Examples of org.jnode.shell.io.CommandIO

org.jnode.shell.io.CommandIO
This interface is JNode's command stream API. The purpose of the API is to allow commands to gain access the "standard" streams as either byte oriented Input/OutputStreams or character oriented Readers/Writers, while hiding the underlying implementation. This API will also support more specialized functions such as testing if the channel is a 'tty' stream (in the UNIX sense.)
A CommandIO instance is a unidirectional or bidirectional data channel holder. It provides a number of getters that reify the channel as a character or byte oriented stream using the standard Java APIs. These getters should return objects that preserve the correct order of data read and written, irrespective of whether flush is called explicitly or implicitly. @author crawley@jnode.org


    private void createPipes() throws ShellFailureException {
        try {
            for (PipelineStage stage : stages) {
                for (CommandIOHolder holder : stage.holders) {
                    CommandIO io = holder.getIO();
                    if (io instanceof CommandIOMarker) {
                        CommandIOMarker marker = (CommandIOMarker) io;
                        String name = marker.getName();


                        if (name.startsWith("PIPE-")) {

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        return token;
    }


    private int runCommand(CommandShell shell, CommandDescriptor desc)
        throws ShellException {
        CommandIO in = CommandLine.DEFAULT_STDIN;
        CommandIO out = CommandLine.DEFAULT_STDOUT;
        CommandIO err = CommandLine.DEFAULT_STDERR;
        try {
            try {
                if (desc.fromFileName != null) {
                    in = new CommandInput(new FileInputStream(desc.fromFileName.text));
                }

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            // Create all the threads for the pipeline, wiring up their input
            // and output streams.
            int stageNo = 0;
            PipedOutputStream pipeOut = null;
            for (CommandDescriptor desc : descs) {
                CommandIO in = CommandLine.DEFAULT_STDIN;
                CommandIO out = CommandLine.DEFAULT_STDOUT;
                CommandIO err = CommandLine.DEFAULT_STDERR;
                desc.openedStreams = new ArrayList<CommandIO>(2);
                try {
                    // redirect from
                    if (desc.fromFileName != null) {
                        in = new CommandInput(new FileInputStream(desc.fromFileName.text));

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            ios[i] = resolveStream(ios[i]);
        }
    }


    public PrintStream resolvePrintStream(CommandIO io) {
        CommandIO tmp = resolveStream(io);
        return ((CommandOutput) tmp).getPrintStream();
    }

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        CommandIO tmp = resolveStream(io);
        return ((CommandOutput) tmp).getPrintStream();
    }


    public InputStream resolveInputStream(CommandIO io) {
        CommandIO tmp = resolveStream(io);
        return ((CommandInput) tmp).getInputStream();
    }

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Related Classes of org.jnode.shell.io.CommandIO

org.jnode.shell.bjorne.BjornePipeline

org.jnode.shell.CommandShell

org.jnode.shell.RedirectingInterpreter

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