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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.tools.ant.types.selectors;
import java.io.File;
import org.apache.tools.ant.types.EnumeratedAttribute;
import org.apache.tools.ant.types.Parameter;
/**
* Selector that selects a certain kind of file: directory or regular.
*
* @since 1.6
*/
public class TypeSelector extends BaseExtendSelector {
private String type = null;
/** Key to used for parameterized custom selector */
public static final String TYPE_KEY = "type";
/**
* Creates a new <code>TypeSelector</code> instance.
*
*/
public TypeSelector() {
}
/**
* @return a string describing this object
*/
public String toString() {
StringBuilder buf = new StringBuilder("{typeselector type: ");
buf.append(type);
buf.append("}");
return buf.toString();
}
/**
* Set the type of file to require.
* @param fileTypes the type of file - file or dir
*/
public void setType(FileType fileTypes) {
this.type = fileTypes.getValue();
}
/**
* When using this as a custom selector, this method will be called.
* It translates each parameter into the appropriate setXXX() call.
*
* @param parameters the complete set of parameters for this selector
*/
public void setParameters(Parameter[] parameters) {
super.setParameters(parameters);
if (parameters != null) {
for (int i = 0; i < parameters.length; i++) {
String paramname = parameters[i].getName();
if (TYPE_KEY.equalsIgnoreCase(paramname)) {
FileType t = new FileType();
t.setValue(parameters[i].getValue());
setType(t);
} else {
setError("Invalid parameter " + paramname);
}
}
}
}
/**
* Checks to make sure all settings are kosher. In this case, it
* means that the pattern attribute has been set.
*
*/
public void verifySettings() {
if (type == null) {
setError("The type attribute is required");
}
}
/**
* The heart of the matter. This is where the selector gets to decide
* on the inclusion of a file in a particular fileset.
*
* @param basedir the base directory the scan is being done from
* @param filename is the name of the file to check
* @param file is a java.io.File object the selector can use
* @return whether the file should be selected or not
*/
public boolean isSelected(File basedir, String filename, File file) {
// throw BuildException on error
validate();
if (file.isDirectory()) {
return type.equals(FileType.DIR);
} else {
return type.equals(FileType.FILE);
}
}
/**
* Enumerated attribute with the values for types of file
*/
public static class FileType extends EnumeratedAttribute {
/** the string value for file */
public static final String FILE = "file";
/** the string value for dir */
public static final String DIR = "dir";
/**
* @return the values as an array of strings
*/
public String[] getValues() {
return new String[]{FILE, DIR};
}
}
}
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