aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.tools.javac.main;
aoqi@0: 
aoqi@0: import java.io.IOException;
aoqi@0: import java.io.Reader;
aoqi@0: import java.io.FileReader;
aoqi@0: import java.io.BufferedReader;
aoqi@0: import java.io.StreamTokenizer;
aoqi@0: import com.sun.tools.javac.util.ListBuffer;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Various utility methods for processing Java tool command line arguments.
aoqi@0:  *
aoqi@0:  *  <p><b>This is NOT part of any supported API.
aoqi@0:  *  If you write code that depends on this, you do so at your own risk.
aoqi@0:  *  This code and its internal interfaces are subject to change or
aoqi@0:  *  deletion without notice.</b>
aoqi@0:  */
aoqi@0: public class CommandLine {
aoqi@0:     /**
aoqi@0:      * Process Win32-style command files for the specified command line
aoqi@0:      * arguments and return the resulting arguments. A command file argument
aoqi@0:      * is of the form '@file' where 'file' is the name of the file whose
aoqi@0:      * contents are to be parsed for additional arguments. The contents of
aoqi@0:      * the command file are parsed using StreamTokenizer and the original
aoqi@0:      * '@file' argument replaced with the resulting tokens. Recursive command
aoqi@0:      * files are not supported. The '@' character itself can be quoted with
aoqi@0:      * the sequence '@@'.
aoqi@0:      */
aoqi@0:     public static String[] parse(String[] args)
aoqi@0:         throws IOException
aoqi@0:     {
aoqi@0:         ListBuffer<String> newArgs = new ListBuffer<String>();
aoqi@0:         for (int i = 0; i < args.length; i++) {
aoqi@0:             String arg = args[i];
aoqi@0:             if (arg.length() > 1 && arg.charAt(0) == '@') {
aoqi@0:                 arg = arg.substring(1);
aoqi@0:                 if (arg.charAt(0) == '@') {
aoqi@0:                     newArgs.append(arg);
aoqi@0:                 } else {
aoqi@0:                     loadCmdFile(arg, newArgs);
aoqi@0:                 }
aoqi@0:             } else {
aoqi@0:                 newArgs.append(arg);
aoqi@0:             }
aoqi@0:         }
aoqi@0:         return newArgs.toList().toArray(new String[newArgs.length()]);
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static void loadCmdFile(String name, ListBuffer<String> args)
aoqi@0:         throws IOException
aoqi@0:     {
aoqi@0:         Reader r = new BufferedReader(new FileReader(name));
aoqi@0:         StreamTokenizer st = new StreamTokenizer(r);
aoqi@0:         st.resetSyntax();
aoqi@0:         st.wordChars(' ', 255);
aoqi@0:         st.whitespaceChars(0, ' ');
aoqi@0:         st.commentChar('#');
aoqi@0:         st.quoteChar('"');
aoqi@0:         st.quoteChar('\'');
aoqi@0:         while (st.nextToken() != StreamTokenizer.TT_EOF) {
aoqi@0:             args.append(st.sval);
aoqi@0:         }
aoqi@0:         r.close();
aoqi@0:     }
aoqi@0: }