/src_service/com/ptswitch/material/admcmd/cmds/HelpAdmCmd.java

package com.ptswitch.material.admcmd.cmds;



import io.netty.channel.ChannelHandlerContext;



import java.util.Map;



import com.ptswitch.material.admcmd.AbstractAdmCmdImpl;

import com.ptswitch.material.admcmd.AdmCmd;

import com.ptswitch.material.util.Gs;



public class HelpAdmCmd extends AbstractAdmCmdImpl implements AdmCmd {



    public HelpAdmCmd() {

        super("help");

    }



    @Override

    public void execute(String cmdLine, ChannelHandlerContext ctx) {

        String cmdName = cmdLine.trim();

        Map<String, AdmCmd> cmds = Gs.getAdmCmdHandler().getCmds();

        if (cmdName.isEmpty()) {

            StringBuilder sb = new StringBuilder();

            int i = 0;

            for (String cmd : cmds.keySet()) {

                sb.append(cmd).append("  ");

                i++;

                if (i % 4 == 0) {

                    sb.append("\r\n");

                }

            }

            sb.append("\r\n");

            ctx.writeAndFlush(sb.toString());

        } else {

            AdmCmd admCmd = cmds.get(cmdName);

            if (admCmd == null) {

                ctx.writeAndFlush("can't find cmd\r\n");

                return;

            }

            ctx.writeAndFlush(admCmd.usage() + "\r\n");

        }

    }



}