package org.sentrysoftware.jawk.util;
   
   /*-
    * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
    * Jawk
    * ჻჻჻჻჻჻
    * Copyright (C) 2006 - 2023 Sentry Software
    * ჻჻჻჻჻჻
    * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser 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 Lesser Public License for more details.
   *
   * You should have received a copy of the GNU General Lesser Public
   * License along with this program.  If not, see
   * <http://www.gnu.org/licenses/lgpl-3.0.html>.
   * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
   */
  
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.InputStream;
  import java.io.Reader;
  import org.slf4j.Logger;
  
  /**
   * Represents one AWK-script file content source.
   *
   * @author Danny Daglas
   */
  public class ScriptFileSource extends ScriptSource {
  
  	private static final Logger LOG = AwkLogger.getLogger(ScriptFileSource.class);
  
  	private String filePath;
  	private Reader fileReader;
  	private InputStream fileInputStream;
  
  	/**
  	 * <p>Constructor for ScriptFileSource.</p>
  	 *
  	 * @param filePath a {@link java.lang.String} object
  	 */
  	public ScriptFileSource(String filePath) {
  		super(filePath, null, filePath.endsWith(".ai"));
  
  		this.filePath = filePath;
  		this.fileReader = null;
  		this.fileInputStream = null;
  	}
  
  	/**
  	 * <p>Getter for the field <code>filePath</code>.</p>
  	 *
  	 * @return a {@link java.lang.String} object
  	 */
  	public String getFilePath() {
  		return filePath;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public Reader getReader() {
  
  		if ((fileReader == null) && !isIntermediate()) {
  			try {
  				fileReader = new FileReader(filePath);
  			} catch (FileNotFoundException ex) {
  				LOG.error("Failed to open script source for reading: " + filePath, ex);
  			}
  		}
  
  		return fileReader;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public InputStream getInputStream() {
  
  		if ((fileInputStream == null) && isIntermediate()) {
  			try {
  				fileInputStream = new FileInputStream(filePath);
  			} catch (FileNotFoundException ex) {
  				LOG.error("Failed to open script source for reading: " + filePath, ex);
  			}
  		}
  
  		return fileInputStream;
  	}
  }