/*
* 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.dir;
import java.util.Enumeration;
import blackberry.core.FunctionSignature;
import blackberry.core.ScriptableFunctionBase;
import blackberry.io.FileConnectionWrapper;
/**
* JavaScript function class - returns a lists of directories in the specified path
* @author awong
*
*/
public final class ListDirectoriesFunction extends ScriptableFunctionBase {
public static final String NAME = "listDirectories";
/**
* Determine the name of directories that reside in a given directory.
*
* @param args
* args[0]: the complete URL path of the directory.
* @return a list of directory names
*/
public Object execute( Object thiz, Object[] args ) throws Exception {
String[] list = null;
FileConnectionWrapper fConnWrap = null;
try {
fConnWrap = new FileConnectionWrapper( args[ 0 ].toString() );
Enumeration fileEnum = fConnWrap.list();
int count = 0;
String fileName;
while( fileEnum.hasMoreElements() ) {
fileName = (String) fileEnum.nextElement();
if( fileName.charAt( fileName.length() - 1 ) == '/' ) { // Is directory
count++;
}
}
fileEnum = fConnWrap.list();
list = new String[ count ];
int i = 0;
while( fileEnum.hasMoreElements() ) {
fileName = (String) fileEnum.nextElement();
if( fileName.charAt( fileName.length() - 1 ) == '/' ) {// Is directory
list[ i++ ] = fileName;
}
}
} finally {
if( fConnWrap != null ) {
fConnWrap.close();
}
}
return list;
}
/**
* @see blackberry.core.ScriptableFunctionBase#getFunctionSignatures
*/
protected FunctionSignature[] getFunctionSignatures() {
FunctionSignature fs = new FunctionSignature( 1 );
fs.addParam( String.class, true );
return new FunctionSignature[] { fs };
}
}