From 0bfee5b7772338fd39bbf708d3e31ea7bcec859b Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Fri, 28 May 2021 12:44:44 +0200
Subject: Refactored loading and cache architecture

---
 src/loading/mod.rs | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 src/loading/mod.rs

(limited to 'src/loading/mod.rs')

diff --git a/src/loading/mod.rs b/src/loading/mod.rs
new file mode 100644
index 00000000..818e7e3c
--- /dev/null
+++ b/src/loading/mod.rs
@@ -0,0 +1,43 @@
+//! Resource loading.
+
+#[cfg(feature = "fs")]
+mod fs;
+
+#[cfg(feature = "fs")]
+pub use fs::*;
+
+use std::rc::Rc;
+
+use crate::font::FaceInfo;
+
+/// A shared byte buffer.
+pub type Buffer = Rc<Vec<u8>>;
+
+/// Loads resources from a local or remote source.
+pub trait Loader {
+    /// Descriptions of all font faces this loader serves.
+    fn faces(&self) -> &[FaceInfo];
+
+    /// Load the font face with the given index in [`faces()`](Self::faces).
+    fn load_face(&mut self, idx: usize) -> Option<Buffer>;
+
+    /// Load a file from a path.
+    fn load_file(&mut self, path: &str) -> Option<Buffer>;
+}
+
+/// A loader which serves nothing.
+pub struct BlankLoader;
+
+impl Loader for BlankLoader {
+    fn faces(&self) -> &[FaceInfo] {
+        &[]
+    }
+
+    fn load_face(&mut self, _: usize) -> Option<Buffer> {
+        None
+    }
+
+    fn load_file(&mut self, _: &str) -> Option<Buffer> {
+        None
+    }
+}
-- 
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