From 8b4b49cad2253ab1b9492656aff7bf02eddf07aa Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Mon, 18 Nov 2013 15:40:14 +0000
Subject: [PATCH] Read-only mode fixes.

---
 src/Airports/xmlloader.cxx | 2 +-
 src/GUI/new_gui.cxx        | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Airports/xmlloader.cxx b/src/Airports/xmlloader.cxx
index 59a9ca969..8291358b4 100644
--- a/src/Airports/xmlloader.cxx
+++ b/src/Airports/xmlloader.cxx
@@ -50,7 +50,7 @@ void XMLLoader::load(FGAirportDynamics* d)
   }
 
   flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
-  if (!cache->isCachedFileModified(path)) {
+  if (!cache->isCachedFileModified(path) || cache->isReadOnly()) {
     return;
   }
   
diff --git a/src/GUI/new_gui.cxx b/src/GUI/new_gui.cxx
index ca1c2f50d..af0738121 100644
--- a/src/GUI/new_gui.cxx
+++ b/src/GUI/new_gui.cxx
@@ -339,8 +339,10 @@ NewGUI::readDir (const SGPath& path)
       string name = nameprop->getStringValue();
       _dialog_names[name] = xmlPath;
     // update cached values
-      cache->stampCacheFile(xmlPath);
-      cache->writeStringProperty(xmlPath.str(), name);
+        if (!cache->isReadOnly()) {
+            cache->stampCacheFile(xmlPath);
+            cache->writeStringProperty(xmlPath.str(), name);
+        }
     } // of directory children iteration
   
     txn.commit();
-- 
2.39.5