GlusterFS state dump parsing snippet

statedumpparse.rb

#!/usr/bin/env ruby

require 'yaml'
require 'time'

ARRSEP = /^(-----=-----)?$/
HEAD = /^\[(.*)\]$/

d0 = [[]]
d1 = {}

$<.each { |l|
  l = l.strip
  if l =~ /^(DUMP-(?:START|END)-TIME):\s+(.*)/
    d1["_misc"]||={}
    (d1["_misc"]["dates"]||={})[$1] = Time.parse $2
    next
  end

  if l =~ HEAD
    d0 << [l]
    next
  end

  d0.last << l
}

d0.each { |s|
  arraylike = false
  s.grep(/\S/).empty? and next
  head = nil
  while s.last =~ /^\s*$/
    s.pop
  end
  body = catch { |misc2|
    s[0] =~ HEAD ? (head = $1) : (throw misc2)
    body = [[]]
    s[1..-1].each { |l|
      if l =~ ARRSEP
        arraylike = true
        body << []
        next
      end
      body.last << l
    }

    body.reject(&:empty?).map { |e|
      ea = e.map { |l|
        k,v = l.split("=",2)
	[k, begin
	   Integer v
	 rescue ArgumentError
	   begin
	     Float v
	   rescue ArgumentError
	     v
	   end
	 end]
      }
      begin
        ea.to_h
      rescue
        throw misc2
      end
    }
  }

  if body
    (d1[head]||=[]) << (arraylike ? body : body[0])
  else
    d1["_misc"]||={}
    (d1["_misc"]["misc"]||=[]) << s
  end
}

puts d1.to_yaml