/[pcre]/code/branches/pcre16/pcrecpp.cc
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revision 259 by ph10, Wed Sep 19 09:52:44 2007 UTC revision 326 by ph10, Sat Mar 8 17:24:02 2008 UTC
# Line 55  static const int kMaxArgs = 16; Line 55  static const int kMaxArgs = 16;
55  static const int kVecSize = (1 + kMaxArgs) * 3;  // results + PCRE workspace  static const int kVecSize = (1 + kMaxArgs) * 3;  // results + PCRE workspace
56    
57  // Special object that stands-in for no argument  // Special object that stands-in for no argument
58  PCRECPP_EXP_DEFN Arg no_arg((void*)NULL);  Arg RE::no_arg((void*)NULL);
59    
60    // This is for ABI compatibility with old versions of pcre (pre-7.6),
61    // which defined a global no_arg variable instead of putting it in the
62    // RE class.  This works on GCC >= 3, at least.  We could probably have
63    // a more inclusive test if we ever needed it.
64    #if defined(__GNUC__) && __GNUC__ >= 3
65    extern Arg no_arg __attribute__((alias("_ZN7pcrecpp2RE6no_argE")));
66    #endif
67    
68  // If a regular expression has no error, its error_ field points here  // If a regular expression has no error, its error_ field points here
69  static const string empty_string;  static const string empty_string;
# Line 369  int RE::GlobalReplace(const StringPiece& Line 377  int RE::GlobalReplace(const StringPiece&
377    int start = 0;    int start = 0;
378    int lastend = -1;    int lastend = -1;
379    
380    for (; start <= static_cast<int>(str->length()); count++) {    while (start <= static_cast<int>(str->length())) {
381      int matches = TryMatch(*str, start, UNANCHORED, vec, kVecSize);      int matches = TryMatch(*str, start, UNANCHORED, vec, kVecSize);
382      if (matches <= 0)      if (matches <= 0)
383        break;        break;
# Line 441  bool RE::Extract(const StringPiece& rewr Line 449  bool RE::Extract(const StringPiece& rewr
449    // Note that it's legal to escape a character even if it has no    // Note that it's legal to escape a character even if it has no
450    // special meaning in a regular expression -- so this function does    // special meaning in a regular expression -- so this function does
451    // that.  (This also makes it identical to the perl function of the    // that.  (This also makes it identical to the perl function of the
452    // same name; see `perldoc -f quotemeta`.)    // same name; see `perldoc -f quotemeta`.)  The one exception is
453      // escaping NUL: rather than doing backslash + NUL, like perl does,
454      // we do '\0', because pcre itself doesn't take embedded NUL chars.
455    for (int ii = 0; ii < unquoted.size(); ++ii) {    for (int ii = 0; ii < unquoted.size(); ++ii) {
456      // Note that using 'isalnum' here raises the benchmark time from      // Note that using 'isalnum' here raises the benchmark time from
457      // 32ns to 58ns:      // 32ns to 58ns:
458      if ((unquoted[ii] < 'a' || unquoted[ii] > 'z') &&      if (unquoted[ii] == '\0') {
459          (unquoted[ii] < 'A' || unquoted[ii] > 'Z') &&        result += "\\0";
460          (unquoted[ii] < '0' || unquoted[ii] > '9') &&      } else if ((unquoted[ii] < 'a' || unquoted[ii] > 'z') &&
461          unquoted[ii] != '_' &&                 (unquoted[ii] < 'A' || unquoted[ii] > 'Z') &&
462          // If this is the part of a UTF8 or Latin1 character, we need                 (unquoted[ii] < '0' || unquoted[ii] > '9') &&
463          // to copy this byte without escaping.  Experimentally this is                 unquoted[ii] != '_' &&
464          // what works correctly with the regexp library.                 // If this is the part of a UTF8 or Latin1 character, we need
465          !(unquoted[ii] & 128)) {                 // to copy this byte without escaping.  Experimentally this is
466                   // what works correctly with the regexp library.
467                   !(unquoted[ii] & 128)) {
468        result += '\\';        result += '\\';
469          result += unquoted[ii];
470        } else {
471          result += unquoted[ii];
472      }      }
     result += unquoted[ii];  
473    }    }
474    
475    return result;    return result;
# Line 618  bool Arg::parse_null(const char* str, in Line 632  bool Arg::parse_null(const char* str, in
632  }  }
633    
634  bool Arg::parse_string(const char* str, int n, void* dest) {  bool Arg::parse_string(const char* str, int n, void* dest) {
635      if (dest == NULL) return true;
636    reinterpret_cast<string*>(dest)->assign(str, n);    reinterpret_cast<string*>(dest)->assign(str, n);
637    return true;    return true;
638  }  }
639    
640  bool Arg::parse_stringpiece(const char* str, int n, void* dest) {  bool Arg::parse_stringpiece(const char* str, int n, void* dest) {
641      if (dest == NULL) return true;
642    reinterpret_cast<StringPiece*>(dest)->set(str, n);    reinterpret_cast<StringPiece*>(dest)->set(str, n);
643    return true;    return true;
644  }  }
645    
646  bool Arg::parse_char(const char* str, int n, void* dest) {  bool Arg::parse_char(const char* str, int n, void* dest) {
647    if (n != 1) return false;    if (n != 1) return false;
648      if (dest == NULL) return true;
649    *(reinterpret_cast<char*>(dest)) = str[0];    *(reinterpret_cast<char*>(dest)) = str[0];
650    return true;    return true;
651  }  }
652    
653  bool Arg::parse_uchar(const char* str, int n, void* dest) {  bool Arg::parse_uchar(const char* str, int n, void* dest) {
654    if (n != 1) return false;    if (n != 1) return false;
655      if (dest == NULL) return true;
656    *(reinterpret_cast<unsigned char*>(dest)) = str[0];    *(reinterpret_cast<unsigned char*>(dest)) = str[0];
657    return true;    return true;
658  }  }
# Line 683  bool Arg::parse_long_radix(const char* s Line 701  bool Arg::parse_long_radix(const char* s
701    long r = strtol(str, &end, radix);    long r = strtol(str, &end, radix);
702    if (end != str + n) return false;   // Leftover junk    if (end != str + n) return false;   // Leftover junk
703    if (errno) return false;    if (errno) return false;
704      if (dest == NULL) return true;
705    *(reinterpret_cast<long*>(dest)) = r;    *(reinterpret_cast<long*>(dest)) = r;
706    return true;    return true;
707  }  }
# Line 700  bool Arg::parse_ulong_radix(const char* Line 719  bool Arg::parse_ulong_radix(const char*
719    unsigned long r = strtoul(str, &end, radix);    unsigned long r = strtoul(str, &end, radix);
720    if (end != str + n) return false;   // Leftover junk    if (end != str + n) return false;   // Leftover junk
721    if (errno) return false;    if (errno) return false;
722      if (dest == NULL) return true;
723    *(reinterpret_cast<unsigned long*>(dest)) = r;    *(reinterpret_cast<unsigned long*>(dest)) = r;
724    return true;    return true;
725  }  }
# Line 711  bool Arg::parse_short_radix(const char* Line 731  bool Arg::parse_short_radix(const char*
731    long r;    long r;
732    if (!parse_long_radix(str, n, &r, radix)) return false; // Could not parse    if (!parse_long_radix(str, n, &r, radix)) return false; // Could not parse
733    if (r < SHRT_MIN || r > SHRT_MAX) return false;       // Out of range    if (r < SHRT_MIN || r > SHRT_MAX) return false;       // Out of range
734      if (dest == NULL) return true;
735    *(reinterpret_cast<short*>(dest)) = static_cast<short>(r);    *(reinterpret_cast<short*>(dest)) = static_cast<short>(r);
736    return true;    return true;
737  }  }
# Line 722  bool Arg::parse_ushort_radix(const char* Line 743  bool Arg::parse_ushort_radix(const char*
743    unsigned long r;    unsigned long r;
744    if (!parse_ulong_radix(str, n, &r, radix)) return false; // Could not parse    if (!parse_ulong_radix(str, n, &r, radix)) return false; // Could not parse
745    if (r > USHRT_MAX) return false;                      // Out of range    if (r > USHRT_MAX) return false;                      // Out of range
746      if (dest == NULL) return true;
747    *(reinterpret_cast<unsigned short*>(dest)) = static_cast<unsigned short>(r);    *(reinterpret_cast<unsigned short*>(dest)) = static_cast<unsigned short>(r);
748    return true;    return true;
749  }  }
# Line 733  bool Arg::parse_int_radix(const char* st Line 755  bool Arg::parse_int_radix(const char* st
755    long r;    long r;
756    if (!parse_long_radix(str, n, &r, radix)) return false; // Could not parse    if (!parse_long_radix(str, n, &r, radix)) return false; // Could not parse
757    if (r < INT_MIN || r > INT_MAX) return false;         // Out of range    if (r < INT_MIN || r > INT_MAX) return false;         // Out of range
758      if (dest == NULL) return true;
759    *(reinterpret_cast<int*>(dest)) = r;    *(reinterpret_cast<int*>(dest)) = r;
760    return true;    return true;
761  }  }
# Line 744  bool Arg::parse_uint_radix(const char* s Line 767  bool Arg::parse_uint_radix(const char* s
767    unsigned long r;    unsigned long r;
768    if (!parse_ulong_radix(str, n, &r, radix)) return false; // Could not parse    if (!parse_ulong_radix(str, n, &r, radix)) return false; // Could not parse
769    if (r > UINT_MAX) return false;                       // Out of range    if (r > UINT_MAX) return false;                       // Out of range
770      if (dest == NULL) return true;
771    *(reinterpret_cast<unsigned int*>(dest)) = r;    *(reinterpret_cast<unsigned int*>(dest)) = r;
772    return true;    return true;
773  }  }
# Line 771  bool Arg::parse_longlong_radix(const cha Line 795  bool Arg::parse_longlong_radix(const cha
795  #endif  #endif
796    if (end != str + n) return false;   // Leftover junk    if (end != str + n) return false;   // Leftover junk
797    if (errno) return false;    if (errno) return false;
798      if (dest == NULL) return true;
799    *(reinterpret_cast<long long*>(dest)) = r;    *(reinterpret_cast<long long*>(dest)) = r;
800    return true;    return true;
801  #endif   /* HAVE_LONG_LONG */  #endif   /* HAVE_LONG_LONG */
# Line 800  bool Arg::parse_ulonglong_radix(const ch Line 825  bool Arg::parse_ulonglong_radix(const ch
825  #endif  #endif
826    if (end != str + n) return false;   // Leftover junk    if (end != str + n) return false;   // Leftover junk
827    if (errno) return false;    if (errno) return false;
828      if (dest == NULL) return true;
829    *(reinterpret_cast<unsigned long long*>(dest)) = r;    *(reinterpret_cast<unsigned long long*>(dest)) = r;
830    return true;    return true;
831  #endif   /* HAVE_UNSIGNED_LONG_LONG */  #endif   /* HAVE_UNSIGNED_LONG_LONG */
# Line 817  bool Arg::parse_double(const char* str, Line 843  bool Arg::parse_double(const char* str,
843    double r = strtod(buf, &end);    double r = strtod(buf, &end);
844    if (end != buf + n) return false;   // Leftover junk    if (end != buf + n) return false;   // Leftover junk
845    if (errno) return false;    if (errno) return false;
846      if (dest == NULL) return true;
847    *(reinterpret_cast<double*>(dest)) = r;    *(reinterpret_cast<double*>(dest)) = r;
848    return true;    return true;
849  }  }
# Line 824  bool Arg::parse_double(const char* str, Line 851  bool Arg::parse_double(const char* str,
851  bool Arg::parse_float(const char* str, int n, void* dest) {  bool Arg::parse_float(const char* str, int n, void* dest) {
852    double r;    double r;
853    if (!parse_double(str, n, &r)) return false;    if (!parse_double(str, n, &r)) return false;
854      if (dest == NULL) return true;
855    *(reinterpret_cast<float*>(dest)) = static_cast<float>(r);    *(reinterpret_cast<float*>(dest)) = static_cast<float>(r);
856    return true;    return true;
857  }  }
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