Added private methods to helper. Refs #9186.

- These will be used in methods that write data to workspaces from catalog responses.

Code/Mantid/Framework/ICat/inc/MantidICat/CatalogHelper.h

@@ -49,6 +49,12 @@ namespace Mantid
 
           throw std::runtime_error(exception);
         }
+
+      private:
+        // Convert a file size to human readable file format.
+        std::string bytesToString(int64_t &fileSize);
+        // Helper method that formats a given timestamp.
+        std::string formatDateTime(const time_t &timestamp, const std::string &format);
     };
   }
 }

Code/Mantid/Framework/ICat/src/CatalogHelper.cpp

@@ -1,9 +1,39 @@
 #include "MantidICat/CatalogHelper.h"
+#include "MantidKernel/DateAndTime.h"
 
 namespace Mantid
 {
   namespace ICat
   {
+    /**
+     * Convert a file size to human readable file format.
+     * @param fileSize :: The size in bytes of the file.
+     */
+    std::string CatalogHelper::bytesToString(int64_t &fileSize)
+    {
+      const char* args[] = {"B", "KB", "MB", "GB"};
+      std::vector<std::string> units(args, args + 4);
 
+      unsigned order = 0;
+
+      while (fileSize >= 1024 && order + 1 < units.size())
+      {
+        order++;
+        fileSize = fileSize / 1024;
+      }
+
+      return boost::lexical_cast<std::string>(fileSize) + units.at(order);
+    }
+
+    /**
+     * Formats a given timestamp to human readable datetime.
+     * @param timestamp :: Unix timestamp.
+     * @param format    :: The desired format to output.
+     * @return string   :: Formatted Unix timestamp.
+     */
+    std::string CatalogHelper::formatDateTime(const time_t &timestamp, const std::string &format)
+    {
+      return Kernel::DateAndTime(boost::posix_time::from_time_t(timestamp)).toFormattedString(format);
+    }
   }
 }