src/cl.uchile.dcc.bnac/MemlParser.java

   1 /*
   2  *  bnac : virtual museum environment creation/manipulation project
   3  *  Copyright (C) 2010 Felipe Cañas Sabat
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 package cl.uchile.dcc.bnac;
  20
  21 import java.io.IOException;
  22
  23 import java.util.LinkedList;
  24
  25 import javax.vecmath.Point2f;
  26
  27 import org.xml.sax.SAXException;
  28 import org.xml.sax.Attributes;
  29 import org.xml.sax.ext.DefaultHandler2;
  30
  31 public class MemlParser extends DefaultHandler2
  32 {
  33     public MuseumEnvironment me;
  34
  35     protected CObject obj;
  36     protected Capture cap;
  37     protected Hall hall;
  38     protected LinkedList<Point2f> corners;
  39     protected Route route;
  40     protected boolean inStrings;
  41     protected String strId;
  42     protected String strLang;
  43
  44     protected String txt;
  45
  46     public MemlParser (MuseumEnvironment me)
  47     {
  48         this.me = me;
  49         obj = null;
  50         cap = null;
  51         hall = null;
  52         corners = null;
  53         route = null;
  54         inStrings = false;
  55         strId = null;
  56         strLang = null;
  57
  58         txt = null;
  59     }
  60
  61     public void startElement (String uri, String lName, String qName,
  62             Attributes attrs) throws SAXException
  63     {
  64         if (attrs.getLength() > 0) {
  65             BnacLog.trace("MemlParser.startElement %s >>", qName);
  66             for (int i=0; i<attrs.getLength(); ++i) {
  67                 BnacLog.trace("%s=%s",
  68                         attrs.getQName(i), attrs.getValue(i));
  69             }
  70             BnacLog.trace("<<");
  71         } else {
  72             BnacLog.trace("MemlParser.startElement %s %s %s >><<",
  73                     uri, lName, qName);
  74         }
  75         if (qName.equals("painting")) {
  76             obj = new CObject(attrs.getValue("id"));
  77         } else if (qName.equals("capture2D")) {
  78             cap = new Capture2D(attrs.getValue("id"),
  79                     me.getObject(attrs.getValue("ref")));
  80         } else if (qName.equals("hall")) {
  81             hall = new Hall(attrs.getValue("id"),
  82                     Float.parseFloat(attrs.getValue("height")),
  83                     new Point2f[0]);
  84             if (attrs.getValue("name") != null) {
  85                 hall.setName(attrs.getValue("name"));
  86             }
  87             corners = new LinkedList<Point2f>();
  88         } else if (qName.equals("link")) {
  89             me.addLink(new Link(
  90                     attrs.getValue("id"),
  91                     attrs.getValue("door1"), attrs.getValue("door2")));
  92         } else if (qName.equals("route")) {
  93             route = new Route(attrs.getValue("id"));
  94         } else if (qName.equals("strings")) {
  95             inStrings = true;
  96         } else if (qName.equals("elem")) {
  97             strId = attrs.getValue("id");
  98         } else if (qName.equals("entry")) {
  99             strLang = attrs.getValue("lang");
 100         } else if (qName.equals("pair") && inStrings) {
 101             me.addString(strId, strLang, attrs.getValue("name"),
 102                     attrs.getValue("value"));
 103         } else {
 104             if (obj != null) {
 105             } else if (cap != null) {
 106                 if (qName.equals("resource")) {
 107                     cap.set("Type", attrs.getValue("type"));
 108                 }
 109             } else if (hall != null) {
 110                 if (qName.equals("corner")) {
 111                     corners.add(new Point2f(
 112                                 Float.parseFloat(attrs.getValue("x")),
 113                                 Float.parseFloat(attrs.getValue("y"))));
 114                 } else if (qName.equals("placedCapture")) {
 115                     if (corners != null) {
 116                         hall.setCorners(corners.toArray(new Point2f[0]));
 117                         corners = null;
 118                     }
 119
 120                     PlacedCapture pc = new PlacedCapture(
 121                             attrs.getValue("id"),
 122                             me.getCapture(attrs.getValue("ref")),
 123                             new Point2f(
 124                                 Float.parseFloat(attrs.getValue("x")),
 125                                 Float.parseFloat(attrs.getValue("y"))),
 126                             0.0f, 1.0f);
 127                     if (attrs.getValue("angle") != null) {
 128                         pc.angle = (float) -Math.toRadians(
 129                                 Float.parseFloat(attrs.getValue("angle")));
 130                     }
 131                     if (attrs.getValue("scale") != null) {
 132                         pc.scale = Float.parseFloat(attrs.getValue("scale"));
 133                     }
 134                     hall.getWall(Integer.parseInt(attrs.getValue("wall"))).
 135                         addPlacedCapture(pc);
 136                 } else if (qName.equals("door")) {
 137                     if (corners != null) {
 138                         hall.setCorners(corners.toArray(new Point2f[0]));
 139                         corners = null;
 140                     }
 141
 142                     String id = attrs.getValue("id");
 143                     Wall wall = hall.getWall(
 144                             Integer.parseInt(attrs.getValue("wall")));
 145                     Door d = new Door(id);
 146                     Point2f dims = d.getDimensions();
 147                     Point2f pos = d.pos;
 148                     if (attrs.getValue("w") != null) {
 149                         dims.x = Float.parseFloat(attrs.getValue("w"));
 150                     }
 151                     if (attrs.getValue("h") != null) {
 152                         dims.y = Float.parseFloat(attrs.getValue("h"));
 153                     }
 154                     if (attrs.getValue("x") != null) {
 155                         pos.x = Float.parseFloat(attrs.getValue("x"));
 156                     }
 157                     if (attrs.getValue("y") != null) {
 158                         pos.y = Float.parseFloat(attrs.getValue("y"));
 159                     }
 160                     if (attrs.getValue("angle") != null) {
 161                         d.setAngle((float) -Math.toRadians(
 162                                 Float.parseFloat(attrs.getValue("angle"))));
 163                     }
 164                     if (attrs.getValue("scale") != null) {
 165                         d.setScale(Float.parseFloat(attrs.getValue("scale")));
 166                     }
 167                     d.setDimensions(dims.x, dims.y);
 168                     d.setPosition(pos.x, pos.y);
 169                     wall.addDoor(d);
 170                 } else if (qName.equals("startingPoint")) {
 171                     if (corners != null) {
 172                         hall.setCorners(corners.toArray(new Point2f[0]));
 173                         corners = null;
 174                     }
 175
 176                     hall.addStartingPoint(
 177                             attrs.getValue("id"),
 178                             new Point2f(
 179                                 Float.parseFloat(attrs.getValue("x")),
 180                                 Float.parseFloat(attrs.getValue("y"))),
 181                             Float.parseFloat(attrs.getValue("angle")));
 182                 }
 183             }
 184         }
 185     }
 186
 187     public void endElement (String uri, String lName, String qName)
 188         throws SAXException
 189     {
 190         if (qName.equals("painting")) {
 191             me.addObject(obj);
 192             obj = null;
 193         } else if (qName.equals("capture2D")) {
 194             me.addCapture(cap);
 195             cap = null;
 196         } else if (qName.equals("hall")) {
 197             me.addHall(hall);
 198             hall = null;
 199         } else if (qName.equals("route")) {
 200             me.addRoute(route);
 201             route = null;
 202         } else if (qName.equals("strings")) {
 203             inStrings = false;
 204         } else if (txt != null) {
 205             String key = Util.capitalize(qName);
 206             if (obj != null) {
 207                 obj.set(key, txt);
 208             } else if (cap != null) {
 209                 cap.set(key, txt);
 210             } else if (hall != null) {
 211                 hall.set(key, txt);
 212             } else if (qName.equals("title")) {
 213                 me.set("Title", txt);
 214             } else if (route != null && qName.equals("capture")) {
 215                 route.addCapture(txt);
 216             }
 217         }
 218         txt = null;
 219     }
 220
 221     public void characters (char[] ch, int idx, int len)
 222         throws SAXException
 223     {
 224         txt = new String(ch, idx, len);
 225     }
 226 }