spring ShellPrompts 源码
springboot ShellPrompts 代码
文件路径：/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ShellPrompts.java
/*
* Copyright 2012-2019 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
*
* https://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.springframework.boot.cli.command.shell;
import java.util.ArrayDeque;
import java.util.Deque;
/**
* Abstraction to manage a stack of prompts.
*
* @author Phillip Webb
* @since 1.0.0
*/
public class ShellPrompts {
private static final String DEFAULT_PROMPT = "$ ";
private final Deque<String> prompts = new ArrayDeque<>();
/**
* Push a new prompt to be used by the shell.
* @param prompt the prompt
* @see #popPrompt()
*/
public void pushPrompt(String prompt) {
this.prompts.push(prompt);
}
/**
* Pop a previously pushed prompt, returning to the previous value.
* @see #pushPrompt(String)
*/
public void popPrompt() {
if (!this.prompts.isEmpty()) {
this.prompts.pop();
}
}
/**
* Returns the current prompt.
* @return the current prompt
*/
public String getPrompt() {
return this.prompts.isEmpty() ? DEFAULT_PROMPT : this.prompts.peek();
}
}
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- 所属分类： 后端技术
- 本文标签： Java Spring Spring Boot
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