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Diffstat (limited to 'sandbox/sebastien/java/sca-node/modules/node-api/src/main/java/org/apache/tuscany/sca/node/util/SCAContributionUtil.java')
| -rw-r--r-- | sandbox/sebastien/java/sca-node/modules/node-api/src/main/java/org/apache/tuscany/sca/node/util/SCAContributionUtil.java | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/sca-node/modules/node-api/src/main/java/org/apache/tuscany/sca/node/util/SCAContributionUtil.java b/sandbox/sebastien/java/sca-node/modules/node-api/src/main/java/org/apache/tuscany/sca/node/util/SCAContributionUtil.java new file mode 100644 index 0000000000..b005232370 --- /dev/null +++ b/sandbox/sebastien/java/sca-node/modules/node-api/src/main/java/org/apache/tuscany/sca/node/util/SCAContributionUtil.java @@ -0,0 +1,111 @@ +/* + * 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.tuscany.sca.node.util; + +import java.io.File; +import java.net.MalformedURLException; +import java.net.URL; + + +/** + * Utility methods to find an SCA contribution from a class or a resource. + * + * @version $Rev$ $Date$ + */ +public class SCAContributionUtil { + + /** + * Given a class this method finds the contribution that it belongs to. + * This could be either a local directory of a jar file. + * + * @param clazz + * @return the contribution URL + * @throws MalformedURLException + */ + public static URL findContributionFromClass(Class<?> clazz) throws MalformedURLException { + return findContributionFromResource(clazz.getClassLoader(), clazz.getName().replace('.', '/') + ".class"); + } + + /** + * Given the path to a resource this method finds the contribution that it belongs to + * this could be either a local directory of a jar file. + * + * @param classLoader + * @param compositeString + * @return the contribution URL + * @throws MalformedURLException + */ + public static URL findContributionFromResource(ClassLoader classLoader, String compositeString) throws MalformedURLException { + + URL contributionURL = classLoader.getResource(compositeString); + + if ( contributionURL != null ){ + String contributionURLString = contributionURL.toExternalForm(); + String protocol = contributionURL.getProtocol(); + + if ("file".equals(protocol)) { + // directory contribution + if (contributionURLString.endsWith(compositeString)) { + String location = contributionURLString.substring(0, contributionURLString.lastIndexOf(compositeString)); + // workaround from evil URL/URI form Maven + contributionURL = toFile(new URL(location)).toURI().toURL(); + } + + } else if ("jar".equals(protocol)) { + // jar contribution + String location = contributionURLString.substring(4, contributionURLString.lastIndexOf("!/")); + // workaround for evil URL/URI from Maven + contributionURL = toFile(new URL(location)).toURI().toURL(); + } + } + + return contributionURL; + } + + /** + * Convert from a <code>URL</code> to a <code>File</code>. + * <p> + * From version 1.1 this method will decode the URL. Syntax such as + * <code>file:///my%20docs/file.txt</code> will be correctly decoded to + * <code>/my docs/file.txt</code>. + * + * @param url the file URL to convert, null returns null + * @return the equivalent <code>File</code> object, or <code>null</code> + * if the URL's protocol is not <code>file</code> + * @throws IllegalArgumentException if the file is incorrectly encoded + */ + private static File toFile(URL url) { + if (url == null || !url.getProtocol().equals("file")) { + return null; + } else { + String filename = url.getFile().replace('/', File.separatorChar); + int pos = 0; + while ((pos = filename.indexOf('%', pos)) >= 0) { // NOPMD + if (pos + 2 < filename.length()) { + String hexStr = filename.substring(pos + 1, pos + 3); + char ch = (char)Integer.parseInt(hexStr, 16); + filename = filename.substring(0, pos) + ch + filename.substring(pos + 3); + } + } + return new File(filename); + } + } + +}
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