root/Source/platform/MIMETypeRegistry.cpp

DEFINITIONS

1. getMIMETypeForExtension
2. getWellKnownMIMETypeForExtension
3. getMIMETypeForPath
4. isSupportedImageMIMEType
5. isSupportedImageResourceMIMEType
6. isSupportedImageMIMETypeForEncoding
7. isSupportedJavaScriptMIMEType
8. isSupportedNonImageMIMEType
9. isSupportedMediaSourceMIMEType
10. isSupportedEncryptedMediaMIMEType
11. isJavaAppletMIMEType

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#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 WebCore {

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::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 WebCore