/** Checks if the {@link File} with the given content-type could be compressed. */
private boolean canBeCompressed(final File cacheFile, final String contentType) {
switch (compressionConfig.getCompressionMode()) {
case FORCE:
return true;
case OFF:
return false;
case ON:
{
if (cacheFile.length() < compressionConfig.getCompressionMinSize()) {
return false;
}
return compressionConfig.checkMimeType(contentType);
}
default:
throw new IllegalStateException("Unknown mode");
}
}
protected Set<ContentEncoding> configureCompressionEncodings(final NetworkListener listener) {
final CompressionConfig compressionConfig = listener.getCompressionConfig();
if (compressionConfig.getCompressionMode() != CompressionMode.OFF) {
final ContentEncoding gzipContentEncoding =
new GZipContentEncoding(
GZipContentEncoding.DEFAULT_IN_BUFFER_SIZE,
GZipContentEncoding.DEFAULT_OUT_BUFFER_SIZE,
new CompressionEncodingFilter(
compressionConfig, GZipContentEncoding.getGzipAliases()));
final ContentEncoding lzmaEncoding =
new LZMAContentEncoding(
new CompressionEncodingFilter(
compressionConfig, LZMAContentEncoding.getLzmaAliases()));
final Set<ContentEncoding> set = new HashSet<ContentEncoding>(2);
set.add(gzipContentEncoding);
set.add(lzmaEncoding);
return set;
} else {
return Collections.emptySet();
}
}
