package Demo6;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;

public class ThreadFindFile {
	/*
	 * 查找文件夹中所有子文件夹的文件
	 */
	public void findAllFile(ArrayList<File> arrayList, File dir) {
		File[] files = dir.listFiles();
		if (files == null) {
			return;
		}
		for (File file : files) {
			if (file.isFile()) {
				arrayList.add(file);
			} else {
				findAllFile(arrayList, file);
			}
		}
	}

	/*
	 * 查找文件集合中后缀名为java的文件
	 * 查找到后，进入线程
	 */
	public void findJavaFile(ArrayList<File> arrayList) {
		for (File file : arrayList) {
			if (file.toString().lastIndexOf(".java") != -1) {
				FindFileString fileString = new FindFileString(file);
				new Thread(fileString).start();
			}
		}
	}

	public static void main(String[] args) {
		ThreadFindFile threadFindFile = new ThreadFindFile();
		ArrayList<File> arrayList = new ArrayList<>();
		threadFindFile.findAllFile(arrayList, new File("E:\\Code\\VSCode\\Test"));
		threadFindFile.findJavaFile(arrayList);
	}
}

class FindFileString implements Runnable {
	private File file;

	public FindFileString(File file) {
		this.file = file;
	}

	/*
	* 查找文件中是否有“Magic”字段
	* 如果有就输出文件的toString字符串
	* */
	@Override
	public void run() {
		byte[] bytes = new byte[(int) file.length()];
		try (FileInputStream fileInputStream = new FileInputStream(file);) {
			fileInputStream.read(bytes);
			String string = new String(bytes);
			if (string.contains("Magic")) {
				System.out.println(file);
			}
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
	}
}

public static void search(File floder,String search){
        File[] files = floder.listFiles();
        for (File f : files) {
            if (f.isFile()){
                if (f.getName().endsWith(".java")){
                    try (FileReader reader=new FileReader(f)){
                        char[] cs=new char[(int) f.length()];
                        reader.read(cs);
                        String dest=new String(cs);
                        if (dest.contains(search)){
                            System.out.println("找到目标字符串Dragon，在文件："+f.getAbsolutePath());
                        }
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            if (f.isDirectory()){
                search(f,search);
            }
        }
    }

public static void copyFloder(String srcFloder, String destFloder) {
        File srcf = new File(srcFloder);
        File[] files = srcf.listFiles();
        for (int i = 0; i < files.length; i++) {
            if (files[i].isFile()) {
                File dest=new File(destFloder, files[i].getName());
                dest.getParentFile().mkdirs();
                try (FileInputStream fis = new FileInputStream(files[i]);
                     FileOutputStream fos = new FileOutputStream(dest)) {
                    byte[] bs = new byte[(int) files[i].length()];
                    fis.read(bs);
                    fos.write(bs);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if(files[i].isDirectory()) {
                String dest = files[i].getAbsolutePath().replace(srcFloder, destFloder);
//                System.out.println(dest);
                copyFloder(files[i].getAbsolutePath(), dest);
            }
        }
    }

 public static void copyFile(String srcFile, String destFile) {
        File src = new File(srcFile);
        try (FileInputStream fis = new FileInputStream(src); FileOutputStream fos = new FileOutputStream(destFile)) {
            byte[] bs = new byte[(int) src.length()];
            fis.read(bs);
            fos.write(bs);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

public static void copyFile(String srcFile, String destFile)  {
        File f1=new File(srcFile);
        File f2=new File(destFile);
        try(FileInputStream fis=new FileInputStream(f1);
        FileOutputStream fos=new FileOutputStream(f2);){
            byte[] b=new byte[(int) f1.length()];
            fis.read(b);
            fos.write(b);
            fos.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void copyFolder(String srcFolder, String destFolder){
        File src=new File(srcFolder);
        File dest=new File(destFolder);
        if(!dest.exists()){
            dest.mkdirs();
        }
        if(!src.exists()){
            System.out.println("路径不存在！");

            return;
        }else{
            File [] f=src.listFiles();

            for(File ff:f){
                String lujing=dest.getAbsolutePath()+File.separator+ff.getName();
                if(ff.isDirectory()){
                    copyFolder(ff.getAbsolutePath(),lujing);
                }else{
                    copyFile(ff.getAbsolutePath(),lujing);
                }
            }
        }

    }
    public static void search(File folder, String search){
        if(!folder.exists()){
            System.out.println("bucunzai");
            return;
        }else{
        File[] f =folder.listFiles();
        for (File ff:f){
            if(ff.isDirectory()){
                search(ff.getAbsoluteFile(),search);
            }else{
                try(FileInputStream fs =new FileInputStream(ff);) {

                    byte[] b =new byte[(int) ff.length()];
                    fs.read(b);
                    String s=new String(b);
                    if(s.contains(search)) {
                        System.out.println(ff.getName()+"...."+ff.getAbsolutePath());
                    }
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
                }

        }
    }