/*
    * dpkg - Debian Package library and the Debian Package Maven plugin
    * (c) Copyright 2016 Gerrit Hohl
    *
    * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   */
  package net.sourceforge.javadpkg.impl;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import net.sourceforge.javadpkg.Context;
  import net.sourceforge.javadpkg.Script;
  import net.sourceforge.javadpkg.ScriptVariableReplacer;
  import net.sourceforge.javadpkg.replace.ReplacementException;
  import net.sourceforge.javadpkg.replace.Replacements;
  import net.sourceforge.javadpkg.replace.Replacer;
  import net.sourceforge.javadpkg.replace.ReplacerImpl;
  
  
  /**
   * <p>
   * A {@link ScriptVariableReplacer} implementation.
   * </p>
   *
   * @author Gerrit Hohl (gerrit-hohl@users.sourceforge.net)
   * @version <b>1.0</b>, 02.05.2016 by Gerrit Hohl
   */
  public class ScriptVariableReplacerImpl implements ScriptVariableReplacer {
  	
  	
  	/** The replacer. */
  	private Replacer replacer;
  	
  	
  	/**
  	 * <p>
  	 * Creates a replacer.
  	 * </p>
  	 */
  	public ScriptVariableReplacerImpl() {
  		super();
  		
  		this.replacer = new ReplacerImpl();
  	}
  	
  	
  	@Override
  	public Script replaceScriptVariables(Script script, Replacements replacements, Context context)
  			throws ReplacementException {
  		
  		Script result;
  		List<String> lines;
  		String replaced;
  		
  		
  		if (script == null)
  			throw new IllegalArgumentException("Argument script is null.");
  		if (replacements == null)
  			throw new IllegalArgumentException("Argument replacements is null.");
  		if (context == null)
  			throw new IllegalArgumentException("Argument context is null.");
  		
  		lines = new ArrayList<>();
  		for (String line : script.getLines()) {
  			replaced = this.replacer.replace(line, replacements, context);
  			lines.add(replaced);
  		}
  		result = new ScriptImpl(lines);
  		return result;
  	}
  	
  	
  }