Add warnings for binary files

1 files changed, 8 insertions, 0 deletions

diff --git a/src/renderer.rs b/src/renderer.rs
index 7be1ab9..4eec8a6 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -48,6 +48,7 @@ impl<W: Write> Renderer<W> {
         let contents = if let Ok(utf8string) = std::str::from_utf8(&bytes) {
             utf8string
         } else {
+            self.warn_about_binary_file(filename);
             return self.render_binary_file(filename);
         };
         let name = render_filename(filename);
@@ -81,6 +82,13 @@ impl<W: Write> Renderer<W> {
             human_readable_size(self.max_file_size),
         )
     }
+
+    fn warn_about_binary_file(&self, filename: &Path) {
+        eprintln!(
+            "Warning: skipping binary file: {}",
+            render_filename(filename),
+        )
+    }
 }
 
 fn outer_backticks(contents: &str) -> String {