public static InputStream encode(String codings, InputStream content)
throws MessageFormatException {
if (codings == null || codings.trim().equals("")) return content;
String[] algos = codings.split("[ \t]*,[ \t]*");
if (algos.length == 1 && IDENTITY.equalsIgnoreCase(algos[0])) return content;
for (int i = 0; i < algos.length; i++) {
if (CHUNKED.equalsIgnoreCase(algos[i])) {
content = new ChunkingInputStream(content);
} else if (GZIP.equalsIgnoreCase(algos[i])) {
content = new GzipInputStream(content);
} else if (IDENTITY.equalsIgnoreCase(algos[i])) {
// nothing to do
} else throw new MessageFormatException("Unsupported coding : " + algos[i]);
}
return content;
}