[Messaging] Fixing warning reporting config (when messaging config co…

…mes from a separate file) (#1458)

* Fixing warning reporting config when obtained from a separate file

* Adding a IsPathAbsolute() inline static method for Core::File, using it for messaging config

* Using [] instead of at() and checking the size before so that no exception is thrown

Source/WPEFramework/PluginHost.cpp

@@ -576,7 +576,14 @@ POP_WARNING()
 
             if (_config->MessagingCategoriesFile()) {
 
-                messagingSettings = Core::Directory::Normalize(Core::File::PathName(options.configFile)) + _config->MessagingCategories();
+                string messagingCategories = _config->MessagingCategories();
+
+                if (Core::File::IsPathAbsolute(messagingCategories)) {
+                    messagingSettings = messagingCategories;
+                }
+                else {
+                    messagingSettings = Core::Directory::Normalize(Core::File::PathName(options.configFile)) + messagingCategories;
+                }
 
                 std::ifstream inputFile (messagingSettings, std::ifstream::in);
                 std::stringstream buffer;
@@ -641,7 +648,7 @@ POP_WARNING()
                 ReportingSettings WarningReporting;
             } gc;
 
-            gc.FromString(_config->MessagingCategories());
+            gc.FromString(messagingSettings);
 
             WarningReporting::WarningReportingUnit::Instance().Defaults(gc.WarningReporting.Settings.Value());
 #endif

Source/core/FileSystem.h

@@ -198,6 +198,14 @@ namespace Core {
 
             return (result);
         }
+        inline static bool IsPathAbsolute(const string& path)
+        {
+#ifdef __WINDOWS__
+            return ((path.size() > 0 && (path[0] == '\\' || path[0] == '/')) || (path.size() > 2 && path[1] == ':' && (path[2] == '\\' || path[2] == '/')));
+#else
+            return (path.size() > 0 && path[0] == '/');
+#endif
+        }
         inline static string Extension(const string& name)
         {
             string result;