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18 package org.apache.batik.transcoder.wmf.tosvg;
19
20 import java.awt.Dimension  ;
21 import java.io.BufferedInputStream ;
22 import java.io.DataInputStream ;
23 import java.io.File ;
24 import java.io.FileOutputStream ;
25 import java.io.IOException ;
26 import java.io.InputStream ;
27 import java.io.OutputStream ;
28 import java.io.OutputStreamWriter ;
29 import java.io.Writer ;
30 import java.net.MalformedURLException ;
31 import java.net.URL ;
32 import java.net.URLConnection ;
33
34 import org.apache.batik.dom.svg.SVGDOMImplementation;
35 import org.apache.batik.svggen.SVGGraphics2D;
36 import org.apache.batik.transcoder.AbstractTranscoder;
37 import org.apache.batik.transcoder.TranscoderException;
38 import org.apache.batik.transcoder.TranscoderInput;
39 import org.apache.batik.transcoder.TranscoderOutput;
40 import org.apache.batik.util.SVGConstants;
41 import org.w3c.dom.DOMImplementation ;
42 import org.w3c.dom.Document ;
43 import org.w3c.dom.Element ;
44 import org.xml.sax.XMLFilter ;
45
46
47
62 public class WMFTranscoder extends AbstractTranscoder
63 implements SVGConstants{
64
65
68 public static final int WMF_TRANSCODER_ERROR_BASE = 0xff00;
69 public static final int ERROR_NULL_INPUT = WMF_TRANSCODER_ERROR_BASE + 0;
70 public static final int ERROR_INCOMPATIBLE_INPUT_TYPE = WMF_TRANSCODER_ERROR_BASE + 1;
71 public static final int ERROR_INCOMPATIBLE_OUTPUT_TYPE = WMF_TRANSCODER_ERROR_BASE + 2;
72
73
76 public WMFTranscoder(){
77 }
78
79
85 public void transcode(TranscoderInput input, TranscoderOutput output)
86 throws TranscoderException {
87 DataInputStream is = getCompatibleInput(input);
91
92 WMFRecordStore currentStore = new WMFRecordStore();
96 try{
97 currentStore.read(is);
98 }catch(IOException e){
99 handler.fatalError(new TranscoderException(e));
100 return;
101 }
102
103 WMFPainter painter = new WMFPainter(currentStore);
107
108 DOMImplementation domImpl
112 = SVGDOMImplementation.getDOMImplementation();
113
114 Document doc = domImpl.createDocument(SVG_NAMESPACE_URI,
115 SVG_SVG_TAG, null);
116
117 SVGGraphics2D svgGenerator = new SVGGraphics2D(doc);
118
119 painter.paint(svgGenerator);
120
121 int vpX = currentStore.getVpX();
125 int vpY = currentStore.getVpY();
126 int vpW = currentStore.getVpW();
127 int vpH = currentStore.getVpH();
128 svgGenerator.setSVGCanvasSize(new Dimension (vpW, vpH));
129
130 Element svgRoot = svgGenerator.getRoot();
131 svgRoot.setAttributeNS(null, SVG_VIEW_BOX_ATTRIBUTE,
132 "" + vpX + " " + vpY + " " +
133 vpW + " " + vpH );
134
135 writeSVGToOutput(svgGenerator, svgRoot, output);
139 }
140
141
145 private void writeSVGToOutput(SVGGraphics2D svgGenerator,
146 Element svgRoot,
147 TranscoderOutput output)
148 throws TranscoderException {
149 XMLFilter xmlFilter = output.getXMLFilter();
151 if(xmlFilter != null){
152 handler.fatalError(new TranscoderException("" + ERROR_INCOMPATIBLE_OUTPUT_TYPE));
153 }
154
155 Document doc = output.getDocument();
157 if(doc != null){
158 handler.fatalError(new TranscoderException("" + ERROR_INCOMPATIBLE_OUTPUT_TYPE));
159 }
160
161 try{
162 OutputStream os = output.getOutputStream();
164 if( os != null ){
165 svgGenerator.stream(svgRoot, new OutputStreamWriter (os));
166 return;
167 }
168
169 Writer wr = output.getWriter();
171 if( wr != null ){
172 svgGenerator.stream(svgRoot, wr);
173 return;
174 }
175
176 String uri = output.getURI();
178 if( uri != null ){
179 try{
180 URL url = new URL (uri);
181 URLConnection urlCnx = url.openConnection();
182 os = urlCnx.getOutputStream();
183 svgGenerator.stream(svgRoot, new OutputStreamWriter (os));
184 return;
185 }catch(MalformedURLException e){
186 handler.fatalError(new TranscoderException(e));
187 }catch(IOException e){
188 handler.fatalError(new TranscoderException(e));
189 }
190 }
191 }catch(IOException e){
192 throw new TranscoderException(e);
193 }
194
195 throw new TranscoderException("" + ERROR_INCOMPATIBLE_OUTPUT_TYPE);
196
197 }
198
199
203 private DataInputStream getCompatibleInput(TranscoderInput input)
204 throws TranscoderException {
205 if(input == null){
207 handler.fatalError(new TranscoderException("" + ERROR_NULL_INPUT));
208 }
209
210 InputStream in = input.getInputStream();
212 if(in != null){
213 return new DataInputStream (new BufferedInputStream (in));
214 }
215
216 String uri = input.getURI();
218 if(uri != null){
219 try{
220 URL url = new URL (uri);
221 in = url.openStream();
222 return new DataInputStream (new BufferedInputStream (in));
223 }catch(MalformedURLException e){
224 handler.fatalError(new TranscoderException(e));
225 }catch(IOException e){
226 handler.fatalError(new TranscoderException(e));
227 }
228 }
229
230 handler.fatalError(new TranscoderException("" + ERROR_INCOMPATIBLE_INPUT_TYPE));
231 return null;
232 }
233
234 public static final String USAGE = "The WMFTranscoder converts a WMF document into an SVG document. \n" +
235 "This simple application generates SVG documents that have the same name, but a where the .wmf extension \n" +
236 "is replaced with .svg. To run the application, type the following at the command line: \n" +
237 "java org.apache.batik.transcoder.wmf.tosvg.WMFTranscoder fileName [fileName]+";
238
239 public static final String WMF_EXTENSION = ".wmf";
240 public static final String SVG_EXTENSION = ".svg";
241
242
245 public static void main(String args[]) throws TranscoderException {
246 if(args.length < 1){
247 System.err.println(USAGE);
248 System.exit(1);
249 }
250
251 WMFTranscoder transcoder = new WMFTranscoder();
252 int nFiles = args.length;
253
254 for(int i=0; i<nFiles; i++){
255 String fileName = args[i];
256 if(!fileName.toLowerCase().endsWith(WMF_EXTENSION)){
257 System.err.println(args[i] + " does not have the " + WMF_EXTENSION + " extension. It is ignored");
258 }
259 else{
260 System.out.print("Processing : " + args[i] + "...");
261 String outputFileName = fileName.substring(0, fileName.toLowerCase().indexOf(WMF_EXTENSION)) + SVG_EXTENSION;
262 File inputFile = new File (fileName);
263 File outputFile = new File (outputFileName);
264 try{
265 TranscoderInput input = new TranscoderInput(inputFile.toURL().toString());
266 TranscoderOutput output = new TranscoderOutput(new FileOutputStream (outputFile));
267 transcoder.transcode(input, output);
268 }catch(MalformedURLException e){
269 throw new TranscoderException(e);
270 }catch(IOException e){
271 throw new TranscoderException(e);
272 }
273 System.out.println(".... Done");
274 }
275 }
276
277 System.exit(0);
278 }
279 }
280 |
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