2 files changed, 14 insertions(+), 8 deletions(-)

M viewer/Cargo.toml
M viewer/src/main.rs

@@ 6,5 6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+clap = {version="3.0.12", features=["derive"]}
 maildir = "0.5.0"
 mailparse = "0.13.8"

@@ 1,6 1,12 @@
+use clap::Parser;
 use maildir::*;
 use mailparse::*;
-use std::env::args;
+
+#[derive(Parser, Debug)]
+#[clap(author, version, about, long_about = None)]
+struct Cli {
+    maildir: String,
+}
 
 fn get_subject(headers: Vec<MailHeader>) -> Result<String, ()> {
     for h in headers {


@@ 12,13 18,12 @@ fn get_subject(headers: Vec<MailHeader>) -> Result<String, ()> {
 }
 
 fn main() {
-    for dir in args() {
-        let maildir = Maildir::from(dir);
-        for entry in maildir.list_new() {
-            match get_subject(entry.unwrap().headers().unwrap()) {
-                Ok(s) => println!("Subject: {}", s),
-                Err(_) => println!("failed"),
-            }
+    let cli = Cli::parse();
+    let maildir = Maildir::from(cli.maildir);
+    for entry in maildir.list_new() {
+        match get_subject(entry.unwrap().headers().unwrap()) {
+            Ok(s) => println!("Subject: {}", s),
+            Err(_) => println!("failed"),
         }
     }
 }