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SharedBuffer.cpp

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00001 /*
00002  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  * 1. Redistributions of source code must retain the above copyright
00008  *    notice, this list of conditions and the following disclaimer.
00009  * 2. Redistributions in binary form must reproduce the above copyright
00010  *    notice, this list of conditions and the following disclaimer in the
00011  *    documentation and/or other materials provided with the distribution.
00012  *
00013  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
00014  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00015  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00016  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
00017  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00018  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00019  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00020  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00021  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00023  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
00024  */
00025 
00026 #include "config.h"
00027 #include "SharedBuffer.h"
00028 
00029 namespace WebCore {
00030 
00031 SharedBuffer::SharedBuffer()
00032 {
00033 }
00034 
00035 SharedBuffer::SharedBuffer(const char* data, int size)
00036 {
00037     m_buffer.append(data, size);
00038 }
00039 
00040 SharedBuffer::SharedBuffer(const unsigned char* data, int size)
00041 {
00042     m_buffer.append(data, size);
00043 }
00044 
00045 PassRefPtr<SharedBuffer> SharedBuffer::adoptVector(Vector<char>& vector)
00046 {
00047     RefPtr<SharedBuffer> buffer = create();
00048     buffer->m_buffer.swap(vector);
00049     return buffer.release();
00050 }
00051 
00052 unsigned SharedBuffer::size() const
00053 {
00054     if (hasPlatformData())
00055         return platformDataSize();
00056     
00057     return m_buffer.size();
00058 }
00059 
00060 const char* SharedBuffer::data() const
00061 {
00062     if (hasPlatformData())
00063         return platformData();
00064     
00065     return m_buffer.data();
00066 }
00067 
00068 void SharedBuffer::append(const char* data, int len)
00069 {
00070     maybeTransferPlatformData();
00071     
00072     m_buffer.append(data, len);
00073 }
00074 
00075 void SharedBuffer::clear()
00076 {
00077     clearPlatformData();
00078     
00079     m_buffer.clear();
00080 }
00081 
00082 PassRefPtr<SharedBuffer> SharedBuffer::copy() const
00083 {
00084     return SharedBuffer::create(data(), size());
00085 }
00086 
00087 
00088 #if !PLATFORM(CF)
00089 
00090 inline void SharedBuffer::clearPlatformData()
00091 {
00092 }
00093 
00094 inline void SharedBuffer::maybeTransferPlatformData()
00095 {
00096 }
00097 
00098 inline bool SharedBuffer::hasPlatformData() const
00099 {
00100     return false;
00101 }
00102 
00103 inline const char* SharedBuffer::platformData() const
00104 {
00105     ASSERT_NOT_REACHED();
00106 
00107     return 0;
00108 }
00109 
00110 inline unsigned SharedBuffer::platformDataSize() const
00111 {
00112     ASSERT_NOT_REACHED();
00113     
00114     return 0;
00115 }
00116 
00117 #endif
00118 
00119 }

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