| /* |
| * 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.felix.utils.version; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public final class VersionCleaner { |
| |
| private VersionCleaner() { } |
| |
| |
| private static final Pattern FUZZY_VERSION = Pattern.compile("(\\d+)(\\.(\\d+)(\\.(\\d+))?)?([^a-zA-Z0-9](.*))?", Pattern.DOTALL); |
| |
| /** |
| * Clean up version parameters. Other builders use more fuzzy definitions of |
| * the version syntax. This method cleans up such a version to match an OSGi |
| * version. |
| * |
| * @param version The version to clean |
| * @return The cleaned version |
| */ |
| public static String clean(String version) |
| { |
| if (version == null || version.length() == 0) |
| { |
| return "0.0.0"; |
| } |
| String clean = fastSyntax(version); |
| if (clean != null) |
| { |
| return clean; |
| } |
| StringBuffer result = new StringBuffer(); |
| Matcher m = FUZZY_VERSION.matcher(version); |
| if (m.matches()) |
| { |
| String major = m.group(1); |
| String minor = m.group(3); |
| String micro = m.group(5); |
| String qualifier = m.group(7); |
| |
| if (major != null) |
| { |
| result.append(major); |
| if (minor != null) |
| { |
| result.append("."); |
| result.append(minor); |
| if (micro != null) |
| { |
| result.append("."); |
| result.append(micro); |
| if (qualifier != null) |
| { |
| result.append("."); |
| cleanupModifier(result, qualifier); |
| } |
| } |
| else if (qualifier != null) |
| { |
| result.append(".0."); |
| cleanupModifier(result, qualifier); |
| } |
| else |
| { |
| result.append(".0"); |
| } |
| } |
| else if (qualifier != null) |
| { |
| result.append(".0.0."); |
| cleanupModifier(result, qualifier); |
| } |
| else |
| { |
| result.append(".0.0"); |
| } |
| } |
| } |
| else |
| { |
| result.append("0.0.0."); |
| cleanupModifier(result, version); |
| } |
| return result.toString(); |
| } |
| |
| private static void cleanupModifier(StringBuffer result, String modifier) { |
| for (int i = 0; i < modifier.length(); i++) { |
| char c = modifier.charAt(i); |
| if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') |
| || (c >= 'A' && c <= 'Z') || c == '_' || c == '-') |
| result.append(c); |
| else |
| result.append('_'); |
| } |
| } |
| |
| private static String fastSyntax(String version) { |
| int state = 0; |
| for (int i = 0, l = version.length(); i < l; i++) { |
| char ch = version.charAt(i); |
| switch (state) { |
| case 0: |
| case 2: |
| case 4: |
| if (ch < '0' || ch > '9') { |
| return null; |
| } |
| state++; |
| break; |
| case 1: |
| case 3: |
| case 5: |
| if (ch == '.') { |
| state++; |
| } else if (ch < '0' || ch > '9') { |
| return null; |
| } |
| break; |
| case 6: |
| if (ch == '.') { |
| return null; |
| } |
| break; |
| } |
| } |
| switch (state) { |
| case 0: |
| case 1: |
| return version + ".0.0"; |
| case 2: |
| case 3: |
| return version + ".0"; |
| default: |
| return version; |
| } |
| } |
| |
| } |