wmic2tsv.rb: Convert WMIC to TSV.

wmic2tsv.rb

#!/bin/sh
exec ruby -lnx "$0" "$@"
#!ruby
# encoding: utf-8
#
# Copyright (c) 2016 Koichi OKADA. All right reserved.
# This script is distributed under the MIT license.
#
BEGIN {
cmd = File.basename $0
help = <<EOD
Usage: #{cmd} [FILE]
  Convert WMIC to TSV.
ex)
  $ # for Headerlesss UCS2 format
  $ wmic cpu | iconv -f UCS2 -t UTF-8 > cpu.txt
  $ #{cmd} cpu.txt
or
  $ wmic cpu | iconv -f UCS2 -t UTF-8 | #{cmd}
or
  $ # for WMIC header and USC2 format
  $ xxd cpu.txt | head -n4
  00000000: 574d 4943 2082 f083 4383 9383 5883 6781  WMIC ...C...X.g.
  00000010: 5b83 8b82 b582 c482 a282 dc82 b781 4282  [.............B.
  00000020: b582 ce82 e782 ad82 a891 d282 bf82 ad82  ................
  00000030: be82 b382 a281 4241 0064 0064 0072 0065  ......BA.d.d.r.e
 
  $ dd if=cpu.txt bs=1 skip=$[0x37] 2>/dev/null \\
  | iconv -f UCS-2LE -t UTF-8 | wmic2tsv.rb

EOD

  if (STDIN.tty? && ARGV.length <= 0)
    STDERR.puts help
    exit 1
  end
  vals =[]
}

r = []
s = $_
if (ARGF.lineno == 1)
  # Read field names.
  # Field names also defines field size.
  while (s =~ /[^ ]* {2,}/)
    r.push($&)
    s = $'
  end
else
  # Read field value.
  # Field size is defined by the width of field name.
  vals[0].length.times do |i|
    l = vals[0][i].length
    r.push(s[0...l])
    s = s[l..-1]
  end
end
vals.push(r)

END {
  vals.transpose.each do |r|
    print r.join("\t")
  end
}