Fork from http://code.google.com/p/protobuf-java-format/

Description

Provide serialization and de-serialization of different formats based on Google’s protobuf Message. Enables overriding the default (byte array) output to text based formats such as XML, JSON and HTML.

Example

For XML output, use XmlFormat

Message someProto = SomeProto.getDefaultInstance();
XmlFormat xmlFormat = new XmlFormat();
String asXml = xmlFormat.printToString(someProto);

For XML input, use XmlFormat

Message.Builder builder = SomeProto.newBuilder();
String asXml = _load xml document from a source_;
XmlFormat xmlFormat = new XmlFormat();
xmlFormat.merge(asXml, builder);

For Json output, use JsonFormat

Message someProto = SomeProto.getDefaultInstance();
JsonFormat jsonFormat = new JsonFormat();
String asJson = jsonFormat.printToString(someProto);

For Json input, use JsonFormat

Message.Builder builder = SomeProto.newBuilder();
String asJson = _load json document from a source_;
JsonFormat jsonFormat = new JsonFormat();
jsonFormat.merge(asJson, builder);

For HTML output, use HtmlFormat

Message someProto = SomeProto.getDefaultInstance();
HtmlFormat htmlFormat = new HtmlFormat();
String asHtml = htmlFormat.printToString(someProto);