用Ruby处理NS2 log file

ruby 代码

#!/usr/local/bin/ruby
require 'mathn'
files = Dir.glob("udpsink*.txt")

interval=ARGV[0]

if ARGV.size <=1
    interval = 49
end

files.each do |f|
    dl = []
    ps=[]
    udpindex = f.match(/(\d+)/)[1].to_i

    File.open(f, 'r').each do |line|
        ll=line.split
        dl << ll[3].to_f
        ps << ll[4].to_i
    end

    sum = 0
    ps.each {|p| sum += p}

    delay=0
    dl.each {|d| delay += d}

    printf "UDP #%d Throughput: %0.2f Kbps   Average delay: %0.2f Sec\n", udpindex, sum*8/1024/interval.to_f, delay/dl.size
end

注意几个地方

1) Dir.glob方法返回一个array

2) File.open(f, 'r').each 可以调用block

3) string.match(regex)[1] 返回匹配组

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• 2007-04-16 21:23
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