Add a command line option parser

Parse command line options in this library. Need to figure out how to
communicate these over FFI to the Objective-C code.

2 files changed, 52 insertions, 0 deletions

diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..66769a9
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,49 @@
+use getopts::Options;
+
+#[no_mangle]
+#[derive(Default)]
+struct Args {
+    reload: bool,
+    daemon: bool,
+}
+
+#[no_mangle]
+#[derive(Default)]
+pub struct Config {
+    args: Args,
+}
+
+fn print_usage(opts: Options) {
+    let brief = "Usage: dome-key [options]";
+    print!("{}", opts.usage(&brief));
+}
+
+pub fn parse_args(args: &[String]) -> Config {
+    let mut opts = Options::new();
+
+    opts.optflag("d", "daemon", "run the daemon in the current shell");
+    opts.optflag("r", "reload-mappings", "reload the mappings file");
+    opts.optflag("h", "help", "print this help menu");
+
+    let matches = match opts.parse(args) {
+        Ok(m) => m,
+        Err(e) => panic!(e),
+    };
+
+    let mut config = Config::default();
+
+    if matches.opt_present("h") {
+        print_usage(opts);
+        return config;
+    }
+
+    if matches.opt_present("r") {
+        config.args.reload = true;
+    } else if matches.opt_present("d") {
+        config.args.daemon = true;
+    } else {
+        print_usage(opts);
+    }
+
+    config
+}
diff --git a/src/lib.rs b/src/lib.rs
index 8dc8e93..1f57edb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,6 +5,7 @@ extern crate autopilot;
 
 #[macro_use]
 extern crate combine;
+extern crate getopts;
 extern crate libc;
 
 #[macro_use]
@@ -13,8 +14,10 @@ extern crate stderrlog;
 extern crate xdg;
 
 mod cocoa_bridge;
+mod config;
 mod parser;
 
 use parser::{Action, HeadphoneButton, MapAction, MapGroup, MapKind};
 
 pub use cocoa_bridge::*;
+pub use config::{Config, parse_args};