| /* |
| * Copyright (c) 2015, 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. |
| * |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| public class SAGetopt { |
| |
| private String[] _argv; |
| |
| private int _optind; // index in arguments array |
| private int _optopt; // index within an argument |
| private String _optarg; // last option argument |
| private boolean _optreset; // special handling of first call |
| |
| public SAGetopt(String[] args) { |
| _argv = args.clone(); |
| _optind = 0; |
| _optopt = 1; |
| _optarg = null; |
| _optreset = true; |
| } |
| |
| public String getOptarg() { |
| return _optarg; |
| } |
| |
| public int getOptind() { |
| return _optind; |
| } |
| |
| private void extractOptarg(String opt) { |
| // Argument expected |
| if (_optind > _argv.length) { |
| throw new SAGetoptException("Not enough arguments for '" + opt + "'"); |
| } |
| |
| if (! _argv[_optind].isEmpty() && _argv[_optind].charAt(0) == '-') { |
| throw new SAGetoptException("Argument is expected for '" + opt + "'"); |
| } |
| |
| _optarg = _argv[_optind]; |
| _optind += 1; |
| } |
| |
| private String processLongOptions(String carg, String[] longOptStr) { |
| List<String> los = Arrays.asList(longOptStr); |
| String[] ca = carg.split("=", 2); |
| |
| if (los.contains(ca[0])) { |
| if (ca.length > 1) { |
| throw new SAGetoptException("Argument is not expected for '" + ca[0] + "'"); |
| } |
| return carg; |
| } |
| |
| if (los.contains(ca[0] + "=")) { |
| if (ca.length > 1) { |
| // GNU style options --file=name |
| _optarg = ca[1]; |
| } |
| else { |
| // Mixed style options --file name |
| try { |
| extractOptarg(ca[0]); |
| } catch (ArrayIndexOutOfBoundsException e) { |
| throw new SAGetoptException("Argument is expected for '" + ca[0] + "'"); |
| } |
| } |
| |
| return ca[0]; |
| } |
| |
| throw new SAGetoptException("Invalid option '" + ca[0] + "'"); |
| } |
| |
| public String next(String optStr, String[] longOptStr) { |
| |
| if (_optind >= _argv.length || _argv[_optind] == null) { |
| // All arguments processed |
| return null; |
| } |
| |
| String carg = _argv[_optind]; |
| _optarg = null; |
| |
| if (_optreset) { |
| // End of option batch like '-abc' reached, expect option to start from '-' |
| |
| if (carg.isEmpty() || carg.charAt(0) != '-' || carg.equals("--")) { |
| // Stop processing on -- or first non-option argument; |
| return null; |
| } |
| |
| if (carg.startsWith("--")) { |
| // Handle long options, it can't be combined so it's simple |
| if (longOptStr == null || longOptStr.length == 0) { |
| // No long options expected, stop options processing |
| return null; |
| } |
| ++ _optind; |
| |
| // at this point carg contains at least one character besides -- |
| carg = carg.substring(2); |
| return processLongOptions(carg, longOptStr); |
| } |
| |
| if (optStr == null || optStr.length() == 0) { |
| // No short options |
| return null; |
| } |
| |
| // At this point carg[0] contains '-' |
| _optreset = false; |
| _optopt = 1; |
| } |
| |
| char ch = carg.charAt(_optopt); |
| |
| // adjust pointer to next character |
| _optopt += 1; |
| |
| // Okay, ready to process options like |
| // -abc -d bla -ef |
| |
| int chIndex = optStr.indexOf(ch); |
| if (chIndex == -1) { |
| throw new SAGetoptException("Invalid option '" + ch + "'"); |
| } |
| |
| if (_optopt >= carg.length()) { |
| _optind += 1; |
| _optreset = true; |
| } |
| |
| if (chIndex < optStr.length()-1 && optStr.charAt(chIndex+1) == ':') { |
| // Argument expected |
| extractOptarg(String.valueOf(ch)); |
| } |
| |
| return String.valueOf(ch); |
| } |
| } |