/*
* $Id$
*
* 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 javax.naming.NameNotFoundException;
import org.jnode.driver.console.CompletionInfo;
import org.jnode.shell.ShellUtils;
import org.jnode.shell.CommandLine.Token;
import org.jnode.shell.alias.AliasManager;
/**
* This class implements alias-valued command line arguments. At the moment, it performs
* minimal syntax checking and performs completion against the shell's alias namespace.
*
* @author qades
* @author crawley@jnode.org
*/
public class AliasArgument extends Argument<String> {
public AliasArgument(String label, int flags, String description) {
super(label, flags, new String[0], description);
}
public AliasArgument(String label, int flags) {
this(label, flags, null);
}
public AliasArgument(String label) {
this(label, 0);
}
@Override
public String doAccept(Token value, int flags) throws CommandSyntaxException {
if (value.text.length() == 0) {
throw new CommandSyntaxException("empty alias name");
}
return value.text;
}
public void doComplete(CompletionInfo completions, String partial, int flags) {
try {
// get the alias manager
final AliasManager aliasMgr =
ShellUtils.getShellManager().getCurrentShell().getAliasManager();
// collect matching aliases
for (String alias : aliasMgr.aliases()) {
if (alias.startsWith(partial)) {
completions.addCompletion(alias);
}
}
} catch (NameNotFoundException ex) {
// should not happen!
return;
}
}
@Override
protected String argumentKind() {
return "alias";
}
}