DXFImportFilter.java

/*******************************************************************************
 * Copyright 2010 Simon Mieth
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
/*
 Copyright 2005 Simon Mieth

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
package org.kabeja.inkscape;

import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Map;

import org.kabeja.DraftDocument;

import org.kabeja.dxf.parser.DXFParserBuilder;
import org.kabeja.inkscape.xml.SAXInkscapeLayerFilter;
import org.kabeja.parser.Parser;
import org.kabeja.processing.LayerFilter;
import org.kabeja.processing.PolylineConverter;
import org.kabeja.processing.PostProcessor;
import org.kabeja.svg.RootLayerFilter;
import org.kabeja.svg.SVGGenerator;
import org.kabeja.svg.StyleAttributeFilter;
import org.kabeja.xml.SAXFilter;
import org.kabeja.xml.SAXGenerator;
import org.kabeja.xml.SAXPrettyOutputter;
import org.kabeja.xml.SAXSerializer;

/**
 * This is a CLI wrapper for kabeja to imitate the behavior of the native
 * Inscape dxf2svg import filter
 */
public class DXFImportFilter {

	public final static String PARAM_POLYLINE_CONNECT = "polyline.connect";

	protected boolean connectPolylines = true;

	public void importFile(String[] args) {
		try {
			Map properties = null;
			String file = "";
			if (args.length > 1) {
				properties = parseParameters(args);
				file = args[args.length - 1];
			} else {
				properties = new HashMap();
				file = args[0];

			}
			// parse the dxf file
			Parser parser = DXFParserBuilder.createDefaultParser();

			DraftDocument doc = parser.parse(new FileInputStream(file),new HashMap<String,Object> ());


			

			Map noprops = new HashMap();

			// connect all entities, where possible
			if (properties.containsKey(PARAM_POLYLINE_CONNECT)
					&& Boolean.getBoolean((String) properties
							.get(PARAM_POLYLINE_CONNECT))) {
				PostProcessor pp = new PolylineConverter();
				pp.setProperties(noprops);
				pp.process(doc, noprops);
			}

			PostProcessor pp = new LayerFilter();
			pp.setProperties(properties);
			pp.process(doc, noprops);

			
			// the processing and svg conversion
			SAXGenerator generator = new SVGGenerator();
			generator.setProperties(properties);

			// remove the root group
			SAXFilter filter1 = new RootLayerFilter();
			filter1.setProperties(properties);

			// fix problems width percent width values
			SAXFilter filter2 = new StyleAttributeFilter();
			filter2.setProperties(properties);

			// add inkscape layer attributes
			SAXFilter filter3 = new SAXInkscapeLayerFilter();

			// output goes to stdout
			SAXSerializer serializer = new SAXPrettyOutputter();
			serializer.setOutput(System.out);
			serializer.setProperties(properties);

			// chain the filters
			filter1.setContentHandler(filter2);
			filter2.setContentHandler(filter3);
			filter3.setContentHandler(serializer);

			// setup the process pipeline
			// and start the generation

			generator.generate(doc, filter1, new HashMap());

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {

		if (args.length >= 1) {
			DXFImportFilter filter = new DXFImportFilter();
			filter.importFile(args);
		}
	}

	protected Map parseParameters(String[] args) {

		Map map = new HashMap();
		for (int i = 0; i < args.length; i++) {

			if (args[i].startsWith("--")) {
				int pos = args[i].indexOf('=');
				String param = args[i].substring(2, pos);
				String value = args[i].substring(pos + 1);
				map.put(param, value);

			}

		}

		return map;

	}

}