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-/* HelpPrinter -- help message printer
- Copyright (C) 2006 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath 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, or (at your option)
-any later version.
-
-GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package gnu.classpath.tools;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-
-/**
- * The shared class to print the help message and exit, when applicable.
- * Support the --help key.
- *
- * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
- */
-public class HelpPrinter
-{
- /**
- * Check for the --help, -help and -? keys. If one is found, print help and
- * exit the program.
- *
- * @param args the program arguments.
- * @param helpResourcePath the path to the help resource, related to the
- * HelpPrinter class.
- */
- public static void checkHelpKey(String[] args, String helpResourcePath)
- {
- for (int i = 0; i < args.length; i++)
- {
- String a = args[i];
- if (a.equals("-?") || a.equalsIgnoreCase("-help")
- || a.equalsIgnoreCase("--help"))
- printHelpAndExit(helpResourcePath);
- }
- }
-
- /**
- * Prints the contents of the resource specified by the designated path.
- *
- * @param helpResourcePath the path to a help resource, related to the
- * HelpPrinter class.
- */
- public static void printHelp(String helpResourcePath)
- {
- InputStream in = HelpPrinter.class.getResourceAsStream(helpResourcePath);
- BufferedReader br = new BufferedReader(new InputStreamReader(in));
- try
- {
- String s;
- while ((s = br.readLine()) != null)
- System.out.println(s);
- }
- catch (IOException x)
- {
- System.err.print("Resource loading is broken:");
- x.printStackTrace(System.err);
- }
- finally
- {
- try
- {
- br.close();
- }
- catch (IOException ignored)
- {
- }
- }
- }
-
- /**
- * Prints the help message and terminates.
- *
- * @param helpResourcePath the path to the help resource, related to the
- * HelpPrinter class.
- */
- public static void printHelpAndExit(String helpResourcePath)
- {
- printHelp(helpResourcePath);
- System.exit(0);
- }
-}