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GATE - general achitecture for text engineering - is open source software capable of solving almost any text processing problem. This artifact enables you to embed the core GATE Embedded with its essential dependencies. You will able to use the GATE Embedded API and load and store GATE XML documents. This artifact is the perfect dependency for CREOLE plugins or for applications that need to customize the GATE dependencies due to confict with their own dependencies or for lower footprint.

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/*
 *  ConfigDataProcessor.java
 *
 *  Copyright (c) 1995-2012, The University of Sheffield. See the file
 *  COPYRIGHT.txt in the software or at http://gate.ac.uk/gate/COPYRIGHT.txt
 *
 *  This file is part of GATE (see http://gate.ac.uk/), and is free
 *  software, licenced under the GNU Library General Public License,
 *  Version 2, June 1991 (in the distribution as file licence.html,
 *  and also available at http://gate.ac.uk/gate/licence.html).
 *
 *  Hamish Cunningham, 9/Nov/2000
 *
 *  $Id: ConfigDataProcessor.java 19663 2016-10-10 08:44:57Z markagreenwood $
 */

package gate.config;

import java.io.*;
import java.net.URL;

import javax.xml.parsers.*;

import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import gate.util.*;


/** This class parses gate.xml configuration data files.
  */
public class ConfigDataProcessor
{
  /** Debug flag */
  protected static final boolean DEBUG = false;

  /** The parser for the CREOLE directory files */
  protected SAXParser parser = null;

  /** Default constructor. Sets up config files parser. */
  public ConfigDataProcessor() throws GateException {

    // construct a SAX parser for parsing the config files
    try {
      // Get a parser factory.
      SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();

      // Set up the factory to create the appropriate type of parser:
      // non validating one
      saxParserFactory.setValidating(false);
      // non namespace aware one
      saxParserFactory.setNamespaceAware(true);

      // create the parser
      parser = saxParserFactory.newSAXParser();

    } catch (SAXException e) {
      if(DEBUG) Out.println(e);
      throw(new GateException(e));
    } catch (ParserConfigurationException e) {
      if(DEBUG) Out.println(e);
      throw(new GateException(e));
    }

  } // default constructor

  /** Parse a config file (represented as an open stream).
    */
  public void parseConfigFile(InputStream configStream, URL configUrl)
  throws GateException
  {
    String nl = Strings.getNl();

    // create a handler for the config file and parse it
    String configString = null; // for debug messages
    try {
      if(DEBUG) {
        File configFile = Files.fileFromURL(configUrl);
        if(configFile.exists())
          configString = Files.getString(configUrl.getFile());
        else
          configString = configUrl.toString();
      }
      DefaultHandler handler = new ConfigXmlHandler(configUrl);
      parser.parse(configStream, handler);
      if(DEBUG) {
        Out.prln(
          "done parsing " +
          ((configUrl == null) ? "null" : configUrl.toString())
        );
      }
    } catch (IOException e) {
      if(DEBUG) Out.prln("conf file:"+nl+configString+nl);
      throw(new GateException("Config data error 1 on "+configUrl+": "+nl+e));
    } catch (SAXException e) {
      if(DEBUG) Out.prln("conf file:"+nl+configString+nl);
      throw(new GateException("Config data error 2 on "+configUrl+": "+nl+e));
    }

  } // parseConfigFile

} // class ConfigDataProcessor