/*
    Copyright (C) 2013-2022 Nicola L.C. Talbot
    www.dickimaw-books.com

    This program 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.

    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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
package com.dickimawbooks.texparserlib.latex.datatool;

import java.io.IOException;

import com.dickimawbooks.texparserlib.*;
import com.dickimawbooks.texparserlib.latex.*;

public class DTLloaddbtex extends ControlSequence
{
   public DTLloaddbtex()
   {
      this("DTLloaddbtex");
   }

   public DTLloaddbtex(String name)
   {
      super(name);
   }

   @Override
   public Object clone()
   {
      return new DTLloaddbtex(getName());
   }

   @Override
   public void process(TeXParser parser, TeXObjectList stack)
     throws IOException
   {
      TeXObject csArg = popArg(parser, stack);

      String filename = popLabelString(parser, stack);

      if (csArg instanceof TeXObjectList)
      {
         TeXObjectList list = (TeXObjectList)csArg;
         csArg = list.popToken(TeXObjectList.POP_SHORT);
      }

      TeXParserListener listener = parser.getListener();

      TeXPath texPath = new TeXPath(parser, filename);

      if (!(csArg instanceof ControlSequence))
      {
         throw new TeXSyntaxException(parser, 
           TeXSyntaxException.ERROR_CS_EXPECTED, csArg.toString(parser),
                csArg.getClass().getSimpleName());
      }

      String name = ((ControlSequence)csArg).getName();

      ControlSequence cs = parser.getControlSequence(name);

      if (cs != null)
      {
         throw new LaTeXSyntaxException(parser, 
           LaTeXSyntaxException.ERROR_DEFINED, cs.toString(parser));
      }

      stack.push(new TeXCsRef(DataToolSty.LAST_LOADED_NAME));
      stack.push(csArg);
      stack.push(new TeXCsRef("let"));
      stack.push(new TeXPathObject(texPath));
      stack.push(listener.getControlSequence("input"));

      listener.addFileReference(texPath);
   }

   @Override
   public void process(TeXParser parser)
     throws IOException
   {
      process(parser, parser);
   }

}
