/*
* Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.tools.util;
import java.io.IOException;
import java.io.Reader;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.StreamTokenizer;
import java.util.List;
import java.util.ArrayList;
/**
* Various utility methods for processing Java tool command line arguments.
*
* WARNING: The contents of this source file are not part of any
* supported API. Code that depends on them does so at its own risk:
* they are subject to change or removal without notice.
*/
public class CommandLine {
/**
* Process Win32-style command files for the specified command line
* arguments and return the resulting arguments. A command file argument
* is of the form '@file' where 'file' is the name of the file whose
* contents are to be parsed for additional arguments. The contents of
* the command file are parsed using StreamTokenizer and the original
* '@file' argument replaced with the resulting tokens. Recursive command
* files are not supported. The '@' character itself can be quoted with
* the sequence '@@'.
*/
public static String[] parse(String[] args)
throws IOException
{
ArrayList newArgs = new ArrayList(args.length);
for (int i = 0; i < args.length; i++) {
String arg = args[i];
if (arg.length() > 1 && arg.charAt(0) == '@') {
arg = arg.substring(1);
if (arg.charAt(0) == '@') {
newArgs.add(arg);
} else {
loadCmdFile(arg, newArgs);
}
} else {
newArgs.add(arg);
}
}
return (String[])newArgs.toArray(new String[newArgs.size()]);
}
private static void loadCmdFile(String name, List args)
throws IOException
{
Reader r = new BufferedReader(new FileReader(name));
StreamTokenizer st = new StreamTokenizer(r);
st.resetSyntax();
st.wordChars(' ', 255);
st.whitespaceChars(0, ' ');
st.commentChar('#');
st.quoteChar('"');
st.quoteChar('\'');
while (st.nextToken() != st.TT_EOF) {
args.add(st.sval);
}
r.close();
}
}