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      1 // Copyright 2010, Google Inc. All rights reserved.
      2 //
      3 // Redistribution and use in source and binary forms, with or without
      4 // modification, are permitted provided that the following conditions are
      5 // met:
      6 //
      7 //     * Redistributions of source code must retain the above copyright
      8 // notice, this list of conditions and the following disclaimer.
      9 //     * Redistributions in binary form must reproduce the above
     10 // copyright notice, this list of conditions and the following disclaimer
     11 // in the documentation and/or other materials provided with the
     12 // distribution.
     13 //     * Neither the name of Google Inc. nor the names of its
     14 // contributors may be used to endorse or promote products derived from
     15 // this software without specific prior written permission.
     16 //
     17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 #ifndef URLCharacterTypes_h
     30 #define URLCharacterTypes_h
     31 
     32 namespace WTF {
     33 
     34 class URLCharacterTypes {
     35 public:
     36     static inline bool isQueryChar(unsigned char c) { return isCharOfType(c, QueryCharacter); }
     37     static inline bool isIPv4Char(unsigned char c) { return isCharOfType(c, IPv4Character); }
     38     static inline bool isHexChar(unsigned char c) { return isCharOfType(c, HexCharacter); }
     39 
     40 private:
     41     enum CharTypes {
     42         InvalidCharacter = 0,
     43         QueryCharacter = 1 << 0,
     44         UserInfoCharacter = 1 << 1,
     45         IPv4Character = 1 << 2,
     46         HexCharacter = 1 << 3,
     47         DecimalCharacter = 1 << 4,
     48         OctalCharacter = 1 << 5,
     49     };
     50 
     51     static const unsigned char characterTypeTable[0x100];
     52 
     53     static inline bool isCharOfType(unsigned char c, CharTypes type)
     54     {
     55         return !!(characterTypeTable[c] & type);
     56     }
     57 };
     58 
     59 }
     60 
     61 #endif
     62