Add IOUtil - generic URL to File and stream to stream copy

1 files changed, 84 insertions, 0 deletions

diff --git a/src/java/com/jogamp/common/util/IOUtil.java b/src/java/com/jogamp/common/util/IOUtil.java
new file mode 100644
index 0000000..b3160c5
--- /dev/null
+++ b/src/java/com/jogamp/common/util/IOUtil.java
@@ -0,0 +1,84 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.common.util;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URL;
+import java.net.URLConnection;
+
+public class IOUtil {
+    
+    // Copy the specified URL to the specified File
+    public static int copyURLToFile(URL url, File outFile) throws IOException {
+        URLConnection conn = url.openConnection();
+        conn.connect();        
+
+        int totalNumBytes = 0;
+        InputStream in = new BufferedInputStream(conn.getInputStream());
+        try {
+            OutputStream out = new BufferedOutputStream(new FileOutputStream(outFile));
+            try {
+                totalNumBytes = copyStream(in, out, conn.getContentLength());
+            } finally {
+                out.close();
+            }
+        } finally {
+            in.close();
+        }
+        return totalNumBytes;
+    }
+
+    /**
+     * Copy the specified input stream to the specified output stream. The total
+     * number of bytes written is returned. If the close flag is set, both
+     * streams are closed upon completion.
+     */
+    public static int copyStream(InputStream in, OutputStream out, int totalNumBytes) throws IOException {
+        int numBytes = 0;
+        final int BUFFER_SIZE = 1000;
+        byte[] buf = new byte[BUFFER_SIZE];
+        while (true) {
+            int count;
+            if ((count = in.read(buf)) == -1) {
+                break;
+            }
+            out.write(buf, 0, count);
+            numBytes += count;
+        }
+        return numBytes;
+    }
+
+
+}