nimプロセス実行

概要

nimのプロセス実行操作をコツコツと。

以下メモ

プロセス実行

import osproc,streams,times
proc `$`(t:TimeInfo) : string = format(t, "yyyy/MM/dd HH:mm:ss ")
block:
  var p: Process
  defer:
    p.close
  # プロセス実行
  p = startProcess("/usr/bin/ping","",@["-c","5","127.0.0.1"])
  echo p.processID
  # 標準出力を取得し、コンソールに表示
  let outstr = p.outputStream
  var line:string = ""
  # ストリームから１行ずつフェッチ
  while outstr.readLine(line):
    # 現在時刻を取得
    let now: TimeInfo = getLocalTime(getTime())
    echo now,line
  # 終了待機
  echo p.waitForExit()

(stdout)
10256
2016/06/23 00:24:59 PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
2016/06/23 00:24:59 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.050 ms
2016/06/23 00:25:00 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.043 ms
2016/06/23 00:25:01 64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.044 ms
2016/06/23 00:25:02 64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.051 ms
2016/06/23 00:25:03 64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.047 ms
2016/06/23 00:25:03
2016/06/23 00:25:03 --- 127.0.0.1 ping statistics ---
2016/06/23 00:25:03 5 packets transmitted, 5 received, 0% packet loss, time 3999ms
2016/06/23 00:25:03 rtt min/avg/max/mdev = 0.043/0.047/0.051/0.003 ms
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