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