ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.ws.util;
ohair@286: 
ohair@286: import java.util.StringTokenizer;
ohair@286: 
ohair@286: 
ohair@286: /**
ohair@286:  * Provides some version utilities.
ohair@286:  *
ohair@286:  * @author JAX-WS Development Team
ohair@286:  */
ohair@286: 
ohair@286: public final class VersionUtil {
ohair@286: 
ohair@286:     public static boolean isVersion20(String version) {
ohair@286:         return JAXWS_VERSION_20.equals(version);
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * @param version
ohair@286:      * @return true if version is a 2.0 version
ohair@286:      */
ohair@286:     public static boolean isValidVersion(String version) {
ohair@286:         return isVersion20(version);
ohair@286:     }
ohair@286: 
ohair@286:     public static String getValidVersionString() {
ohair@286:         return JAXWS_VERSION_20;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * BugFix# 4948171
ohair@286:      * Method getCanonicalVersion.
ohair@286:      *
ohair@286:      * Converts a given version to the format "a.b.c.d"
ohair@286:      * a - major version
ohair@286:      * b - minor version
ohair@286:      * c - minor minor version
ohair@286:      * d - patch version
ohair@286:      *
ohair@286:      * @return int[] Canonical version number
ohair@286:      */
ohair@286:     public static int[] getCanonicalVersion(String version) {
ohair@286:         int[] canonicalVersion = new int[4];
ohair@286: 
ohair@286:         // initialize the default version numbers
ohair@286:         canonicalVersion[0] = 1;
ohair@286:         canonicalVersion[1] = 1;
ohair@286:         canonicalVersion[2] = 0;
ohair@286:         canonicalVersion[3] = 0;
ohair@286: 
ohair@286:         final String DASH_DELIM = "_";
ohair@286:         final String DOT_DELIM = ".";
ohair@286: 
ohair@286:         StringTokenizer tokenizer =
ohair@286:                 new StringTokenizer(version, DOT_DELIM);
ohair@286:         String token = tokenizer.nextToken();
ohair@286: 
ohair@286:         // first token is major version and must not have "_"
ohair@286:         canonicalVersion[0] = Integer.parseInt(token);
ohair@286: 
ohair@286:         // resolve the minor version
ohair@286:         token = tokenizer.nextToken();
ohair@286:         if (token.indexOf(DASH_DELIM) == -1) {
ohair@286:             // a.b
ohair@286:             canonicalVersion[1] = Integer.parseInt(token);
ohair@286:         } else {
ohair@286:             // a.b_c
ohair@286:             StringTokenizer subTokenizer =
ohair@286:                     new StringTokenizer(token, DASH_DELIM);
ohair@286:             canonicalVersion[1] = Integer.parseInt(subTokenizer.nextToken());
ohair@286:             // leave minorMinor default
ohair@286: 
ohair@286:             canonicalVersion[3] = Integer.parseInt(subTokenizer.nextToken());
ohair@286:         }
ohair@286: 
ohair@286:         // resolve the minorMinor and patch version, if any
ohair@286:         if (tokenizer.hasMoreTokens()) {
ohair@286:             token = tokenizer.nextToken();
ohair@286:             if (token.indexOf(DASH_DELIM) == -1) {
ohair@286:                 // minorMinor
ohair@286:                 canonicalVersion[2] = Integer.parseInt(token);
ohair@286: 
ohair@286:                 // resolve patch, if any
ohair@286:                 if (tokenizer.hasMoreTokens())
ohair@286:                     canonicalVersion[3] = Integer.parseInt(tokenizer.nextToken());
ohair@286:             } else {
ohair@286:                 // a.b.c_d
ohair@286:                 StringTokenizer subTokenizer =
ohair@286:                         new StringTokenizer(token, DASH_DELIM);
ohair@286:                 // minorMinor
ohair@286:                 canonicalVersion[2] = Integer.parseInt(subTokenizer.nextToken());
ohair@286: 
ohair@286:                 // patch
ohair@286:                 canonicalVersion[3] = Integer.parseInt(subTokenizer.nextToken());
ohair@286:             }
ohair@286:         }
ohair@286: 
ohair@286:         return canonicalVersion;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      *
ohair@286:      * @param version1
ohair@286:      * @param version2
ohair@286:      * @return -1, 0 or 1 based upon the comparison results
ohair@286:      * -1 if version1 is less than version2
ohair@286:      * 0 if version1 is equal to version2
ohair@286:      * 1 if version1 is greater than version2
ohair@286:      */
ohair@286:     public static int compare(String version1, String version2) {
ohair@286:         int[] canonicalVersion1 = getCanonicalVersion(version1);
ohair@286:         int[] canonicalVersion2 = getCanonicalVersion(version2);
ohair@286: 
ohair@286:         if (canonicalVersion1[0] < canonicalVersion2[0]) {
ohair@286:             return -1;
ohair@286:         } else if (canonicalVersion1[0] > canonicalVersion2[0]) {
ohair@286:             return 1;
ohair@286:         } else {
ohair@286:             if (canonicalVersion1[1] < canonicalVersion2[1]) {
ohair@286:                 return -1;
ohair@286:             } else if (canonicalVersion1[1] > canonicalVersion2[1]) {
ohair@286:                 return 1;
ohair@286:             } else {
ohair@286:                 if (canonicalVersion1[2] < canonicalVersion2[2]) {
ohair@286:                     return -1;
ohair@286:                 } else if (canonicalVersion1[2] > canonicalVersion2[2]) {
ohair@286:                     return 1;
ohair@286:                 } else {
ohair@286:                     if (canonicalVersion1[3] < canonicalVersion2[3]) {
ohair@286:                         return -1;
ohair@286:                 } else if (canonicalVersion1[3] > canonicalVersion2[3]) {
ohair@286:                     return 1;
ohair@286:                 } else
ohair@286:                     return 0;
ohair@286:                 }
ohair@286:             }
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     public static final String JAXWS_VERSION_20 = "2.0";
ohair@286:     // the latest version is default
ohair@286:     public static final String JAXWS_VERSION_DEFAULT = JAXWS_VERSION_20;
ohair@286: }