Update version, add building instructions, and use clap for parsing a…

…rguments

Cargo.toml

@@ -1,8 +1,17 @@
 [package]
 name = "no"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
+license = "GPL-3.0"
+description = "Output a string repeatedly until killed."
+homepage = "https://github.com/metamethods/no"
+documentation = "https://github.com/metamethods/no/blob/master/README.md"
+repository = "https://github.com/metamethods/no"
+readme = "README.md"
+keywords = ["unix", "no"]
+authors = ["metamethods <[email protected]>"]
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+clap = { version = "4.4.12", features = ["derive"] }

README.md

@@ -6,8 +6,14 @@ Repeatedly output a line with all specified STRING(s), or 'n'.
 
 ## Usage
 ```bash
-no [STRING]
+no [STRINGS]
 ```
-```bash
-no OPTIONS
-```
+
+## Building
+### Prerequisites
+* [Rustup](https://rustup.rs/)
+
+### Instructions
+1. Clone this repository via `git clone https://github.com/metamethods/no`
+2. Build with `cargo` using `cargo build --release`
+3. The binary will be located at `target/release/no`

src/main.rs

@@ -1,66 +1,19 @@
-// This is the most shittiest code but it works lmao
+use clap::Parser;
 
-fn has_flag(flags: Vec<String>, arguments: &Vec<String>) -> bool {
-  return flags.iter().any(|flag| arguments.contains(flag));
-}
-
-fn get_flags(arguments: &Vec<String>) -> Vec<String> {
-  let mut flags: Vec<String> = Vec::new();
-  for argument in arguments {
-    if argument.starts_with("-") {
-      flags.push(argument.clone());
-    }
-  }
-  return flags;
+/// Repeatedly output a line with all specified STRING(s), or 'n'.
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+  strings: Option<Vec<String>>,
 }
 
 fn main() {
-  let arguments: Vec<String> = std::env::args().collect();
-
-  let help_flag: bool = has_flag(vec!["--help".to_string()], &arguments);
-  let version_flag: bool = has_flag(vec!["--version".to_string()], &arguments);
-
-  let flags = get_flags(&arguments);
-  let valid_flags = vec!["--help".to_string(), "--version".to_string()];
-
-  let expletive = arguments.get(1)
-    .unwrap_or(&"n".to_string()).clone();
-
-  for flag in flags {
-    if !valid_flags.contains(&flag) {
-      println!("no: invalid option -- '{}'", flag);
-      println!("Try 'no --help' for more information.");
-
-      std::process::exit(1);
-    }
-  }
-
-  if help_flag {
-    println!("Usage: no [STRING]...");
-    println!("or:  no OPTION");
-    println!("Repeatedly output a line with all specified STRING(s), or 'n'.\n");
-    println!("  --help     display this help and exit");
-    println!("  --version  output version information and exit\n");
-    println!("GNU ballutils online help: <doesn't exist :troll:>");
-    println!("Report any translation bugs to <nope>");
-    println!("Full documentation <no documents to ever be made>");
-    println!("or available locally via: info '(ballutils) no invocation'");
-
-    std::process::exit(0);
-  }
-
-  if version_flag {
-    println!("no (GNU ballutils) 1.0");
-    println!("Copyright (C) 2024 Free Software Foundation, Inc.");
-    println!("License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.");
-    println!("This is free software: you are free to change and redistribute it."); 
-    println!("There is NO WARRANTY, to the extent permitted by law.\n");
-    println!("Written by metamethods.");
-
-    std::process::exit(0);
-  }
-
   loop {
-    println!("{expletive}");
+    println!(
+      "{}", 
+      Args::parse().strings
+        .unwrap_or(vec!["n".to_string()])
+        .join(" ")
+    );
   }
-}
+}