Some very big changes I cannot break down to distinct commits.

[ipfire.org.git] / www / webapp / helpers.py

#!/usr/bin/python

import simplejson
import subprocess

def size(s):
	suffixes = ["B", "K", "M", "G", "T",]
	
	idx = 0
	while s >= 1024 and idx < len(suffixes):
		s /= 1024
		idx += 1

	return "%.0f%s" % (s, suffixes[idx])

def ping(host, count=5, wait=10):
	cmd = subprocess.Popen(
		["ping", "-c%d" % count, "-w%d" % wait, host],
		stdout = subprocess.PIPE,
		stderr = subprocess.PIPE,
	)

	latency = None

	out, error = cmd.communicate()

	for line in out.split("\n"):
		if not line.startswith("rtt"):
			continue

		line = line.split()
		if len(line) < 4:
			break

		rtts = line[3].split("/")
		if len(rtts) < 4:
			break

		latency = "%.1f" % float(rtts[1])

	return latency