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

   1 // mod argument_parser;
   2 mod configuration;
   3 mod command;
   4 mod constants;
   5 mod metadata;
   6
   7 use std::iter::once;
   8 use std::env::args;
   9 use std::io::Result;
  10 use command::{available_commands, Command, help::Help};
  11 use configuration::Configuration;
  12
  13 fn main() -> Result<()> {
  14     let configuration = Configuration::new();
  15     let commands = available_commands();
  16     let arguments: Vec<String> = args().collect();
  17
  18     if let Some(command_name) = arguments.get(1) {
  19         if let Some(main_command) = commands.into_iter().find(|c| c.command() == command_name) {
  20             let before_commands = main_command.before_dependencies();
  21             let after_commands = main_command.after_dependencies();
  22
  23             let command_chain: Vec<Box<dyn Command>> = before_commands
  24                 .into_iter()
  25                 .chain(once(main_command))
  26                 .chain(after_commands.into_iter())
  27                 .collect();
  28
  29             for command in command_chain {
  30                 let result = command.execute(arguments.get(2), &configuration, command_name);
  31                 if let Err(_) = result {
  32                     return result;
  33                 }
  34             }
  35
  36             return Ok(())
  37         }
  38     }
  39
  40     Help::new().execute(None, &configuration, &"help".to_string())
  41 }