svn commit: r354876 - /geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java

[db...@apache.org]

Author: dblevins
Date: Wed Dec  7 14:21:40 2005
New Revision: 354876

URL: http://svn.apache.org/viewcvs?rev=354876&view=rev
Log:
Tool for converting files <-> gzipped byte arrays.  Saves network bandwidth on those very large files.

Added:
    geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java

Added: geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java
URL: http://svn.apache.org/viewcvs/geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java?rev=354876&view=auto
==============================================================================
--- geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java (added)
+++ geronimo/gbuild/trunk/gbuild-agent/src/main/java/org/apache/geronimo/gbuild/agent/GZipUtils.java Wed Dec  7 14:21:40 2005
@@ -0,0 +1,92 @@
+/**
+ *
+ * Copyright 2004 The Apache Software Foundation
+ *
+ *  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.apache.geronimo.gbuild.agent;
+
+import org.codehaus.plexus.util.IOUtil;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.FileOutputStream;
+import java.util.zip.GZIPOutputStream;
+import java.util.zip.GZIPInputStream;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class GZipUtils {
+
+    /**
+     * Reads data from a file in to a gzip byte array.
+     *
+     * @param file  The name of the file to read.
+     * @return The GZipped content of the file.
+     */
+    public static byte[] fileRead(File file) throws IOException {
+
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        GZIPOutputStream out = new GZIPOutputStream(baos);
+
+        FileInputStream in = null;
+
+        try {
+            in = new FileInputStream(file);
+            int count;
+            byte[] b = new byte[512];
+            while ((count = in.read(b)) > 0) {
+                out.write(b, 0, count);
+            }
+        }
+        finally {
+            IOUtil.close(in);
+            IOUtil.close(out);
+        }
+
+        return baos.toByteArray();
+    }
+
+    /**
+     * Writes data to a file. The file will be created if it does not exist.
+     *
+     * @param file  The name of the file to write.
+     * @param bytes The GZipped content to write to the file.
+     */
+    public static void fileWrite(File file, byte[] bytes) throws IOException {
+
+        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
+
+        GZIPInputStream in = new GZIPInputStream(bais);
+
+        FileOutputStream out = null;
+
+        try {
+            out = new FileOutputStream(file);
+            int count;
+            byte[] b = new byte[512];
+            while ((count = in.read(b)) > 0) {
+                out.write(b, 0, count);
+            }
+        }
+        finally {
+            IOUtil.close(out);
+            IOUtil.close(in);
+        }
+    }
+}