/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.syntax;
import org.jnode.nanoxml.XMLElement;
/**
* A VerbSyntax matches a given string setting an argument to the string
* "true" if it succeeds. The behavior is similar to an OptionSyntax
* with a 'longName', except that we don't prepend "--" to the symbol.
*
* @author crawley@jnode.org
*/
public class VerbSyntax extends ArgumentSyntax {
private final String symbol;
private final String argName;
public VerbSyntax(String label, String symbol, String argName, String flags, String description) {
super(label, argName, flags, description);
this.symbol = symbol;
if (symbol.length() == 0) {
throw new IllegalArgumentException("empty symbol");
}
this.argName = argName;
if (argName.length() == 0) {
throw new IllegalArgumentException("empty argName");
}
}
@Override
public String format(ArgumentBundle bundle) {
// Hmmmm
return symbol;
}
@Override
public MuSyntax prepare(ArgumentBundle bundle) {
Argument<?> arg = bundle.getArgument(this);
return new MuSequence(
new MuSymbol(symbol),
new MuPreset(arg.getLabel(), "true"));
}
@Override
public XMLElement toXML() {
XMLElement element = basicElement("verb");
element.setAttribute("symbol", symbol);
element.setAttribute("argName", argName);
return element;
}
@Override
public String toString() {
return "VerbSyntax{" + super.toString() + ",symbol=" + symbol +
",argName=" + argName + "}";
}
}