1 files changed, 96 insertions, 0 deletions
diff --git a/extdata.c b/extdata.c
new file mode 100644
index 0000000..f71f410
--- /dev/null
+++ b/extdata.c
@@ -0,0 +1,96 @@
+/*
+ * GraphLCD plugin for the Video Disk Recorder
+ *
+ * extdata.c - external data sent via SVDRP
+ *
+ * This file is released under the GNU General Public License. Refer
+ * to the COPYING file distributed with this package.
+ *
+ * (c) 2011      Wolfgang Astleitner <mrwastl AT users sourceforge net>
+ */
+
+#include "extdata.h"
+
+#include <vdr/tools.h>
+
+#include <stdio.h>
+cExtData * cExtData::mExtDataInstance = NULL;
+
+cExtData * cExtData::GetExtData(void) {
+    if (mExtDataInstance == NULL) {
+        mExtDataInstance = new cExtData();
+    }
+    return mExtDataInstance;
+}
+
+
+void cExtData::ReleaseExtData(void) {
+    delete mExtDataInstance;
+    mExtDataInstance = NULL;
+}
+
+
+cExtData::~cExtData(void) {
+    data.clear();
+    expData.clear();
+}
+
+
+bool cExtData::Set(const std::string & key, const std::string & value, const std::string & scope, uint32_t expire ) {
+    if (mExtDataInstance == NULL) return false; // paranoia check
+
+    std::string compkey = scope; compkey += ":"; compkey += key; // <scope>:<key>,  <scope> can be "" (== global)
+    data[compkey] = value;
+    
+    if (expire > 0) {
+        expData[compkey] = cTimeMs::Now() + (expire * 1000);
+    } else {
+        expData.erase(compkey); // just in case of an old expiration entry for compkey         
+    }
+    return true;
+}
+
+
+bool cExtData::Unset(const std::string & key, const std::string & scope ) {
+    if (mExtDataInstance == NULL) return false; // paranoia check
+
+    std::string compkey = scope; compkey += ":"; compkey += key; // <scope>:<key>,  <scope> can be "" (== global)
+    expData.erase(compkey); // ignore result;
+    return ( (data.erase(compkey) > 0) ? true : false );
+}
+
+
+bool cExtData::IsSet(const std::string & key, const std::string & scope ) {
+    std::string ret = Get(key, scope);
+    return ( (ret != "") ? true : false );
+}
+
+
+std::string cExtData::Get(const std::string & key, const std::string & scope ) {
+    if (mExtDataInstance == NULL) return ""; // paranoia check
+
+    std::string compkey;
+    int l = 0;
+    int loops = (scope == "") ? 1 : 2;
+    while ( l < loops) {
+        compkey = (l == 0) ? scope : ""; compkey += ":"; compkey += key; // 1st loop: display-scope, 2nd loop: global
+        it = data.find(compkey);
+        if ( it != data.end() ) {
+            expDataIt = expData.find(compkey);
+            if ( expDataIt != expData.end() ) {
+                uint64_t expts = (*expDataIt).second;
+                if ( cTimeMs::Now() > expts ) {
+                    expData.erase(compkey);
+                    data.erase(compkey);
+                    // expired, thus no result here, but maybe there'll be a hit in global scope, so don't return here
+                } else {
+                    return (*it).second;
+                }
+            } else {
+                return (*it).second;
+            }
+        }
+        l++;
+    }
+    return "";
+}