package cn.idchecker.addrs;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import cn.idchecker.test.TimeUtil;

/**
 * 地址码读取类
 * @author rongxinhua
 *
 */
public class DicReader {
	
	/**
	 * 读取地址码
	 * @param addrNum
	 * @return 若存在，则返回该地址码对应的地址名称，若不存在，返回null
	 */
	public static String readAddress(String addrNum) {
		char first = addrNum.charAt(0);
		if(first == '1' || first == '2' || first == '3' || first == '4' || first == '5' || first == '6'){
			String filePath = first + ".dic";
			String addr =  readAddress(filePath, "UTF-8", addrNum);
			return addr;
		}
		return null;
	}
	
	/**
	 * 读取地址码是否存在
	 * @param filePath 文件路径
	 * @param charset 文件编码
	 * @param addrNum 地址码，6位数字
	 * @return 存在返回地址名称，否则返回null
	 */
	public static String readAddress(String filePath, String charset, String addrNum){
		String addr = null;
		try {
			InputStream is = DicReader.class.getResourceAsStream(filePath);
			BufferedReader buffReader = new BufferedReader(new InputStreamReader(is,charset));

			String line;
			while((line = buffReader.readLine()) != null){
				if(addrNum.equals(line.substring(0,6))) {
					addr = line.substring(7, line.length());
					break;
				}
			}
			buffReader.close();
			
		} catch (FileNotFoundException e) {
			System.err.println("找到不地址码文件");
			e.printStackTrace();
		} catch (IOException e) {
			System.err.println("读取地址码文件失败");
			e.printStackTrace();
		}
		return addr;
	}

}