Parse command line argument.

[rup.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index 7a179af..09965c1 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,9 @@ use askama::Template;
 
 use ron::de::from_reader;
 use serde::Deserialize;
-use std::fs::File;
+use std::{fs::File, env::args};
+
+use itertools::Itertools;
 
 mod consts;
 mod crypto;
@@ -50,8 +52,38 @@ struct Config {
     port: u16
 }
 
+fn get_exe_name() -> String {
+    let first_arg = std::env::args().nth(0).unwrap();
+    //dbg!(&first_arg);
+    let sep: &[_] = &['\\', '/'];
+    first_arg[first_arg.rfind(sep).unwrap()+1..].to_string()
+}
+
+fn print_usage() {
+    println!("Usage:");
+    println!(" {} [--help] [--encrypt <message>]", get_exe_name());
+}
+
 fn main() -> std::io::Result<()> {
-    println!("Starting RUP...");
+    let args: Vec<String> = args().collect();
+
+    if args.iter().any(|arg| arg == "--help") {
+        print_usage();
+        return Ok(());
+    } else if let Some((position_arg_encrypt, _)) = args.iter().find_position(|arg| arg == &"--encrypt") {
+        match args.iter().nth(position_arg_encrypt + 1) {
+            Some(mess_to_encrypt) => {
+                let encrypted_mess = mess_to_encrypt;
+                //let encrypted_mess = crypto::encrypt(key: &str, plain_text: &str);
+                println!("Encrypted message: {}", encrypted_mess);
+            }
+            None => print_usage()
+        }
+
+        return Ok(());
+    }
+
+    println!("Starting RUP as web server...");
 
     let config: Config = {
         let f = File::open(consts::FILE_CONF).expect(&format!("Failed to open configuration file {}", consts::FILE_CONF));
@@ -61,6 +93,8 @@ fn main() -> std::io::Result<()> {
         }
     };
 
+    let key = File::open(consts::FILE_KEY).expect(&format!("Failed to open key file: {}", consts::FILE_KEY));
+
     println!("Configuration: {:?}", config);
 
     let mut listenfd = ListenFd::from_env();