apparat.utils.ManagedReader.scala Maven / Gradle / Ivy

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/*
 * This file is part of Apparat.
 *
 * Apparat 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.
 *
 * Apparat 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Apparat. If not, see .
 *
 * Copyright (C) 2010 Joa Ebert
 * http://www.joa-ebert.com/
 *
 */
package apparat.utils

/**
 * @author Joa Ebert
 */
class ManagedReader[T <: { def close(); def readLine(): String }](resource: T) {
	def foreach(f: String => Unit): Unit = {
		def readAll(f: String => Unit): Unit = {
			resource.readLine() match {
				case null => ()
				case line => {
					f(line)
					readAll(f)
				}
			}
		}

		try {
			readAll(f)
		} finally {
			try {
				resource.close()
			} catch {
				case _ =>
			}
		}
	}
}