Start parsing the config

Cargo.lock

@@ -61,6 +61,12 @@ version = "0.2.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e167738f1866a7ec625567bae89ca0d44477232a4f7c52b1c7f2adc2c98804f"
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
+
 [[package]]
 name = "memoffset"
 version = "0.6.5"
@@ -110,4 +116,14 @@ version = "0.1.0"
 dependencies = [
  "evdev",
  "libc",
+ "yaml-rust",
+]
+
+[[package]]
+name = "yaml-rust"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
+dependencies = [
+ "linked-hash-map",
 ]

Cargo.toml

@@ -8,3 +8,4 @@ edition = "2021"
 [dependencies]
 evdev = "0.11.3"
 libc = "0.2"
+yaml-rust = "0.4"

src/config.rs

@@ -0,0 +1,24 @@
+use std::error::Error;
+use std::fs;
+
+pub fn load_config(filename: &str) -> Result<Config, Box<dyn Error>> {
+    let yaml = fs::read_to_string(&filename).unwrap();
+    println!("{}", yaml.len());
+    return Ok(Config { modmap: vec![], keymap: vec![] })
+}
+
+#[derive(Debug)]
+pub struct Config {
+    pub modmap: Vec<Modmap>,
+    pub keymap: Vec<Keymap>,
+}
+
+#[derive(Debug)]
+pub struct Modmap {
+    // TODO
+}
+
+#[derive(Debug)]
+pub struct Keymap {
+    // TODO
+}

src/main.rs

@@ -1,10 +1,13 @@
 use evdev::{Device, EventType};
 use std::error::Error;
+use std::env;
+use std::process::exit;
 
 mod input;
 mod output;
 mod select;
 mod transform;
+mod config;
 
 fn event_loop(input_device: &mut Device) -> Result<(), Box<dyn Error>> {
     let mut output_device = output::build_device(input_device).unwrap();
@@ -24,6 +27,22 @@ fn event_loop(input_device: &mut Device) -> Result<(), Box<dyn Error>> {
 }
 
 fn main() -> Result<(), Box<dyn Error>> {
+    let filename = match env::args().nth(1) {
+        Some(filename) => filename,
+        None => {
+            println!("Usage: xremap <file>");
+            exit(1);
+        },
+    };
+    let config = match config::load_config(&filename) {
+        Ok(config) => config,
+        Err(e) => {
+            println!("Failed to load config '{}': {}", filename, e);
+            exit(1);
+        },
+    };
+    println!("{:?}", config);
+
     let mut device = input::select_device();
     device.grab()?;
     event_loop(&mut device)?;