001/*
002 * Copyright 2012-2014 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.boot.cli.command.shell;
018
019import org.springframework.boot.cli.command.AbstractCommand;
020import org.springframework.boot.cli.command.Command;
021import org.springframework.boot.cli.command.status.ExitStatus;
022
023/**
024 * {@link Command} to change the {@link Shell} prompt.
025 *
026 * @author Dave Syer
027 */
028public class PromptCommand extends AbstractCommand {
029
030        private final ShellPrompts prompts;
031
032        public PromptCommand(ShellPrompts shellPrompts) {
033                super("prompt", "Change the prompt used with the current 'shell' command. "
034                                + "Execute with no arguments to return to the previous value.");
035                this.prompts = shellPrompts;
036        }
037
038        @Override
039        public ExitStatus run(String... strings) throws Exception {
040                if (strings.length > 0) {
041                        for (String string : strings) {
042                                this.prompts.pushPrompt(string + " ");
043                        }
044                }
045                else {
046                        this.prompts.popPrompt();
047                }
048                return ExitStatus.OK;
049        }
050
051}