source: osm/applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java@ 13727

Last change on this file since 13727 was 13611, checked in by pieren, 16 years ago

Fix minor issues.
  • Property svn:eol-style set to native
File size: 16.9 KB
Line 
1package cadastre_fr;
2
3import static org.openstreetmap.josm.tools.I18n.tr;
4
5import java.awt.GridBagLayout;
6import java.io.BufferedReader;
7import java.io.IOException;
8import java.io.InputStreamReader;
9import java.io.OutputStream;
10import java.net.HttpURLConnection;
11import java.net.MalformedURLException;
12import java.net.URL;
13import java.util.Vector;
14
15import javax.swing.JComboBox;
16import javax.swing.JOptionPane;
17import javax.swing.JPanel;
18
19import org.openstreetmap.josm.Main;
20import org.openstreetmap.josm.data.coor.EastNorth;
21import org.openstreetmap.josm.gui.layer.Layer;
22import org.openstreetmap.josm.tools.GBC;
23
24public class CadastreInterface {
25 public boolean downloadCancelled = false;
26 public HttpURLConnection urlConn = null;
27
28 private CadastreGrabber cadastreGrabber;
29 private String cookie;
30 private String interfaceRef = null;
31 private URL searchFormURL;
32 private Vector<String> listOfCommunes = new Vector<String>();
33 private Vector<String> listOfTA = new Vector<String>();
34
35 final String baseURL = "http://www.cadastre.gouv.fr";
36 final String cImageFormat = "Cette commune est au format ";
37 final String cCommuneListStart = "<select name=\"codeCommune\"";
38 final String cCommuneListEnd = "</select>";
39 final String c0ptionListStart = "<option value=\"";
40 final String cOptionListEnd = "</option>";
41 final String cBBoxCommunStart = "new GeoBox(";
42 final String cBBoxCommunEnd = ")";
43
44 final String cInterfaceVector = "afficherCarteCommune.do";
45 final String cInterfaceRaster = "afficherCarteTa.do";
46
47 CadastreInterface(CadastreGrabber cadastreGrabber) {
48 this.cadastreGrabber = cadastreGrabber;
49 }
50
51 public boolean retrieveInterface(WMSLayer wmsLayer) throws DuplicateLayerException {
52 if (wmsLayer.name.equals(""))
53 return false;
54 // open the session with the french Cadastre web front end
55 downloadCancelled = false;
56 try {
57 if (cookie == null || !wmsLayer.name.equals(cadastreGrabber.getLastWMSLayerName())) {
58 getCookie();
59 getInterface(wmsLayer);
60 cadastreGrabber.setLastWMSLayerName(wmsLayer.name);
61 }
62 openInterface();
63 } catch (IOException e) {
64 JOptionPane.showMessageDialog(Main.parent,
65 tr("Town/city {0} not found or not available in WMS.\n" +
66 "Please check its availibility on www.cadastre.gouv.fr", wmsLayer.getLocation()));
67 return false;
68 }
69 return true;
70 }
71
72 private void getCookie() throws IOException {
73 try {
74 // first, get the cookie from Cadastre to allow next downloads
75 searchFormURL = new URL(baseURL + "/scpc/rechercherPlan.do");
76 urlConn = (HttpURLConnection)searchFormURL.openConnection();
77 urlConn.setRequestMethod("GET");
78 urlConn.connect();
79 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
80 throw (IOException) new IOException("Cannot get Cadastre cookie.");
81 }
82 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
83 while(in.readLine() != null) {} // read the buffer otherwise we sent POST too early
84 String headerName=null;
85 for (int i=1; (headerName = urlConn.getHeaderFieldKey(i))!=null; i++) {
86 if (headerName.equals("Set-Cookie")) {
87 cookie = urlConn.getHeaderField(i);
88 cookie = cookie.substring(0, cookie.indexOf(";"));
89 System.out.println("Cookie="+cookie);
90 }
91 }
92 } catch (MalformedURLException e) {
93 throw (IOException) new IOException(
94 "Illegal url.").initCause(e);
95 }
96 }
97
98 public void resetCookie() {
99 cadastreGrabber.setLastWMSLayerName(null);
100 }
101
102 public void resetCookieIfNewLayer(String newWMSLayerName) {
103 if (!newWMSLayerName.equals(cadastreGrabber.getLastWMSLayerName())) {
104 resetCookie();
105 }
106 }
107
108 public void setCookie() {
109 urlConn.setRequestProperty("Cookie", cookie);
110 }
111
112 private void getInterface(WMSLayer wmsLayer) throws IOException, DuplicateLayerException {
113 // first attempt : search for given name without codeCommune
114 interfaceRef = postForm(wmsLayer, "");
115 // second attempt either from known codeCommune (e.g. from cache) or from ComboBox
116 if (interfaceRef == null) {
117 if (!wmsLayer.getCodeCommune().equals("")) {
118 // codeCommune is already known (from previous request or from cache on disk)
119 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
120 } else {
121 if (listOfCommunes.size() > 1) {
122 // commune unknown, prompt the list of communes from
123 // server and try with codeCommune
124 wmsLayer.setCodeCommune(selectCommuneDialog());
125 checkLayerDuplicates(wmsLayer);
126 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
127 }
128 if (wmsLayer.isRaster() && listOfTA.size() > 1) {
129 // commune known but raster format. Select "tableau d'assemblage" from list.
130 wmsLayer.setCodeCommune(selectTADialog());
131 checkLayerDuplicates(wmsLayer);
132 interfaceRef = buildRasterInterfaceRef(wmsLayer.getCodeCommune());
133 }
134 }
135 }
136
137 if (interfaceRef == null)
138 throw new IOException("Town/city " + wmsLayer.getLocation() + " not found.");
139 }
140
141 private void openInterface() throws IOException {
142 try {
143 // finally, open the interface on server side giving access to the wms server
144 URL interfaceURL = new URL(baseURL + "/scpc/"+interfaceRef);
145 urlConn = (HttpURLConnection)interfaceURL.openConnection();
146 urlConn.setRequestMethod("GET");
147 setCookie();
148 urlConn.connect();
149 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
150 throw (IOException) new IOException("Cannot open Cadastre interface. GET response:"+urlConn.getResponseCode());
151 }
152 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
153 while(in.readLine() != null) {} // read the buffer otherwise we sent POST too early
154 System.out.println("GET to open interface sent");
155 } catch (MalformedURLException e) {
156 throw (IOException) new IOException(
157 "CadastreGrabber: Illegal url.").initCause(e);
158 }
159 }
160
161 /**
162 * Post the form with the commune name and check the returned answer which is embedded
163 * in HTTP XML packets. This function doesn't use an XML parser yet but that would be a good idea
164 * for the next releases.
165 * Two possibilities :
166 * - either the commune name matches and we receive an URL starting with "afficherCarteCommune.do" or
167 * - we don't receive a single answer but a list of possible values. This answer looks like:
168 * <select name="codeCommune" class="long erreur" id="codeCommune">
169 * <option value="">Choisir</option>
170 * <option value="50061" >COLMARS - 04370</option>
171 * <option value="QK066" >COLMAR - 68000</option>
172 * </select>
173 *
174 * @param location
175 * @param codeCommune
176 * @return retURL url to available cadastre vectorised master piece; "" if not found
177 * @throws IOException
178 */
179 private String postForm(WMSLayer wmsLayer, String codeCommune) throws IOException {
180 try {
181 String ln = null;
182 String line = null;
183 listOfCommunes.clear();
184 listOfTA.clear();
185 // send a POST request with a city/town/village name
186 String content = "numerovoie=";
187 content += "&indiceRepetition=";
188 content += "&nomvoie=";
189 content += "&lieuDit=";
190 if (codeCommune == "") {
191 content += "&ville=" + new String(java.net.URLEncoder.encode(wmsLayer.getLocation(), "UTF-8"));
192 content += "&codePostal=";
193 } else {
194 content += "&codeCommune=" + codeCommune;
195 }
196 content += "&codeDepartement=";
197 content += "&nbResultatParPage=10";
198 urlConn = (HttpURLConnection)searchFormURL.openConnection();
199 urlConn.setRequestMethod("POST");
200 urlConn.setDoOutput(true);
201 urlConn.setDoInput(true);
202 setCookie();
203 OutputStream wr = urlConn.getOutputStream();
204 wr.write(content.getBytes());
205 wr.flush();
206 wr.close();
207 BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
208 while ((ln = rd.readLine()) != null) {
209 line += ln;
210 }
211 rd.close();
212 urlConn.disconnect();
213 System.out.println("POST="+line);
214 if (line.indexOf(cImageFormat) != -1) {
215 int i = line.indexOf(cImageFormat);
216 int j = line.indexOf(".", i);
217 wmsLayer.setRaster(line.substring(i+cImageFormat.length(), j).equals("image"));
218 }
219 if (!wmsLayer.isRaster() && line.indexOf(cInterfaceVector) != -1) { // "afficherCarteCommune.do"
220 // shall be something like: interfaceRef = "afficherCarteCommune.do?c=X2269";
221 line = line.substring(line.indexOf(cInterfaceVector),line.length());
222 line = line.substring(0, line.indexOf("'"));
223 System.out.println("interface ref.:"+line);
224 return line;
225 } else if (wmsLayer.isRaster() && line.indexOf(cInterfaceRaster) != -1) { // "afficherCarteTa.do"
226 // list of values parsed in listOfTA (Tableau d'assemblage)
227 parseTAList(line.substring(line.indexOf(cInterfaceRaster)));
228 if (listOfTA.size() == 1) {
229 wmsLayer.setCodeCommune(listOfTA.firstElement());
230 return buildRasterInterfaceRef(listOfTA.firstElement());
231 }
232 return null;
233 } else if (line.indexOf(cCommuneListStart) != -1 && line.indexOf(cCommuneListEnd) != -1) {
234 // list of values parsed in listOfCommunes
235 int i = line.indexOf(cCommuneListStart);
236 int j = line.indexOf(cCommuneListEnd, i);
237 parseCommuneList(line.substring(i, j));
238 }
239 } catch (MalformedURLException e) {
240 throw (IOException) new IOException(
241 "Illegal url.").initCause(e);
242 } catch (Exception e){
243 e.printStackTrace();
244 }
245 return null;
246 }
247
248 private void parseCommuneList(String input) {
249 if (input.indexOf(c0ptionListStart) != -1) {
250 while (input.indexOf("<option value=\"") != -1) {
251 int i = input.indexOf(c0ptionListStart);
252 int j = input.indexOf(cOptionListEnd, i+c0ptionListStart.length());
253 int k = input.indexOf("\"", i+c0ptionListStart.length());
254 if (j != -1 && k > (i + c0ptionListStart.length())) {
255 String lov = new String(input.substring(i+c0ptionListStart.length()-1, j));
256 if (lov.indexOf(">") != -1) {
257 System.out.println("parse "+lov);
258 listOfCommunes.add(lov);
259 } else
260 System.err.println("unable to parse commune string:"+lov);
261 }
262 input = input.substring(j+cOptionListEnd.length());
263 }
264 }
265 }
266
267 private void parseTAList(String input) {
268 while (input.indexOf(cInterfaceRaster) != -1) {
269 input = input.substring(input.indexOf(cInterfaceRaster));
270 String codeTA = input.substring(0, input.indexOf("'"));
271 codeTA = codeTA.substring(codeTA.indexOf("=")+1);
272 if (!listOfTA.contains(codeTA)) {
273 System.out.println("parse "+codeTA);
274 listOfTA.add(codeTA);
275 }
276 input = input.substring(cInterfaceRaster.length());
277 }
278 }
279
280 private String selectCommuneDialog() {
281 JPanel p = new JPanel(new GridBagLayout());
282 String[] communeList = new String[listOfCommunes.size() + 1];
283 communeList[0] = tr("Choose from...");
284 for (int i = 0; i < listOfCommunes.size(); i++) {
285 communeList[i + 1] = listOfCommunes.elementAt(i).substring(listOfCommunes.elementAt(i).indexOf(">")+1);
286 }
287 JComboBox inputCommuneList = new JComboBox(communeList);
288 p.add(inputCommuneList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
289 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null) {
290 private static final long serialVersionUID = 1L;
291 };
292 pane.createDialog(Main.parent, tr("Select commune")).setVisible(true);
293 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
294 return null;
295 String result = listOfCommunes.elementAt(inputCommuneList.getSelectedIndex()-1);
296 return result.substring(1, result.indexOf(">")-2);
297 }
298
299 private String selectTADialog() {
300 JPanel p = new JPanel(new GridBagLayout());
301 JComboBox inputTAList = new JComboBox(listOfTA);
302 p.add(inputTAList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
303 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null) {
304 private static final long serialVersionUID = 1L;
305 };
306 pane.createDialog(Main.parent, tr("Select Tableau d'Assemblage")).setVisible(true);
307 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
308 return null;
309 String result = listOfTA.elementAt(inputTAList.getSelectedIndex());
310 return result;
311 }
312
313 private String buildRasterInterfaceRef(String codeCommune) {
314 return cInterfaceRaster + "?f=" + codeCommune;
315 }
316
317 public EastNorthBound retrieveCommuneBBox() throws IOException {
318 if (interfaceRef == null)
319 return null;
320 String ln = null;
321 String line = null;
322 // send GET opening normally the small window with the commune overview
323 String content = baseURL + "/scpc/" + interfaceRef;
324 content += "&dontSaveLastForward&keepVolatileSession=";
325 searchFormURL = new URL(content);
326 System.out.println("HEAD:"+content);
327 urlConn = (HttpURLConnection)searchFormURL.openConnection();
328 urlConn.setRequestMethod("GET");
329 setCookie();
330 urlConn.connect();
331 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
332 throw (IOException) new IOException("Cannot get Cadastre response.");
333 }
334 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
335 while ((ln = in.readLine()) != null) {
336 line += ln;
337 }
338 in.close();
339 urlConn.disconnect();
340 return parseBBoxCommune(line);
341 }
342
343 private EastNorthBound parseBBoxCommune(String input) {
344 if (input.indexOf(cBBoxCommunStart) != -1) {
345 input = input.substring(input.indexOf(cBBoxCommunStart));
346 int i = input.indexOf(",");
347 double minx = Double.parseDouble(input.substring(cBBoxCommunStart.length(), i));
348 int j = input.indexOf(",", i+1);
349 double miny = Double.parseDouble(input.substring(i+1, j));
350 int k = input.indexOf(",", j+1);
351 double maxx = Double.parseDouble(input.substring(j+1, k));
352 int l = input.indexOf(cBBoxCommunEnd, k+1);
353 double maxy = Double.parseDouble(input.substring(k+1, l));
354 return new EastNorthBound(new EastNorth(minx,miny), new EastNorth(maxx,maxy));
355 }
356 return null;
357 }
358
359 private void checkLayerDuplicates(WMSLayer wmsLayer) throws DuplicateLayerException {
360 if (Main.map != null) {
361 for (Layer l : Main.map.mapView.getAllLayers()) {
362 if (l instanceof WMSLayer && l.name.equals(wmsLayer.name) && (l != wmsLayer)) {
363 System.out.println("Try to grab into a new layer when "+wmsLayer.name+" is already opened.");
364 // remove the duplicated layer
365 Main.map.mapView.removeLayer(wmsLayer);
366 throw new DuplicateLayerException();
367 }
368 }
369 }
370 }
371
372 public void cancel() {
373 Main.pleaseWaitDlg.currentAction.setText(tr("Aborting..."));
374 if (urlConn != null) {
375 urlConn.setConnectTimeout(1);
376 urlConn.setReadTimeout(1);
377 //urlConn.disconnect();
378 }
379 downloadCancelled = true;
380 cadastreGrabber.setLastWMSLayerName(null);
381 }
382
383}
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