001// *************************************************************************************************************************** 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * 005// * with the License. You may obtain a copy of the License at * 006// * * 007// * http://www.apache.org/licenses/LICENSE-2.0 * 008// * * 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * 011// * specific language governing permissions and limitations under the License. * 012// *************************************************************************************************************************** 013package org.apache.juneau.internal; 014 015import static org.apache.juneau.internal.StringUtils.*; 016 017/** 018 * Represents an OSGi-style version range like <js>"1.2"</js> or <js>"[1.0,2.0)"</js>. 019 * 020 * <p> 021 * The range can be any of the following formats: 022 * <ul> 023 * <li><js>"[0,1.0)"</js> = Less than 1.0. 1.0 and 1.0.0 does not match. 024 * <li><js>"[0,1.0]"</js> = Less than or equal to 1.0. Note that 1.0.1 will match. 025 * <li><js>"1.0"</js> = At least 1.0. 1.0 and 2.0 will match. 026 * </ul> 027 */ 028public class VersionRange { 029 030 private final Version minVersion, maxVersion; 031 private final boolean minExclusive, maxExclusive; 032 033 /** 034 * Constructor. 035 * 036 * @param range The range string to parse. 037 */ 038 public VersionRange(String range) { 039 range = range.trim(); 040 if (! range.isEmpty()) { 041 char c1 = range.charAt(0), c2 = range.charAt(range.length()-1); 042 int c = range.indexOf(','); 043 if (c > -1 && (c1 == '[' || c1 == '(') && (c2 == ']' || c2 == ')')) { 044 String v1 = range.substring(1, c), v2 = range.substring(c+1, range.length()-1); 045 minVersion = new Version(v1); 046 maxVersion = new Version(v2); 047 minExclusive = c1 == '('; 048 maxExclusive = c2 == ')'; 049 } else { 050 minVersion = new Version(range); 051 maxVersion = null; 052 minExclusive = maxExclusive = false; 053 } 054 } else { 055 minVersion = maxVersion = null; 056 minExclusive = maxExclusive = false; 057 } 058 } 059 060 /** 061 * Returns <jk>true</jk> if the specified version string matches this version range. 062 * 063 * @param v The version string (e.g. <js>"1.2.3"</js>) 064 * @return <jk>true</jk> if the specified version string matches this version range. 065 */ 066 public boolean matches(String v) { 067 if (isEmpty(v)) 068 return (minVersion == null && maxVersion == null); 069 Version ver = new Version(v); 070 if (minVersion != null && ! ver.isAtLeast(minVersion, minExclusive)) 071 return false; 072 if (maxVersion != null && ! ver.isAtMost(maxVersion, maxExclusive)) 073 return false; 074 return true; 075 } 076 077 @Override /* Object */ 078 public String toString() { 079 return (minExclusive ? "(" : "[") + minVersion + ',' + maxVersion + (maxExclusive ? ")" : "]"); 080 } 081}