/[pcre]/code/trunk/pcre_compile.c
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revision 172 by ph10, Tue Jun 5 10:40:13 2007 UTC revision 175 by ph10, Mon Jun 11 13:38:38 2007 UTC
# Line 374  static const unsigned char ebcdic_charta Line 374  static const unsigned char ebcdic_charta
374  /* Definition to allow mutual recursion */  /* Definition to allow mutual recursion */
375    
376  static BOOL  static BOOL
377    compile_regex(int, int, uschar **, const uschar **, int *, BOOL, int, int *,    compile_regex(int, int, uschar **, const uschar **, int *, BOOL, BOOL, int,
378      int *, branch_chain *, compile_data *, int *);      int *, int *, branch_chain *, compile_data *, int *);
379    
380    
381    
# Line 2110  for (;; ptr++) Line 2110  for (;; ptr++)
2110    BOOL possessive_quantifier;    BOOL possessive_quantifier;
2111    BOOL is_quantifier;    BOOL is_quantifier;
2112    BOOL is_recurse;    BOOL is_recurse;
2113      BOOL reset_bracount;
2114    int class_charcount;    int class_charcount;
2115    int class_lastchar;    int class_lastchar;
2116    int newoptions;    int newoptions;
# Line 3584  for (;; ptr++) Line 3585  for (;; ptr++)
3585      skipbytes = 0;      skipbytes = 0;
3586      bravalue = OP_CBRA;      bravalue = OP_CBRA;
3587      save_hwm = cd->hwm;      save_hwm = cd->hwm;
3588        reset_bracount = FALSE;
3589    
3590      if (*(++ptr) == '?')      if (*(++ptr) == '?')
3591        {        {
# Line 3606  for (;; ptr++) Line 3608  for (;; ptr++)
3608    
3609    
3610          /* ------------------------------------------------------------ */          /* ------------------------------------------------------------ */
3611            case '|':                 /* Reset capture count for each branch */
3612            reset_bracount = TRUE;
3613            /* Fall through */
3614    
3615            /* ------------------------------------------------------------ */
3616          case ':':                 /* Non-capturing bracket */          case ':':                 /* Non-capturing bracket */
3617          bravalue = OP_BRA;          bravalue = OP_BRA;
3618          ptr++;          ptr++;
# Line 4304  for (;; ptr++) Line 4311  for (;; ptr++)
4311           errorcodeptr,                 /* Where to put an error message */           errorcodeptr,                 /* Where to put an error message */
4312           (bravalue == OP_ASSERTBACK ||           (bravalue == OP_ASSERTBACK ||
4313            bravalue == OP_ASSERTBACK_NOT), /* TRUE if back assert */            bravalue == OP_ASSERTBACK_NOT), /* TRUE if back assert */
4314             reset_bracount,               /* True if (?| group */
4315           skipbytes,                    /* Skip over bracket number */           skipbytes,                    /* Skip over bracket number */
4316           &subfirstbyte,                /* For possible first char */           &subfirstbyte,                /* For possible first char */
4317           &subreqbyte,                  /* For possible last char */           &subreqbyte,                  /* For possible last char */
# Line 4663  Arguments: Line 4671  Arguments:
4671    ptrptr         -> the address of the current pattern pointer    ptrptr         -> the address of the current pattern pointer
4672    errorcodeptr   -> pointer to error code variable    errorcodeptr   -> pointer to error code variable
4673    lookbehind     TRUE if this is a lookbehind assertion    lookbehind     TRUE if this is a lookbehind assertion
4674      reset_bracount TRUE to reset the count for each branch
4675    skipbytes      skip this many bytes at start (for brackets and OP_COND)    skipbytes      skip this many bytes at start (for brackets and OP_COND)
4676    firstbyteptr   place to put the first required character, or a negative number    firstbyteptr   place to put the first required character, or a negative number
4677    reqbyteptr     place to put the last required character, or a negative number    reqbyteptr     place to put the last required character, or a negative number
# Line 4676  Returns:         TRUE on success Line 4685  Returns:         TRUE on success
4685    
4686  static BOOL  static BOOL
4687  compile_regex(int options, int oldims, uschar **codeptr, const uschar **ptrptr,  compile_regex(int options, int oldims, uschar **codeptr, const uschar **ptrptr,
4688    int *errorcodeptr, BOOL lookbehind, int skipbytes, int *firstbyteptr,    int *errorcodeptr, BOOL lookbehind, BOOL reset_bracount, int skipbytes,
4689    int *reqbyteptr, branch_chain *bcptr, compile_data *cd, int *lengthptr)    int *firstbyteptr, int *reqbyteptr, branch_chain *bcptr, compile_data *cd,
4690      int *lengthptr)
4691  {  {
4692  const uschar *ptr = *ptrptr;  const uschar *ptr = *ptrptr;
4693  uschar *code = *codeptr;  uschar *code = *codeptr;
# Line 4687  uschar *reverse_count = NULL; Line 4697  uschar *reverse_count = NULL;
4697  int firstbyte, reqbyte;  int firstbyte, reqbyte;
4698  int branchfirstbyte, branchreqbyte;  int branchfirstbyte, branchreqbyte;
4699  int length;  int length;
4700    int orig_bracount;
4701    int max_bracount;
4702  branch_chain bc;  branch_chain bc;
4703    
4704  bc.outer = bcptr;  bc.outer = bcptr;
# Line 4715  code += 1 + LINK_SIZE + skipbytes; Line 4727  code += 1 + LINK_SIZE + skipbytes;
4727    
4728  /* Loop for each alternative branch */  /* Loop for each alternative branch */
4729    
4730    orig_bracount = max_bracount = cd->bracount;
4731  for (;;)  for (;;)
4732    {    {
4733      /* For a (?| group, reset the capturing bracket count so that each branch
4734      uses the same numbers. */
4735    
4736      if (reset_bracount) cd->bracount = orig_bracount;
4737    
4738    /* Handle a change of ims options at the start of the branch */    /* Handle a change of ims options at the start of the branch */
4739    
4740    if ((options & PCRE_IMS) != oldims)    if ((options & PCRE_IMS) != oldims)
# Line 4745  for (;;) Line 4763  for (;;)
4763      *ptrptr = ptr;      *ptrptr = ptr;
4764      return FALSE;      return FALSE;
4765      }      }
4766    
4767      /* Keep the highest bracket count in case (?| was used and some branch
4768      has fewer than the rest. */
4769    
4770      if (cd->bracount > max_bracount) max_bracount = cd->bracount;
4771    
4772    /* In the real compile phase, there is some post-processing to be done. */    /* In the real compile phase, there is some post-processing to be done. */
4773    
# Line 4847  for (;;) Line 4870  for (;;)
4870        *code++ = oldims;        *code++ = oldims;
4871        length += 2;        length += 2;
4872        }        }
4873    
4874        /* Retain the highest bracket number, in case resetting was used. */
4875    
4876        cd->bracount = max_bracount;
4877    
4878      /* Set values to pass back */      /* Set values to pass back */
4879    
# Line 5322  outside can help speed up starting point Line 5349  outside can help speed up starting point
5349  code = cworkspace;  code = cworkspace;
5350  *code = OP_BRA;  *code = OP_BRA;
5351  (void)compile_regex(cd->external_options, cd->external_options & PCRE_IMS,  (void)compile_regex(cd->external_options, cd->external_options & PCRE_IMS,
5352    &code, &ptr, &errorcode, FALSE, 0, &firstbyte, &reqbyte, NULL, cd, &length);    &code, &ptr, &errorcode, FALSE, FALSE, 0, &firstbyte, &reqbyte, NULL, cd,
5353      &length);
5354  if (errorcode != 0) goto PCRE_EARLY_ERROR_RETURN;  if (errorcode != 0) goto PCRE_EARLY_ERROR_RETURN;
5355    
5356  DPRINTF(("end pre-compile: length=%d workspace=%d\n", length,  DPRINTF(("end pre-compile: length=%d workspace=%d\n", length,
# Line 5390  ptr = (const uschar *)pattern; Line 5418  ptr = (const uschar *)pattern;
5418  code = (uschar *)codestart;  code = (uschar *)codestart;
5419  *code = OP_BRA;  *code = OP_BRA;
5420  (void)compile_regex(re->options, re->options & PCRE_IMS, &code, &ptr,  (void)compile_regex(re->options, re->options & PCRE_IMS, &code, &ptr,
5421    &errorcode, FALSE, 0, &firstbyte, &reqbyte, NULL, cd, NULL);    &errorcode, FALSE, FALSE, 0, &firstbyte, &reqbyte, NULL, cd, NULL);
5422  re->top_bracket = cd->bracount;  re->top_bracket = cd->bracount;
5423  re->top_backref = cd->top_backref;  re->top_backref = cd->top_backref;
5424    
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