/*
* JBoss, Home of Professional Open Source.
* Copyright 2015, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.cli.handlers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Set;
import org.jboss.as.cli.CommandContext;
import org.jboss.as.cli.CommandFormatException;
import org.jboss.as.cli.impl.ArgumentWithValue;
import org.jboss.as.cli.operation.ParsedCommandLine;
import org.jboss.as.cli.util.CLIExpressionResolver;
/**
*
* @author Alexey Loubyansky
*/
public class EchoVariableHandler extends CommandHandlerWithHelp {
public EchoVariableHandler() {
super("echo");
// The line takes benefit of top level operation/command completer
// that does handle variable completion of any value starting with '$'
// and followed by 0 to n characters.
// No reference is kept for this argument, it is automaticaly added to this
// handler in the ArgumentWithValue constructor.
new ArgumentWithValue(this, 0, "--variable");
}
/* (non-Javadoc)
* @see org.jboss.as.cli.handlers.CommandHandlerWithHelp#handle(org.jboss.as.cli.CommandContext, java.lang.String)
*/
@Override
protected void doHandle(CommandContext ctx) throws CommandFormatException {
final ParsedCommandLine line = ctx.getParsedCommandLine();
String result = line.getSubstitutedLine().substring(line.getOperationName().length()).trim();
if(ctx.isResolveParameterValues()) {
result = CLIExpressionResolver.resolve(result);
}
// apply escape rules
int i = result.indexOf('\\');
if(i >= 0) {
final StringBuilder buf = new StringBuilder(result.length() - 1);
buf.append(result.substring(0, i));
boolean escaped = true;
while(++i < result.length()) {
if(escaped) {
buf.append(result.charAt(i));
escaped = false;
} else {
final char c = result.charAt(i);
if(c == '\\') {
escaped = true;
} else {
buf.append(c);
}
}
}
result = buf.toString();
}
ctx.printLine(result);
}
@Override
protected void recognizeArguments(CommandContext ctx) throws CommandFormatException {
final ParsedCommandLine args = ctx.getParsedCommandLine();
final Set<String> propertyNames = args.getPropertyNames();
if(!propertyNames.isEmpty()) {
final Collection<String> names;
if(helpArg.isPresent(args)) {
if(propertyNames.size() == 1) {
return;
}
names = new ArrayList<String>(propertyNames);
names.remove(helpArg.getFullName());
names.remove(helpArg.getShortName());
} else {
names = propertyNames;
}
throw new CommandFormatException("Unrecognized argument names: " + names);
}
}
}