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Diffstat (limited to 'branches/sca-java-1.5.2/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/scanner/impl/JarContributionScanner.java')
-rw-r--r-- | branches/sca-java-1.5.2/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/scanner/impl/JarContributionScanner.java | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/branches/sca-java-1.5.2/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/scanner/impl/JarContributionScanner.java b/branches/sca-java-1.5.2/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/scanner/impl/JarContributionScanner.java new file mode 100644 index 0000000000..9dd1b3a15b --- /dev/null +++ b/branches/sca-java-1.5.2/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/scanner/impl/JarContributionScanner.java @@ -0,0 +1,121 @@ +/* + * 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.workspace.scanner.impl; + +import java.io.IOException; +import java.net.MalformedURLException; +import java.net.URL; +import java.net.URLConnection; +import java.util.ArrayList; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.jar.JarEntry; +import java.util.jar.JarInputStream; + +import org.apache.tuscany.sca.contribution.scanner.ContributionScanner; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; + +/** + * JAR Contribution processor. + * + * @version $Rev$ $Date$ + */ +public class JarContributionScanner implements ContributionScanner { + + public JarContributionScanner() { + } + + public String getContributionType() { + return "application/x-compressed"; + } + + public URL getArtifactURL(URL contributionURL, String artifact) throws ContributionReadException { + try { + URL url; + if (contributionURL.toString().startsWith("jar:")) { + url = new URL(contributionURL, artifact.toString()); + } else { + url = new URL("jar:" + contributionURL.toExternalForm() + "!/" + artifact); + } + return url; + } catch (MalformedURLException e) { + throw new ContributionReadException(e); + } + } + + public List<String> getArtifacts(URL contributionURL) throws ContributionReadException { + + // Assume the URL references a JAR file + try { + URLConnection connection = contributionURL.openConnection(); + connection.setUseCaches(false); + JarInputStream jar = new JarInputStream(connection.getInputStream()); + try { + Set<String> names = new HashSet<String>(); + while (true) { + JarEntry entry = jar.getNextJarEntry(); + if (entry == null) { + // EOF + break; + } + + String name = entry.getName(); + if (name.length() != 0 && !name.startsWith(".")) { + + // Trim trailing / + if (name.endsWith("/")) { + name = name.substring(0, name.length() - 1); + } + + // Add the entry name + if (!names.contains(name)) { + names.add(name); + + // Add parent folder names to the list too + for (;;) { + int s = name.lastIndexOf('/'); + if (s == -1) { + name = ""; + } else { + name = name.substring(0, s); + } + if (name.length() != 0 && !names.contains(name)) { + names.add(name); + } else { + break; + } + } + } + } + } + + // Return list of URIs + List<String> artifacts = new ArrayList<String>(names); + return artifacts; + + } finally { + jar.close(); + } + } catch (IOException e) { + throw new ContributionReadException(e); + } + } +} |