commandcompile.java

议程管理系统

package agenda.CommandInput;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

import agenda.Function.Add;
import agenda.Function.Clear;
import agenda.Function.Delete;
import agenda.Function.Query;
import agenda.Function.Quit;
import agenda.Function.Register;

/**
 * CommandShell 类为本系统的交互类，所有的交互操作都集中放在此类的start方法中。
 * 读取输入,解析命令,执行命令对应的功能类，供主类直接调用
 * 
 */
public class CommandCompile {
	//
    private static final String PREFIX = "\n $ ";
    private static final String REGISTER= "register";
    private static final String ADD = "add";
    private static final String QUERY = "query";
    private static final String DELETE = "delete";
    private static final String CLEAR = "clear";
    private static final String BATCH = "batch";
    private static final String QUIT = "quit";

    //登记命令在解析中的用户名,密码
    public static String username = null;
    public static String password = null;
    //用于存储命令参数的容器
    public static List registerargslist = new ArrayList();
    public static List addargslist = new ArrayList();
    public static List queryargslist = new ArrayList();
    public static List deleteargslist = new ArrayList();
    public static List clearargslist = new ArrayList();
    public static List batchargslist = new ArrayList();
    private PrintWriter pw = null;

    
    
    public CommandCompile(){                      //构造函数初始化
    	pw = new PrintWriter(System.out);
    }
    

    public void start() throws IOException{              //解析系统输入的所有命令。
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	StringTokenizer st = null;
    	// 读取输入,解析命令,执行
    	for(;;){
    		pw.print(PREFIX);
    		pw.flush();
    		String input = br.readLine();
    		st = new StringTokenizer(input);
    		String cmd = st.nextToken();
    		if(cmd.equalsIgnoreCase(REGISTER)){  // 解析register命令
    			// get username
    		
    			while(st.hasMoreTokens()){
    				registerargslist.add(st.nextToken());
    			}
    			Register register = new Register();
        		register.doRegister(CommandCompile.registerargslist);
        		registerargslist.clear();
        
    		}else if(cmd.equalsIgnoreCase(ADD)){  // 解析add命令

    			while(st.hasMoreTokens()){
    				addargslist.add(st.nextToken());
    			}
    			Add add = new Add();
        		Add.doAddAgenda(CommandCompile.addargslist);
        		addargslist.clear();
        		
    		}else if(cmd.equalsIgnoreCase(QUERY)){  // 解析QUERY命令
    		
    			while(st.hasMoreTokens()){
    				queryargslist.add(st.nextToken());
    			}


    			
    			Query query = new Query();
    			query.doQuery(queryargslist);
    			queryargslist.clear();
    			
    		}else if(cmd.equalsIgnoreCase(DELETE)){  // 解析DETELE命令
    			// DELETE

    			while(st.hasMoreTokens()){
    				deleteargslist.add(st.nextToken());
    			}
    			Delete delete = new Delete();
    			Delete.doDelete(deleteargslist);
    			deleteargslist.clear();
    			
    		}else if(cmd.equalsIgnoreCase(CLEAR)){  // 解析CLEAR命令
    			// CLEAR
    		
    			while(st.hasMoreTokens()){
    				clearargslist.add(st.nextToken());
    			}
    			Clear delete = new Clear();
    			Clear.doClear(clearargslist);
    			clearargslist.clear();

    			
    		}else if(cmd.equalsIgnoreCase(BATCH)){  // 解析BATCH命令
    			// BATCH
    			BufferedReader in  =  new BufferedReader(new FileReader("command.txt"));

    			for(int i = 0;i < 18;i++){
    				String inputbatch = in.readLine();
    				if(inputbatch == null){
    					break;
    				}
    				int j = i+1;
    				System.out.println("	Command["+j+"]:  "+inputbatch);
    				st = new StringTokenizer(inputbatch);
    				String cmdbatch = st.nextToken();
    				//System.out.println("\n");
    				if(cmdbatch.equalsIgnoreCase(REGISTER)){  // 解析register命令
    	    			//get username

    	    			while(st.hasMoreTokens()){
    	    				registerargslist.add(st.nextToken());
    	    			}
    	    			Register register = new Register();
    	        		register.doRegister(CommandCompile.registerargslist);

    	        		registerargslist.clear();
    	        		System.out.println("\n");
    	        
    	    		}else if(cmdbatch.equalsIgnoreCase(ADD)){  // 解析add命令
    	    		
    	    			while(st.hasMoreTokens()){
    	    				addargslist.add(st.nextToken());
    	    			}
    	    			Add add = new Add();
    	        		Add.doAddAgenda(CommandCompile.addargslist);
    	        		addargslist.clear();
    	        		System.out.println("\n");
    	        		
    	        		
    	    		}else if(cmdbatch.equalsIgnoreCase(QUERY)){  // 解析QUERY命令
    	   
    	    			while(st.hasMoreTokens()){
    	    				queryargslist.add(st.nextToken());
    	    			}
    	    			Query query = new Query();
    	    			query.doQuery(queryargslist);
    	    			queryargslist.clear();
    	    			System.out.println("\n");
    	    			
    	    			
    	    		}else if(cmdbatch.equalsIgnoreCase(DELETE)){  // 解析DETELE命令
    	    			// DETELE
    	    	
    	    			while(st.hasMoreTokens()){
    	    				deleteargslist.add(st.nextToken());
    	    			}
    	    			Delete delete = new Delete();
    	    			Delete.doDelete(deleteargslist);
    	    			deleteargslist.clear();
    	    			System.out.println("\n");
    	    			
    	    		}else if(cmdbatch.equalsIgnoreCase(CLEAR)){  // 解析CLEAR命令
    	    			// CLEAR
    	    		
    	    			while(st.hasMoreTokens()){
    	    				clearargslist.add(st.nextToken());
    	    			}
    	    			Clear delete = new Clear();
    	    			Clear.doClear(clearargslist);
    	    			clearargslist.clear();
    	    			System.out.println("\n");
    	    			
    	    		}else if(cmdbatch.equalsIgnoreCase(QUIT)){  // 解析QUIT命令

    	    			Quit quitout = new Quit();
    	    			Quit.doQuit();

    	    		}
    			}
    			in.close();
    			//--------------------------------------------------------------
    			
    		}else if(cmd.equalsIgnoreCase(QUIT)){  // 解析QUIT命令

    			Quit quitout = new Quit();
    			Quit.doQuit();


    		}else 
{
    			//当参数不对时提示命令输入格式
    			System.out.println("	警告-- ：");
    			System.out.println("	输入了不存在的命令或者命令格式有误，使用help命令查看系统各命令格式.");
    		}
    	}
    }


    public void quitstream() {
    	pw.println("	已安全退出系统！感谢使用！");
     	pw.close();

    }



}