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 <wtf/Forward.h> 31 #include <wtf/Vector.h> 32 33 namespace WebKit { 34 35 // WebData - A data buffer type suitable for vending to an API. 36 37 class WebData : public APIObject { 38 public: 39 static const Type APIType = TypeData; 40 41 typedef void (*FreeDataFunction)(unsigned char*, const void* context); 42 createWithoutCopying(const unsigned char * bytes,size_t size,FreeDataFunction freeDataFunction,const void * context)43 static PassRefPtr<WebData> createWithoutCopying(const unsigned char* bytes, size_t size, FreeDataFunction freeDataFunction, const void* context) 44 { 45 return adoptRef(new WebData(bytes, size, freeDataFunction, context)); 46 } 47 create(const unsigned char * bytes,size_t size)48 static PassRefPtr<WebData> create(const unsigned char* bytes, size_t size) 49 { 50 unsigned char *copiedBytes = 0; 51 52 if (size) { 53 copiedBytes = static_cast<unsigned char*>(fastMalloc(size)); 54 memcpy(copiedBytes, bytes, size); 55 } 56 57 return createWithoutCopying(copiedBytes, size, fastFreeBytes, 0); 58 } 59 create(const Vector<unsigned char> & buffer)60 static PassRefPtr<WebData> create(const Vector<unsigned char>& buffer) 61 { 62 return create(buffer.data(), buffer.size()); 63 } 64 ~WebData()65 ~WebData() 66 { 67 m_freeDataFunction(const_cast<unsigned char*>(m_bytes), m_context); 68 } 69 bytes()70 const unsigned char* bytes() const { return m_bytes; } size()71 size_t size() const { return m_size; } 72 73 private: WebData(const unsigned char * bytes,size_t size,FreeDataFunction freeDataFunction,const void * context)74 WebData(const unsigned char* bytes, size_t size, FreeDataFunction freeDataFunction, const void* context) 75 : m_bytes(bytes) 76 , m_size(size) 77 , m_freeDataFunction(freeDataFunction) 78 , m_context(context) 79 { 80 } 81 fastFreeBytes(unsigned char * bytes,const void *)82 static void fastFreeBytes(unsigned char* bytes, const void*) 83 { 84 if (bytes) 85 fastFree(static_cast<void*>(bytes)); 86 } 87 type()88 virtual Type type() const { return APIType; } 89 90 const unsigned char* m_bytes; 91 size_t m_size; 92 93 FreeDataFunction m_freeDataFunction; 94 const void* m_context; 95 }; 96 97 } // namespace WebKit 98 99 #endif // WebData_h 100