syncthing/benchfilter.go
2015-05-23 15:08:17 +02:00

51 lines
1.1 KiB
Go

// Copyright (C) 2015 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// +build ignore
// Neatly format benchmarking output which otherwise looks like crap.
package main
import (
"bufio"
"bytes"
"fmt"
"os"
"regexp"
"text/tabwriter"
)
var (
benchRe = regexp.MustCompile(`^Bench`)
spacesRe = regexp.MustCompile(`\s+`)
numbersRe = regexp.MustCompile(`\b[\d\.]+\b`)
)
func main() {
tw := tabwriter.NewWriter(os.Stdout, 1, 1, 1, ' ', 0)
br := bufio.NewScanner(os.Stdin)
n := 0
for br.Scan() {
line := br.Bytes()
if benchRe.Match(line) {
n++
line = spacesRe.ReplaceAllLiteral(line, []byte("\t"))
line = numbersRe.ReplaceAllFunc(line, func(n []byte) []byte {
return []byte(fmt.Sprintf("%12s", n))
})
tw.Write(line)
tw.Write([]byte("\n"))
} else if n > 0 && bytes.HasPrefix(line, []byte("ok")) {
n = 0
tw.Flush()
fmt.Printf("%s\n\n", line)
}
}
tw.Flush()
}