package cn.angs;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;

/**
 * ClassName: RBufferedReader.java
 * Description:
 *
 * @author wangshun@cloudwalk.cn
 * @version 1.0.0
 * @date 2021/07/22 14:24
 */
public class RBufferedReader extends BufferedReader {

    private ArrayList lines = new ArrayList();


    public RBufferedReader(Reader in) {
        super(in);
    }


    @Override
    public String readLine() throws IOException {
        if (lines.size() > 0) {
            return (String) lines.remove(0);
        } else {
            return super.readLine();
        }
    }


    public void reinsertLine(String line) {
        lines.add(0, line);
    }
}