git.r.bdr.sh - rbdr/blog/blob - src/command/help.rs

   1 use std::io::Result;
   2 use super::available_commands;
   3
   4 pub struct Help;
   5
   6 impl Help {
   7     pub fn new() -> Self {
   8         Help
   9     }
  10 }
  11
  12 impl super::Command for Help {
  13     fn before_dependencies(&self) -> Vec<Box<dyn super::Command>> {
  14         vec![]
  15     }
  16
  17     fn execute(&self, _: Option<&String>) -> Result<()> {
  18         let commands = available_commands();
  19         println!("Usage:");
  20         println!("");
  21         for command in commands {
  22             print!("blog {} ", command.command());
  23             println!("{}", command.help());
  24         }
  25         return Ok(())
  26     }
  27
  28     fn after_dependencies(&self) -> Vec<Box<dyn super::Command>> {
  29         vec![]
  30     }
  31
  32     fn command(&self) -> &'static str {
  33         "help"
  34     }
  35
  36     fn help(&self) -> &'static str {
  37         "\t\t\t\tPrints this help"
  38     }
  39 }