Added "rm -rf" command that will remove all contents of the directory…

… including subdirectories recursively. The read-only attribute for files will be ignored.

OpenLog_v2/OpenLog_v2.pde

@@ -1004,17 +1004,17 @@ void command_shell(void)
       if(command_arg == 0)
         continue;
 
-      //Remove empty folder.
-      //@NOTE: Unfortunately -rf does not work due to a buggy rmRfStar() function.
-      //Calling rmRfStart() will result in OpenLog rebooting.
-      if (strncmp_P(command_arg, PSTR("-f"), 2) == 0)
+      //Removing an empty folder "rm -f".
+      //Removing non-empty folder and all subfolders "rm -rf".
+      tmp_var = 1;
+      if (strncmp_P(command_arg, PSTR("-f"), 2) == 0 || (tmp_var = strncmp_P(command_arg, PSTR("-rf"), 3)) == 0)
       {
         if (file.open(currentDirectory, command_arg, O_READ))
-          file.close(); //There is a file called "-f"
+          file.close(); //There is a file called "-f" or "-rf" so remove the file
         else
         {
           //remove and goto parent directory
-          if (currentDirectory.rmDir()) gotoDir("..");
+          if ((tmp_var == 0) ? currentDirectory.rmRfStar() : currentDirectory.rmDir()) gotoDir("..");
 #ifdef INCLUDE_SIMPLE_EMBEDDED
           command_succedded = 1;
 #endif

OpenLog_v2/SdFat.cpp

@@ -1042,7 +1042,7 @@ uint8_t SdFile::rmRfStar(void)
     if (!f.open(*this, index, O_READ)) return false;
     if (f.isSubDir()) {
       // recursively delete
-      return rmRfStar();
+      if (!f.rmRfStar()) return false;
     }
     else {
       // ignore read-only