Wrote the beginnings of a new "stats" command.

src/output.cc

@@ -84,6 +84,37 @@ void format_xacts::operator()(xact_t& xact)
   }
 }
 
+void gather_statistics::flush()
+{
+  std::ostream& out(report.output_stream);
+
+  out << "Statistics gathered for this report:" << std::endl
+      << "  Total entries:         " ;
+
+  out << std::right;
+  out.width(6);
+  out << statistics.total_entries << std::endl
+      << "  Total transactions:    ";
+
+  out << std::right;
+  out.width(6);
+  out << statistics.total_xacts << std::endl;
+
+  out.flush();
+}
+
+void gather_statistics::operator()(xact_t& xact)
+{
+  if (last_entry != xact.entry) {
+    statistics.total_entries++;
+    last_entry = xact.entry;
+  }
+  if (last_xact != &xact) {
+    statistics.total_xacts++;
+    last_xact = &xact;
+  }
+}
+
 void format_entries::format_last_entry()
 {
   bool		first = true;

src/output.h

@@ -78,6 +78,41 @@ public:
   virtual void operator()(xact_t& xact);
 };
 
+/**
+ * @brief Brief
+ *
+ * Long.
+ */
+class gather_statistics : public item_handler<xact_t>
+{
+protected:
+  report_t& report;
+  entry_t * last_entry;
+  xact_t *  last_xact;
+
+  struct statistics_t {
+    std::size_t   total_entries;
+    std::size_t   total_xacts;
+
+    statistics_t()
+      : total_entries(0),
+	total_xacts(0) {}
+  }
+    statistics;
+
+public:
+  gather_statistics(report_t& _report)
+    : report(_report), last_entry(NULL), last_xact(NULL) {
+    TRACE_CTOR(gather_statistics, "report&");
+  }
+  virtual ~gather_statistics() {
+    TRACE_DTOR(gather_statistics);
+  }
+
+  virtual void flush();
+  virtual void operator()(xact_t& xact);
+};
+
 /**
  * @brief Brief
  *

src/report.cc

@@ -543,6 +543,11 @@ expr_t::ptr_op_t report_t::lookup(const string& name)
 	    (reporter<>(new format_xacts(*this, HANDLER(register_format_).str()),
 			*this));
 	break;
+
+      case 's':
+	if (is_eq(p, "stats"))
+	  return WRAP_FUNCTOR(reporter<>(new gather_statistics(*this), *this));
+	break;
       }
     }
     break;