Test mode finder

Add a new `moder.c` based on `includer.c` to test getting a mode and
then getting an action for a mode mapping.

Doesn't completely work currently. Right now all I get is this output:

    $ ./moder
    2
    Segmentation fault: 11

Clearly I'm messing up something with the pointer in
`c_run_key_action()`. Not sure what it is yet.

Changed `CKeyActionResult.in_mode` to be a `Trigger` instead of a
`HeadphoneButton` list. That allows us to pass it directly into the
second argument of `c_run_key_action()` without converting.

But maybe the pointer value isn't living long enough? Not sure what the
problem is yet.

1 files changed, 12 insertions, 2 deletions

diff --git a/src/cocoa_bridge.rs b/src/cocoa_bridge.rs
index 920ea02..15cee95 100644
--- a/src/cocoa_bridge.rs
+++ b/src/cocoa_bridge.rs
@@ -86,7 +86,7 @@ impl<'a> KeyActionResult<'a> {
 pub struct CKeyActionResult {
     pub action: *const c_char,
     pub kind: *const ActionKind,
-    pub in_mode: *const HeadphoneButton,
+    pub in_mode: *const Trigger,
 }
 
 #[no_mangle]
@@ -120,7 +120,14 @@ pub extern "C" fn c_run_key_action(
             );
             let in_mode = k.in_mode.map_or_else(
                 || ptr::null(),
-                |m| m.as_ptr(),
+                |m| {
+                    let trigger = Trigger {
+                        buttons: m.as_ptr(),
+                        length: m.len(),
+                    };
+
+                    &trigger
+                },
             );
 
             CKeyActionResult {
@@ -149,6 +156,9 @@ pub extern "C" fn run_key_action_for_mode<'a>(
     let sample_maps = "map <up> k
 map <down> j
 map <play><down> works!
+mode <play><up> {
+    map <down> hello
+}
 ";
 
     // Figure out how to persist this without re-parsing