1 files changed, 51 insertions, 0 deletions
diff --git a/display.c b/display.c
index df32466..e033ab8 100644
--- a/display.c
+++ b/display.c
@@ -56,6 +56,8 @@ cGraphLCDDisplay::cGraphLCDDisplay()
     bBrightnessActive = true;
 
     mService = NULL; /* cannot be initialised here (mGraphLCDState not yet available) */
+    
+    mExtData = new cExtData();
 }
 
 cGraphLCDDisplay::~cGraphLCDDisplay()
@@ -68,6 +70,8 @@ cGraphLCDDisplay::~cGraphLCDDisplay()
     delete mGraphLCDState;
 
     delete mService;
+    
+    delete mExtData;
 }
 
 bool cGraphLCDDisplay::Initialise(GLCD::cDriver * Lcd, const std::string & CfgPath, const std::string & SkinsPath, const std::string & SkinName)
@@ -496,3 +500,50 @@ void cGraphLCDDisplay::Clear() {
 #endif
   mLcd->Refresh(false);
 }
+
+
+
+bool cExtData::Set(std::string key, std::string value, uint32_t expire) {
+    data[key] = value;
+    
+    if (expire > 0) {
+        expData[key] = cTimeMs::Now() + (expire * 1000);
+    } else {
+        expData.erase(key); // just in case of an old expiration entry for key         
+    }
+    return true;
+}
+
+
+bool cExtData::Unset(std::string key) {
+    expData.erase(key); // ignore result;
+    return ( (data.erase(key) > 0) ? true : false );
+}
+
+
+bool cExtData::IsSet(std::string key) {
+    std::string ret = Get(key);
+    return ( (ret != "") ? true : false );
+}
+
+
+std::string cExtData::Get(std::string key) {
+    it = data.find(key);
+    if ( it != data.end() ) {
+        expDataIt = expData.find(key);
+        if ( expDataIt != expData.end() ) {
+            uint64_t expts = (*expDataIt).second;
+            if ( cTimeMs::Now() > expts ) {
+                expData.erase(key);
+                data.erase(key);
+                return "";
+            } else {
+                return (*it).second;
+            }
+        } else {
+            return (*it).second;
+        }
+    } else {
+        return "";
+    }
+}