package com.rc114.scanner;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.net.URLDecoder;

public class FileHelper {
    public static String combinePath(String path1, String path2) {
        File file1 = new File(path1);
        File file2 = new File(file1, path2);
        return file2.getPath();
    }

    /**
     * 读取文件
     *
     * @param filepath 文件路径
     */
    public static String readFile(String filepath) {
        String encoding = "UTF-8";
        return readFile(filepath, encoding);
    }

    /**
     * 读取文件，指定编码
     *
     * @param filepath 文件路径
     */
    public static String readFile(String filepath, String encoding) {
        try {
            filepath = URLDecoder.decode(filepath, "utf-8");
            File file = new File(filepath);
            Long filelength = file.length();
            byte[] filecontent = new byte[filelength.intValue()];
            FileInputStream in = new FileInputStream(file);
            in.read(filecontent);
            in.close();
            return new String(filecontent, encoding);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 将字符串写入文件
     *
     * @param filepath
     * @param text
     * @param isAppend
     */
    public static void writeFile(String filepath, String text, boolean isAppend) {

        try {
            filepath = URLDecoder.decode(filepath, "utf-8");
            File file = new File(filepath);
            File parentFile = file.getParentFile();
            if (!parentFile.exists()) {
                parentFile.mkdirs();
            }
            if (!file.exists()) {
                file.createNewFile();
            }

            FileOutputStream f = new FileOutputStream(filepath, isAppend);
            f.write(text.getBytes());
            f.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void writeFile(String filepath, String text, String encodeing) {

        try {
            filepath = URLDecoder.decode(filepath, "utf-8");
            File file = new File(filepath);
            File parentFile = file.getParentFile();
            if (!parentFile.exists()) {
                parentFile.mkdirs();
            }
            if (!file.exists()) {
                file.createNewFile();
            }
            OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(filepath), encodeing);
            writer.append(text);
            writer.close();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}