| /* |
| Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) |
| Copyright (C) 2001 Dirk Mueller (mueller@kde.org) |
| Copyright (C) 2002 Waldo Bastian (bastian@kde.org) |
| Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
| Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public License |
| along with this library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| |
| This class provides all functionality needed for loading images, style sheets and html |
| pages from the web. It has a memory cache for these objects. |
| */ |
| |
| #include "config.h" |
| #include "CachedScript.h" |
| |
| #include "CachedResourceClient.h" |
| #include "CachedResourceClientWalker.h" |
| #include "HTTPParsers.h" |
| #include "MIMETypeRegistry.h" |
| #include "MemoryCache.h" |
| #include "ResourceBuffer.h" |
| #include "TextResourceDecoder.h" |
| #include "WebCoreMemoryInstrumentation.h" |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| CachedScript::CachedScript(const ResourceRequest& resourceRequest, const String& charset) |
| : CachedResource(resourceRequest, Script) |
| , m_decoder(TextResourceDecoder::create("application/javascript", charset)) |
| { |
| // It's javascript we want. |
| // But some websites think their scripts are <some wrong mimetype here> |
| // and refuse to serve them if we only accept application/x-javascript. |
| setAccept("*/*"); |
| } |
| |
| CachedScript::~CachedScript() |
| { |
| } |
| |
| void CachedScript::setEncoding(const String& chs) |
| { |
| m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader); |
| } |
| |
| String CachedScript::encoding() const |
| { |
| return m_decoder->encoding().name(); |
| } |
| |
| String CachedScript::mimeType() const |
| { |
| return extractMIMETypeFromMediaType(m_response.httpHeaderField("Content-Type")).lower(); |
| } |
| |
| const String& CachedScript::script() |
| { |
| ASSERT(!isPurgeable()); |
| |
| if (!m_script && m_data) { |
| m_script = m_decoder->decode(m_data->data(), encodedSize()); |
| m_script.append(m_decoder->flush()); |
| setDecodedSize(m_script.sizeInBytes()); |
| } |
| m_decodedDataDeletionTimer.startOneShot(0); |
| |
| return m_script; |
| } |
| |
| void CachedScript::data(PassRefPtr<ResourceBuffer> data, bool allDataReceived) |
| { |
| if (!allDataReceived) |
| return; |
| |
| m_data = data; |
| setEncodedSize(m_data.get() ? m_data->size() : 0); |
| setLoading(false); |
| checkNotify(); |
| } |
| |
| void CachedScript::destroyDecodedData() |
| { |
| m_script = String(); |
| setDecodedSize(0); |
| if (!MemoryCache::shouldMakeResourcePurgeableOnEviction() && isSafeToMakePurgeable()) |
| makePurgeable(true); |
| } |
| |
| #if ENABLE(NOSNIFF) |
| bool CachedScript::mimeTypeAllowedByNosniff() const |
| { |
| return !parseContentTypeOptionsHeader(m_response.httpHeaderField("X-Content-Type-Options")) == ContentTypeOptionsNosniff || MIMETypeRegistry::isSupportedJavaScriptMIMEType(mimeType()); |
| } |
| #endif |
| |
| void CachedScript::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const |
| { |
| MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CachedResourceScript); |
| CachedResource::reportMemoryUsage(memoryObjectInfo); |
| info.addMember(m_script, "script"); |
| info.addMember(m_decoder, "decoder"); |
| } |
| |
| } // namespace WebCore |