1 files changed, 143 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/impl/JarContributionScanner.java b/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/impl/JarContributionScanner.java
new file mode 100644
index 0000000000..25be92c310
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/scanner/impl/JarContributionScanner.java
@@ -0,0 +1,143 @@
+/*
+ * 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.contribution.scanner.impl;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+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.common.java.io.IOHelper;
+import org.apache.tuscany.sca.contribution.Artifact;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.ContributionFactory;
+import org.apache.tuscany.sca.contribution.PackageType;
+import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.scanner.ContributionScanner;
+
+/**
+ * JAR Contribution processor.
+ *
+ * @version $Rev$ $Date$
+ */
+public class JarContributionScanner implements ContributionScanner {
+    private ContributionFactory contributionFactory;
+
+    public JarContributionScanner(ContributionFactory contributionFactory) {
+        this.contributionFactory = contributionFactory;
+    }
+
+    public String getContributionType() {
+        return PackageType.JAR;
+    }
+
+    public List<Artifact> scan(Contribution contribution) throws ContributionReadException {
+
+        // Assume the URL references a JAR file
+        try {
+            URL url = new URL(contribution.getLocation());
+            JarInputStream jar = new JarInputStream(IOHelper.openStream(url));
+            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 artifacts
+                List<Artifact> artifacts = new ArrayList<Artifact>();
+                for(String uri : names) {
+                    Artifact artifact = contributionFactory.createArtifact();
+                    artifact.setURI(uri);
+                    artifact.setLocation(getArtifactURL(contribution, uri).toString());
+                    
+                    artifacts.add(artifact);
+                }
+                
+                contribution.getTypes().add(getContributionType());
+                return artifacts;
+
+            } finally {
+                jar.close();
+            }
+        } catch (IOException e) {
+            throw new ContributionReadException(e);
+        }
+    }
+    
+    /**
+     * Produces a location URL for a given artifact in the contribution
+     * 
+     * @param contribution
+     * @param artifact
+     * @return
+     * @throws ContributionReadException
+     */
+    private static URL getArtifactURL(Contribution contribution, String artifact) throws ContributionReadException {
+        try {
+            URL url;
+            if (contribution.toString().startsWith("jar:")) {
+                url = new URL(new URL(contribution.getLocation()), artifact.toString());
+            } else {
+                url = new URL("jar:" + contribution.getLocation() + "!/" + artifact);
+            }
+            return url;
+        } catch (MalformedURLException e) {
+            throw new ContributionReadException(e);
+        }
+    }
+}