zorba::base64::streambuf

#include <zorba/util/base64_stream.h>

A base64::streambuf is-a std::streambuf for decoding from and encoding to Base64 on-the-fly while reading or writing, respectively. To use it, replace a stream's streambuf:

  istream is;
  // ...
  base64::streambuf b64buf( is.rdbuf() );
  is.ios::rdbuf( &b64buf );

Note that the base64::streambuf must exist for as long as it's being used by the stream. If you are replacing the streabuf for a stream you did not create, you should set it back to the original streambuf:

  void f( ostream &os ) {
    base64::streambuf b64buf( os.rdbuf() );
    try {
      os.ios::rdbuf( &b64buf );
      // ...
    }
    catch ( ... ) {
      os.ios::rdbuf( b64buf.orig_streambuf() );
      throw;
    }
    os.ios::rdbuf( b64buf.orig_streambuf() );
  }

Alternatively, you may wish to use either , , or instead.Note: due to the nature of Base64-encoding, when writing, you must ensure that the streambuf is flushed (by calling either pubsync() on the streambuf or flush() on the owning stream) when done.While base64::streambuf does support seeking, the positions are relative to the original byte stream.