stubs for macos font loading

Cargo.toml

@@ -46,6 +46,9 @@ features = [
 ]
 version = "0.2.0"
 
+[target.'cfg(target_os = "macos")'.dependencies]
+core-text = "9.2.0"
+
 [features]
 debug-escape-sequences = ["term/debug-escape-sequences"]
 

src/font/coretext.rs

@@ -0,0 +1,20 @@
+//! We'll put macOS Core Text stuff in here
+use config::{Config, TextStyle};
+use failure::Error;
+use font::{FontSystem, NamedFont};
+
+pub type FontSystemImpl = CoreTextSystem;
+
+pub struct CoreTextSystem {}
+
+impl CoreTextSystem {
+    pub fn new() -> Self {
+        Self {}
+    }
+}
+
+impl FontSystem for CoreTextSystem {
+    fn load_font(&self, config: &Config, style: &TextStyle) -> Result<Box<NamedFont>, Error> {
+        bail!("load_font");
+    }
+}

src/font/mod.rs

@@ -18,6 +18,11 @@ pub mod fontconfigandfreetype;
 #[cfg(all(unix, not(target_os = "macos")))]
 use self::fontconfigandfreetype::FontSystemImpl;
 
+#[cfg(target_os = "macos")]
+pub mod coretext;
+#[cfg(target_os = "macos")]
+use self::coretext::FontSystemImpl;
+
 use super::config::{Config, TextStyle};
 use term::CellAttributes;
 

src/main.rs

@@ -1,3 +1,5 @@
+#[cfg(target_os = "macos")]
+extern crate core_text;
 extern crate egli;
 extern crate euclid;
 #[macro_use]