ash-java/src/main/java/org/eiichiro/ash/Shell.java
@SuppressWarnings("unchecked")
	public void exec(String line) {
		String[] strings = line.split("\\s");
		
		if (strings.length == 0) {
			return;
		}
		
		String cmd = strings[0];
		
		if (strings[0] == null || strings[0].isEmpty()) {
			return;
		}
		
		String[] args = {};
		
		if (strings.length > 1) {
			args = new String[strings.length - 1];
			System.arraycopy(strings, 1, args, 0, args.length);
		}
		
		Command command = commands.get(cmd);
		
		if (command == null) {
			//$NON-NLS-N$
			console.println(cmd + ": command not found");
			return;
		}
		
		Usage usage = command.usage();
		Options opts = options.get(command.name());
		
		if (opts == null) {
			opts = new Options();
			
			for (Usage.Option option : usage.options()) {
				Option opt = new Option(option.opt(), option.longOpt(), false, option.description());
				opt.setRequired(option.required());
				String arg = option.arg();
				
				if (arg == null || arg.isEmpty()) {
					opt.setArgs(1);
					opt.setArgName(arg);
				}
				
				opts.addOption(opt);
			}
			
			options.put(command.name(), opts);
		}
		
		CommandLineParser parser = new GnuParser();
		CommandLine commandLine = null;
		
		try {
			commandLine = parser.parse(opts, args);
		} catch (ParseException e) {
			console().println(usage.toString());
			return;
		}
		
		Map<String, String> options = new HashMap<>();
		
		for (Option option : commandLine.getOptions()) {
			String opt = option.getOpt();
			
			if (opt != null && !opt.isEmpty()) {
				options.put(opt, option.getValue());
			}
			
			String longOpt = option.getLongOpt();
			
			if (longOpt != null && !longOpt.isEmpty()) {
				options.put(longOpt, option.getValue());
			}
		}
		
		Line l = new Line(cmd, options, commandLine.getArgList());
		
		try {
			command.run(l);
		} catch (Exception e) {
			e.printStackTrace(new PrintWriter(console.reader().getOutput()));
		}
	}
@SuppressWarnings("unchecked")
	public void exec(String line) {
		String[] strings = line.split("\\s");
		
		if (strings.length == 0) {
			return;
		}
		
		String cmd = strings[0];
		
		if (strings[0] == null || strings[0].isEmpty()) {
			return;
		}
		
		String[] args = {};
		
		if (strings.length > 1) {
			args = new String[strings.length - 1];
			System.arraycopy(strings, 1, args, 0, args.length);
		}
		
		Command command = commands.get(cmd);
		
		if (command == null) {
			//$NON-NLS-N$
			console.println(cmd + ": command not found");
			return;
		}
		
		Usage usage = command.usage();
		Options opts = options.get(command.name());
		
		if (opts == null) {
			opts = new Options();
			
			for (Usage.Option option : usage.options()) {
				Option opt = new Option(option.opt(), option.longOpt(), false, option.description());
				opt.setRequired(option.required());
				String arg = option.arg();
				
				if (arg == null || arg.isEmpty()) {
					opt.setArgs(1);
					opt.setArgName(arg);
				}
				
				opts.addOption(opt);
			}
			
			options.put(command.name(), opts);
		}
		
		CommandLineParser parser = new GnuParser();
		CommandLine commandLine = null;
		
		try {
			commandLine = parser.parse(opts, args);
		} catch (ParseException e) {
			console().println(usage.toString());
			return;
		}
		
		Map<String, String> options = new HashMap<>();
		
		for (Option option : commandLine.getOptions()) {
			String opt = option.getOpt();
			
			if (opt != null && !opt.isEmpty()) {
				options.put(opt, option.getValue());
			}
			
			String longOpt = option.getLongOpt();
			
			if (longOpt != null && !longOpt.isEmpty()) {
				options.put(longOpt, option.getValue());
			}
		}
		
		Line l = new Line(cmd, options, commandLine.getArgList());
		
		try {
			command.run(l);
		} catch (Exception e) {
			e.printStackTrace(new PrintWriter(console.reader().getOutput()));
		}
	}
@ SuppressWarnings ( "unchecked" ) public void exec ( String line ) { String [ ] strings = line . split ( "\\s" ) ; if ( strings . length == 0 ) { return ; } String cmd = strings [ 0 ] ; if ( strings [ 0 ] == null || strings [ 0 ] . isEmpty ( ) ) { return ; } String [ ] args = { } ; if ( strings . length > 1 ) { args = new String [ strings . length - 1 ] ; System . arraycopy ( strings , 1 , args , 0 , args . length ) ; } Command command = commands . get ( cmd ) ; if ( command == null ) { //$NON-NLS-N$ console . println ( cmd + ": command not found" ) ; return ; } Usage usage = command . usage ( ) ; Options opts = options . get ( command . name ( ) ) ; if ( opts == null ) { opts = new Options ( ) ; for ( Usage . Option option : usage . options ( ) ) { Option opt = new Option ( option . opt ( ) , option . longOpt ( ) , false , option . description ( ) ) ; opt . setRequired ( option . required ( ) ) ; String arg = option . arg ( ) ; if ( arg == null || arg . isEmpty ( ) ) { opt . setArgs ( 1 ) ; opt . setArgName ( arg ) ; } opts . addOption ( opt ) ; } options . put ( command . name ( ) , opts ) ; } CommandLineParser parser = new GnuParser ( ) ; CommandLine commandLine = null ; try { commandLine = parser . parse ( opts , args ) ; } catch ( ParseException e ) { console ( ) . println ( usage . toString ( ) ) ; return ; } Map < String , String > options = new HashMap <> ( ) ; for ( Option option : commandLine . getOptions ( ) ) { String opt = option . getOpt ( ) ; if ( opt != null && ! opt . isEmpty ( ) ) { options . put ( opt , option . getValue ( ) ) ; } String longOpt = option . getLongOpt ( ) ; if ( longOpt != null && ! longOpt . isEmpty ( ) ) { options . put ( longOpt , option . getValue ( ) ) ; } } Line l = new Line ( cmd , options , commandLine . getArgList ( ) ) ; try { command . run ( l ) ; } catch ( Exception e ) { e . printStackTrace ( new PrintWriter ( console . reader ( ) . getOutput ( ) ) ) ; } }
Executes the specified command line input.

@param line Command line input.
Executes the specified command line input .