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Copyright (c) 2009-2011 the original author or authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
package org.sonatype.gshell.commands.standard;
Unset a variable or property.

Author(s):
Jason Dillon
Since:
2.5
@Command(name="unset")
public class UnsetCommand
    extends CommandActionSupport
    @Option(name = "m", longName = "mode")
    private SetCommand.Mode mode = ..;
    @Argument(required = true)
    private List<Stringargs;
    @Inject
    public UnsetCommand installCompleters(@Named("variable-name"final Completer c1) {
        assert c1 != null;
        setCompleters(c1null);
        return this;
    }
    public Object execute(final CommandContext contextthrows Exception {
        assert context != null;
        Variables variables = context.getVariables();
        for (String arg : ) {
            String name = String.valueOf(arg);
            switch () {
                case :
                    unsetProperty(name);
                    break;
                case :
                    unsetVariable(variablesname);
                    break;
            }
        }
        return .;
    }
    private void unsetProperty(final String name) {
        .info("Un-setting system property: {}"name);
        System.getProperties().remove(name);
    }
    private void unsetVariable(final Variables varsfinal String name) {
        .info("Un-setting variable: {}"name);
        vars.unset(name);
    }
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