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#!/usr/bin/env ruby
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#
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# hal_device_tree.rb
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#
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# Print a tree from the output of hal-device
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# Useful to analyse bug reports
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#
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require 'getopts'
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require 'open-uri'
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def parse_file(path)
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io = path
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io = open(io) if io.class != IO
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list = Array.new
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current = nil
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io.each_line do |line|
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if line =~ /^\d/
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list << current unless current.nil?
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current = Hash.new
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next
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end
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line.gsub!(/\(.*\)/, '')
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line.gsub!("'", '')
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k,v = line.split('=')
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next if k.strip.empty?
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current[k.strip] = v.strip
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end
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list
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end
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def print_node(node, pad = 0)
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print '|'
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pad.times { print "----" }
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print '-- '
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print "#{node['info.category']} " if node['info.category']
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print "#{node['info.product']} " if node['info.product']
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print " -> #{node['info.udi']}" if $OPT_u
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puts
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end
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def collect_children(list, root)
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root['childs'] = Array.new
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children = list.select { |e| e['info.parent'] == root['info.udi'] }
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children.each do |child|
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root['childs'] << child
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collect_children(list, child)
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end
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end
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def print_children(root, pad = 1)
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root['childs'].each do |child|
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print_node(child, pad)
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if not child['childs'].empty?
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print_children(child, pad + 1)
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end
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end
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end
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raise ArgumentError if getopts('uf:').nil?
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list = parse_file($OPT_f || STDIN)
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roots = list.select { |e| e['info.parent'].match(/computer/) unless e['info.parent'].nil? }
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roots.each do |root|
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collect_children(list, root)
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print_node(root)
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print_children(root)
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puts '|'
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end
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