package com.sina.util.dnscache;
import android.annotation.SuppressLint;
import android.util.Log;
import com.sina.util.dnscache.model.IpModel;
import org.json.JSONException;
import org.json.JSONStringer;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.ListIterator;
import java.util.Map.Entry;
import java.util.Random;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
*
* 项目名称: DNSCache <br>
* 类名称: Tools <br>
* 类描述: 一些常用的小方法 <br>
* 创建人: fenglei <br>
* 创建时间: 2015-4-21 下午5:26:04 <br>
*
* 修改人: <br>
* 修改时间: <br>
* 修改备注: <br>
*
* @version V1.0
*/
public class Tools {
/**
* 从 url 中截取 domain
* @param url
* @return
*/
public static String getHostName(String url){
if (url == null)
return "";
url = url.trim();
String host = url.toLowerCase();
int end;
if (host.startsWith("http://")) {
end = url.indexOf("/", 8);
if (end > 7) {
host = url.substring(7, end);
} else {
host = url.substring(7);
}
} else if (host.startsWith("https://")) {
end = url.indexOf("/", 9);
if (end > 8) {
host = url.substring(8, end);
} else {
host = url.substring(8);
}
} else {
end = url.indexOf("/", 1);
if (end > 1) {
host = url.substring(0, url.indexOf("/", 1));
} else {
host = url;
}
}
return host;
}
/**
* 转换url 主机头为ip地址
* @param url 原url
* @param host 主机头
* @param ip 服务器ip
* @return
*/
public static String getIpUrl(String url, String host, String ip ){
if( url == null ){
Tools.log("TAG", "URL NULL") ;
}
if( host == null ){
Tools.log("TAG", "host NULL") ;
}
if( ip == null ){
Tools.log("TAG", "ip NULL") ;
}
if( url == null || host == null || ip == null ) return url ;
String ipUrl = url.replaceFirst(host, ip);
return ipUrl ;
}
// /**
// * 将ip转换成整形
// */
// public static long parseIpAddress(String ipAddress) {
// if (ipAddress == null || ipAddress.equals("0") || TextUtils.isEmpty(ipAddress)) {
// return 0;
// }
// ipAddress = ipAddress.trim();
// long[] ip = new long[4];
// // 先找到IP地址字符串中.的位置
// int position1 = ipAddress.indexOf(".");
// int position2 = ipAddress.indexOf(".", position1 + 1);
// int position3 = ipAddress.indexOf(".", position2 + 1);
// // 将每个.之间的字符串转换成整型
// try {
// ip[0] = Long.parseLong(ipAddress.substring(0, position1));
// ip[1] = Long.parseLong(ipAddress.substring(position1 + 1, position2));
// ip[2] = Long.parseLong(ipAddress.substring(position2 + 1, position3));
// ip[3] = Long.parseLong(ipAddress.substring(position3 + 1));
// } catch (NumberFormatException e) {
//
// }
// return (ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3];
// }
//
// /**
// * 将整形ip转成成字符串ip地址
// * @param longIp
// * @return
// */
// public static String longToIP(long longIp) {
// StringBuffer sb = new StringBuffer("");
// // 直接右移24位
// sb.append(String.valueOf((longIp >>> 24)));
// sb.append(".");
// // 将高8位置0，然后右移16位
// sb.append(String.valueOf((longIp & 0x00FFFFFF) >>> 16));
// sb.append(".");
// // 将高16位置0，然后右移8位
// sb.append(String.valueOf((longIp & 0x0000FFFF) >>> 8));
// sb.append(".");
// // 将高24位置0
// sb.append(String.valueOf((longIp & 0x000000FF)));
// return sb.toString();
// }
@SuppressLint("SimpleDateFormat")
public static String getStringDateShort(long time) {
Date currentTime = new Date(time);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = formatter.format(currentTime);
return dateString;
}
public static String getStringDateShort(String time) {
return getStringDateShort( Long.valueOf(time) );
}
public static void log( String tag, String msg ){
if( DNSCacheConfig.DEBUG == false ) return ;
Log.d(tag, msg) ;
}
/**
* 随机排序算法
* @param list
* @return
*/
public static void randomSort(ArrayList<IpModel> list) {
ArrayList<IpModel> temp = new ArrayList<IpModel>();
temp.addAll(list);
int count = temp.size();
IpModel[] array = new IpModel[count];
Random rand = new Random();
for (int i = 0; i < count; i++) {
int num = rand.nextInt(count - i);
array[i] = temp.remove(num);
}
int i = 0;
// 下面这种写法，是为了不引起list的并发异常
ListIterator<IpModel> it = list.listIterator();
while (it.hasNext()) {
it.next();
it.set(array[i++]);
}
}
public String generateJsonStrFromMap(HashMap<String, String> map) {
JSONStringer jsonStringer = new JSONStringer();
try {
jsonStringer = jsonStringer.object();
Set<Entry<String, String>> entrySet = map.entrySet();
for (Entry<String, String> entry : entrySet) {
jsonStringer = jsonStringer.key(entry.getKey()).value(entry.getValue());
}
jsonStringer = jsonStringer.endObject();
} catch (JSONException e) {
e.printStackTrace();
return "{}";
}
return jsonStringer.toString();
}
/**
* 判断该host是否是为 ipv4 格式。
* @param host 支持加端口验证
* @return
*/
public static boolean isIPV4(String host) {
long begin = System.currentTimeMillis();
host = host.trim();
if (host.contains(":")) {
String[] array = host.split(":");
if (null != array && array.length == 2) {
host = array[0];
host = host.trim();
}
} else {
if (null == host || host.length() < 7 || host.length() > 15 || "".equals(host)) {
return false;
}
}
String rexp = "^(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|[1-9])\\." //
+ "(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\." //
+ "(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\."//
+ "(00?\\d|1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)$";
Pattern pat = Pattern.compile(rexp);
Matcher mat = pat.matcher(host);
boolean ipAddress = mat.find();
long end = System.currentTimeMillis();
Tools.log("Tools:", "regular time spend : " + (end - begin) + "ms");
return ipAddress;
}
}