com.github.lxyscls.jvmjava.Cmd.java Source code

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Here is the source code for com.github.lxyscls.jvmjava.Cmd.java

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/*
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package com.github.lxyscls.jvmjava;

import java.util.Arrays;
import org.apache.commons.cli.*;

/**
 *
 * @author sk-xinyilong
 */
class Cmd {
    boolean helpFlag;
    boolean versionFlag;
    String cpOption;
    String runClass;
    String[] runClassArgs;
    String XjreOption;

    private Cmd() {
    }

    static void printUsage() {
        System.out.println("Usage: Main [-options] class [args...]");
    }

    static Cmd parseCmd(String[] args) throws ParseException {
        Cmd cmd = new Cmd();

        Options options = new Options();
        options.addOption("help", false, "print help message");
        options.addOption("?", false, "print help message");
        options.addOption("version", false, "print version and exit");
        options.addOption("classpath", true, "classpath");
        options.addOption("cp", true, "classpath");
        options.addOption("Xjre", true, "path to jre");

        CommandLineParser parser = new DefaultParser();

        CommandLine cl = parser.parse(options, args);
        cmd.helpFlag = cl.hasOption("help") || cl.hasOption("?");
        cmd.versionFlag = cl.hasOption("version");

        if (cl.hasOption("classpath")) {
            cmd.cpOption = cl.getOptionValue("classpath");
        } else if (cl.hasOption("cp")) {
            cmd.cpOption = cl.getOptionValue("cp");
        }
        if (cl.hasOption("Xjre")) {
            cmd.XjreOption = cl.getOptionValue("Xjre");
        }

        String[] leftOverArgs = cl.getArgs();
        if (leftOverArgs.length > 0) {
            cmd.runClass = leftOverArgs[0];
            cmd.runClassArgs = Arrays.copyOfRange(leftOverArgs, 1, leftOverArgs.length);
        }

        return cmd;
    }
}