VCardParser.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package  org.turro.vcard.db;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.elephant.context.ElephantContext;
import org.turro.vcard.VCard;
import org.turro.vcard.properties.Version;
 
public class VCardParser {
 
  private BufferedReader in;
  private boolean endReached = false;
 
  public VCardParser(BufferedReader in) {
    this.in = in;
    try {
      in.readLine();
    } catch (IOException ex) {
      Logger.getLogger(VCardParser.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
  }
 
  public List<VCard> getVCards() {
    List<VCard> l = new ArrayList<VCard>();
    while(!endReached) {
      processLines(l, readNextVCard());
    }
    return l;
  }
 
  private void processLines(List<VCard> l, List<String> lines) {
    Version version = Version.getInstance(lines);
    VCard vc = new VCard(version);
    vc.readLines(lines);
    l.add(vc);
  }
 
  private List<String> readNextVCard() {
    Vector<String> v = new Vector<String>();
    try {
      boolean nextAppend = false;
      v.add("BEGIN:VCARD");
      while(!endReached) {
        String s = in.readLine();
        endReached = s == null;
        if(!endReached) {
          if(s.equalsIgnoreCase("BEGIN:VCARD")) {
            break;
          } else {
            if(!v.isEmpty() && (nextAppend || s.startsWith(" "))) {
              String tmp = v.lastElement();
              v.add(v.size() - 1, tmp + " " + s.trim());
              nextAppend = false;
            } else {
              if(s.endsWith("\\n")) {
                nextAppend = true;
                s = s.substring(0, s.length() - 1);
              }
              v.add(s);
            }
          }
        }
      }
    } catch (IOException ex) {
      Logger.getLogger(VCardParser.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
    return v;
  }
}