package de.mpg.mpiwg.berlin.mpdl.lt.morph.app;

import java.util.ArrayList;

import org.xml.sax.*;


public class SimpleMorphContentHandler implements ContentHandler {
  private Element currentElement;
  private Lemma lemma;
  private Form form;
  private ArrayList<Lemma> lemmas;
  private ArrayList<Form> forms;
  
  public SimpleMorphContentHandler() {
  }
  
  public Form getForm() {
    return form;
  }
  
  public Lemma getLemma() {
    return lemma;
  }
  
  public ArrayList<Form> getForms() {
    return forms;
  }
  
  public ArrayList<Lemma> getLemmas() {
    return lemmas;
  }

  public void startDocument() throws SAXException {
  }

  public void endDocument() throws SAXException {
  }
  
  public void characters(char[] c, int start, int length) throws SAXException {
    if (currentElement != null) {
      String elemName = currentElement.name;
      if (form != null) {
        char[] cCopy = new char[length];
        System.arraycopy(c, start, cCopy, 0, length);
        String charactersStr = String.valueOf(cCopy);
        if (elemName.equals("provider"))
          form.setProvider(charactersStr);
        else if (elemName.equals("language"))
          form.setLanguage(charactersStr);
        else if (elemName.equals("form-name"))
          form.setFormName(charactersStr);
        else if (elemName.equals("lemma-name"))
          form.setLemmaName(charactersStr);
        else if (elemName.equals("pos"))
          form.setPos(charactersStr);
        else if (elemName.equals("tense"))
          form.setTense(charactersStr);
        else if (elemName.equals("voice"))
          form.setVoice(charactersStr);
        else if (elemName.equals("casus"))
          form.setCasus(charactersStr);
        else if (elemName.equals("number"))
          form.setNumber(charactersStr);
        else if (elemName.equals("mood"))
          form.setMood(charactersStr);
        else if (elemName.equals("person"))
          form.setPerson(charactersStr);
        else if (elemName.equals("gender"))
          form.setGender(charactersStr);
        else if (elemName.equals("definite"))
          form.setDefinite(charactersStr);
      } else if (lemma != null) {
        char[] cCopy = new char[length];
        System.arraycopy(c, start, cCopy, 0, length);
        String charactersStr = String.valueOf(cCopy);
        if (elemName.equals("provider"))
          lemma.setProvider(charactersStr);
        else if (elemName.equals("language"))
          lemma.setLanguage(charactersStr);
        else if (elemName.equals("lemma-name"))
          lemma.setLemmaName(charactersStr);
      }
    }
  }

  public void ignorableWhitespace(char[] c, int start, int length) throws SAXException {
  }

  public void processingInstruction(String target, String data) throws SAXException {
  }

  public void setDocumentLocator(org.xml.sax.Locator arg1) {
  }

  public void endPrefixMapping(String prefix) throws SAXException {
  }

  public void skippedEntity(String name) throws SAXException {
  }

  public void endElement(String uri, String localName, String name) throws SAXException {
    currentElement = null;
  }

  public void startElement(String uri, String localName, String name, Attributes attrs) throws SAXException {
    currentElement = new Element(name);
    if (name.equals("form")) {
      form = new Form();
      if (forms == null)
        forms = new ArrayList<Form>();
      forms.add(form);
    } else if (name.equals("lemma")) {
      lemma = new Lemma();
      if (lemmas == null)
        lemmas = new ArrayList<Lemma>();
      lemmas.add(lemma);
    }
  }

  public void startPrefixMapping(String prefix, String uri) throws SAXException {
  }
  
  private class Element {
    String name;
    String value;
    
    Element(String name) {
      this.name = name;
    }

    Element(String name, String value) {
      this.name = name;
      this.value = value;
    }
  }
}