/*
* RHQ Management Platform
* Copyright (C) 2005-2009 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* This program 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 and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.enterprise.client.script;
import gnu.getopt.Getopt;
import gnu.getopt.LongOpt;
import static org.rhq.enterprise.client.script.ScriptCmdLine.ArgType.INDEXED;
import static org.rhq.enterprise.client.script.ScriptCmdLine.ArgType.NAMED;
import org.rhq.enterprise.client.ClientMain;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class CmdLineParser {
public ScriptCmdLine parse(String[] cmdLine) throws CommandLineParseException {
String[] args = Arrays.copyOfRange(cmdLine, 1, cmdLine.length);
String shortOpts = "-:f:";
LongOpt[] longOpts = {
new LongOpt("file", LongOpt.REQUIRED_ARGUMENT, null, 'f'),
new LongOpt("args-style", LongOpt.REQUIRED_ARGUMENT, null, -2)
};
Getopt getopt = new Getopt("exec", args, shortOpts, longOpts, false);
List<String> scriptArgs = new ArrayList<String>();
String argStyle = "indexed";
String scriptName = null;
int code = getopt.getopt();
while (code != -1) {
switch (code) {
case ':':
case '?':
throw new IllegalArgumentException("Invalid options");
case 1:
scriptArgs.add(getopt.getOptarg());
break;
case 'f':
scriptName = getopt.getOptarg();
break;
case -2://ClientMain.ARGS_STYLE_ID:
argStyle = getopt.getOptarg();
if (isInvalidArgStyle(argStyle)) {
throw new CommandLineParseException(argStyle + " - invalid value for style option");
}
break;
}
code = getopt.getopt();
}
return createScriptCmdLine(scriptName, argStyle, scriptArgs);
}
private boolean isInvalidArgStyle(String argStyle) {
return !(INDEXED.value().equals(argStyle) || NAMED.value().equals(argStyle));
}
private ScriptCmdLine createScriptCmdLine(String scriptName, String argStyle,
List<String> args) {
ScriptCmdLine cmdLine = new ScriptCmdLine();
cmdLine.setScriptFileName(scriptName);
if (INDEXED.value().equals(argStyle)) {
cmdLine.setArgType(INDEXED);
for (String arg : args) {
cmdLine.addArg(new ScriptArg(arg));
}
}
else {
cmdLine.setArgType(NAMED);
for (String arg : args) {
cmdLine.addArg(parseNamedArg(arg));
}
}
return cmdLine;
}
private NamedScriptArg parseNamedArg(String arg) {
String[] tokens = arg.split("=");
String name = tokens[0];
String value = null;
if (tokens.length > 1) {
StringBuilder buffer = new StringBuilder();
for (int i = 1; i < tokens.length; ++i) {
buffer.append(tokens[i]);
}
value = buffer.toString();
}
return new NamedScriptArg(name, value);
}
}