Package org.jostraca.directive

Source Code of org.jostraca.directive.InitDirective

/*
* Name:    InitDirective
* Author:  Richard Rodger
*
* Copyright (c) 2002-2004 Richard Rodger
*
* 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/


// package
package org.jostraca.directive;


// import
import org.jostraca.Template;
import org.jostraca.TemplateActionHandler;
import org.jostraca.Property;

import org.jostraca.unit.BasicUnit;
import org.jostraca.unit.BasicUnitList;
import org.jostraca.unit.BasicUnitProcessor;

import org.jostraca.section.Section;

import org.jostraca.transform.TextualTransformManagerTable;

import org.jostraca.util.ValueSet;
import org.jostraca.util.ValueCode;
import org.jostraca.util.Standard;
import org.jostraca.util.PropertySet;
import org.jostraca.util.RegExp;
import org.jostraca.util.RegExpException;



/** For backwards compatibility with version 0.1.0.
*  This directive is deprecated.
*/
public class InitDirective implements Directive {

 
  // private static
  private static final String   NAME    = "init";
  private static final String[] ALIASES = new String[] { NAME };
  private static final String   REGEXP_MatchArguments = "^(.*)$";

  private String  iRegExpText_MatchArguments = Standard.EMPTY;
  private RegExp  iRegExpMatchArguments      = null;


  // public methods

  public InitDirective() throws DirectiveException {
    setupRegExps();
  }


  // interface Directive

  public String perform(
      String                       pDirectiveName,
      String                       pArguments,

      BasicUnitList                pBasicUnitList,
      TemplateActionHandler        pTemplateActionHandler,

      PropertySet                  pPropertySet,
      TextualTransformManagerTable pTextualTransformManagerTable,
                      
      Template pTemplate
  )
    throws DirectiveException
  {

    String match = doRegExpMatchArguments( pArguments );

    if( !Standard.EMPTY.equals( match ) ) {
      if( pPropertySet.isYes( Property.jostraca_old ) ) {
        pTemplateActionHandler.append( Section.NAME_init, match );
      }

      BasicUnit bu = new BasicUnit( BasicUnitProcessor.TYPE_script, Section.NAME_init, match );
      pBasicUnitList.add( bu );
    }
   
    return null;
  }


  public String getName() {
    return NAME;
  }

  /** Should include value of getName() */
  public String[] getAliases() {
    return ALIASES;
  }

 

  // private methods

  /** Create regular expressions from properties. */
  private void setupRegExps() throws DirectiveException {

    // MatchArguments
    try {
      iRegExpText_MatchArguments = REGEXP_MatchArguments;
      iRegExpMatchArguments      = RegExp.make( iRegExpText_MatchArguments, RegExp.ModeSet.DotMatchesNewline );
    }
    catch( RegExpException e ) {
      throw new DirectiveException
        ( DirectiveException.CODE_bad_regexp, e.getMessage(),
          new ValueSet( ValueCode.REGEXP, iRegExpText_MatchArguments ) );
    }

  }


  /** perform reg exp */
  private String doRegExpMatchArguments( String pContent ) throws DirectiveException {
    try {
      String match = iRegExpMatchArguments.matchFirstSub( pContent );
      return match;
    }
    catch( Exception e ) {
      throw new DirectiveException
        ( DirectiveException.CODE_regexp_mismatch, e.getMessage(),
          new ValueSet( ValueCode.REGEXP, iRegExpText_MatchArguments,
                        ValueCode.CONTENT, pContent ) );
    }
  }

}
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