 @@ else *uchardptr = uchardata; /* Updata extra data pointer */ } +#endif /* SUPPORT_UTF || !COMPILE_PCRE8 */ return n8; /* Number of 8-bit characters */ } @@ -4449,6 +4450,9 @@ for (;; ptr++) BOOL reset_bracount; int class_has_8bitchar; int class_one_char; +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + BOOL xclass_has_prop; +#endif int newoptions; int recno; int refsign; @@ -4783,13 +4787,26 @@ for (;; ptr++) should_flip_negation = FALSE; + /* Extended class (xclass) will be used when characters > 255 + might match. */ + +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + xclass = FALSE; + class_uchardata = code + LINK_SIZE + 2; /* For XCLASS items */ + class_uchardata_base = class_uchardata; /* Save the start */ +#endif + /* For optimization purposes, we track some properties of the class: class_has_8bitchar will be non-zero if the class contains at least one < 256 character; class_one_char will be 1 if the class contains just one - character. */ + character; xclass_has_prop will be TRUE if unicode property checks + are present in the class. */ class_has_8bitchar = 0; class_one_char = 0; +#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 + xclass_has_prop = FALSE; +#endif /* Initialize the 32-char bit map to all zeros. We build the map in a temporary bit of memory, in case the class contains fewer than two @@ -4798,12 +4815,6 @@ for (;; ptr++) memset(classbits, 0, 32 * sizeof(pcre_uint8)); -#if defined SUPPORT_UTF || !defined COMPILE_PCRE8 - xclass = FALSE; - class_uchardata = code + LINK_SIZE + 2; /* For XCLASS items */ - class_uchardata_base = class_uchardata; /* Save the start */ -#endif - /* Process characters until ] is reached. By writing this as a "do" it means that an initial ] is taken as a data character. At the start of the loop, c contains the first byte of the character. */ @@ -4927,6 +4938,7 @@ for (;; ptr++) *class_uchardata++ = local_negate? XCL_NOTPROP : XCL_PROP; *class_uchardata++ = ptype; *class_uchardata++ = 0; + xclass_has_prop = TRUE; ptr = tempptr + 1; continue; @@ -5109,6 +5121,7 @@ for (;; ptr++) XCL_PROP : XCL_NOTPROP; *class_uchardata++ = ptype; *class_uchardata++ = pdata; + xclass_has_prop = TRUE; class_has_8bitchar--; /* Undo! */ continue; } @@ -5403,6 +5416,7 @@ for (;; ptr++) *code++ = OP_XCLASS; code += LINK_SIZE; *code = negate_class? XCL_NOT:0; + if (xclass_has_prop) *code |= XCL_HASPROP; /* If the map is required, move up the extra data to make room for it; otherwise just move the code pointer to the end of the extra data. */ @@ -5412,6 +5426,8 @@ for (;; ptr++) *code++ |= XCL_MAP; memmove(code + (32 / sizeof(pcre_uchar)), code, IN_UCHARS(class_uchardata - code)); + if (negate_class && !xclass_has_prop) + for (c = 0; c < 32; c++) classbits[c] = ~classbits[c]; memcpy(code, classbits, 32); code = class_uchardata + (32 / sizeof(pcre_uchar)); } |