Home | History | Annotate | Download | only in archive 
      1 /*
      2  * Copyright (C) 2008 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "ArchiveFactory.h"
     31 
     32 #include "MIMETypeRegistry.h"
     33 #include "PlatformString.h"
     34 
     35 #if USE(CF) && !PLATFORM(QT)
     36 #include "LegacyWebArchive.h"
     37 #elif PLATFORM(ANDROID)
     38 #include "WebArchiveAndroid.h"
     39 #endif
     40 
     41 #include <wtf/HashMap.h>
     42 #include <wtf/HashSet.h>
     43 #include <wtf/StdLibExtras.h>
     44 
     45 namespace WebCore {
     46 
     47 typedef PassRefPtr<Archive> RawDataCreationFunction(SharedBuffer*);
     48 typedef HashMap<String, RawDataCreationFunction*, CaseFoldingHash> ArchiveMIMETypesMap;
     49 
     50 // The create functions in the archive classes return PassRefPtr to concrete subclasses
     51 // of Archive. This adaptor makes the functions have a uniform return type.
     52 template <typename ArchiveClass> static PassRefPtr<Archive> archiveFactoryCreate(SharedBuffer* buffer)
     53 {
     54     return ArchiveClass::create(buffer);
     55 }
     56 
     57 static ArchiveMIMETypesMap& archiveMIMETypes()
     58 {
     59     DEFINE_STATIC_LOCAL(ArchiveMIMETypesMap, mimeTypes, ());
     60     static bool initialized = false;
     61 
     62     if (initialized)
     63         return mimeTypes;
     64 
     65 #if USE(CF)
     66     mimeTypes.set("application/x-webarchive", archiveFactoryCreate<LegacyWebArchive>);
     67 #elif PLATFORM(ANDROID)
     68     mimeTypes.set("application/x-webarchive-xml", archiveFactoryCreate<WebArchiveAndroid>);
     69 #endif
     70 
     71     initialized = true;
     72     return mimeTypes;
     73 }
     74 
     75 bool ArchiveFactory::isArchiveMimeType(const String& mimeType)
     76 {
     77     return !mimeType.isEmpty() && archiveMIMETypes().contains(mimeType);
     78 }
     79 
     80 PassRefPtr<Archive> ArchiveFactory::create(SharedBuffer* data, const String& mimeType)
     81 {
     82     RawDataCreationFunction* function = mimeType.isEmpty() ? 0 : archiveMIMETypes().get(mimeType);
     83     return function ? function(data) : 0;
     84 }
     85 
     86 void ArchiveFactory::registerKnownArchiveMIMETypes()
     87 {
     88     HashSet<String>& mimeTypes = MIMETypeRegistry::getSupportedNonImageMIMETypes();
     89     ArchiveMIMETypesMap::iterator i = archiveMIMETypes().begin();
     90     ArchiveMIMETypesMap::iterator end = archiveMIMETypes().end();
     91 
     92     for (; i != end; ++i)
     93         mimeTypes.add(i->first);
     94 }
     95 
     96 }
     97