wtf/url/src/RawURLBuffer.h

   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 RawURLBuffer_h
  30 #define RawURLBuffer_h
  31
  32 #include "URLBuffer.h"
  33 #include <stdlib.h>
  34
  35 namespace WTF {
  36
  37 // Simple implementation of the URLBuffer using new[]. This class
  38 // also supports a static buffer so if it is allocated on the stack, most
  39 // URLs can be canonicalized with no heap allocations.
  40 template<typename CHAR, int inlineCapacity = 1024>
  41 class RawURLBuffer : public URLBuffer<CHAR> {
  42 public:
  43     RawURLBuffer() : URLBuffer<CHAR>()
  44     {
  45         this->m_buffer = m_inlineBuffer;
  46         this->m_capacity = inlineCapacity;
  47     }
  48
  49     virtual ~RawURLBuffer()
  50     {
  51         if (this->m_buffer != m_inlineBuffer)
  52             delete[] this->m_buffer;
  53     }
  54
  55     virtual void resize(int size)
  56     {
  57         CHAR* newBuffer = new CHAR[size];
  58         memcpy(newBuffer, this->m_buffer, sizeof(CHAR) * (this->m_length < size ? this->m_length : size));
  59         if (this->m_buffer != m_inlineBuffer)
  60             delete[] this->m_buffer;
  61         this->m_buffer = newBuffer;
  62         this->m_capacity = size;
  63     }
  64
  65 protected:
  66     CHAR m_inlineBuffer[inlineCapacity];
  67 };
  68
  69 } // namespace WTF
  70
  71 #endif // RawURLBuffer_h