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
45namespace WebCore {
46
47typedef PassRefPtr<Archive> RawDataCreationFunction(SharedBuffer*);
48typedef 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.
52template <typename ArchiveClass> static PassRefPtr<Archive> archiveFactoryCreate(SharedBuffer* buffer)
53{
54    return ArchiveClass::create(buffer);
55}
56
57static 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
75bool ArchiveFactory::isArchiveMimeType(const String& mimeType)
76{
77    return !mimeType.isEmpty() && archiveMIMETypes().contains(mimeType);
78}
79
80PassRefPtr<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
86void 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