PDFDictionary.java

package org.freehep.graphicsio.pdf;

import java.io.IOException;
import java.util.Date;

/**
 * Implements a PDF Dictionary. All PDFObjects (including java Strings and
 * arrays) can be entered into the dictionary.
 * <p>
 * 
 * @author Mark Donszelmann
 * @version $Id: PDFDictionary.java,v 1.7 2009-08-17 21:44:44 murkle Exp $
 */
public class PDFDictionary implements PDFConstants {

	private String open = null;

	protected PDFByteWriter out;

	private boolean ok;

	private PDFObject object;

	protected PDF pdf;

	PDFDictionary(PDF pdf, PDFByteWriter writer) throws IOException {
		this(pdf, writer, null);
	}

	PDFDictionary(PDF pdf, PDFByteWriter writer, PDFObject parent)
			throws IOException {
		this.pdf = pdf;
		object = parent;
		out = writer;
		out.println("<< ");
		out.indent();
		ok = true;
	}

	void close() throws IOException {
		if (open != null) {
			System.err
					.println("PDFWriter error: '" + open + "' was not closed");
		}
		out.outdent();
		out.println(">>");
		if (object != null) {
			object.close();
		}
		ok = false;
	}

	public void entry(String key, String string) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " (" + PDFUtil.escape(string) + ")");
	}

	public void entry(String key, PDFName name) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + name);
	}

	public void entry(String key, int number) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + number);
	}

	public void entry(String key, double number) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + PDFUtil.fixedPrecision(number));
	}

	public void entry(String key, boolean bool) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + (bool ? "true" : "false"));
	}

	public void entry(String key, PDFRef ref) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + ref);
	}

	public void entry(String key, Date date) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.println("/" + key + " " + PDFUtil.date(date));
	}

	public void entry(String key, Object[] objs) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.print("/" + key + " [");
		for (int i = 0; i < objs.length; i++) {
			if (i != 0) {
				out.printPlain(" ");
			}
			out.printPlain(objs[i]);
		}
		out.printPlain("]");
		out.println();
	}

	public void entry(String key, int[] numbers) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.print("/" + key + " [");
		for (int i = 0; i < numbers.length; i++) {
			if (i != 0) {
				out.printPlain(" ");
			}
			out.printPlain(numbers[i]);
		}
		out.printPlain("]");
		out.println();
	}

	public void entry(String key, double[] numbers) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.print("/" + key + " [");
		for (int i = 0; i < numbers.length; i++) {
			if (i != 0) {
				out.printPlain(" ");
			}
			out.printPlain(PDFUtil.fixedPrecision(numbers[i]));
		}
		out.printPlain("]");
		out.println();
	}

	public void entry(String key, boolean[] bool) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		out.print("/" + key + " [");
		for (int i = 0; i < bool.length; i++) {
			if (i != 0) {
				out.printPlain(" ");
			}
			out.printPlain(bool[i] ? "true" : "false");
		}
		out.printPlain("]");
		out.println();
	}

	public PDFDictionary openDictionary(String name) throws IOException {
		if (!ok) {
			System.err.println("PDFWriter error: 'PDFDictionary' was closed");
		}
		if (open != null) {
			System.err
					.println("PDFWriter error: '" + open + "' was not closed");
		}
		open = "PDFDictionary: " + name;
		out.println("/" + name);
		PDFDictionary dictionary = new PDFDictionary(pdf, out);
		return dictionary;
	}

	public void close(PDFDictionary dictionary) throws IOException {
		dictionary.close();
		open = null;
	}

}