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Java library to read, modify or create Rational Rose petal files
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/**
 * Copyright (c) 2001 Markus Dahm
 * Copyright (C) 2015-2018 BITPlan GmbH http://www.bitplan.com
 *
 * This source is part of
 * https://github.com/BITPlan/CrazyBeans
 * and the license as outlined there applies
 */
package cb.petal;

import java.util.*;

/**
 * There are two kinds of string encodings in Rose: Either the usual "foo bar",
 * or a multi line string where each line starts with a |.
 *
 * @version $Id: StringLiteral.java,v 1.16 2005/05/09 20:23:11 moroff Exp $
 * @author M. Dahm
 */
public class StringLiteral extends Literal {
	static final long serialVersionUID = -4568943900411619930L;

	private ArrayList values = new ArrayList();
	private boolean multi = false;

	public StringLiteral(String v) {
		super("");

		if (v.equals(""))
			addLine("");
		else {
			StringTokenizer tok = new StringTokenizer(v, "\r\n");

			multi = tok.countTokens() > 1;
			while (tok.hasMoreTokens())
				addLine(tok.nextToken());
		}
	}

	public StringLiteral(Collection c) {
		super("");
		values = new ArrayList(c);
		multi = true; // Initialized as multi line string
	}

	public void addLine(String v) {
		values.add(v);
	}

	public void removeLine(String v) {
		values.remove(v);
	}

	public Collection getLines() {
		return values;
	}

	/**
	 * @return first line, if available
	 */
	public String getValue() {
		if (values.size() == 1) {
			return (String) values.get(0);
		} else if (values.size() > 1) {
			StringBuffer buffer = new StringBuffer(1024);

			for (Iterator iter = values.iterator(); iter.hasNext();) {
				buffer.append(iter.next());
				if (iter.hasNext())
					buffer.append("\n");
			}
			return buffer.toString();
		} else
			return null;
	}

	public java.lang.Object getLiteralValue() {
		StringBuffer buf = new StringBuffer();

		for (Iterator i = values.iterator(); i.hasNext();) {
			buf.append(i.next());
			if (i.hasNext())
				buf.append("\\n");
		}

		return buf.toString();
	}

	public void setMulti(boolean m) {
		multi = m;
	}

	public boolean getMulti() {
		return multi;
	}

	public boolean isMultiLine() {
		return (values.size() > 1) || multi;
	}

	public String toString() {
		if (isMultiLine()) {
			StringBuffer buf = new StringBuffer(cb.util.Constants.getNewLine());

			for (Iterator i = values.iterator(); i.hasNext();)
				buf.append("|" + i.next() + cb.util.Constants.getNewLine());

			return buf.toString();
		} else
			return '"' + getValue() + '"';
	}

	public void accept(Visitor v) {
		v.visit(this);
	}

	public boolean equals(java.lang.Object o) {
		return (o instanceof StringLiteral)
				&& (((StringLiteral) o).values.equals(this.values));
	}
}