src/main/org/apache/tools/ant/types/selectors/AndSelector.java

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
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 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
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 */

package org.apache.tools.ant.types.selectors;

import java.io.File;
import java.util.Enumeration;

/**
 * This selector has a collection of other selectors, all of which have to
 * select a file in order for this selector to select it.
 *
 * @author <a href="mailto:bruce@callenish.com">Bruce Atherton</a>
 * @since 1.5
 */
public class AndSelector extends BaseSelectorContainer {

    /**
     * Default constructor.
     */
    public AndSelector() {
    }

    public String toString() {
        StringBuffer buf = new StringBuffer();
        if (hasSelectors()) {
            buf.append("{andselect: ");
            buf.append(super.toString());
            buf.append("}");
        }
        return buf.toString();
    }

    /**
     * Returns true (the file is selected) only if all other selectors
     * agree that the file should be selected.
     *
     * @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 boolean isSelected(File basedir, String filename, File file) {
        validate();
        Enumeration e = selectorElements();
        boolean result;

        while(e.hasMoreElements()) {
            result = ((FileSelector)e.nextElement()).isSelected(basedir,
                    filename,file);
            if (!result) {
                return false;
            }
        }
        return true;
    }

}