/*
* $Id$
*
* 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;
/**
* An OptionSyntax matches a short or long option (e.g. '-X' or '--xflag') followed by
* a value for the bound Argument. If the bound Argument is a FlagArgument, the presence
* of the option string is sufficient.
*
* @author crawley@jnode.org
*/
public class OptionSyntax extends ArgumentSyntax {
private final String longOptName;
private final String shortOptName;
public OptionSyntax(String argName, String optionName, char optionChar,
String flags, String description) {
super(null, argName, flags, description);
this.longOptName = "--" + optionName;
this.shortOptName = "-" + optionChar;
}
public OptionSyntax(String argName, char optionChar, String flags, String description) {
super(null, argName, flags, description);
this.longOptName = null;
this.shortOptName = "-" + optionChar;
}
public OptionSyntax(String argName, String optionName, String flags, String description) {
super(null, argName, flags, description);
this.longOptName = "--" + optionName;
this.shortOptName = null;
}
public OptionSyntax(String argName, String optionName, char optionChar) {
this(argName, optionName, optionChar, null, null);
}
public OptionSyntax(String argName, char optionChar) {
this(argName, optionChar, null, null);
}
public OptionSyntax(String argName, String optionName) {
this(argName, optionName, null, null);
}
@Override
public String toString() {
return ("OptionSyntax{label='" + label +
", short='" + shortOptName + "', long='" + longOptName + "'}");
}
@Override
public String format(ArgumentBundle bundle) {
Argument<?> arg = bundle.getArgument(this);
StringBuilder sb = new StringBuilder();
if (longOptName != null) {
sb.append(longOptName);
}
if (shortOptName != null) {
if (longOptName != null) {
sb.append(" | ");
}
sb.append(shortOptName);
}
if (!(arg instanceof FlagArgument)) {
sb.append(" <").append(arg.formatForUsage()).append('>');
}
return sb.toString();
}
@Override
public MuSyntax prepare(ArgumentBundle bundle) {
Argument<?> arg = bundle.getArgument(this);
if (arg instanceof FlagArgument) {
if (longOptName == null) {
return new MuSequence(
new MuSymbol(shortOptName),
new MuPreset(arg.getLabel(), "true"));
} else if (shortOptName == null) {
return new MuSequence(
new MuSymbol(longOptName),
new MuPreset(arg.getLabel(), "true"));
} else {
return new MuAlternation(
new MuSequence(
new MuSymbol(shortOptName),
new MuPreset(arg.getLabel(), "true")),
new MuSequence(
new MuSymbol(longOptName),
new MuPreset(arg.getLabel(), "true")));
}
} else {
if (longOptName == null) {
return new MuSequence(
new MuSymbol(shortOptName),
new MuArgument(arg.getLabel()));
} else if (shortOptName == null) {
return new MuSequence(
new MuSymbol(longOptName),
new MuArgument(arg.getLabel()));
} else {
return new MuAlternation(
new MuSequence(
new MuSymbol(shortOptName),
new MuArgument(arg.getLabel())),
new MuSequence(
new MuSymbol(longOptName),
new MuArgument(arg.getLabel())));
}
}
}
public String getShortOptName() {
return shortOptName;
}
public String getLongOptName() {
return longOptName;
}
@Override
public XMLElement toXML() {
XMLElement element = basicElement("option");
element.setAttribute("argLabel", getArgName());
if (longOptName != null) {
element.setAttribute("longName", longOptName.substring(2));
}
if (shortOptName != null) {
element.setAttribute("shortName", shortOptName.substring(1));
}
return element;
}
}