Added xz compression support

pom.xml

@@ -80,6 +80,12 @@
       <version>3.0.0</version>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+      <groupId>org.tukaani</groupId>
+      <artifactId>xz</artifactId>
+      <version>1.5</version>
+      <scope>runtime</scope>
+    </dependency>
   </dependencies>
 
 

src/main/java/org/codehaus/plexus/archiver/tar/PlexusIoTarXZFileResourceCollection.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.tar;
+
+import java.io.File;
+
+/**
+ *
+ * @author philip.lourandos
+ */
+public class PlexusIoTarXZFileResourceCollection extends
+        PlexusIoTarFileResourceCollection
+{
+
+    public PlexusIoTarXZFileResourceCollection()
+    {
+    }
+
+    @Override
+    protected TarFile newTarFile(File file)
+    {
+        return new XZTarFile( file );
+    }
+}

src/main/java/org/codehaus/plexus/archiver/tar/TarArchiver.java

@@ -20,6 +20,7 @@
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
 import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream;
+import org.apache.commons.compress.compressors.xz.XZCompressorOutputStream;
 import org.codehaus.plexus.archiver.AbstractArchiver;
 import org.codehaus.plexus.archiver.ArchiveEntry;
 import org.codehaus.plexus.archiver.ArchiverException;
@@ -465,7 +466,8 @@ public static enum TarCompressionMethod
         none,
         gzip,
         bzip2,
-        snappy
+        snappy,
+        xz
 
     }
 
@@ -484,6 +486,11 @@ else if ( TarCompressionMethod.snappy.equals( tarCompressionMethod ) )
         {
             return new SnappyOutputStream( bufferedOutputStream( ostream ) );
         }
+        else if (TarCompressionMethod.xz.equals( tarCompressionMethod ) ) 
+        {
+            return new XZCompressorOutputStream( bufferedOutputStream( ostream ) );
+        }
+
         return ostream;
     }
 

src/main/java/org/codehaus/plexus/archiver/tar/TarUnArchiver.java

@@ -20,6 +20,7 @@
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
 import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
+import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
 import org.codehaus.plexus.archiver.AbstractUnArchiver;
 import org.codehaus.plexus.archiver.ArchiverException;
 import org.codehaus.plexus.archiver.util.Streams;
@@ -63,6 +64,7 @@ public TarUnArchiver( File sourceFile )
      * <li>gzip - Gzip compression</li>
      * <li>bzip2 - Bzip2 compression</li>
      * <li>snappy - Snappy compression</li>
+     * <li>xz - Xz compression</li>
      * </ul>
      *
      * @param method compression method
@@ -149,6 +151,10 @@ else if ( compression == UntarCompressionMethod.BZIP2 )
         else if ( compression == UntarCompressionMethod.SNAPPY )
         {
             return new SnappyInputStream( istream, true );
+        } 
+        else if (compression == UntarCompressionMethod.XZ) 
+        {
+            return new XZCompressorInputStream(istream);
         }
         return istream;
     }
@@ -161,7 +167,8 @@ public static enum UntarCompressionMethod
         NONE( "none" ),
         GZIP( "gzip" ),
         BZIP2( "bzip2" ),
-        SNAPPY( "snappy" );
+        SNAPPY( "snappy" ),
+        XZ("xz");
 
         final String value;
 

src/main/java/org/codehaus/plexus/archiver/tar/TarXZUnArchiver.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.tar;
+
+import java.io.File;
+
+/**
+ *
+ * @author philip.lourandos
+ */
+public class TarXZUnArchiver extends TarUnArchiver
+{
+    public TarXZUnArchiver() {
+        setupCompressionMethod();
+    }
+
+    public TarXZUnArchiver(File sourceFile) {
+        super(sourceFile);
+
+        setupCompressionMethod();
+    }
+
+    private final void setupCompressionMethod() 
+    {
+        setCompression(TarUnArchiver.UntarCompressionMethod.XZ);
+    }
+}

src/main/java/org/codehaus/plexus/archiver/tar/XZTarFile.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.tar;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import org.codehaus.plexus.archiver.xz.XZUnArchiver;
+
+/**
+ *
+ * @author philip.lourandos
+ */
+public class XZTarFile extends TarFile 
+{
+
+    public XZTarFile ( File file ) 
+    {
+        super(file);
+    }
+
+    @Override
+    protected InputStream getInputStream( File file ) throws IOException
+    {
+        return XZUnArchiver.getXZInputStream( super.getInputStream( file ) );
+    }
+}

src/main/java/org/codehaus/plexus/archiver/xz/PlexusIoXZResourceCollection.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.xz;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import org.codehaus.plexus.components.io.attributes.Java7FileAttributes;
+import org.codehaus.plexus.components.io.attributes.PlexusIoResourceAttributes;
+import org.codehaus.plexus.components.io.resources.PlexusIoCompressedFileResourceCollection;
+
+/**
+ *
+ * @author lore
+ */
+public class PlexusIoXZResourceCollection extends PlexusIoCompressedFileResourceCollection {
+
+    @Override
+    protected PlexusIoResourceAttributes getAttributes(File file) throws IOException {
+        return new Java7FileAttributes(file, new HashMap<Integer, String>(), new HashMap<Integer, String>());
+    }
+
+    @Override
+    protected String getDefaultExtension() {
+        return ".xz";
+    }
+
+    @Override
+    protected InputStream getInputStream(File file) throws IOException {
+        FileInputStream fileIs = new FileInputStream(file);
+
+        return XZUnArchiver.getXZInputStream(fileIs);
+
+    }
+}

src/main/java/org/codehaus/plexus/archiver/xz/XZArchiver.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.xz;
+
+import java.io.IOException;
+import org.codehaus.plexus.archiver.AbstractArchiver;
+import org.codehaus.plexus.archiver.ArchiveEntry;
+import org.codehaus.plexus.archiver.ArchiverException;
+import org.codehaus.plexus.archiver.ResourceIterator;
+
+/**
+ *
+ * @author philiplourandos
+ */
+public class XZArchiver extends AbstractArchiver {
+
+    private final XZCompressor compressor = new XZCompressor();
+
+    public XZArchiver() 
+    {
+    }
+
+    @Override
+    protected void execute() throws ArchiverException, IOException 
+    {
+        if ( !checkForced()) 
+        {
+            return;
+        }
+
+        ResourceIterator iter = getResources();
+        ArchiveEntry entry = iter.next();
+        if ( iter.hasNext() )
+        {
+            throw new ArchiverException( "There is more than one file in input." );
+        }
+        compressor.setSource( entry.getResource() );
+        compressor.setDestFile( getDestFile() );
+        compressor.compress();
+    }
+
+    @Override
+    public boolean isSupportingForced() 
+    {
+        return true;
+    }
+
+    @Override
+    protected void close() throws IOException 
+    {
+        compressor.close();
+    }
+
+    @Override
+    protected String getArchiveType() 
+    {
+        return "xz";
+    }
+}

src/main/java/org/codehaus/plexus/archiver/xz/XZCompressor.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2016 Codehaus.
+ *
+ * Licensed 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.codehaus.plexus.archiver.xz;
+
+import java.io.IOException;
+import org.apache.commons.compress.compressors.xz.XZCompressorOutputStream;
+import org.codehaus.plexus.archiver.ArchiverException;
+import org.codehaus.plexus.archiver.util.Compressor;
+import org.codehaus.plexus.util.IOUtil;
+
+import static org.codehaus.plexus.archiver.util.Streams.bufferedOutputStream;
+import static org.codehaus.plexus.archiver.util.Streams.fileOutputStream;
+
+/**
+ *
+ * @author philip.lourandos
+ */
+public class XZCompressor extends Compressor 
+{
+    private XZCompressorOutputStream xzOut;
+
+    public XZCompressor() 
+    {
+    }
+
+    @Override
+    public void compress() throws ArchiverException 
+    {
+        try
+        {
+            xzOut = new XZCompressorOutputStream( bufferedOutputStream( fileOutputStream( getDestFile() ) ) );
+
+            compress( getSource(), xzOut);
+        }
+        catch ( IOException ioe ) 
+        {
+            throw new ArchiverException( "Problem creating xz " + ioe.getMessage(), ioe);
+        }
+    }
+
+    @Override
+    public void close() 
+    {
+        IOUtil.close( xzOut );
+        xzOut = null;
+    }
+}