[latexila/symbols] try/catch for resources_lookup_data()

[SÃbastien Wilmet <swilmet src gnome org>]

commit 83666835e7b837dabc3e2193c092ac5bd93789b8
Author: SÃbastien Wilmet <swilmet src gnome org>
Date:   Thu May 3 21:18:08 2012 +0200

    try/catch for resources_lookup_data()

 src/symbols.vala |    9 ++++++---
 src/utils.vala   |   15 ++++++++++++---
 2 files changed, 18 insertions(+), 6 deletions(-)
---
diff --git a/src/symbols.vala b/src/symbols.vala
index fbc4c00..c8d4542 100644
--- a/src/symbols.vala
+++ b/src/symbols.vala
@@ -192,11 +192,14 @@ private class NormalSymbols : ListStore
 
     private void load_symbols ()
     {
+        unowned string? contents =
+            Utils.get_string_from_resource (_resource_path + "data.xml");
+
+        if (contents == null)
+            return;
+
         try
         {
-            unowned string contents =
-                Utils.get_string_from_resource (_resource_path + "data.xml");
-
             MarkupParser parser = { parser_start, null, null, null, null };
             MarkupParseContext context = new MarkupParseContext (parser, 0, this, null);
             context.parse (contents, -1);
diff --git a/src/utils.vala b/src/utils.vala
index d959ab5..4cb06b8 100644
--- a/src/utils.vala
+++ b/src/utils.vala
@@ -75,10 +75,19 @@ namespace Utils
         return true;
     }
 
-    public unowned string get_string_from_resource (string resource_path)
+    public unowned string? get_string_from_resource (string resource_path)
     {
-        Bytes bytes = resources_lookup_data (resource_path, 0);
-        return (string) bytes.get_data ();
+        try
+        {
+            Bytes bytes = resources_lookup_data (resource_path, 0);
+            return (string) bytes.get_data ();
+        }
+        catch (Error e)
+        {
+            warning ("Failed to load data from resource '%s': %s",
+                resource_path, e.message);
+            return null;
+        }
     }