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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.model.tosca;
import org.openecomp.sdc.be.model.tosca.version.ApplicationVersionException;
import org.openecomp.sdc.be.model.tosca.version.Version;
import java.util.regex.Pattern;
public final class VersionUtil {
/** Utility class should not have public constructor. */
private VersionUtil() {
}
/**
* The version must begin with a bloc of numbers, and then it can have one
* or more bloc of numbers separated by '.' and then it can have alpha
* numeric bloc separated by '.' or '-'
*/
public static final Pattern VERSION_PATTERN = Pattern.compile("\\d+(?:\\.\\d+)*(?:[\\.-]\\p{Alnum}+)*");
private static final String SNAPSHOT_IDENTIFIER = "SNAPSHOT";
/**
* Check if a version is a SNAPSHOT (development) version.
*
* @param version
* The actual version string.
* @return True if the version is a SNAPSHOT version, false if not (RELEASE
* version).
*/
public static boolean isSnapshot(String version) {
return version.toUpperCase().contains(SNAPSHOT_IDENTIFIER);
}
/**
* Check if a version is valid
*
* @param version
* version string to parse
* @return true if it's following the defined version pattern
*/
public static boolean isValid(String version) {
return VERSION_PATTERN.matcher(version).matches();
}
/**
* Parse the version's text to produce a comparable version object
*
* @param version
* version text to parse
* @return a comparable version object
* @throws ApplicationVersionException
* if the version text is not following the defined version
* pattern
*/
public static Version parseVersion(String version) {
if (!isValid(version)) {
throw new ApplicationVersionException(
"This version is not valid [" + version + "] as it does not match [" + VERSION_PATTERN + "]");
} else {
return new Version(version);
}
}
/**
* Compare 2 versions
*
* @param versionLeft
* @param versionRight
* @return
*/
public static int compare(String versionLeft, String versionRight) {
return parseVersion(versionLeft).compareTo(parseVersion(versionRight));
}
}
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