Change the interface to use commands and flags instead of just flags.

Better organization of main (controller style) code.

commands/benchmark.go

@@ -0,0 +1,51 @@
+// Copyright © 2013 Steve Francia <spf@spf13.com>.
+//
+// Licensed under the Simple Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://opensource.org/licenses/Simple-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package commands
+
+import (
+	"github.com/spf13/cobra"
+	"os"
+	"runtime/pprof"
+)
+
+var cpuProfilefile string
+var benchmarkTimes int
+
+var benchmark = &cobra.Command{
+	Use:   "benchmark",
+	Short: "Benchmark hugo by building a site a number of times",
+	Long: `Hugo can build a site many times over and anlyze the
+    running process creating a `,
+	Run: bench,
+}
+
+func init() {
+	benchmark.Flags().StringVar(&cpuProfilefile, "outputfile", "/tmp/hugo-cpuprofile", "path/filename for the profile file")
+	benchmark.Flags().IntVarP(&benchmarkTimes, "count", "n", 13, "number of times to build the site")
+}
+
+func bench(cmd *cobra.Command, args []string) {
+	f, err := os.Create(cpuProfilefile)
+
+	if err != nil {
+		panic(err)
+	}
+
+	pprof.StartCPUProfile(f)
+	defer pprof.StopCPUProfile()
+
+	for i := 0; i < benchmarkTimes; i++ {
+		_, _ = buildSite()
+	}
+}