package FileCopy;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.LinkedList;

import java.util.Queue;

public class CopyFileV2 {

    public static void main(String agrs[]){

        String srcFileName = "F:" + File.separator + "ppt";

        String destFilePath = "D:" + File.separator + "copyFileExam";

//        copy(srcFileName, destFilePath);

        rNoCopy(srcFileName, destFilePath);

        System.out.println("拷贝完成!!!");

    }

    private static void rNoCopy(String fileName, String destFileName){

        Queue<String[]> fPQ = new LinkedList<String[]>();

        String[] s = new String[2];

        s[0] = fileName;

        s[1] = destFileName;

        fPQ.offer(s);

        int i = 0;

        while(!fPQ.isEmpty()){

            for(String[] st : fPQ){

                for(String str : st)

                System.out.println(str);

            }

            System.out.println("\n" + i++);

            String[] filePath = fPQ.poll();

            File file = new File(filePath[0]);

            File destFile = new File(filePath[1]);

            if(!destFile.exists()){

                destFile.mkdirs();

                System.out.println("创建多级列表成功！！！");

            }

            File files[] = file.listFiles();

            for(File f: files){

                if(f.isFile()){

                    fileCopy(f.getPath(), filePath[1] + File.separator + f.getName());

                }

                else if(f.isDirectory()){

                    String[] temps = new String[2]; 

                    temps[0] = f.getPath();

                    temps[1] = filePath[1] + File.separator + f.getName();

                    fPQ.offer(temps);

                }

            }

        }

    }

    private static void copy(String fileName, String destFileName){

        File file = new File(fileName);

        File destFile = new File(destFileName);

        File files[] = file.listFiles();

        if(!destFile.exists()){

            destFile.mkdirs();

        }

        for(File f: files){

            if(f.isFile()){

                fileCopy(f.getPath(), destFileName + File.separator + f.getName());

            }

            else if(f.isDirectory()){

                copy(f.getPath(), destFileName + File.separator + f.getName());

            }

        }

    }

    private static void fileCopy(String fileName, String destFileName){

        System.out.println("正在拷贝文件！！！");

        File file = new File(fileName);

        File destFile = new File(destFileName);

//        InputStream is = null;

//        OutputStream os = null;

        BufferedInputStream bis = null;

        BufferedOutputStream bos = null;

        try {

            bis = new BufferedInputStream(new FileInputStream(file));

            bos = new BufferedOutputStream(new FileOutputStream(destFile));

            byte bytes[] = new byte[1024];

            while( bis.read(bytes) != -1 ){

                bos.write(bytes);

                bos.flush();

            }

        } catch (FileNotFoundException e1) {

            e1.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            try {

//                os.flush();

//                is.close();

//                os.close();

                bos.flush();

                bis.close();

                bos.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

//        private static void getAllFileList(String fileName){

//            File file = new File(fileName);

//            File files[] = file.listFiles();

//

//            for(File f: files){

//                if(f.isFile()){

//

//                }

//                if(f.isDirectory()){

//                    getAllFileList(f.toString());

//                }

//                else {

//                    System.out.println(f.getName());

//                }

//            }

//

//    }

    }

}