FileSetGroup.java

package org.eclipse.buckminster.ant.types;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.StringTokenizer;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.types.DataType;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.ant.types.Reference;
import org.eclipse.buckminster.core.helpers.FileUtils;

public class FileSetGroup extends DataType implements Cloneable {
	private ArrayList<FileSet> fileSets;

	public FileSetGroup() {
	}

	/**
	 * Adds a nested <code><fileset></code> element.
	 */
	public void addFileset(FileSet fs) throws BuildException {
		if (this.isReference())
			throw noChildrenAllowed();
		if (fileSets == null)
			fileSets = new ArrayList<FileSet>();
		fileSets.add(fs);
		setChecked(false);
	}

	public List<FileSet> getFileSets() {
		if (this.isReference()) {
			Object refObj = this.getRefid().getReferencedObject();
			if (refObj instanceof FileSetGroup)
				return ((FileSetGroup) refObj).getFileSets();
			throw new BuildException("Referenced object is not a FileSetGroup");
		}
		return fileSets == null ? Collections.<FileSet> emptyList() : fileSets;
	}

	/**
	 * Makes this instance in effect a reference to another Path instance.
	 * 
	 * <p>
	 * You must not set another attribute or nest elements inside this element
	 * if you make it a reference.
	 * </p>
	 */
	@Override
	public void setRefid(Reference r) throws BuildException {
		if (fileSets != null)
			throw tooManyAttributes();
		super.setRefid(r);
	}

	public void setValue(String value) {
		if (value == null || value.length() < 1)
			return;

		StringTokenizer fileSetDecls = new StringTokenizer(value.substring(1), "?");
		while (fileSetDecls.hasMoreTokens()) {
			StringTokenizer tokens = new StringTokenizer(fileSetDecls.nextToken(), FileUtils.PATH_SEP);
			if (!tokens.hasMoreTokens())
				continue;

			FileSet fs = new FileSet();
			fs.setProject(getProject());
			fs.setDir(new File(tokens.nextToken()));
			fs.setDefaultexcludes(true);

			while (tokens.hasMoreTokens())
				fs.createInclude().setName(tokens.nextToken());
			addFileset(fs);
		}
	}
}