1/* 2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 * Copyright (C) 2009 Google Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#include "config.h" 22#include "WebDOMCString.h" 23 24#include "TextEncoding.h" 25#include "WebDOMString.h" 26#include <wtf/text/CString.h> 27 28class WebDOMCStringPrivate : public WTF::CStringBuffer { 29}; 30 31void WebDOMCString::reset() 32{ 33 if (m_private) { 34 m_private->deref(); 35 m_private = 0; 36 } 37} 38 39void WebDOMCString::assign(const WebDOMCString& other) 40{ 41 assign(const_cast<WebDOMCStringPrivate*>(other.m_private)); 42} 43 44void WebDOMCString::assign(const char* data, size_t length) 45{ 46 char* newData; 47 RefPtr<WTF::CStringBuffer> buffer = 48 WTF::CString::newUninitialized(length, newData).buffer(); 49 memcpy(newData, data, length); 50 assign(static_cast<WebDOMCStringPrivate*>(buffer.get())); 51} 52 53size_t WebDOMCString::length() const 54{ 55 if (!m_private) 56 return 0; 57 // NOTE: The buffer's length includes the null byte. 58 return const_cast<WebDOMCStringPrivate*>(m_private)->length() - 1; 59} 60 61const char* WebDOMCString::data() const 62{ 63 if (!m_private) 64 return 0; 65 return const_cast<WebDOMCStringPrivate*>(m_private)->data(); 66} 67 68WebDOMString WebDOMCString::utf16() const 69{ 70 return WebCore::UTF8Encoding().decode(data(), length()); 71} 72 73WebDOMCString WebDOMCString::fromUTF16(const WebUChar* data, size_t length) 74{ 75 return WebCore::UTF8Encoding().encode( 76 data, length, WebCore::QuestionMarksForUnencodables); 77} 78 79WebDOMCString WebDOMCString::fromUTF16(const WebUChar* data) 80{ 81 size_t len = 0; 82 while (data[len] != WebUChar(0)) 83 len++; 84 return fromUTF16(data, len); 85} 86 87WebDOMCString::WebDOMCString(const WTF::CString& s) 88 : m_private(static_cast<WebDOMCStringPrivate*>(s.buffer())) 89{ 90 if (m_private) 91 m_private->ref(); 92} 93 94WebDOMCString& WebDOMCString::operator=(const WTF::CString& s) 95{ 96 assign(static_cast<WebDOMCStringPrivate*>(s.buffer())); 97 return *this; 98} 99 100WebDOMCString::operator WTF::CString() const 101{ 102 return m_private; 103} 104 105void WebDOMCString::assign(WebDOMCStringPrivate* p) 106{ 107 // Take care to handle the case where m_private == p 108 if (p) 109 p->ref(); 110 if (m_private) 111 m_private->deref(); 112 m_private = p; 113} 114