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#! /usr/bin/env ruby -w
# frozen_string_literal: true
require 'diff/lcs'
require 'diff/lcs/htmldiff'
begin
require 'text/format'
rescue LoadError
Diff::LCS::HTMLDiff.can_expand_tabs = false
end
if ARGV.size < 2 or ARGV.size > 3
warn "usage: #{File.basename($0)} old new [output.html]"
warn " #{File.basename($0)} old new > output.html"
exit 127
end
left = IO.read(ARGV[0]).split($/)
right = IO.read(ARGV[1]).split($/)
options = { :title => "diff #{ARGV[0]} #{ARGV[1]}" }
htmldiff = Diff::LCS::HTMLDiff.new(left, right, options)
if ARGV[2]
File.open(ARGV[2], 'w') do |f|
htmldiff.options[:output] = f
htmldiff.run
end
else
htmldiff.run
end
# vim: ft=ruby
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