Argument support with clap_lex

Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ab_glyph"
@@ -609,6 +609,12 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "clap_lex"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46ad14479a25103f283c0f10005961cf086d8dc42205bb44c46ac563475dca6"
+
 [[package]]
 name = "clipboard-win"
 version = "5.4.0"
@@ -804,6 +810,7 @@ dependencies = [
  "bitflags 2.8.0",
  "bytemuck",
  "calloop 0.14.2",
+ "clap_lex",
  "cosmic-comp-config",
  "cosmic-config",
  "cosmic-protocols",
@@ -1467,7 +1474,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33d852cb9b869c2a9b3df2f71a3074817f01e1844f839a144f5fcef059a4eb5d"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2520,7 +2527,7 @@ dependencies = [
 [[package]]
 name = "id_tree"
 version = "1.8.0"
-source = "git+https://github.com/Drakulix/id-tree.git?branch=feature/copy_clone#632a57d6d49160e18d7300fa7edae52281ec5482"
+source = "git+https://github.com/Drakulix/id-tree.git?branch=feature%2Fcopy_clone#632a57d6d49160e18d7300fa7edae52281ec5482"
 dependencies = [
  "snowflake",
 ]
@@ -2912,7 +2919,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc2f4eb4bc735547cfed7c0a4922cbd04a4655978c09b54f1f7b228750664c34"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -4386,7 +4393,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.4.15",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4987,7 +4994,7 @@ dependencies = [
  "getrandom",
  "once_cell",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5280,7 +5287,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69fff37da548239c3bf9e64a12193d261e8b22b660991c6fd2df057c168f435f"
 dependencies = [
  "cc",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -5960,7 +5967,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]

Cargo.toml

@@ -60,6 +60,8 @@ rustix = { version = "0.38.32", features = ["process"] }
 smallvec = "1.13.2"
 rand = "0.8.5"
 reis = { version = "0.4", features = ["calloop"] }
+# CLI arguments
+clap_lex = "0.7"
 
 [dependencies.id_tree]
 branch = "feature/copy_clone"

src/main.rs

@@ -24,6 +24,10 @@ use wayland::protocols::overlap_notify::OverlapNotifyState;
 
 use crate::wayland::handlers::compositor::client_compositor_state;
 
+use clap_lex::RawArgs;
+
+use std::error::Error;
+
 pub mod backend;
 pub mod config;
 pub mod dbus;
@@ -95,7 +99,30 @@ impl State {
     }
 }
 
-fn main() -> Result<()> {
+fn main() -> Result<(), Box<dyn Error>> {
+    let raw_args = RawArgs::from_args();
+    let mut cursor = raw_args.cursor();
+    let git_hash = option_env!("GIT_HASH").unwrap_or("unknown");
+
+    // Parse the arguments
+    while let Some(arg) = raw_args.next_os(&mut cursor) {
+        match arg.to_str() {
+            Some("--help") | Some("-h") => {
+                print_help(env!("CARGO_PKG_VERSION"), git_hash);
+                return Ok(());
+            }
+            Some("--version") | Some("-V") => {
+                println!(
+                    "cosmic-comp {} (git commit {})",
+                    env!("CARGO_PKG_VERSION"),
+                    git_hash
+                );
+                return Ok(());
+            }
+            _ => {}
+        }
+    }
+
     // setup logger
     logger::init_logger()?;
     info!("Cosmic starting up!");
@@ -193,6 +220,21 @@ fn main() -> Result<()> {
     Ok(())
 }
 
+fn print_help(version: &str, git_rev: &str) {
+    println!(
+        r#"cosmic-comp {version} (git commit {git_rev})
+System76 <info@system76.com>
+	    
+Designed for the COSMIC™ desktop environment, cosmic-comp is a Wayland Compositor.
+	    
+Project home page: https://github.com/pop-os/cosmic-comp
+	    
+Options:
+  -h, --help     Show this message
+  -v, --version  Show the version of cosmic-comp"#
+    );
+}
+
 fn init_wayland_display(
     event_loop: &mut EventLoop<state::State>,
 ) -> Result<(DisplayHandle, OsString)> {