| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.servicecomb.foundation.common; |
| |
| import java.util.Objects; |
| |
| import org.apache.commons.lang3.ArrayUtils; |
| |
| // short version is enough |
| public class Version implements Comparable<Version> { |
| private static final String[] ZERO = new String[] {"0", "0", "0", "0"}; |
| |
| private final short major; |
| |
| private final short minor; |
| |
| private final short patch; |
| |
| private final short build; |
| |
| private final String version; |
| |
| private final long numberVersion; |
| |
| // 1 |
| // 1.0 |
| // 1.0.0 |
| // 1.0.0.0 |
| public Version(String version) { |
| Objects.requireNonNull(version); |
| |
| String[] versions = version.split("\\.", -1); |
| if (versions.length > 4) { |
| throw new IllegalStateException(String.format("Invalid version \"%s\".", version)); |
| } |
| |
| if (versions.length < 4) { |
| versions = ArrayUtils.addAll(versions, ZERO); |
| } |
| this.major = parseNumber("major", version, versions[0]); |
| this.minor = parseNumber("minor", version, versions[1]); |
| this.patch = parseNumber("patch", version, versions[2]); |
| this.build = parseNumber("build", version, versions[3]); |
| |
| this.version = combineStringVersion(); |
| this.numberVersion = combineVersion(); |
| } |
| |
| private short parseNumber(String name, String allVersion, String version) { |
| short value = 0; |
| try { |
| value = Short.parseShort(version); |
| } catch (NumberFormatException e) { |
| throw new IllegalStateException( |
| String.format("Invalid %s \"%s\", version \"%s\".", name, version, allVersion), e); |
| } |
| |
| if (value < 0) { |
| throw new IllegalStateException( |
| String.format("%s \"%s\" can not be negative, version \"%s\".", name, version, allVersion)); |
| } |
| |
| return value; |
| } |
| |
| public Version(short major, short minor, short patch, short build) { |
| this.major = major; |
| this.minor = minor; |
| this.patch = patch; |
| this.build = build; |
| this.version = combineStringVersion(); |
| this.numberVersion = combineVersion(); |
| } |
| |
| private String combineStringVersion() { |
| return major + "." + minor + "." + patch + "." + build; |
| } |
| |
| // 1.0.0 equals 1.0.0.0 |
| private long combineVersion() { |
| return (long) major << 48 | (long) minor << 32 | (long) patch << 16 | (long) build; |
| } |
| |
| public short getMajor() { |
| return major; |
| } |
| |
| public short getMinor() { |
| return minor; |
| } |
| |
| public short getPatch() { |
| return patch; |
| } |
| |
| public short getBuild() { |
| return build; |
| } |
| |
| public String getVersion() { |
| return version; |
| } |
| |
| @Override |
| public String toString() { |
| return version; |
| } |
| |
| @Override |
| public int hashCode() { |
| return version.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other == this) { |
| return true; |
| } |
| |
| if (!(other instanceof Version)) { |
| return false; |
| } |
| |
| return numberVersion == ((Version) other).numberVersion; |
| } |
| |
| @Override |
| public int compareTo(Version other) { |
| return Long.compare(numberVersion, other.numberVersion); |
| } |
| } |