text: /*
   * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "config.h"
  #include "platform/MIMETypeRegistry.h"
  
  #include "platform/plugins/PluginData.h"
  
  #include "public/platform/Platform.h"
  #include "public/platform/WebMimeRegistry.h"
  #include "wtf/text/CString.h"
  
  namespace blink {
  
  String MIMETypeRegistry::getMIMETypeForExtension(const String &ext)
  {
      return blink::Platform::current()->mimeRegistry()->mimeTypeForExtension(ext);
  }
  
  String MIMETypeRegistry::getWellKnownMIMETypeForExtension(const String &ext)
  {
      // This method must be thread safe and should not consult the OS/registry.
      return blink::Platform::current()->mimeRegistry()->wellKnownMimeTypeForExtension(ext);
  }
  
  String MIMETypeRegistry::getMIMETypeForPath(const String& path)
  {
      int pos = path.reverseFind('.');
      if (pos < 0)
          return "application/octet-stream";
      String extension = path.substring(pos + 1);
      String mimeType = getMIMETypeForExtension(extension);
      if (mimeType.isEmpty()) {
          // If there's no mimetype registered for the extension, check to see
          // if a plugin can handle the extension.
          mimeType = getPluginMimeTypeFromExtension(extension);
      }
      if (mimeType.isEmpty())
          return "application/octet-stream";
      return mimeType;
  }
  
  bool MIMETypeRegistry::isSupportedImageMIMEType(const String& mimeType)
  {
      return blink::Platform::current()->mimeRegistry()->supportsImageMIMEType(mimeType.lower())
          != blink::WebMimeRegistry::IsNotSupported;
  }
  
  bool MIMETypeRegistry::isSupportedImageResourceMIMEType(const String& mimeType)
  {
      return isSupportedImageMIMEType(mimeType);
  }
  
  bool MIMETypeRegistry::isSupportedImagePrefixedMIMEType(const String& mimeType)
  {
      return blink::Platform::current()->mimeRegistry()->supportsImagePrefixedMIMEType(mimeType.lower())
          != blink::WebMimeRegistry::IsNotSupported;
  }
  
  bool MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(const String& mimeType)
  {
      if (equalIgnoringCase(mimeType, "image/jpeg") || equalIgnoringCase(mimeType, "image/png"))
          return true;
      if (equalIgnoringCase(mimeType, "image/webp"))
          return true;
      return false;
  }
  
  bool MIMETypeRegistry::isSupportedJavaScriptMIMEType(const String& mimeType)
  {
      return blink::Platform::current()->mimeRegistry()->supportsJavaScriptMIMEType(mimeType.lower())
          != blink::WebMimeRegistry::IsNotSupported;
  }
  
  bool MIMETypeRegistry::isSupportedNonImageMIMEType(const String& mimeType)
  {
      return blink::Platform::current()->mimeRegistry()->supportsNonImageMIMEType(mimeType.lower())
          != blink::WebMimeRegistry::IsNotSupported;
  }
  
  bool MIMETypeRegistry::isSupportedMediaSourceMIMEType(const String& mimeType, const String& codecs)
  {
      return !mimeType.isEmpty()
          && blink::Platform::current()->mimeRegistry()->supportsMediaSourceMIMEType(mimeType.lower(), codecs);
  }
  
  bool MIMETypeRegistry::isSupportedEncryptedMediaMIMEType(const String& keySystem, const String& mimeType, const String& codecs)
  {
      // Key system names are case-sensitive!
      return blink::Platform::current()->mimeRegistry()->supportsEncryptedMediaMIMEType(keySystem, mimeType.lower(), codecs);
  }
  
  bool MIMETypeRegistry::isJavaAppletMIMEType(const String& mimeType)
  {
      // Since this set is very limited and is likely to remain so we won't bother with the overhead
      // of using a hash set.
      // Any of the MIME types below may be followed by any number of specific versions of the JVM,
      // which is why we use startsWith()
      return mimeType.startsWith("application/x-java-applet", false)
          || mimeType.startsWith("application/x-java-bean", false)
          || mimeType.startsWith("application/x-java-vm", false);
  }
  
  } // namespace blink
  