samer@43: % pipeout - start shell command and return stream for writing to its standard input
samer@43: % pipeout :: 
samer@43: %    text ~'bash shell command',
samer@43: %    bool ~'quiet operation flag'
samer@43: % -> java.io.OutputStream ~ 'connected to stdout of command',
samer@43: %    (void -> action void) ~'call this to clean up afterwards'.
samer@43: %
samer@43: % If quiet flag is not supplied, it defaults to false.
samer@43: function [str,cleanup]=pipeout(cmd,q)
samer@43: 	if nargin<2, q=false; end
samer@43: 	if ~q, fprintf('Starting sub-process: %s\n',cmd); end
samer@43: 
samer@50: 	cs=feature('DefaultCharacterSet');
samer@43: 	process=java.lang.Runtime.getRuntime().exec('bash');
samer@43: 	writer=java.io.OutputStreamWriter(process.getOutputStream(),cs);
samer@43: 	writer.write(cmd); writer.close();
samer@43: 
samer@0: 	str=process.getOutputStream();
samer@0: 	cleanup=@dispose;
samer@0: 
samer@0: 	function dispose
samer@43: 		if ~q, fprintf('Killing subprocess...\n'); end
samer@0: 		process.destroy();
samer@0: 	end
samer@0: end