Added lastIndexOf helper function

src/app/definition.cpp

@@ -49,3 +49,21 @@ char *dateTimeFormater(char *pointer, const uint8_t value, const char character)
   
   return pointer;
 }
+
+char *lastIndexOf(char *str, const char character)
+{
+  char *last(NULL), *current(str); 
+  do
+  {
+    current = strchr(current, character);
+    if(current != NULL)
+    {
+      last = current;
+      if(*(current+1) == '\0')break;
+        
+      current += 1;
+    }
+  }while(current != NULL);
+
+  return last;
+}

src/app/definition.h

@@ -55,6 +55,8 @@ typedef struct viewLink{
 
 char *addChar(char *pointer, const char character);
 
+char *lastIndexOf(char *str, const char character);
+
 char *dateTimeFormater(char *pointer, const uint8_t value, const char character);
 
 #endif //DEFINITION_H