1/* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef WebData_h 27#define WebData_h 28 29#include "APIObject.h" 30#include "DataReference.h" 31#include <wtf/Forward.h> 32#include <wtf/Vector.h> 33 34namespace WebKit { 35 36// WebData - A data buffer type suitable for vending to an API. 37 38class WebData : public TypedAPIObject<APIObject::TypeData> { 39public: 40 typedef void (*FreeDataFunction)(unsigned char*, const void* context); 41 42 static PassRefPtr<WebData> createWithoutCopying(const unsigned char* bytes, size_t size, FreeDataFunction freeDataFunction, const void* context) 43 { 44 return adoptRef(new WebData(bytes, size, freeDataFunction, context)); 45 } 46 47 static PassRefPtr<WebData> create(const unsigned char* bytes, size_t size) 48 { 49 unsigned char *copiedBytes = 0; 50 51 if (size) { 52 copiedBytes = static_cast<unsigned char*>(fastMalloc(size)); 53 memcpy(copiedBytes, bytes, size); 54 } 55 56 return createWithoutCopying(copiedBytes, size, fastFreeBytes, 0); 57 } 58 59 static PassRefPtr<WebData> create(const Vector<unsigned char>& buffer) 60 { 61 return create(buffer.data(), buffer.size()); 62 } 63 64 ~WebData() 65 { 66 m_freeDataFunction(const_cast<unsigned char*>(m_bytes), m_context); 67 } 68 69 const unsigned char* bytes() const { return m_bytes; } 70 size_t size() const { return m_size; } 71 72 CoreIPC::DataReference dataReference() const { return CoreIPC::DataReference(m_bytes, m_size); } 73 74private: 75 WebData(const unsigned char* bytes, size_t size, FreeDataFunction freeDataFunction, const void* context) 76 : m_bytes(bytes) 77 , m_size(size) 78 , m_freeDataFunction(freeDataFunction) 79 , m_context(context) 80 { 81 } 82 83 static void fastFreeBytes(unsigned char* bytes, const void*) 84 { 85 if (bytes) 86 fastFree(static_cast<void*>(bytes)); 87 } 88 89 const unsigned char* m_bytes; 90 size_t m_size; 91 92 FreeDataFunction m_freeDataFunction; 93 const void* m_context; 94}; 95 96} // namespace WebKit 97 98#endif // WebData_h 99