hipa/main.go

package main

import (
    "bufio"
    "os"
    "strings"
)

var history = make(map[string]int)

func main() {
    histfile, _ := os.Open(gethistfile())
    scanner := bufio.NewScanner(histfile)
    for scanner.Scan() {
        line := scanner.Text()
        history[strings.TrimSpace(line)] = 0
    }
    defer histfile.Close()
    newhistfile, _ := os.OpenFile(mktmpfile(), os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0600)
    newhistfile.Truncate(0)
    for key, _ := range history {
        newhistfile.WriteString(key + "\n")
    }
    newhistfile.Sync()
    CopyFile(mktmpfile(), gethistfile())
    defer newhistfile.Close()
}