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# The most ugly test script I've ever written!
# Shame on me!

require 'pathname'
require 'profile' if ARGV.include? '-p'

MYDIR = File.dirname(__FILE__)
LIBDIR = Pathname.new(MYDIR).join('..', 'lib').cleanpath.to_s
$LOAD_PATH.unshift MYDIR, LIBDIR
require 'coderay'

@size = ARGV.fetch(2, 100).to_i * 2**10  # 2**10 = 1 Ki

lang = ARGV.fetch(0) do
  puts <<-HELP
Usage:
  ruby bench.rb (c|ruby|dump) (null|text|tokens|count|statistic|yaml|html) [SIZE in KB] [stream]

  SIZE defaults to 100.
  SIZE = 0 means the whole input.
  SIZE is ignored when dump is input.

-p generates a profile (slow! use with SIZE = 1)
-o shows the output
stream enabled streaming mode

Sorry for the strange interface. I will improve it in the next release.
  HELP
  exit
end

format = ARGV.fetch(1, 'html').downcase

$stream = ARGV.include? 'stream'
$optimize = ARGV.include? 'opt'
$style = ARGV.include? 'style'

require 'benchmark'
require 'fileutils'

if format == 'comp'
  format = 'html'
  compare = true
  begin
    require 'syntax'
    require 'syntax/convertors/html.rb'
  rescue LoadError
    puts 'Syntax no found!! (Try % gem install syntax)'
  end
end

$dump_input = lang == 'dump'
$dump_output = format == 'dump'
require 'coderay/helpers/gzip_simple.rb' if $dump_input

def here fn = nil
  return MYDIR unless fn
  File.join here, fn
end

n = ARGV.find { |a| a[/^N/] }
N = if n then n[/\d+/].to_i else 1 end
o = ARGV.find { |a| a[/^O/] }
Offset = if o then o[/\d+/].to_i else 1 end
b = ARGV.find { |a| a[/^B/] }
BoldEvery = if b then b[/\d+/].to_i else 10 end
$filename = ARGV.include?('strange') ? 'strange' : 'example'

(compare ? 1 : 5).times do
Benchmark.bm(20) do |bm|

  data = nil
  File.open(here("#$filename." + lang), 'rb') { |f| data = f.read }
  if $dump_input
    @size = CodeRay::Tokens.load(data).text_size
  else
    raise 'Example file is empty.' if data.empty?
    unless @size.zero?
      data += data until data.size >= @size
      data = data[0, @size]
    end
    @size = data.size
  end

  time = bm.report('CodeRay') do
    options = {
      :tab_width => 2,
      :line_numbers => :inline,
      :line_numbers_offset => Offset,
      :bold_every => BoldEvery,
      :wrap => :page,
      :css => $style ? :style : :class,
    }
    $hl = CodeRay.encoder(format, options) unless $dump_output
    N.times do
      if $stream
        if $dump_input
          raise 'Can\'t stream dump.'
        elsif $dump_output
          raise 'Can\'t dump stream.'
        end
        $o = $hl.encode_stream(data, lang, options)
        @token_count = $hl.token_stream.size
      else
        if $dump_input
          tokens = CodeRay::Tokens.load data
        else
          tokens = CodeRay.scan(data, lang)
          @token_count = tokens.size
        end
        @token_count = tokens.size
        tokens.optimize! if $optimize
        if $dump_output
          $o = tokens.optimize.dump
        else
          $o = tokens.encode($hl)
        end
      end
    end
    $file_created = here('test.' +
      ($dump_output ? 'dump' : $hl.file_extension))
    File.open($file_created, 'wb') do |f|
      f.write $o
    end
  end
  Dir.chdir(here) do
    FileUtils.copy 'test.dump', 'example.dump' if $dump_output
  end

  time_real = time.real / N

  puts "\t%7.2f KB/s (%d.%d KB)\t%0.2f KTok/s" % [((@size / 1024.0) / time_real), @size / 1024, @size % 1024, ((@token_count / 1000.0) / time_real)]
  puts $o if ARGV.include? '-o'

  if compare
    if defined? Syntax
      time = bm.report('Syntax') do
        c = Syntax::Convertors::HTML.for_syntax lang
        puts 'No Syntax syntax found!' if c.tokenizer.is_a? Syntax::Default
        begin
          v = $VERBOSE
          $VERBOSE = nil
          N.times do
            output = c.convert(data)
          end
          $VERBOSE = v
        rescue => boom
          output = boom.inspect
        end
        Dir.chdir(here) do
          File.open('test.syntax.' + format, 'wb') do |f|
            f.write '<html><head><style>%s</style></head><body><div class="ruby">%s</div></body></html>' % [DATA.read, output]
          end
        end
        $file_created << ", test.syntax.#{format}"
      end
      puts "\t%7.2f KB/s" % ((@size / 1024.0) / time.real)
    end

=begin
    time = bm.report('SilverCity') do
      Dir.chdir(here) do
        File.open('input-data', 'w') { |f| f.write data }
        N.times do
          `c:/Python/Scripts/source2html.pyo --generator=#{lang} input-data > test.silvercity.html`
        end
      end
      $file_created << ", test.silvercity.#{format}"
    end
    puts "\t%7.2f KB/s" % ((@size / 1024.0) / time.real)
=end
    time = bm.report('Pygments') do
      Dir.chdir(here) do
        Dir.chdir File.expand_path('~/Python/pygments') do
          File.open('input-data', 'wb') { |f| f.write data }
          N.times do
            `pygmentize -O encoding=utf-8 -l#{lang} -fhtml input-data > /dev/null`
          end
        end
      end
      #$file_created << ", test.silvercity.#{format}"
    end
    puts "\t%7.2f KB/s" % ((@size / 1024.0) / time.real)
  end

end
end
puts "Files created: #$file_created"

STDIN.gets if ARGV.include? 'wait'

__END__
.ruby .normal {}
.ruby .comment { color: #005; font-style: italic; }
.ruby .keyword { color: #A00; font-weight: bold; }
.ruby .method { color: #077; }
.ruby .class { color: #074; }
.ruby .module { color: #050; }
.ruby .punct { color: #447; font-weight: bold; }
.ruby .symbol { color: #099; }
.ruby .string { color: #944; background: #FFE; }
.ruby .char { color: #F07; }
.ruby .ident { color: #004; }
.ruby .constant { color: #07F; }
.ruby .regex { color: #B66; background: #FEF; }
.ruby .number { color: #F99; }
.ruby .attribute { color: #7BB; }
.ruby .global { color: #7FB; }
.ruby .expr { color: #227; }
.ruby .escape { color: #277; }

.xml .normal {}
.xml .namespace { color: #B66; font-weight: bold; }
.xml .tag { color: #F88; }
.xml .comment { color: #005; font-style: italic; }
.xml .punct { color: #447; font-weight: bold; }
.xml .string { color: #944; }
.xml .number { color: #F99; }
.xml .attribute { color: #BB7; }

.yaml .normal {}
.yaml .document { font-weight: bold; color: #07F; }
.yaml .type { font-weight: bold; color: #05C; }
.yaml .key { color: #F88; }
.yaml .comment { color: #005; font-style: italic; }
.yaml .punct { color: #447; font-weight: bold; }
.yaml .string { color: #944; }
.yaml .number { color: #F99; }
.yaml .time { color: #F99; }
.yaml .date { color: #F99; }
.yaml .ref { color: #944; }
.yaml .anchor { color: #944; }