/[pcre]/code/trunk/pcre.c
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Diff of /code/trunk/pcre.c

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revision 15 by nigel, Sat Feb 24 21:38:25 2007 UTC revision 21 by nigel, Sat Feb 24 21:38:37 2007 UTC
# Line 264  do { Line 264  do {
264        case OP_KETRMIN:        case OP_KETRMIN:
265        return TRUE;        return TRUE;
266    
267          /* Skip over entire bracket groups with zero lower bound */
268    
269          case OP_BRAZERO:
270          case OP_BRAMINZERO:
271          cc++;
272          /* Fall through */
273    
274        /* Skip over assertive subpatterns */        /* Skip over assertive subpatterns */
275    
276        case OP_ASSERT:        case OP_ASSERT:
# Line 278  do { Line 285  do {
285        case OP_EOD:        case OP_EOD:
286        case OP_CIRC:        case OP_CIRC:
287        case OP_DOLL:        case OP_DOLL:
       case OP_BRAZERO:  
       case OP_BRAMINZERO:  
288        case OP_NOT_WORD_BOUNDARY:        case OP_NOT_WORD_BOUNDARY:
289        case OP_WORD_BOUNDARY:        case OP_WORD_BOUNDARY:
290        cc++;        cc++;
# Line 618  compile_branch(int options, int *bracket Line 623  compile_branch(int options, int *bracket
623  int repeat_type, op_type;  int repeat_type, op_type;
624  int repeat_min, repeat_max;  int repeat_min, repeat_max;
625  int bravalue, length;  int bravalue, length;
626    int greedy_default, greedy_non_default;
627  register int c;  register int c;
628  register uschar *code = *codeptr;  register uschar *code = *codeptr;
629  const uschar *ptr = *ptrptr;  const uschar *ptr = *ptrptr;
# Line 625  const uschar *oldptr; Line 631  const uschar *oldptr;
631  uschar *previous = NULL;  uschar *previous = NULL;
632  uschar class[32];  uschar class[32];
633    
634    /* Set up the default and non-default settings for greediness */
635    
636    greedy_default = ((options & PCRE_UNGREEDY) != 0);
637    greedy_non_default = greedy_default ^ 1;
638    
639  /* Switch on next character until the end of the branch */  /* Switch on next character until the end of the branch */
640    
641  for (;; ptr++)  for (;; ptr++)
# Line 902  for (;; ptr++) Line 913  for (;; ptr++)
913        goto FAILED;        goto FAILED;
914        }        }
915    
916      /* If the next character is '?' this is a minimizing repeat. Advance to the      /* If the next character is '?' this is a minimizing repeat, by default,
917        but if PCRE_UNGREEDY is set, it works the other way round. Advance to the
918      next character. */      next character. */
919    
920      if (ptr[1] == '?') { repeat_type = 1; ptr++; } else repeat_type = 0;      if (ptr[1] == '?')
921          { repeat_type = greedy_non_default; ptr++; }
922        else repeat_type = greedy_default;
923    
924      /* If the maximum is zero then the minimum must also be zero; Perl allows      /* If the maximum is zero then the minimum must also be zero; Perl allows
925      this case, so we do too - by simply omitting the item altogether. */      this case, so we do too - by simply omitting the item altogether. */
# Line 994  for (;; ptr++) Line 1008  for (;; ptr++)
1008          /* If the mininum is 1 and the previous item was a character string,          /* If the mininum is 1 and the previous item was a character string,
1009          we either have to put back the item that got cancelled if the string          we either have to put back the item that got cancelled if the string
1010          length was 1, or add the character back onto the end of a longer          length was 1, or add the character back onto the end of a longer
1011          string. For a character type nothing need be done; it will just get put          string. For a character type nothing need be done; it will just get
1012          back naturally. */          put back naturally. Note that the final character is always going to
1013            get added below. */
1014    
1015          else if (*previous == OP_CHARS)          else if (*previous == OP_CHARS)
1016            {            {
1017            if (code == previous) code += 2; else previous[1]++;            if (code == previous) code += 2; else previous[1]++;
1018            }            }
1019    
1020            /*  For a single negated character we also have to put back the
1021            item that got cancelled. */
1022    
1023            else if (*previous == OP_NOT) code++;
1024    
1025          /* If the maximum is unlimited, insert an OP_STAR. */          /* If the maximum is unlimited, insert an OP_STAR. */
1026    
1027          if (repeat_max < 0)          if (repeat_max < 0)
# Line 1144  for (;; ptr++) Line 1164  for (;; ptr++)
1164          case 'm':          case 'm':
1165          case 's':          case 's':
1166          case 'x':          case 'x':
1167            case 'U':
1168            case 'X':
1169          ptr++;          ptr++;
1170          while (*ptr != ')') ptr++;          while (*ptr != ')') ptr++;
1171          previous = NULL;          previous = NULL;
# Line 1747  while ((c = *(++ptr)) != 0) Line 1769  while ((c = *(++ptr)) != 0)
1769          ptr += 2;          ptr += 2;
1770          break;          break;
1771          }          }
1772        /* Else fall thourh */        /* Else fall through */
1773    
1774        /* Else loop setting valid options until ) is met. Anything else is an        /* Else loop setting valid options until ) is met. Anything else is an
1775        error. */        error. */
# Line 1777  while ((c = *(++ptr)) != 0) Line 1799  while ((c = *(++ptr)) != 0)
1799            length -= spaces;          /* Already counted spaces */            length -= spaces;          /* Already counted spaces */
1800            continue;            continue;
1801            }            }
1802            else if (c == 'X')
1803              {
1804              options |= PCRE_EXTRA;
1805              continue;
1806              }
1807            else if (c == 'U')
1808              {
1809              options |= PCRE_UNGREEDY;
1810              continue;
1811              }
1812          else if (c == ')') break;          else if (c == ')') break;
1813    
1814          *errorptr = ERR12;          *errorptr = ERR12;
# Line 1982  printf("Length = %d top_bracket = %d top Line 2014  printf("Length = %d top_bracket = %d top
2014    
2015  if (re->options != 0)  if (re->options != 0)
2016    {    {
2017    printf("%s%s%s%s%s%s%s\n",    printf("%s%s%s%s%s%s%s%s\n",
2018      ((re->options & PCRE_ANCHORED) != 0)? "anchored " : "",      ((re->options & PCRE_ANCHORED) != 0)? "anchored " : "",
2019      ((re->options & PCRE_CASELESS) != 0)? "caseless " : "",      ((re->options & PCRE_CASELESS) != 0)? "caseless " : "",
2020      ((re->options & PCRE_EXTENDED) != 0)? "extended " : "",      ((re->options & PCRE_EXTENDED) != 0)? "extended " : "",
2021      ((re->options & PCRE_MULTILINE) != 0)? "multiline " : "",      ((re->options & PCRE_MULTILINE) != 0)? "multiline " : "",
2022      ((re->options & PCRE_DOTALL) != 0)? "dotall " : "",      ((re->options & PCRE_DOTALL) != 0)? "dotall " : "",
2023      ((re->options & PCRE_DOLLAR_ENDONLY) != 0)? "endonly " : "",      ((re->options & PCRE_DOLLAR_ENDONLY) != 0)? "endonly " : "",
2024      ((re->options & PCRE_EXTRA) != 0)? "extra " : "");      ((re->options & PCRE_EXTRA) != 0)? "extra " : "",
2025        ((re->options & PCRE_UNGREEDY) != 0)? "ungreedy " : "");
2026    }    }
2027    
2028  if ((re->options & PCRE_FIRSTSET) != 0)  if ((re->options & PCRE_FIRSTSET) != 0)
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