diff -r 31b57f2b8d0b -r 2577ddb7e710 langtools/src/share/classes/com/sun/tools/sjavac/CopyFile.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/sjavac/CopyFile.java	Fri Jan 18 00:16:21 2013 +0100
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.sjavac;
+
+import java.io.*;
+import java.net.URI;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Map;
+
+/**
+ * The copy file transform simply copies a matching file from -src to -d .
+ * Such files are typically images, xml documents and other data files.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own
+ * risk.  This code and its internal interfaces are subject to change
+ * or deletion without notice.</b></p>
+ */
+public class CopyFile implements Transformer {
+
+    public void setExtra(String e) {
+    }
+
+    public void setExtra(String[] a) {
+    }
+
+    public boolean transform(Map<String,Set<URI>> pkgSrcs,
+                             Set<URI> visibleSrcs,
+                             Map<URI,Set<String>> visibleClasses,
+                             Map<String,Set<String>> oldPackageDependents,
+                             URI destRoot,
+                             Map<String,Set<URI>>    packageArtifacts,
+                             Map<String,Set<String>> packageDependencies,
+                             Map<String,String>      packagePubapis,
+                             int debugLevel,
+                             boolean incremental,
+                             int numCores,
+                             PrintStream out,
+                             PrintStream err)
+    {
+        boolean rc = true;
+        String dest_filename;
+        File dest;
+
+        for (String pkgName : pkgSrcs.keySet()) {
+            String pkgNameF = Util.toFileSystemPath(pkgName);
+            for (URI u : pkgSrcs.get(pkgName)) {
+                File src = new File(u);
+                File destDir;
+                destDir = new File(destRoot.getPath()+File.separator+pkgNameF);
+                dest_filename = destRoot.getPath()+File.separator+pkgNameF+File.separator+src.getName();
+                dest = new File(dest_filename);
+
+                if (!destDir.isDirectory()) {
+                    if (!destDir.mkdirs()) {
+                       Log.error("Error: The copier could not create the directory "+
+                                           destDir.getPath());
+                        return false;
+                    }
+                }
+
+                Set<URI> as = packageArtifacts.get(pkgName);
+                if (as == null) {
+                    as = new HashSet<URI>();
+                    packageArtifacts.put(pkgName, as);
+                }
+                as.add(dest.toURI());
+
+                if (dest.exists() && dest.lastModified() > src.lastModified()) {
+                    // A copied file exists, and its timestamp is newer than the source.
+                    continue;
+                }
+
+                Log.info("Copying "+pkgNameF+File.separator+src.getName());
+
+                try (InputStream fin = new FileInputStream(src);
+                     OutputStream fout = new FileOutputStream(dest)) {
+                    byte[] buf = new byte[1024];
+                    int len;
+                    while ((len = fin.read(buf)) > 0){
+                        fout.write(buf, 0, len);
+                    }
+                }
+                catch(IOException e){
+                    Log.error("Could not copy the file "+src.getPath()+" to "+dest.getPath());
+                    rc = false;
+                }
+            }
+        }
+        return rc;
+    }
+}