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   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  // XCatalogReader.java - Read XML Catalog files
  
  /*
   * Copyright 2001-2004 The Apache Software Foundation or its licensors,
   * as applicable.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package jaxp.sun.org.apache.xml.internal.resolver.readers;
  
  import java.util.Vector;
  import jaxp.sun.org.apache.xml.internal.resolver.Catalog;
  import jaxp.sun.org.apache.xml.internal.resolver.CatalogEntry;
  import jaxp.sun.org.apache.xml.internal.resolver.CatalogException;
  import jaxp.sun.org.apache.xml.internal.resolver.helpers.PublicId;
  
  import org.xml.sax.*;
  
  import javax.xml.parsers.*;
  
  import jaxp.xml.parsers.SAXParserFactory;
  
  /**
   * Parse "xcatalog" XML Catalog files, this is the XML Catalog format
   * developed by John Cowan and supported by Apache.
   *
   * @see Catalog
   *
   * @author Norman Walsh
   * <a href="mailto:Norman.Walsh@Sun.COM">Norman.Walsh@Sun.COM</a>
   *
   */
  public class XCatalogReader extends SAXCatalogReader implements SAXCatalogParser {
    /** The catalog object needs to be stored by the object so that
     * SAX callbacks can use it.
     */
    protected Catalog catalog = null;
  
    /** Set the current catalog. */
    public void setCatalog (Catalog catalog) {
      this.catalog = catalog;
    }
  
    /** Get the current catalog. */
    public Catalog getCatalog () {
      return catalog;
    }
  
    /** The constructor */
    public XCatalogReader(SAXParserFactory parserFactory) {
      super(parserFactory);
    }
  
    // ----------------------------------------------------------------------
    // Implement the SAX DocumentHandler interface
  
    /** The SAX <code>setDocumentLocator</code> method does nothing. */
    public void setDocumentLocator (Locator locator) {
      return;
    }
  
    /** The SAX <code>startDocument</code> method does nothing. */
    public void startDocument ()
      throws SAXException {
      return;
    }
  
    /** The SAX <code>endDocument</code> method does nothing. */
    public void endDocument ()
      throws SAXException {
      return;
    }
  
    /**
     * The SAX <code>startElement</code> method recognizes elements
     * from the plain catalog format and instantiates CatalogEntry
     * objects for them.
     *
     * @param namespaceURI The namespace name of the element.
     * @param localName The local name of the element.
     * @param qName The QName of the element.
     * @param atts The list of attributes on the element.
     *
     * @see CatalogEntry
     */
    public void startElement (String namespaceURI,
                              String localName,
                              String qName,
                              Attributes atts)
      throws SAXException {
  
      int entryType = -1;
      Vector entryArgs = new Vector();
  
      if (localName.equals("Base")) {
        entryType = catalog.BASE;
        entryArgs.add(atts.getValue("HRef"));
  
        catalog.getCatalogManager().debug.message(4, "Base", atts.getValue("HRef"));
      } else if (localName.equals("Delegate")) {
        entryType = catalog.DELEGATE_PUBLIC;
        entryArgs.add(atts.getValue("PublicId"));
        entryArgs.add(atts.getValue("HRef"));
  
        catalog.getCatalogManager().debug.message(4, "Delegate",
                      PublicId.normalize(atts.getValue("PublicId")),
                      atts.getValue("HRef"));
      } else if (localName.equals("Extend")) {
        entryType = catalog.CATALOG;
        entryArgs.add(atts.getValue("HRef"));
  
        catalog.getCatalogManager().debug.message(4, "Extend", atts.getValue("HRef"));
      } else if (localName.equals("Map")) {
        entryType = catalog.PUBLIC;
        entryArgs.add(atts.getValue("PublicId"));
        entryArgs.add(atts.getValue("HRef"));
  
        catalog.getCatalogManager().debug.message(4, "Map",
                      PublicId.normalize(atts.getValue("PublicId")),
                      atts.getValue("HRef"));
      } else if (localName.equals("Remap")) {
        entryType = catalog.SYSTEM;
        entryArgs.add(atts.getValue("SystemId"));
        entryArgs.add(atts.getValue("HRef"));
  
        catalog.getCatalogManager().debug.message(4, "Remap",
                      atts.getValue("SystemId"),
                      atts.getValue("HRef"));
      } else if (localName.equals("XMLCatalog")) {
        // nop, start of catalog
      } else {
        // This is equivalent to an invalid catalog entry type
        catalog.getCatalogManager().debug.message(1, "Invalid catalog entry type", localName);
      }
  
      if (entryType >= 0) {
        try {
          CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
          catalog.addEntry(ce);
        } catch (CatalogException cex) {
          if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
            catalog.getCatalogManager().debug.message(1, "Invalid catalog entry type", localName);
          } else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
            catalog.getCatalogManager().debug.message(1, "Invalid catalog entry", localName);
          }
        }
      }
      }
  
      /** The SAX <code>endElement</code> method does nothing. */
      public void endElement (String namespaceURI,
                              String localName,
                              String qName)
        throws SAXException {
        return;
      }
  
    /** The SAX <code>characters</code> method does nothing. */
    public void characters (char ch[], int start, int length)
      throws SAXException {
      return;
    }
  
    /** The SAX <code>ignorableWhitespace</code> method does nothing. */
    public void ignorableWhitespace (char ch[], int start, int length)
      throws SAXException {
      return;
    }
  
    /** The SAX <code>processingInstruction</code> method does nothing. */
    public void processingInstruction (String target, String data)
      throws SAXException {
      return;
    }
  }
  