/[pcre]/code/trunk/pcre_compile.c
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revision 509 by ph10, Wed Mar 10 16:08:01 2010 UTC revision 510 by ph10, Sat Mar 27 17:45:29 2010 UTC
# Line 188  string is built from string macros so th Line 188  string is built from string macros so th
188  platforms. */  platforms. */
189    
190  typedef struct verbitem {  typedef struct verbitem {
191    int   len;    int   len;                 /* Length of verb name */
192    int   op;    int   op;                  /* Op when no arg, or -1 if arg mandatory */
193      int   op_arg;              /* Op when arg present, or -1 if not allowed */
194  } verbitem;  } verbitem;
195    
196  static const char verbnames[] =  static const char verbnames[] =
197      "\0"                       /* Empty name is a shorthand for MARK */
198      STRING_MARK0
199    STRING_ACCEPT0    STRING_ACCEPT0
200    STRING_COMMIT0    STRING_COMMIT0
201    STRING_F0    STRING_F0
# Line 202  static const char verbnames[] = Line 205  static const char verbnames[] =
205    STRING_THEN;    STRING_THEN;
206    
207  static const verbitem verbs[] = {  static const verbitem verbs[] = {
208    { 6, OP_ACCEPT },    { 0, -1,        OP_MARK },
209    { 6, OP_COMMIT },    { 4, -1,        OP_MARK },
210    { 1, OP_FAIL },    { 6, OP_ACCEPT, -1 },
211    { 4, OP_FAIL },    { 6, OP_COMMIT, -1 },
212    { 5, OP_PRUNE },    { 1, OP_FAIL,   -1 },
213    { 4, OP_SKIP  },    { 4, OP_FAIL,   -1 },
214    { 4, OP_THEN  }    { 5, OP_PRUNE,  OP_PRUNE_ARG },
215      { 4, OP_SKIP,   OP_SKIP_ARG  },
216      { 4, OP_THEN,   OP_THEN_ARG  }
217  };  };
218    
219  static const int verbcount = sizeof(verbs)/sizeof(verbitem);  static const int verbcount = sizeof(verbs)/sizeof(verbitem);
# Line 345  static const char error_texts[] = Line 350  static const char error_texts[] =
350    "inconsistent NEWLINE options\0"    "inconsistent NEWLINE options\0"
351    "\\g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number\0"    "\\g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number\0"
352    "a numbered reference must not be zero\0"    "a numbered reference must not be zero\0"
353    "(*VERB) with an argument is not supported\0"    "an argument is not allowed for (*ACCEPT), (*FAIL), or (*COMMIT)\0"
354    /* 60 */    /* 60 */
355    "(*VERB) not recognized\0"    "(*VERB) not recognized\0"
356    "number is too big\0"    "number is too big\0"
# Line 353  static const char error_texts[] = Line 358  static const char error_texts[] =
358    "digit expected after (?+\0"    "digit expected after (?+\0"
359    "] is an invalid data character in JavaScript compatibility mode\0"    "] is an invalid data character in JavaScript compatibility mode\0"
360    /* 65 */    /* 65 */
361    "different names for subpatterns of the same number are not allowed\0";    "different names for subpatterns of the same number are not allowed\0"
362      "(*MARK) must have an argument\0"
363      ;
364    
365  /* Table to identify digits and hex digits. This is used when compiling  /* Table to identify digits and hex digits. This is used when compiling
366  patterns. Note that the tables in chartables are dependent on the locale, and  patterns. Note that the tables in chartables are dependent on the locale, and
# Line 1615  for (;;) Line 1622  for (;;)
1622    
1623    /* Otherwise, we can get the item's length from the table, except that for    /* Otherwise, we can get the item's length from the table, except that for
1624    repeated character types, we have to test for \p and \P, which have an extra    repeated character types, we have to test for \p and \P, which have an extra
1625    two bytes of parameters. */    two bytes of parameters, and for MARK/PRUNE/SKIP/THEN with an argument, we
1626      must add in its length. */
1627    
1628    else    else
1629      {      {
# Line 1639  for (;;) Line 1647  for (;;)
1647        case OP_TYPEPOSUPTO:        case OP_TYPEPOSUPTO:
1648        if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;        if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;
1649        break;        break;
1650    
1651          case OP_MARK:
1652          case OP_PRUNE_ARG:
1653          case OP_SKIP_ARG:
1654          case OP_THEN_ARG:
1655          code += code[1];
1656          break;
1657        }        }
1658    
1659      /* Add in the fixed length from the table */      /* Add in the fixed length from the table */
# Line 1710  for (;;) Line 1725  for (;;)
1725    
1726    /* Otherwise, we can get the item's length from the table, except that for    /* Otherwise, we can get the item's length from the table, except that for
1727    repeated character types, we have to test for \p and \P, which have an extra    repeated character types, we have to test for \p and \P, which have an extra
1728    two bytes of parameters. */    two bytes of parameters, and for MARK/PRUNE/SKIP/THEN with an argument, we
1729      must add in its length. */
1730    
1731    else    else
1732      {      {
# Line 1734  for (;;) Line 1750  for (;;)
1750        case OP_TYPEEXACT:        case OP_TYPEEXACT:
1751        if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;        if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;
1752        break;        break;
1753    
1754          case OP_MARK:
1755          case OP_PRUNE_ARG:
1756          case OP_SKIP_ARG:
1757          case OP_THEN_ARG:
1758          code += code[1];
1759          break;
1760        }        }
1761    
1762      /* Add in the fixed length from the table */      /* Add in the fixed length from the table */
# Line 2003  for (code = first_significant_code(code Line 2026  for (code = first_significant_code(code
2026      break;      break;
2027  #endif  #endif
2028    
2029        /* MARK, and PRUNE/SKIP/THEN with an argument must skip over the argument
2030        string. */
2031    
2032        case OP_MARK:
2033        case OP_PRUNE_ARG:
2034        case OP_SKIP_ARG:
2035        case OP_THEN_ARG:
2036        code += code[1];
2037        break;
2038    
2039      /* None of the remaining opcodes are required to match a character. */      /* None of the remaining opcodes are required to match a character. */
2040    
2041      default:      default:
# Line 4514  we set the flag only if there is a liter Line 4547  we set the flag only if there is a liter
4547    
4548      /* First deal with various "verbs" that can be introduced by '*'. */      /* First deal with various "verbs" that can be introduced by '*'. */
4549    
4550      if (*(++ptr) == CHAR_ASTERISK && (cd->ctypes[ptr[1]] & ctype_letter) != 0)      if (*(++ptr) == CHAR_ASTERISK &&
4551             ((cd->ctypes[ptr[1]] & ctype_letter) != 0 || ptr[1] == ':'))
4552        {        {
4553        int i, namelen;        int i, namelen;
4554          int arglen = 0;
4555        const char *vn = verbnames;        const char *vn = verbnames;
4556        const uschar *name = ++ptr;        const uschar *name = ptr + 1;
4557          const uschar *arg = NULL;
4558        previous = NULL;        previous = NULL;
4559        while ((cd->ctypes[*++ptr] & ctype_letter) != 0) {};        while ((cd->ctypes[*++ptr] & ctype_letter) != 0) {};
4560          namelen = ptr - name;
4561    
4562        if (*ptr == CHAR_COLON)        if (*ptr == CHAR_COLON)
4563          {          {
4564          *errorcodeptr = ERR59;   /* Not supported */          arg = ++ptr;
4565          goto FAILED;          while ((cd->ctypes[*ptr] & (ctype_letter|ctype_digit)) != 0
4566              || *ptr == '_') ptr++;
4567            arglen = ptr - arg;
4568          }          }
4569    
4570        if (*ptr != CHAR_RIGHT_PARENTHESIS)        if (*ptr != CHAR_RIGHT_PARENTHESIS)
4571          {          {
4572          *errorcodeptr = ERR60;          *errorcodeptr = ERR60;
4573          goto FAILED;          goto FAILED;
4574          }          }
4575        namelen = ptr - name;  
4576          /* Scan the table of verb names */
4577    
4578        for (i = 0; i < verbcount; i++)        for (i = 0; i < verbcount; i++)
4579          {          {
4580          if (namelen == verbs[i].len &&          if (namelen == verbs[i].len &&
# Line 4549  we set the flag only if there is a liter Line 4592  we set the flag only if there is a liter
4592                PUT2INC(code, 0, oc->number);                PUT2INC(code, 0, oc->number);
4593                }                }
4594              }              }
4595            *code++ = verbs[i].op;  
4596            break;            /* Handle the cases with/without an argument */
4597    
4598              if (arglen == 0)
4599                {
4600                if (verbs[i].op < 0)   /* Argument is mandatory */
4601                  {
4602                  *errorcodeptr = ERR66;
4603                  goto FAILED;
4604                  }
4605                *code++ = verbs[i].op;
4606                }
4607    
4608              else
4609                {
4610                if (verbs[i].op_arg < 0)   /* Argument is forbidden */
4611                  {
4612                  *errorcodeptr = ERR59;
4613                  goto FAILED;
4614                  }
4615                *code++ = verbs[i].op_arg;
4616                *code++ = arglen;
4617                memcpy(code, arg, arglen);
4618                code += arglen;
4619                *code++ = 0;
4620                }
4621    
4622              break;  /* Found verb, exit loop */
4623            }            }
4624    
4625          vn += verbs[i].len + 1;          vn += verbs[i].len + 1;
4626          }          }
4627        if (i < verbcount) continue;  
4628        *errorcodeptr = ERR60;        if (i < verbcount) continue;    /* Successfully handled a verb */
4629          *errorcodeptr = ERR60;          /* Verb not recognized */
4630        goto FAILED;        goto FAILED;
4631        }        }
4632    
# Line 5338  we set the flag only if there is a liter Line 5409  we set the flag only if there is a liter
5409          }     /* End of switch for character following (? */          }     /* End of switch for character following (? */
5410        }       /* End of (? handling */        }       /* End of (? handling */
5411    
5412      /* Opening parenthesis not followed by '?'. If PCRE_NO_AUTO_CAPTURE is set,      /* Opening parenthesis not followed by '*' or '?'. If PCRE_NO_AUTO_CAPTURE
5413      all unadorned brackets become non-capturing and behave like (?:...)      is set, all unadorned brackets become non-capturing and behave like (?:...)
5414      brackets. */      brackets. */
5415    
5416      else if ((options & PCRE_NO_AUTO_CAPTURE) != 0)      else if ((options & PCRE_NO_AUTO_CAPTURE) != 0)

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