Enhancement - statistics

- Added total data file size to statistics report.
- Implemented util.cpp/formatBytes.

src/report.cpp

@@ -29,6 +29,7 @@
 #include <sstream>
 #include <fstream>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
@@ -1594,6 +1595,21 @@ std::string handleReportStats ()
 {
   std::stringstream out;
 
+  // Go get the file sizes.
+  size_t dataSize = 0;
+
+  struct stat s;
+  std::string location = expandPath (context.config.get ("data.location"));
+  std::string file = location + "/pending.data";
+  if (!stat (file.c_str (), &s))
+    dataSize += s.st_size;
+
+  file = location + "/completed.data";
+  if (!stat (file.c_str (), &s))
+    dataSize += s.st_size;
+
+  // TODO Include transaction log?
+
   // Get all the tasks.
   std::vector <Task> tasks;
   context.tdb.lock (context.config.get ("locking", true));
@@ -1712,6 +1728,10 @@ std::string handleReportStats ()
   table.addCell (row, 0, "Projects");
   table.addCell (row, 1, (int)allProjects.size ());
 
+  row = table.addRow ();
+  table.addCell (row, 0, "Data size");
+  table.addCell (row, 1, formatBytes (dataSize));
+
   if (totalT)
   {
     row = table.addRow ();

src/util.cpp

@@ -147,6 +147,20 @@ std::string formatSecondsCompact (time_t delta)
   return std::string (formatted);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Convert a quantity in seconds to a more readable format.
+std::string formatBytes (size_t bytes)
+{
+  char formatted[24];
+
+       if (bytes > 1000000000) sprintf (formatted, "%.1f GiB", (bytes / 1000000000.0));
+  else if (bytes >    1000000) sprintf (formatted, "%.1f MiB", (bytes /    1000000.0));
+  else if (bytes >       1000) sprintf (formatted, "%.1f KiB", (bytes /       1000.0));
+  else                         sprintf (formatted, "%d B", (int)bytes                );
+
+  return commify (formatted);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 int autoComplete (
   const std::string& partial,

src/util.h

@@ -54,6 +54,7 @@ bool confirm (const std::string&);
 void delay (float);
 std::string formatSeconds (time_t);
 std::string formatSecondsCompact (time_t);
+std::string formatBytes (size_t);
 int autoComplete (const std::string&, const std::vector<std::string>&, std::vector<std::string>&);
 const std::string uuid ();
 int convertDuration (const std::string&);