Don't throw exception if no valid file found; instead log it, and return nil.

src/scot/weft/i18n/core.clj

@@ -133,7 +133,7 @@
   * `default-locale` should be a locale specifier to use if no acceptable locale can be
   identified.
 
-  Returns a map of message keys to strings."
+  Returns a map of message keys to strings; if no useable file is found, returns nil."
   {:doc/format :markdown}
   [^String accept-language-header ^String resource-path ^String default-locale]
   (let [file-path (first
@@ -143,6 +143,7 @@
                         #(find-language-file-name % resource-path)
                         (acceptable-languages accept-language-header))))]
     (timbre/debug (str "Found i18n file at '" file-path "'"))
+    (try
       (read-string
         (slurp
           (or
@@ -150,7 +151,10 @@
             (.getAbsolutePath
               (io/file
                 resource-path
-              (str default-locale ".edn"))))))))
+                (str default-locale ".edn"))))))
+      (catch Exception any
+        (timbre/error (str "Failed to load internationalisation because " (.getMessage any)))
+        nil))))
 
 
 (def get-messages

test/scot/weft/i18n/test/core.clj

@@ -203,4 +203,7 @@
     (is
       (=
         "Ceci n'est pas une pipe."
-        (:pipe (get-messages "en-GB;q=0.9, fr-FR" "resources/i18n" "en-GB"))))))
+        (:pipe (get-messages "en-GB;q=0.9, fr-FR" "resources/i18n" "en-GB"))))
+    (is
+      (= nil (get-messages "xx-XX;q=0.5, yy-YY" "resources/i18n" "zz-ZZ"))
+      "If no usable file is found, an exception should not be thrown.")))