Improvement: Replaced clap with argh

CHANGELOG.md

@@ -10,6 +10,10 @@ Of note:
 - The changelog 2015.5.2 has been rewritten from each commit content.
 - This file may be amended entirely in the future to adhere to the [GNU Changelog style](https://www.gnu.org/prep/standards/html_node/Style-of-Change-Logs.html#Style-of-Change-Logs)
 
+## [2018.6.3]
+### Changed
+- Replaced [Clap](https://github.com/clap-rs/clap) with [Argh](https://github.com/google/argh) for CLI input parsing, binaries are now 300k lighter.
+
 ## [2018.6.2]
 ### Changed
 - Updated dependencies, changed all `ToString` implementations to `fmt::Display`, and other clippy improvements

Cargo.toml

@@ -2,7 +2,7 @@
 
 [package]
 name = "advent-rs"
-version = "2018.6.2"
+version = "2018.6.3"
 edition = "2021"
 authors = ["Arnaud 'red' Rouyer"]
 readme = "README.md"
@@ -32,7 +32,7 @@ panic = "abort"   # Abort on panic
 # codegen-units = 1 # Reduce number of codegen units to increase optimizations.
 
 [dependencies]
-clap = { version = "4.5.20", features = ["derive"] }
+argh = "0.1.10"
 itertools = "0.13.0"
 md-5 = "0.10.6"
 

src/main.rs

@@ -1,27 +1,26 @@
-use clap::Parser;
+use argh::FromArgs;
 use std::fs;
 use std::io;
 use std::path::Path;
 use std::path::PathBuf;
 
+#[derive(FromArgs)]
 /// Solver for advent of code exercises
-#[derive(Parser, Debug)]
-#[command(version, about, long_about = None)]
 struct Args {
-  /// The year of the exercise, from 2015 to today
-  #[arg(short, long, value_parser = clap::value_parser!(u16))]
+  /// year of the exercise, from 2015 to today
+  #[argh(option, short = 'y')]
   year: u16,
 
-  /// The day of the exercise, from 1 to 25
-  #[arg(short, long, value_parser = clap::value_parser!(u8))]
+  /// day of the exercise, from 1 to 25
+  #[argh(option, short = 'd')]
   day: u8,
 
-  /// The part of the exercise, 1 or 2
-  #[arg(short, long, default_value_t = 1, value_parser = clap::value_parser!(u8))]
+  /// part of the exercise, 1 or 2
+  #[argh(option, short = 'p', default = "1")]
   part: u8,
 
-  // File name
-  #[arg(help = "Input file path (will read from STDIN if empty)", value_parser = clap::value_parser!(PathBuf))]
+  /// file name
+  #[argh(positional, greedy)]
   input: Option<PathBuf>,
 }
 
@@ -48,7 +47,7 @@ pub fn fetch_input(file_path: Option<impl AsRef<Path>>) -> Result<String, std::i
 /// * `part` -  The part of the exercise, 1 or 2.
 /// * `input` - Input file path (will read from STDIN if empty).
 fn main() {
-  let args = Args::parse();
+  let args: Args = argh::from_env();
   let input: String = match fetch_input(args.input) {
     Ok(input_data) => input_data,
     Err(error) => {