1/* 2 * Copyright (C) 2009 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef WebData_h 32#define WebData_h 33 34#include "WebCommon.h" 35 36#if WEBKIT_IMPLEMENTATION 37namespace WebCore { class SharedBuffer; } 38namespace WTF { template <typename T> class PassRefPtr; } 39namespace WTF { template <typename T> class RefPtr; } 40#endif 41 42namespace WebKit { 43 44class WebDataPrivate; 45 46// A container for raw bytes. It is inexpensive to copy a WebData object. 47// 48// WARNING: It is not safe to pass a WebData across threads!!! 49// 50class WebData { 51public: 52 ~WebData() { reset(); } 53 54 WebData() : m_private(0) { } 55 56 WebData(const char* data, size_t size) : m_private(0) 57 { 58 assign(data, size); 59 } 60 61 template <int N> 62 WebData(const char (&data)[N]) : m_private(0) 63 { 64 assign(data, N - 1); 65 } 66 67 WebData(const WebData& d) : m_private(0) { assign(d); } 68 69 WebData& operator=(const WebData& d) 70 { 71 assign(d); 72 return *this; 73 } 74 75 WEBKIT_EXPORT void reset(); 76 WEBKIT_EXPORT void assign(const WebData&); 77 WEBKIT_EXPORT void assign(const char* data, size_t size); 78 79 WEBKIT_EXPORT size_t size() const; 80 WEBKIT_EXPORT const char* data() const; 81 82 bool isEmpty() const { return !size(); } 83 bool isNull() const { return !m_private; } 84 85#if WEBKIT_IMPLEMENTATION 86 WebData(const WTF::PassRefPtr<WebCore::SharedBuffer>&); 87 WebData& operator=(const WTF::PassRefPtr<WebCore::SharedBuffer>&); 88 operator WTF::PassRefPtr<WebCore::SharedBuffer>() const; 89 operator WTF::RefPtr<WebCore::SharedBuffer>() const; 90#else 91 template <class C> 92 WebData(const C& c) : m_private(0) 93 { 94 assign(c.data(), c.size()); 95 } 96 97 template <class C> 98 WebData& operator=(const C& c) 99 { 100 assign(c.data(), c.size()); 101 return *this; 102 } 103#endif 104 105private: 106 void assign(WebDataPrivate*); 107 WebDataPrivate* m_private; 108}; 109 110} // namespace WebKit 111 112#endif 113