Detailed explanation

The Chicory CLI framework is a Java class library for building a command line interface (CLI).The core principle of the framework is to encapsulate each module of the command line interface into an independent component, and to achieve a complete CLI function by defining and configuration. The Chicory CLI framework provides the following core concepts and technical principles: 1. Command: The command is the basic execution unit in the CLI framework, representing a specific operation or function.In the Chicory framework, each command is usually represented by a Java class, and a specific interface needs to be implemented so that the framework can correctly call and execute the command. 2. parameter parser (Argument Parser): The parameter parser is responsible for parsing the parameters in the command line and converted it into a Java object so that the command can read and use these parameters.The Chicory framework provides a built -in parameter parser that can automatically resolve the parameters in the command line according to the definition of the command and map it to the attributes of the Java class corresponding to the command. 3. Command Executor: The command actuator is responsible for the actual execution command and processing the result of the command.The Chicory framework is defined by defining a specific interface, allowing users to customize the command actuator and associate it with the command.The command actuator can perform various logical operations, including calling other class libraries or services, processing input and output, etc. 4. Command registration and routing: The Chicory framework uses command registration and routing mechanism to manage all available commands.Users can register a custom command and bind it to a specific command line instruction.When the user enters a instruction in the command line, the framework will find the corresponding command according to the instruction, and call the corresponding command actuator to execute the command. 5. Configuration file and annotation: The Chicory framework supports the use of configuration files or annotations to define and configure commands.The user can use the configuration file to specify the command and the corresponding actuator, or use the annotation on the command class to define the command and parameter.These configuration information allows the framework to automatically load and register commands, simplifying the management and configuration process of commands. The following is an example code to illustrate the use of the Chicory CLI framework: import com.github.chicoryapp.Chicory; import com.github.chicoryapp.ChicoryCLI; import com.github.chicoryapp.annotations.Command; import com.github.chicoryapp.annotations.Option; @Command(name = "greet", description = "Greet someone") public class GreetCommand implements ChicoryCLI { @Option(name = {"-n", "--name"}, description = "Name of the person to greet") private String name; public void execute() { System.out.println("Hello, " + name + "!"); } public static void main(String[] args) { Chicory chicory = new Chicory(); chicory.register(GreetCommand.class); chicory.run(args); } } The above code defines an command called "GREET" to say hello to someone.The command accepts an optional parameter "-n" or "--name" to specify the name of the person who wants to say hello.When the user enters "Greet -n John" in the command line, the framework will call the Execute method of the GreetCommand class and output "Hello, John!". In this example, we use the annotations provided by the Chicory framework @Command and @opting to define commands and parameters.By calling the Chinese register method, we register the GreetCommand class into the framework.In the Main method of the GreetCommand class, we created a Chicory instance and started the framework by calling its Run method to process the command line input. Through the above example code, we can see how the Chicory CLI framework realizes a simple command line interface based on the Java class library, and completes specific functions by defining and configuration commands, parameters, and command executors.