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/*
* Copyright 2002-2004 The Apache Software Foundation
*
* 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 org.apache.tools.ant.types.selectors;
import java.io.File;
import java.util.Enumeration;
import java.util.Vector;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.selectors.modifiedselector.ModifiedSelector;
/**
* This is the base class for selectors that can contain other selectors.
*
* @since 1.5
*/
public abstract class BaseSelectorContainer extends BaseSelector
implements SelectorContainer {
private Vector selectorsList = new Vector();
/**
* Default constructor.
*/
public BaseSelectorContainer() {
}
/**
* Indicates whether there are any selectors here.
* @return true if there are selectors
*/
public boolean hasSelectors() {
return !(selectorsList.isEmpty());
}
/**
* Gives the count of the number of selectors in this container
* @return the number of selectors
*/
public int selectorCount() {
return selectorsList.size();
}
/**
* Returns the set of selectors as an array.
* @param p the current project
* @return an array of selectors
*/
public FileSelector[] getSelectors(Project p) {
FileSelector[] result = new FileSelector[selectorsList.size()];
selectorsList.copyInto(result);
return result;
}
/**
* Returns an enumerator for accessing the set of selectors.
* @return an enumerator for the selectors
*/
public Enumeration selectorElements() {
return selectorsList.elements();
}
/**
* Convert the Selectors within this container to a string. This will
* just be a helper class for the subclasses that put their own name
* around the contents listed here.
*
* @return comma separated list of Selectors contained in this one
*/
public String toString() {
StringBuffer buf = new StringBuffer();
Enumeration e = selectorElements();
if (e.hasMoreElements()) {
while (e.hasMoreElements()) {
buf.append(e.nextElement().toString());
if (e.hasMoreElements()) {
buf.append(", ");
}
}
}
return buf.toString();
}
/**
* Add a new selector into this container.
*
* @param selector the new selector to add
*/
public void appendSelector(FileSelector selector) {
selectorsList.addElement(selector);
}
/**
* <p>This implementation validates the container by calling
* verifySettings() and then validates each contained selector
* provided that the selector implements the validate interface.
* </p>
* <p>Ordinarily, this will validate all the elements of a selector
* container even if the isSelected() method of some elements is
* never called. This has two effects:</p>
* <ul>
* <li>Validation will often occur twice.
* <li>Since it is not required that selectors derive from
* BaseSelector, there could be selectors in the container whose
* error conditions are not detected if their isSelected() call
* is never made.
* </ul>
*/
public void validate() {
verifySettings();
String errmsg = getError();
if (errmsg != null) {
throw new BuildException(errmsg);
}
Enumeration e = selectorElements();
while (e.hasMoreElements()) {
Object o = e.nextElement();
if (o instanceof BaseSelector) {
((BaseSelector) o).validate();
}
}
}
/**
* Method that each selector will implement to create their selection
* behaviour. This is what makes SelectorContainer abstract.
*
* @param basedir the base directory the scan is being done from
* @param filename the name of the file to check
* @param file a java.io.File object for the filename that the selector
* can use
* @return whether the file should be selected or not
*/
public abstract boolean isSelected(File basedir, String filename,
File file);
/* Methods below all add specific selectors */
/**
* add a "Select" selector entry on the selector list
* @param selector the selector to add
*/
public void addSelector(SelectSelector selector) {
appendSelector(selector);
}
/**
* add an "And" selector entry on the selector list
* @param selector the selector to add
*/
public void addAnd(AndSelector selector) {
appendSelector(selector);
}
/**
* add an "Or" selector entry on the selector list
* @param selector the selector to add
*/
public void addOr(OrSelector selector) {
appendSelector(selector);
}
/**
* add a "Not" selector entry on the selector list
* @param selector the selector to add
*/
public void addNot(NotSelector selector) {
appendSelector(selector);
}
/**
* add a "None" selector entry on the selector list
* @param selector the selector to add
*/
public void addNone(NoneSelector selector) {
appendSelector(selector);
}
/**
* add a majority selector entry on the selector list
* @param selector the selector to add
*/
public void addMajority(MajoritySelector selector) {
appendSelector(selector);
}
/**
* add a selector date entry on the selector list
* @param selector the selector to add
*/
public void addDate(DateSelector selector) {
appendSelector(selector);
}
/**
* add a selector size entry on the selector list
* @param selector the selector to add
*/
public void addSize(SizeSelector selector) {
appendSelector(selector);
}
/**
* add a selector filename entry on the selector list
* @param selector the selector to add
*/
public void addFilename(FilenameSelector selector) {
appendSelector(selector);
}
/**
* add an extended selector entry on the selector list
* @param selector the selector to add
*/
public void addCustom(ExtendSelector selector) {
appendSelector(selector);
}
/**
* add a contains selector entry on the selector list
* @param selector the selector to add
*/
public void addContains(ContainsSelector selector) {
appendSelector(selector);
}
/**
* add a present selector entry on the selector list
* @param selector the selector to add
*/
public void addPresent(PresentSelector selector) {
appendSelector(selector);
}
/**
* add a depth selector entry on the selector list
* @param selector the selector to add
*/
public void addDepth(DepthSelector selector) {
appendSelector(selector);
}
/**
* add a depends selector entry on the selector list
* @param selector the selector to add
*/
public void addDepend(DependSelector selector) {
appendSelector(selector);
}
/**
* adds a different selector to the selector list
* @param selector the selector to add
*/
public void addDifferent(DifferentSelector selector) {
appendSelector(selector);
}
/**
* adds a type selector to the selector list
* @param selector the selector to add
*/
public void addType(TypeSelector selector) {
appendSelector(selector);
}
/**
* add a regular expression selector entry on the selector list
* @param selector the selector to add
*/
public void addContainsRegexp(ContainsRegexpSelector selector) {
appendSelector(selector);
}
/**
* add the modified selector
* @param selector the selector to add
* @since ant 1.6
*/
public void addModified(ModifiedSelector selector) {
appendSelector(selector);
}
/**
* add an arbitary selector
* @param selector the selector to add
* @since Ant 1.6
*/
public void add(FileSelector selector) {
appendSelector(selector);
}
}
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