/[pcre]/code/trunk/pcre_study.c
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revision 199 by ph10, Tue Jul 31 14:39:09 2007 UTC revision 359 by ph10, Wed Jul 9 16:20:19 2008 UTC
# Line 6  Line 6 
6  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
7    
8                         Written by Philip Hazel                         Written by Philip Hazel
9             Copyright (c) 1997-2007 University of Cambridge             Copyright (c) 1997-2008 University of Cambridge
10    
11  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
12  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 42  POSSIBILITY OF SUCH DAMAGE. Line 42  POSSIBILITY OF SUCH DAMAGE.
42  supporting functions. */  supporting functions. */
43    
44    
45  #ifdef HAVE_CONFIG_H  #ifdef HAVE_CONFIG_H
46  #include <config.h>  #include "config.h"
47  #endif  #endif
48    
49  #include "pcre_internal.h"  #include "pcre_internal.h"
50    
# Line 217  do Line 217  do
217        tcode += 1 + LINK_SIZE;        tcode += 1 + LINK_SIZE;
218        break;        break;
219    
220          /* SKIPZERO skips the bracket. */
221    
222          case OP_SKIPZERO:
223          tcode++;
224          do tcode += GET(tcode,1); while (*tcode == OP_ALT);
225          tcode += 1 + LINK_SIZE;
226          break;
227    
228        /* Single-char * or ? sets the bit and tries the next item */        /* Single-char * or ? sets the bit and tries the next item */
229    
230        case OP_STAR:        case OP_STAR:
# Line 341  do Line 349  do
349        switch(tcode[1])        switch(tcode[1])
350          {          {
351          case OP_ANY:          case OP_ANY:
352            case OP_ALLANY:
353          return SSB_FAIL;          return SSB_FAIL;
354    
355          case OP_NOT_DIGIT:          case OP_NOT_DIGIT:
# Line 495  Returns:    pointer to a pcre_extra bloc Line 504  Returns:    pointer to a pcre_extra bloc
504              NULL on error or if no optimization possible              NULL on error or if no optimization possible
505  */  */
506    
507  PCRE_EXP_DEFN pcre_extra *  PCRE_EXP_DEFN pcre_extra * PCRE_CALL_CONVENTION
508  pcre_study(const pcre *external_re, int options, const char **errorptr)  pcre_study(const pcre *external_re, int options, const char **errorptr)
509  {  {
510  uschar start_bits[32];  uschar start_bits[32];
# Line 527  code = (uschar *)re + re->name_table_off Line 536  code = (uschar *)re + re->name_table_off
536  a multiline pattern that matches only at "line starts", no further processing  a multiline pattern that matches only at "line starts", no further processing
537  at present. */  at present. */
538    
539  if ((re->options & (PCRE_ANCHORED|PCRE_FIRSTSET|PCRE_STARTLINE)) != 0)  if ((re->options & PCRE_ANCHORED) != 0 ||
540        (re->flags & (PCRE_FIRSTSET|PCRE_STARTLINE)) != 0)
541    return NULL;    return NULL;
542    
543  /* Set the character tables in the block that is passed around */  /* Set the character tables in the block that is passed around */
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