* FileUtil: Add a rename method and a new copy method

core/java/src/freenet/support/CPUInformation/CPUID.java

@@ -402,7 +402,7 @@ public class CPUID {
         }
         // copy to install dir, ignore failure
         File newFile = new File(I2PAppContext.getGlobalContext().getBaseDir(), filename);
-        FileUtil.copy(outFile.getAbsolutePath(), newFile.getAbsolutePath(), false, true);
+        FileUtil.copy(outFile, newFile, false, true);
         return true;
     }
     

core/java/src/net/i2p/client/naming/SingleFileNamingService.java

@@ -193,7 +193,7 @@ public class SingleFileNamingService extends NamingService {
             out.write(d.toBase64());
             out.newLine();
             out.close();
-            boolean success = rename(tmp, _file);
+            boolean success = FileUtil.rename(tmp, _file);
             if (success) {
                 for (NamingServiceListener nsl : _listeners) { 
                     nsl.entryChanged(this, hostname, d, options);
@@ -284,7 +284,7 @@ public class SingleFileNamingService extends NamingService {
                 tmp.delete();
                 return false;
             }
-            success = rename(tmp, _file);
+            success = FileUtil.rename(tmp, _file);
             if (success) {
                 for (NamingServiceListener nsl : _listeners) { 
                     nsl.entryRemoved(this, hostname);
@@ -442,24 +442,6 @@ public class SingleFileNamingService extends NamingService {
         }
     }
 
-    private static boolean rename(File from, File to) {
-        boolean success = false;
-        boolean isWindows = System.getProperty("os.name").startsWith("Win");
-        // overwrite fails on windows
-        if (!isWindows)
-            success = from.renameTo(to);
-        if (!success) {
-            to.delete();
-            success = from.renameTo(to);
-            if (!success) {
-                // hard way
-                success = FileUtil.copy(from.getAbsolutePath(), to.getAbsolutePath(), true, true);
-                from.delete();
-            }
-        }
-        return success;
-    }
-
     private void getReadLock() {
         _fileLock.readLock().lock();
     }

core/java/src/net/i2p/util/FileUtil.java

@@ -400,7 +400,15 @@ public class FileUtil {
     public static boolean copy(String source, String dest, boolean overwriteExisting, boolean quiet) {
         File src = new File(source);
         File dst = new File(dest);
+        return copy(src, dst, overwriteExisting, quiet);
+    }
 
+    /**
+      * @param quiet don't log fails to wrapper log if true
+      * @return true if it was copied successfully
+      * @since 0.8.8
+      */
+    public static boolean copy(File src, File dst, boolean overwriteExisting, boolean quiet) {
 	if (dst.exists() && dst.isDirectory())
             dst = new File(dst, src.getName());
         
@@ -429,6 +437,35 @@ public class FileUtil {
         }
     }
     
+    /**
+     * Try to rename, if it doesn't work then copy and delete the old.
+     * Always overwrites any existing "to" file.
+     * Method moved from SingleFileNamingService.
+     *
+     * @return true if it was renamed / copied successfully
+     * @since 0.8.8
+     */
+    public static boolean rename(File from, File to) {
+        if (!from.exists())
+            return false;
+        boolean success = false;
+        boolean isWindows = System.getProperty("os.name").startsWith("Win");
+        // overwrite fails on windows
+        if (!isWindows)
+            success = from.renameTo(to);
+        if (!success) {
+            to.delete();
+            success = from.renameTo(to);
+            if (!success) {
+                // hard way
+                success = copy(from, to, true, true);
+                if (success)
+                    from.delete();
+            }
+        }
+        return success;
+    }
+
     /**
      * Usage: FileUtil (delete path | copy source dest | unzip path.zip)
      *

core/java/src/net/i2p/util/NativeBigInteger.java

@@ -606,7 +606,7 @@ public class NativeBigInteger extends BigInteger {
         }
         // copy to install dir, ignore failure
         File newFile = new File(I2PAppContext.getGlobalContext().getBaseDir(), filename);
-        FileUtil.copy(outFile.getAbsolutePath(), newFile.getAbsolutePath(), false, true);
+        FileUtil.copy(outFile, newFile, false, true);
         return true;
     }