historyコマンドの標準出力結果から.zsh_historyに変換する（stdoutに出力）

main.go

package main
​
import (
	"bufio"
	"fmt"
	"os"
	"regexp"
	"strconv"
	"time"
)
​
var sc = bufio.NewScanner(os.Stdin)
​
func main() {
	stdin := bufio.NewScanner(os.Stdin)
	for stdin.Scan() {
		text := stdin.Text()
		rep := regexp.MustCompile(`\s+`)
		result := rep.Split(text, -1)
​
		hyphen := regexp.MustCompile(`-`)
		timeSplited := hyphen.Split(result[2], -1)
		colon := regexp.MustCompile(`:`)
		hourMinuteSplited := colon.Split(result[3], -1)
		var command string
		for i := 4; i < len(result); i++ {
			command += result[i]
			if i == len(result)-1 {
				break
			}
			command += " "
		}
​
		year, _ := strconv.Atoi(timeSplited[0])
		month, _ := strconv.Atoi(timeSplited[1])
		day, _ := strconv.Atoi(timeSplited[2])
		hour, _ := strconv.Atoi(hourMinuteSplited[0])
		min, _ := strconv.Atoi(hourMinuteSplited[1])
​
		t := time.Date(year, time.Month(month), day, hour, min, 0, 0, time.Local)
		unixTimeStamp := t.Unix()
​
		fmt.Printf(": %d:0;%s\n", unixTimeStamp, command)
	}
}