duke@1: /*
ohair@554:  * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
ohair@554:  * published by the Free Software Foundation.  Oracle designates this
duke@1:  * particular file as subject to the "Classpath" exception as provided
ohair@554:  * by Oracle in the LICENSE file that accompanied this code.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: package com.sun.tools.javac.main;
duke@1: 
duke@1: import java.io.IOException;
duke@1: import java.io.Reader;
duke@1: import java.io.FileReader;
duke@1: import java.io.BufferedReader;
duke@1: import java.io.StreamTokenizer;
duke@1: import com.sun.tools.javac.util.ListBuffer;
duke@1: 
duke@1: /**
duke@1:  * Various utility methods for processing Java tool command line arguments.
duke@1:  *
jjg@581:  *  <p><b>This is NOT part of any supported API.
jjg@581:  *  If you write code that depends on this, you do so at your own risk.
duke@1:  *  This code and its internal interfaces are subject to change or
duke@1:  *  deletion without notice.</b>
duke@1:  */
duke@1: public class CommandLine {
duke@1:     /**
duke@1:      * Process Win32-style command files for the specified command line
duke@1:      * arguments and return the resulting arguments. A command file argument
duke@1:      * is of the form '@file' where 'file' is the name of the file whose
duke@1:      * contents are to be parsed for additional arguments. The contents of
duke@1:      * the command file are parsed using StreamTokenizer and the original
duke@1:      * '@file' argument replaced with the resulting tokens. Recursive command
duke@1:      * files are not supported. The '@' character itself can be quoted with
duke@1:      * the sequence '@@'.
duke@1:      */
duke@1:     public static String[] parse(String[] args)
duke@1:         throws IOException
duke@1:     {
duke@1:         ListBuffer<String> newArgs = new ListBuffer<String>();
duke@1:         for (int i = 0; i < args.length; i++) {
duke@1:             String arg = args[i];
duke@1:             if (arg.length() > 1 && arg.charAt(0) == '@') {
duke@1:                 arg = arg.substring(1);
duke@1:                 if (arg.charAt(0) == '@') {
duke@1:                     newArgs.append(arg);
duke@1:                 } else {
duke@1:                     loadCmdFile(arg, newArgs);
duke@1:                 }
duke@1:             } else {
duke@1:                 newArgs.append(arg);
duke@1:             }
duke@1:         }
duke@1:         return newArgs.toList().toArray(new String[newArgs.length()]);
duke@1:     }
duke@1: 
duke@1:     private static void loadCmdFile(String name, ListBuffer<String> args)
duke@1:         throws IOException
duke@1:     {
duke@1:         Reader r = new BufferedReader(new FileReader(name));
duke@1:         StreamTokenizer st = new StreamTokenizer(r);
duke@1:         st.resetSyntax();
duke@1:         st.wordChars(' ', 255);
duke@1:         st.whitespaceChars(0, ' ');
duke@1:         st.commentChar('#');
duke@1:         st.quoteChar('"');
duke@1:         st.quoteChar('\'');
jjg@507:         while (st.nextToken() != StreamTokenizer.TT_EOF) {
duke@1:             args.append(st.sval);
duke@1:         }
duke@1:         r.close();
duke@1:     }
duke@1: }