From 0e606138c5cd9a636a1954945fa0a03c267ef9c6 Mon Sep 17 00:00:00 2001
From: alisdair sullivan <alisdairsullivan@yahoo.ca>
Date: Tue, 24 Feb 2015 20:36:15 -0800
Subject: print warning if cover can't annotate source and skip file

---
 src/rebar_prv_cover.erl | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/rebar_prv_cover.erl b/src/rebar_prv_cover.erl
index 4bcef29..791e4e9 100644
--- a/src/rebar_prv_cover.erl
+++ b/src/rebar_prv_cover.erl
@@ -150,12 +150,20 @@ analyze_to_file(Mod, State, Task) ->
     ok = filelib:ensure_dir(filename:join([TaskDir, "dummy.html"])),
     case code:ensure_loaded(Mod) of
         {module, _} ->
-            cover:analyze_to_file(Mod, mod_to_filename(TaskDir, Mod), [html]);
+            write_file(Mod, mod_to_filename(TaskDir, Mod));
         {error, _}  ->
             ?WARN("Can't load module ~ts.", [Mod]),
             {ok, []}
     end.
 
+write_file(Mod, FileName) ->
+    case cover:analyze_to_file(Mod, FileName, [html]) of
+        {ok, File} -> {ok, File};
+        {error, Reason} ->
+            ?WARN("Couldn't write annotated file for module ~p for reason ~p", [Mod, Reason]),
+            {ok, []}
+    end.
+
 mod_to_filename(TaskDir, M) ->
     filename:join([TaskDir, atom_to_list(M) ++ ".html"]).
 
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