jsonmapwriter.java

tiled地图编辑器是2d的,很不错的国外软件,使用起来很方便的

/*
 *  Tiled Map Editor, (c) 2004-2006
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  JSON map writer contributed by
 *  Nader Akhres <[e-mail]>
 */

package tiled.plugins.json;

import java.io.*;

import org.json.XML;

import tiled.core.Map;
import tiled.core.TileSet;
import tiled.io.MapReader;
import tiled.io.MapWriter;
import tiled.io.xml.XMLMapWriter;

/**
 * @version $Id: JSONMapWriter.java 683 2006-06-25 14:17:37Z bjorn $
 */
public class JSONMapWriter extends  XMLMapWriter implements MapWriter
{
	public JSONMapWriter() {
		// TODO Auto-generated constructor stub
	}


	/**
	 * this method write a map OR a tileset in json format
	 *
	 * @param map
	 * @param set
	 * @param filename
	 * @throws Exception
	 */
	private void writeMapOrTileset(Map map ,TileSet set, String filename) throws Exception {

		//		create a temporary file
		File tempFile = File.createTempFile("tiled_json_",".tmx");

		//		write in this temp file an xml content (tmx format)
		if (map != null) {
			super.writeMap(map,tempFile.getAbsolutePath());
		} else {
			if (set != null) {
				super.writeTileset(set,tempFile.getAbsolutePath()); //write in this temp file an xml content (tmx format)
			} else
				return;
		}

		tempFile = new File(tempFile.getAbsolutePath()); //TODO useful?

		//		now read this temp file and get the tmx content
		int fileSize = 100000; //TODO Replace here by true file size //(int) tempFile.length(); //100000;
		char[] TMXContent = new char[fileSize];

		FileReader fileR = new FileReader(tempFile.getAbsolutePath());
		fileR.read(TMXContent);
		fileR.close();

		// 		avoid retrieving xml header like <?xml version=\"1.0\"?>, JSON parser doesn't like it!
		String TMXContentString = new String(TMXContent).trim().replaceFirst("\\<\\?.*\\?\\>","");

		System.out.println("temp file path="+tempFile.getAbsolutePath());
		System.out.println("filesize="+fileSize);
		System.out.println("content="+TMXContentString);

		//		delete useless temp file
		tempFile.delete();

		// 		turn it into JSON format string
		String JSONContent = XML.toJSONObject(TMXContentString).toString(2);

		System.err.println("json content="+JSONContent);

		//		write in destination file
		FileWriter fileW = new FileWriter(filename);
		fileW.write(JSONContent);
		fileW.flush();
		fileW.close();

	}


	public void writeMap(Map map, String filename) throws Exception {
		writeMapOrTileset(map,null,filename);
	}

	public void writeTileset(TileSet set, String filename) throws Exception {
		writeMapOrTileset(null,set,filename);
	}

	public void writeMap(Map map, OutputStream out) throws Exception {
		super.writeMap(map,out); //not implemented because can't turn into JSON an OutputStream
	}

	public void writeTileset(TileSet set, OutputStream out) throws Exception {
		super.writeTileset(set,out); //not implemented because can't turn into JSON an OutputStream
	}

    /**
     * @see MapReader#getFilter()
     */
    public String getFilter() throws Exception {
        return "*.js,*.js.gz";
    }

    public String getPluginPackage() {
        return "Tiled JSON writer";
    }

    public String getDescription() {
        return
            "The Tiled JSON format (TMX converted) writer\n" +
            "\n" +
            "Nader AKHRES"+
            "\n for \n"+
            "Tiled Map Editor, (c) 2005\n" +
            "Adam Turk\n" +
            "Bjorn Lindeijer";
    }

    public String getName() {
        return "Tiled JSON (TMX converted) map writer";
    }

    public boolean accept(File pathname) {
        try {
            String path = pathname.getCanonicalPath();
            if (path.endsWith(".js") || path.endsWith(".js.gz")) {
                return true;
            }
        } catch (IOException e) {}
        return false;
    }
}