package com.cwt.study.java中级.s_20240722;

import java.io.*;

public class TestFile {
    //假设你的项目目录是 D:\java-study，遍历这个目录下所有的java文件（包括子文件夹），找出文件内容包括 Magic的那些文件，并打印出来。

    /**
     * 搜索文件内容
     * @param dir 需要搜索的目录
     * @param suffixName 需要搜索的文件后缀名
     * @param searchContent 搜索内容
     */
    public static void searchFile(String dir,String suffixName,String searchContent){
        //查找.java结尾文件
        File dirFile = new File(dir);
        File[] files = dirFile.listFiles();
        for (File s : files){
            if (s.isFile()) {
                //判断文件
                if(s.getName().endsWith(suffixName)){
                    try {
                        FileReader fileReader = new FileReader(s);
                        BufferedReader bufferedReader = new BufferedReader(fileReader);
                        while (true){
                            String line = bufferedReader.readLine();
                            if(line == null){
                                break;
                            }
                            if (line.contains(searchContent)) {
                                System.out.println("搜索内容： "+line+"，找到文件位置： "+s.getAbsolutePath());
                            }
                        }
                    } catch (FileNotFoundException e) {
                        throw new RuntimeException(e);
                    } catch (IOException e) {
                        throw new RuntimeException(e);
                    }
                }
            } else {
                //判断文件夹
                searchFile(s.getAbsolutePath(),suffixName,searchContent);

            }
        }


    }
    public static void main(String[] args) {
        searchFile("D:\\java-study",".txt","magic");

    }
}

public static void main(String[] args) {
		//待寻找的源文件夹
		String srcFolderPath = "E:/wgxFolder/copysrc";
		//开始寻找并打印结果
		System.out.println(String.format("包含%s内容的文件有：", "magic"));
		int count = FindInfoFromFile("magic", srcFolderPath,new int[1]);
		System.out.println(String.format("共%d个文件。", count));
	}
	/*寻找指定路径下的所有文件（包含子文件夹）中存在指定信息（info）的文件
	 * */
	public static int FindInfoFromFile(String info,String folderPath,int[]count)
	{
		
		File folder = new File(folderPath);
		if(!folder.exists())				//防止路径不存在
		return 0;
		File[]fs = folder.listFiles();
		if(fs==null)return 0;
		if(fs.length<1) return 0;
		for (File f : fs) {
			String[] copy = f.getName().split("\\.");
			String name = f.getName();
			String filter = "";
			if (copy.length >= 2) {
				filter = copy[copy.length - 1];
			}
			if(filter.equals("java"))
			try(BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(f),StandardCharsets.UTF_8))) {
				String line = "";
				while((line = reader.readLine())!=null)
				{
					if(line.toLowerCase().contains(info.toLowerCase())){
						count[0]++;
						System.out.println(f.getName());
						System.out.println("所在行的内容为"+line);
						break;
					}
				}
			} catch (Exception e) {
				e.printStackTrace();
				// TODO: handle exception
			}
			FindInfoFromFile(info,f.getAbsolutePath(),count);
		}
		return count[0];
	}

public static void main(String[] args) {
		//String srcFilePath = "E:/wgxFolder/newLOL.txt";
		//String destFilePath = "E:/wgxFolder/newLOL-copy.txt";
		//copyFile(srcFilePath, destFilePath);	//copy file function
		String srcFolderPath = "E:/wgxFolder";
		copyFolder(srcFolderPath);
	}
	
	/*将指定文件夹中的所有文件和所有子文件夹和子文件复制一个副本
	 * */
	public static void copyFolder(String folderPath)
	{
		File folder = new File(folderPath);
		if(!folder.exists())				//防止路径不存在
		return;
		File[]fs = folder.listFiles();
		if(fs==null)return;
		if(fs.length<1)return;
		for (File f : folder.listFiles()) {
			String[]info = f.getName().split("\\.");
			String name = f.getName();
			String filter = "";
			if(info.length>=2)
			{
				name = "";
				for (int i = 0; i < info.length-1; i++) {
					name+=info[i];
				}
				filter = info[info.length-1];
			}
			copyFile(f.getAbsolutePath(), String.format("%s/%s-copy.%s", folder.getAbsolutePath(),
					name,filter));
			copyFolder(f.getAbsolutePath());//递归copy子文件夹及子文件
		}

	}
	
	/*SrcFile copy/create to destFilePath
	 * */
	public static void copyFile(String srcFilePath,String destFilePath)
	{
		File src = new File(srcFilePath);
		if(!src.exists())return;//防止目标文件的路径不存在
		File dest = new File(destFilePath);
		dest.getParentFile().mkdirs();//防止目标文件的路径不存在
		try(InputStreamReader in = new InputStreamReader(new FileInputStream(src),StandardCharsets.UTF_8);
				BufferedReader reader = new BufferedReader(in);
				PrintWriter writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(dest),StandardCharsets.UTF_8))) {
			String str = "";
			while ((str=reader.readLine())!=null) {
					writer.write(String.format("%s%n", str));
			}
			System.out.println(String.format("success!%s copy to %s ", src.getName(),dest.getName()));
		} catch (Exception e) {
			// TODO: handle exception
		}
	}

package pre.how2j.Stream;

import java.io.*;
import java.nio.file.Files;
import java.util.Arrays;
import java.util.Objects;

public class PreFIle {
    public static void copyFile(String srcFile, String destFile){
        File FileSrc = new File(srcFile);
        File FileDest = new File(destFile);
        FileDest.getParentFile().mkdir();
        try(
                FileReader fr = new FileReader(FileSrc);
                BufferedReader br = new BufferedReader(fr);
                FileWriter fw = new FileWriter(FileDest);
                PrintWriter pw = new PrintWriter(fw);
                ){
            while (true){
                String line = br.readLine();
                if (null == line) break;
                pw.println(line);
            }
            System.out.println(FileSrc + "文件已复制完成");
        }catch (IOException e){
            e.printStackTrace();
        }
    }
    public static void copyFolder(String srcFolder, String destFolder){
        File FolderSrc = new File(srcFolder);
        File tmpFolder = new File(destFolder);
        for (String f: Objects.requireNonNull(FolderSrc.list())){
//            System.out.println(f);
            File tmp_f = new File(FolderSrc+"\\"+f);
//            System.out.println(tmp_f);
            if (tmp_f.isFile()){
                copyFile(String.valueOf(tmp_f),destFolder + "\\" + f);
            }
            else {
                copyFolder(String.valueOf(tmp_f),destFolder + "\\" + f);
            }
        }
    }
    public static void search(File folder, String search){
        for (String f: Objects.requireNonNull(folder.list())){
            File tmp_f = new File(folder +"\\"+f);
            if (tmp_f.isFile()){
                try(
                        FileReader fw = new FileReader(tmp_f);
                        BufferedReader br = new BufferedReader(fw);
                ){
                    while (true){
                        String line = br.readLine();
                        if (null == line) break;
                        if (line.contains(search)){
                            System.out.println("已找到" + search + "，在"+tmp_f);
                            break;
                        }
                    }
                }
                catch(IOException e){
                    e.printStackTrace();
                }
            }
            else{
                search(tmp_f,search);
            }
        }
    }
    public static void main(String[] args){
        String srcFIle = "./xy/lol.txt";
        String destFile = "./xy/lol_dest.txt";
        String srcFolder = "./xy/";
        String destFolder = "./xy_dest/";       //这里路径刚开始报错，现在不知道该哪里莫名其妙好了
//        copyFile(srcFIle,destFile);
//        copyFolder(srcFolder,destFolder);
        File f = new File(srcFolder);
        search(f,"a");
    }
}

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);
		}
	}
}