Home | History | Annotate | Download | only in chromium 
      1 /*
      2  * Copyright (c) 2008, 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 #include "config.h"
     32 #include "MIMETypeRegistry.h"
     33 
     34 #include "ChromiumBridge.h"
     35 #include "CString.h"
     36 #include "MediaPlayer.h"
     37 #include "PluginDataChromium.h"
     38 
     39 // NOTE: Unlike other ports, we don't use the shared implementation bits in
     40 // MIMETypeRegistry.cpp.  Instead, we need to route most functions via the
     41 // ChromiumBridge to the embedder.
     42 
     43 namespace WebCore {
     44 
     45 String MIMETypeRegistry::getMIMETypeForExtension(const String &ext)
     46 {
     47     return ChromiumBridge::mimeTypeForExtension(ext);
     48 }
     49 
     50 // Returns the file extension if one is found.  Does not include the dot in the
     51 // filename.  E.g., 'html'.
     52 String MIMETypeRegistry::getPreferredExtensionForMIMEType(const String& type)
     53 {
     54     // Prune out any parameters in case they happen to have snuck in there...
     55     // FIXME: Is this really necessary??
     56     String mimeType = type.substring(0, static_cast<unsigned>(type.find(';')));
     57 
     58     String ext = ChromiumBridge::preferredExtensionForMIMEType(type);
     59     if (!ext.isEmpty() && ext[0] == '.')
     60         ext = ext.substring(1);
     61 
     62     return ext;
     63 }
     64 
     65 String MIMETypeRegistry::getMIMETypeForPath(const String& path)
     66 {
     67     int pos = path.reverseFind('.');
     68     if (pos < 0)
     69         return "application/octet-stream";
     70     String extension = path.substring(pos + 1);
     71     String mimeType = getMIMETypeForExtension(extension);
     72     if (mimeType.isEmpty()) {
     73         // If there's no mimetype registered for the extension, check to see
     74         // if a plugin can handle the extension.
     75         mimeType = getPluginMimeTypeFromExtension(extension);
     76     }
     77     if (mimeType.isEmpty())
     78         return "application/octet-stream";
     79     return mimeType;
     80 }
     81 
     82 bool MIMETypeRegistry::isSupportedImageMIMEType(const String& mimeType)
     83 {
     84     return ChromiumBridge::isSupportedImageMIMEType(mimeType);
     85 }
     86 
     87 bool MIMETypeRegistry::isSupportedImageResourceMIMEType(const String& mimeType)
     88 {
     89     return isSupportedImageMIMEType(mimeType);
     90 }
     91 
     92 bool MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(const String& mimeType)
     93 {
     94     // FIXME: Fill this out. See: http://trac.webkit.org/changeset/30888
     95     return isSupportedImageMIMEType(mimeType);
     96 }
     97 
     98 bool MIMETypeRegistry::isSupportedJavaScriptMIMEType(const String& mimeType)
     99 {
    100     return ChromiumBridge::isSupportedJavaScriptMIMEType(mimeType);
    101 }
    102 
    103 bool MIMETypeRegistry::isSupportedNonImageMIMEType(const String& mimeType)
    104 {
    105     return ChromiumBridge::isSupportedNonImageMIMEType(mimeType);
    106 }
    107 
    108 bool MIMETypeRegistry::isSupportedMediaMIMEType(const String& mimeType)
    109 {
    110     HashSet<String> supportedMediaMIMETypes;
    111 #if ENABLE(VIDEO)
    112     MediaPlayer::getSupportedTypes(supportedMediaMIMETypes);
    113 #endif
    114     return !mimeType.isEmpty() && supportedMediaMIMETypes.contains(mimeType);
    115 }
    116 
    117 bool MIMETypeRegistry::isJavaAppletMIMEType(const String& mimeType)
    118 {
    119     // Since this set is very limited and is likely to remain so we won't bother with the overhead
    120     // of using a hash set.
    121     // Any of the MIME types below may be followed by any number of specific versions of the JVM,
    122     // which is why we use startsWith()
    123     return mimeType.startsWith("application/x-java-applet", false)
    124         || mimeType.startsWith("application/x-java-bean", false)
    125         || mimeType.startsWith("application/x-java-vm", false);
    126 }
    127 
    128 String MIMETypeRegistry::getMediaMIMETypeForExtension(const String&)
    129 {
    130     return String();
    131 }
    132 
    133 static HashSet<String>& dummyHashSet()
    134 {
    135     ASSERT_NOT_REACHED();
    136     static HashSet<String> dummy;
    137     return dummy;
    138 }
    139 
    140 // NOTE: the following methods should never be reached
    141 HashSet<String>& MIMETypeRegistry::getSupportedImageMIMETypes() { return dummyHashSet(); }
    142 HashSet<String>& MIMETypeRegistry::getSupportedImageResourceMIMETypes() { return dummyHashSet(); }
    143 HashSet<String>& MIMETypeRegistry::getSupportedImageMIMETypesForEncoding() { return dummyHashSet(); }
    144 HashSet<String>& MIMETypeRegistry::getSupportedNonImageMIMETypes() { return dummyHashSet(); }
    145 HashSet<String>& MIMETypeRegistry::getSupportedMediaMIMETypes() { return dummyHashSet(); }
    146 
    147 } // namespace WebCore
    148