author | Dan Labrecque <dan.labrecque@oracle.com> |
Thu, 24 May 2012 04:16:47 -0400 | |
changeset 827 | 0944d8c0158b |
permissions | -rw-r--r-- |
827
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/* |
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* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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|
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/* |
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* Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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|
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package com.oracle.solaris.vp.util.cli; |
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|
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import java.util.*; |
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import com.oracle.solaris.vp.util.misc.TextUtil; |
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public class PosixCommandLineParser extends CommandLineParser { |
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// |
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// Inner classes |
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// |
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|
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protected static class Pointer { |
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public int argPointer; |
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public int charIndex; |
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public Pointer(int argPointer, int charIndex) { |
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this.argPointer = argPointer; |
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this.charIndex = charIndex; |
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} |
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} |
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// |
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// Static data |
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// |
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|
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// Options consist of any character except whitespace and '=' |
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private static final String ALLOWED_OPTION_CHARS = "[\\S&&[^=]]"; |
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|
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// Group 1 is the short option list |
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private static final String REGEX_SHORT_OPTION = |
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"^" + PosixOptionFormatter.PREFIX_SHORT_OPTION + |
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"(" + ALLOWED_OPTION_CHARS + ".*)"; |
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|
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// Group 1 is the long option, group 3 is the (optional) value |
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private static final String REGEX_LONG_OPTION = |
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"^" + PosixOptionFormatter.PREFIX_LONG_OPTION + |
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"(" + ALLOWED_OPTION_CHARS + "*)(=(.*))?"; |
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|
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// |
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// Instance data |
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// |
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private int argPointer; |
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private int charIndex; |
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private Stack<Pointer> pointerStack = new Stack<Pointer>(); |
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private OptionFormatter formatter = new PosixOptionFormatter(); |
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|
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// |
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// Constructors |
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// |
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public PosixCommandLineParser() { |
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reset(); |
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} |
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|
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// |
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// PosixCommandLineParser methods |
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// |
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|
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public ParsedOption getNextOption() { |
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// Are we at the end of the raw argument list? |
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if (isDoneParsing()) { |
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return null; |
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} |
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|
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// Save position of this option |
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pointerStack.push(new Pointer(argPointer, charIndex)); |
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|
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String arg = getArgs()[argPointer]; |
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String opt = null; |
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String optArg = null; |
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String[] groups; |
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|
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// Is the current raw argument a long option? |
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if ((groups = TextUtil.match(arg, REGEX_LONG_OPTION)) != null) { |
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// Group 1 is the long option, group 3 is the (optional) value |
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opt = groups[1]; |
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optArg = groups[3]; |
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|
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// Go to next raw argument |
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argPointer++; |
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|
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// Is the current raw argument a short option? |
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} else if ((groups = TextUtil.match(arg, REGEX_SHORT_OPTION)) != null) { |
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// Group 1 is the short option list |
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opt = groups[1].substring(charIndex, charIndex + 1); |
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|
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// Have we reached the end of this raw argument? |
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if (++charIndex == groups[1].length()) { |
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// Go to next raw argument |
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argPointer++; |
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charIndex = 0; |
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} |
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} else { |
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// The current raw argument is not an option -- return an |
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// empty short option |
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opt = ""; |
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optArg = arg; |
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122 |
|
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// Go to next raw argument |
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argPointer++; |
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125 |
} |
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126 |
|
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// System.out.println("Found option: " + opt + "=" + optArg); |
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128 |
|
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ParsedOption option = new ParsedOption(opt, optArg); |
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130 |
|
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return option; |
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132 |
} |
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133 |
|
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public void getNextOptArg(ParsedOption option) { |
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// An opt arg must not aleady have been found |
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if (option.getOptArg() != null || |
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137 |
|
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// Are we at the end of the raw argument list? |
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139 |
isDoneParsing()) { |
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140 |
return; |
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141 |
} |
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142 |
|
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String arg = getArgs()[argPointer]; |
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String[] groups; |
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145 |
|
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// Is the current raw argument a short option? |
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if ((groups = TextUtil.match(arg, REGEX_SHORT_OPTION)) != null && |
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charIndex != 0) { |
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149 |
|
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// The remainder of the short option list (group 1) is |
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// the optArg |
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option.setOptArg(groups[1].substring(charIndex)); |
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153 |
|
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charIndex = 0; |
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155 |
} else { |
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156 |
|
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// The whole option is the optArg |
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158 |
option.setOptArg(arg); |
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159 |
} |
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160 |
argPointer++; |
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161 |
|
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162 |
// System.out.println("Found optArg: " + option.getOpt() + "=" + |
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163 |
// option.getOptArg()); |
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164 |
} |
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165 |
|
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166 |
public void reset() { |
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167 |
argPointer = 0; |
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168 |
charIndex = 0; |
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169 |
pointerStack.clear(); |
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170 |
} |
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171 |
|
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172 |
public void resetToPreviousOption() { |
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173 |
try { |
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174 |
Pointer pointer = pointerStack.pop(); |
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175 |
argPointer = pointer.argPointer; |
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176 |
charIndex = pointer.charIndex; |
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177 |
} |
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178 |
catch (EmptyStackException ignore) {} |
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179 |
} |
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180 |
|
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181 |
public boolean isDoneParsing() { |
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182 |
return argPointer == getArgs().length; |
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183 |
} |
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|
184 |
|
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185 |
public OptionFormatter getOptionFormatter() { |
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186 |
return formatter; |
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187 |
} |
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188 |
} |