1 files changed, 28 insertions, 3 deletions

diff --git a/src/cache.cpp b/src/cache.cpp
index 1646d0a..de505b8 100644
--- a/src/cache.cpp
+++ b/src/cache.cpp
@@ -1,14 +1,18 @@
 #include "cache.h"
 #include <bu/file.h>
 #include <bu/archive.h>
+#include <bu/sio.h>
+using namespace Bu;
 
 Cache::Cache() :
+        bCacheChanged( false ),
         bIsLoaded( false )
 {
 }
 
 Cache::~Cache()
 {
+        save();
 }
 
 void Cache::bind( const Bu::FString &sCacheFile )
@@ -21,19 +25,40 @@ void Cache::load()
 {
         if( bIsLoaded )
                 return;
-        Bu::File fIn( sCacheFile, Bu::File::Read );
-        Bu::Archive ar( fIn, Bu::Archive::load );
 
-        ar >> hRequires >> hVariables;
+        try
+        {
+                Bu::File fIn( sCacheFile, Bu::File::Read );
+                Bu::Archive ar( fIn, Bu::Archive::load );
+
+                ar >> hRequires >> hVariables;
+        }
+        catch(...) { }
 
         bIsLoaded = true;
 }
 
 void Cache::save()
 {
+        if( !bIsLoaded )
+                return;
+        if( bCacheChanged == false )
+                return;
+
         Bu::File fIn( sCacheFile, Bu::File::WriteNew );
         Bu::Archive ar( fIn, Bu::Archive::save );
 
         ar << hRequires << hVariables;
 }
 
+StrList Cache::getRequires( const Bu::FString &sOutput )
+{
+        return hRequires.get( sOutput );
+}
+
+void Cache::setRequires( const Bu::FString &sOutput, StrList lReqs )
+{
+        hRequires.insert( sOutput, lReqs );
+        bCacheChanged = true;
+}
+