config: Add `--version` flag

Should print the version of the program. Doesn't actually do any
printing in Rust, because the Rust library's version number is different
from the DomeKey program version. We just indicate to the Objective-C
code that it should print the version number.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/config.rs b/src/config.rs
index b4cab10..6b9d673 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -16,6 +16,7 @@ type Milliseconds = u16;
 pub struct Args {
     pub reload: bool,
     pub daemon: bool,
+    pub version: bool,
     pub license: *mut c_char,
 }
 
@@ -24,6 +25,7 @@ impl Default for Args {
         Args {
             reload: false,
             daemon: false,
+            version: false,
             license: ptr::null_mut(),
         }
     }
@@ -63,6 +65,7 @@ pub fn parse_args<'a>(args: &[String], config: &'a mut Config) -> &'a mut Config
         "register the software using a license plist file",
         "FILE"
     );
+    opts.optflag("v", "version", "print the program version");
     opts.optflag("h", "help", "print this help menu");
 
     let matches = match opts.parse(&args[1..]) {
@@ -84,6 +87,8 @@ pub fn parse_args<'a>(args: &[String], config: &'a mut Config) -> &'a mut Config
             Ok(str) => config.args.license = str.into_raw(),
             Err(e) => dkeprintln!("{}", e),
         }
+    } else if matches.opt_present("v") {
+        config.args.version = true;
     } else {
         print_usage(opts);
     }