From 89eff2d82441f0d915cb83c54834d8594cc59a4f Mon Sep 17 00:00:00 2001
From: Michael Bryan <michaelfbryan@gmail.com>
Date: Thu, 14 Dec 2017 20:03:17 +1100
Subject: [PATCH] Added better error messages for missing CSS/JS

---
 src/renderer/html_handlebars/hbs_renderer.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/renderer/html_handlebars/hbs_renderer.rs b/src/renderer/html_handlebars/hbs_renderer.rs
index 71b6091e..aae3cdac 100644
--- a/src/renderer/html_handlebars/hbs_renderer.rs
+++ b/src/renderer/html_handlebars/hbs_renderer.rs
@@ -230,7 +230,8 @@ impl HtmlHandlebars {
                                .chain(html.additional_js.iter());
 
         for custom_file in custom_files {
-            self.write_custom_file(custom_file, book)?;
+            self.write_custom_file(&custom_file, book)
+                .chain_err(|| format!("Copying {} failed", custom_file.display()))?;
         }
 
         Ok(())
@@ -312,10 +313,11 @@ impl Renderer for HtmlHandlebars {
                         &rendered.into_bytes())?;
         info!("[*] Creating print.html ✓");
 
-        // Copy static files (js, css, images, ...)
         debug!("[*] Copy static files");
-        self.copy_static_files(book, &theme, &html_config)?;
-        self.copy_additional_css_and_js(book)?;
+        self.copy_static_files(book, &theme, &html_config)
+            .chain_err(|| "Unable to copy across static files")?;
+        self.copy_additional_css_and_js(book)
+            .chain_err(|| "Unable to copy across additional CSS and JS")?;
 
         // Copy all remaining files
         let src = book.source_dir();