Examples of com.sanityinc.jargs.CmdLineParser


        // The -d and -v options have no associated value -- they are either
        // present, or they are not.  The -s and -f options take integer and
        // double-precision floating-point values respectively.


        CmdLineParser parser = new CmdLineParser();
        Option<Boolean> debug = parser.addBooleanOption('d', "debug");
        Option<Boolean> verbose = parser.addBooleanOption('v', "verbose");
        Option<Integer> size = parser.addIntegerOption('s', "size");
        Option<Double> fraction = parser.addDoubleOption('f', "fraction");


        // Options may have just a long form with no corresponding short form.
        // Here, we add --alt and --name options.


        Option<Boolean> alt = parser.addBooleanOption("alt");
        Option<String> name = parser.addStringOption('n', "name");




        // Next, you must parse the user-provided command line arguments, and
        // catch any errors therein.


        // Options may appear on the command line in any order, and may even
        // appear after some or all of the non-option arguments.


        // If the user needs to specify non-option arguments that start with a
        // minus, then they may indicate the end of the parsable options with
        // -- , like this:


        // prog -f 20 -- -10 -fred


        // The -f 20 will be parsed as the fraction option, with the value 20.
        // The -10 and -fred arguments will be regarded as non-option
        // arguments, and passed through getRemainingArgs as unparsed Strings.


        // Short boolean options may be specified separately (-d -v) or
        // together (-dv).


        // Options with values may be given on the command line as -f 1.0 or
        // --fraction=1.0.


        try {
            parser.parse(args);
        }
        catch ( CmdLineParser.OptionException e ) {
            System.err.println(e.getMessage());
            printUsage();
            System.exit(2);
        }




        // For options that may be specified only zero or one time, the value
        // of that option may be extracted as shown below.  If the options
        // were not specified, the corresponding values will be null.


        Boolean debugValue = parser.getOptionValue(debug);
        String nameValue = parser.getOptionValue(name);


        // Alternatively, you may specify a default value.  This will be
        // returned (instead of null) when the command line argument is
        // missing.


        Boolean altValue = parser.getOptionValue(alt, Boolean.FALSE);
        Integer sizeValue = parser.getOptionValue(size, new Integer(42));


        // If your application requires it, options may be specified more than
        // once.  In this case, you may get all the values specified by the
        // user, as a Vector:


        Collection<Double> fractionValues = parser.getOptionValues(fraction);


        // Alternatively, you may make the loop explicit:


        int verbosity = 0;
        while (true) {
            Boolean verboseValue = parser.getOptionValue(verbose);


            if (verboseValue == null) {
                break;
            }
            else {
                verbosity++;
            }
        }


        // The remaining command-line arguments -- those that do not start
        // with a minus sign -- can be captured like this:


        String[] otherArgs = parser.getRemainingArgs();




        // For testing purposes, we just print out the option values and
        // remaining command-line arguments.  In a real program, of course,
        // one would pass them to a function that does something more useful.

            }
        }
    }


    public static void main( String[] args ) {
        CmdLineParser parser = new CmdLineParser();
        CmdLineParser.Option<Date> date =
            parser.addOption(new ShortDateOption('d', "date"));


        try {
            parser.parse(args);
        } catch ( CmdLineParser.OptionException e ) {
            System.err.println(e.getMessage());
            printUsage();
            System.exit(2);
        }


        // Extract the values entered for the various options -- if the
        // options were not specified, the corresponding values will be
        // null.
        Date dateValue = parser.getOptionValue(date);


        // For testing purposes, we just print out the option values
        System.out.println("date: " + dateValue);


        // Extract the trailing command-line arguments ('a_number') in the
        // usage string above.
        String[] otherArgs = parser.getRemainingArgs();
        System.out.println("remaining args: ");
        for ( int i = 0; i < otherArgs.length; ++i ) {
            System.out.println(otherArgs[i]);
        }

Examples of com.sanityinc.jargs.CmdLineParser

Related Classes of com.sanityinc.jargs.CmdLineParser