/*
|
* Copyright (c) 2018-2028, DreamLu All rights reserved.
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions are met:
|
*
|
* Redistributions of source code must retain the above copyright notice,
|
* this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* Neither the name of the dreamlu.net developer nor the names of its
|
* contributors may be used to endorse or promote products derived from
|
* this software without specific prior written permission.
|
* Author: DreamLu 卢春梦 (596392912@qq.com)
|
*/
|
|
package org.springblade.core.tool.utils;
|
|
import org.springframework.lang.Nullable;
|
|
/**
|
* 版本号比较工具
|
* <p>
|
* 思路来源于： https://github.com/hotoo/versioning/blob/master/versioning.js
|
* <p>
|
* example
|
* * ##完整模式
|
* Version.of("v0.1.1").eq("v0.1.2"); // false
|
* <p>
|
* ##不完整模式
|
* Version.of("v0.1").incomplete().eq("v0.1.2"); // true
|
*
|
* @author L.cm
|
* email: 596392912@qq.com
|
* site:http://www.dreamlu.net
|
* date 2015年7月9日下午10:48:39
|
*/
|
public class Version {
|
private static final String DELIMITER = "\\.";
|
|
/**
|
* 版本号
|
*/
|
@Nullable
|
private String version;
|
/**
|
* 是否完整模式，默认使用完整模式
|
*/
|
private boolean complete = true;
|
|
/**
|
* 私有实例化构造方法
|
*/
|
private Version() {
|
}
|
|
private Version(@Nullable String version) {
|
this.version = version;
|
}
|
|
/**
|
* 不完整模式
|
*
|
* @return {Version}
|
*/
|
public Version incomplete() {
|
this.complete = false;
|
return this;
|
}
|
|
/**
|
* 构造器
|
*
|
* @param version 版本
|
* @return {Version}
|
*/
|
public static Version of(@Nullable String version) {
|
return new Version(version);
|
}
|
|
/**
|
* 比较版本号是否相同
|
* <p>
|
* example:
|
* * Version.of("v0.3").eq("v0.4")
|
*
|
* @param version 字符串版本号
|
* @return {boolean}
|
*/
|
public boolean eq(@Nullable String version) {
|
return compare(version) == 0;
|
}
|
|
/**
|
* 不相同
|
* <p>
|
* example:
|
* * Version.of("v0.3").ne("v0.4")
|
*
|
* @param version 字符串版本号
|
* @return {boolean}
|
*/
|
public boolean ne(@Nullable String version) {
|
return compare(version) != 0;
|
}
|
|
/**
|
* 大于
|
*
|
* @param version 版本号
|
* @return 是否大于
|
*/
|
public boolean gt(@Nullable String version) {
|
return compare(version) > 0;
|
}
|
|
/**
|
* 大于和等于
|
*
|
* @param version 版本号
|
* @return 是否大于和等于
|
*/
|
public boolean gte(@Nullable String version) {
|
return compare(version) >= 0;
|
}
|
|
/**
|
* 小于
|
*
|
* @param version 版本号
|
* @return 是否小于
|
*/
|
public boolean lt(@Nullable String version) {
|
return compare(version) < 0;
|
}
|
|
/**
|
* 小于和等于
|
*
|
* @param version 版本号
|
* @return 是否小于和等于
|
*/
|
public boolean lte(@Nullable String version) {
|
return compare(version) <= 0;
|
}
|
|
/**
|
* 和另外一个版本号比较
|
*
|
* @param version 版本号
|
* @return {int}
|
*/
|
private int compare(@Nullable String version) {
|
return Version.compare(this.version, version, complete);
|
}
|
|
/**
|
* 比较2个版本号
|
*
|
* @param v1 v1
|
* @param v2 v2
|
* @param complete 是否完整的比较两个版本
|
* @return (v1 < v2) ? -1 : ((v1 == v2) ? 0 : 1)
|
*/
|
private static int compare(@Nullable String v1, @Nullable String v2, boolean complete) {
|
// v1 null视为最小版本，排在前
|
if (v1 == v2) {
|
return 0;
|
} else if (v1 == null) {
|
return -1;
|
} else if (v2 == null) {
|
return 1;
|
}
|
// 去除空格
|
v1 = v1.trim();
|
v2 = v2.trim();
|
if (v1.equals(v2)) {
|
return 0;
|
}
|
String[] v1s = v1.split(DELIMITER);
|
String[] v2s = v2.split(DELIMITER);
|
int v1sLen = v1s.length;
|
int v2sLen = v2s.length;
|
int len = complete
|
? Math.max(v1sLen, v2sLen)
|
: Math.min(v1sLen, v2sLen);
|
|
for (int i = 0; i < len; i++) {
|
String c1 = len > v1sLen || null == v1s[i] ? "" : v1s[i];
|
String c2 = len > v2sLen || null == v2s[i] ? "" : v2s[i];
|
|
int result = c1.compareTo(c2);
|
if (result != 0) {
|
return result;
|
}
|
}
|
|
return 0;
|
}
|
|
}
|
