package sourcecodegenproj;

import java.io.File;
import java.io.*;
/**
 *
 * <p>Title: </p>
 *
 * <p>Description: 將指定目錄中的多個java源代碼合成一個文件</p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author ximin
 * @version 1.0
 */
public class Main {
    public Main() {
        super();

    }
    public static void main(String[] args) {
        if (args.length != 2) {
            System.err.print("please input dir correctly");
            return;
        }
        File inputDir = new File(args[0]);//input dir
        File destFile = new File(args[1]);//dest file
        if (!destFile.exists())
            try {
                destFile.createNewFile();
            } catch (IOException ex) {
            }
        BufferedWriter bw = null;
        try {
            bw = new BufferedWriter(new FileWriter(destFile));
        } catch (IOException ex) {
        }
        mergeSourceCode(inputDir, bw);
    }

    public static void mergeSourceCode(File dir, BufferedWriter bw) {
        File[] files = dir.listFiles();
        BufferedReader br = null ;
        for (int i = 0; i < files.length; i++) {
            if (files[i].isDirectory()) {
                mergeSourceCode(files[i], bw);
            } else {
                try {
                    br = new BufferedReader(new FileReader(files[i]));
                } catch (FileNotFoundException ex) {
                }
                try {
                    if(!files[i].getName().endsWith(".java"))
                        continue;
                    bw.write("\r\n"+files[i].getName()+"\r\n");//寫文件名
                } catch (IOException ex1) {
                }
                String line;
                try {
                    while ((line = br.readLine()) != null) {
                            bw.write(line+"\r\n");
                    }
                } catch (IOException ex3) {
                }
            }
        }

    }
}