01: /*
02: * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.tools.javac.main;
27:
28: import java.io.IOException;
29: import java.io.Reader;
30: import java.io.FileReader;
31: import java.io.BufferedReader;
32: import java.io.StreamTokenizer;
33: import com.sun.tools.javac.util.ListBuffer;
34: import com.sun.tools.javac.util.Version;
35:
36: /**
37: * Various utility methods for processing Java tool command line arguments.
38: *
39: * <p><b>This is NOT part of any API supported by Sun Microsystems. If
40: * you write code that depends on this, you do so at your own risk.
41: * This code and its internal interfaces are subject to change or
42: * deletion without notice.</b>
43: */
44: @Version("@(#)CommandLine.java 1.22 07/05/05")
45: public class CommandLine {
46: /**
47: * Process Win32-style command files for the specified command line
48: * arguments and return the resulting arguments. A command file argument
49: * is of the form '@file' where 'file' is the name of the file whose
50: * contents are to be parsed for additional arguments. The contents of
51: * the command file are parsed using StreamTokenizer and the original
52: * '@file' argument replaced with the resulting tokens. Recursive command
53: * files are not supported. The '@' character itself can be quoted with
54: * the sequence '@@'.
55: */
56: public static String[] parse(String[] args) throws IOException {
57: ListBuffer<String> newArgs = new ListBuffer<String>();
58: for (int i = 0; i < args.length; i++) {
59: String arg = args[i];
60: if (arg.length() > 1 && arg.charAt(0) == '@') {
61: arg = arg.substring(1);
62: if (arg.charAt(0) == '@') {
63: newArgs.append(arg);
64: } else {
65: loadCmdFile(arg, newArgs);
66: }
67: } else {
68: newArgs.append(arg);
69: }
70: }
71: return newArgs.toList().toArray(new String[newArgs.length()]);
72: }
73:
74: private static void loadCmdFile(String name, ListBuffer<String> args)
75: throws IOException {
76: Reader r = new BufferedReader(new FileReader(name));
77: StreamTokenizer st = new StreamTokenizer(r);
78: st.resetSyntax();
79: st.wordChars(' ', 255);
80: st.whitespaceChars(0, ' ');
81: st.commentChar('#');
82: st.quoteChar('"');
83: st.quoteChar('\'');
84: while (st.nextToken() != st.TT_EOF) {
85: args.append(st.sval);
86: }
87: r.close();
88: }
89: }
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