/*
* Copyright 2010-2011 Research In Motion Limited.
*
* 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 blackberry.io.file;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import net.rim.device.api.io.file.FileIOException;
import blackberry.core.FunctionSignature;
import blackberry.core.ScriptableFunctionBase;
import blackberry.io.FileConnectionWrapper;
/**
* JavaScript function class - copies a file from one specified location to another
*/
public final class CopyFunction extends ScriptableFunctionBase {
public static final String NAME = "copy";
/**
* Copy a file to a given destination
*
* @param args
* args[0]: a complete URL path of the source file.
* args[1]: a complete URL path of the copied file. The URL path should end with the name of the new copied file.
*
* IOException will be thrown if source file does not yet exist, or the source path is to an directory or if
* destination file already exist
*/
public Object execute( Object thiz, Object[] args ) throws Exception {
FileConnectionWrapper fconnWrapIn = null;
DataInputStream dis = null;
FileConnectionWrapper fconnWrapOut = null;
DataOutputStream dos = null;
try {
fconnWrapIn = new FileConnectionWrapper( args[ 0 ].toString() );
dis = fconnWrapIn.openDataInputStream();
fconnWrapOut = new FileConnectionWrapper( args[ 1 ].toString() );
if( fconnWrapOut.isDirectory() ) {
throw new FileIOException( FileIOException.NOT_A_FILE );
}
fconnWrapOut.create();
dos = fconnWrapOut.openDataOutputStream();
for( int b = dis.read(); b != -1; b = dis.read() ) {
dos.write( b );
}
dos.flush();
} finally {
if( fconnWrapIn != null ) {
fconnWrapIn.close();
}
if( fconnWrapOut != null ) {
fconnWrapOut.close();
}
}
return UNDEFINED;
}
/**
* @see blackberry.core.ScriptableFunctionBase#getFunctionSignatures
*/
protected FunctionSignature[] getFunctionSignatures() {
FunctionSignature fs = new FunctionSignature( 2 );
fs.addParam( String.class, true );
fs.addParam( String.class, true );
return new FunctionSignature[] { fs };
}
}