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 URLComponent_h 30 #define URLComponent_h 31 32 namespace WTF { 33 34 // Represents a substring for URL parsing. 35 class URLComponent { 36 public: 37 URLComponent() : m_begin(0), m_length(-1) { } 38 URLComponent(int begin, int length) : m_begin(begin), m_length(length) { } 39 40 // Helper that returns a component created with the given begin and ending 41 // points. The ending point is non-inclusive. 42 static inline URLComponent fromRange(int begin, int end) 43 { 44 return URLComponent(begin, end - begin); 45 } 46 47 // Returns true if this component is valid, meaning the length is given. Even 48 // valid components may be empty to record the fact that they exist. 49 bool isValid() const { return m_length != -1; } 50 51 bool isNonEmpty() const { return m_length > 0; } 52 bool isEmptyOrInvalid() const { return m_length <= 0; } 53 54 void reset() 55 { 56 m_begin = 0; 57 m_length = -1; 58 } 59 60 bool operator==(const URLComponent& other) const { return m_begin == other.m_begin && m_length == other.m_length; } 61 62 int begin() const { return m_begin; } 63 void setBegin(int begin) { m_begin = begin; } 64 65 int length() const { return m_length; } 66 void setLength(int length) { m_length = length; } 67 68 int end() const { return m_begin + m_length; } 69 70 private: 71 int m_begin; // Byte offset in the string of this component. 72 int m_length; // Will be -1 if the component is unspecified. 73 }; 74 75 } // namespace WTF 76 77 #endif // URLComponent_h 78
