| /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| * Copyright (C) 1998-2004 Gerwin Klein <lsf@jflex.de> * |
| * All rights reserved. * |
| * * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License. See the file * |
| * COPYRIGHT for more information. * |
| * * |
| * 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., * |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
| * * |
| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| |
| |
| import java.io.*; |
| |
| %% |
| |
| %class BinaryLexer |
| %8bit |
| |
| %int |
| |
| %{ |
| public static void main(String [] argv) { |
| for (int i = 0; i < argv.length; i++) { |
| try { |
| System.out.print("["+argv[i]+"] is "); |
| BinaryLexer l = new BinaryLexer(new StraightStreamReader(new FileInputStream(argv[i]))); |
| l.yylex(); |
| } |
| catch (Exception e) { |
| e.printStackTrace(System.out); |
| System.exit(1); |
| } |
| } |
| } |
| %} |
| |
| magic = \xCA \xFE \xBA \xBE |
| |
| %% |
| |
| {magic} [^]+ { System.out.println("a class file"); } |
| |
| [^]+ { System.out.println("not a class file"); } |