/*
* 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.DataOutputStream;
import blackberry.core.Blob;
import blackberry.core.FunctionSignature;
import blackberry.core.ScriptableFunctionBase;
import blackberry.io.FileConnectionWrapper;
/**
* JavaScript function class - saves the specified file by writing it back to the filesystem
* @author awong
*
*/
public final class SaveFileFunction extends ScriptableFunctionBase {
public static final String NAME = "saveFile";
/**
* Save a Blob into a file.
*
* @param args
* args[0] : A complete URL path of the file. The name of the file should specified at the end of the path, and the
* file should not exist prior to the method call. args[1] : byte array that needs to be saved.
*
* IOException will be thrown if 1. src file does not yet exist, or the src path is to an directory
*/
public Object execute( Object thiz, Object[] args ) throws Exception {
FileConnectionWrapper fConnWrap = null;
DataOutputStream dos = null;
try {
fConnWrap = new FileConnectionWrapper( args[ 0 ].toString() );
fConnWrap.create();
dos = fConnWrap.openDataOutputStream();
byte[] data = ( (Blob) ( args[ 1 ] ) ).getBytes();
dos.write( data, 0, data.length );
dos.flush();
} finally {
if( fConnWrap != null ) {
fConnWrap.close();
}
}
return UNDEFINED;
}
/**
* @see blackberry.core.ScriptableFunctionBase#getFunctionSignatures
*/
protected FunctionSignature[] getFunctionSignatures() {
FunctionSignature fs = new FunctionSignature( 2 );
fs.addParam( String.class, true );
fs.addParam( Blob.class, true );
return new FunctionSignature[] { fs };
}
}