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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
require 'rubygems'
require 'bundler'
Bundler.require(:default, :development)
# stdlib
require 'pathname'
class VisualTestApp < Sinatra::Application
BASE = Pathname.new(__FILE__).dirname
SAMPLES = BASE.join('samples')
ROOT = BASE.parent.parent
ROUGE_LIB = ROOT.join('lib/rouge.rb')
DEMOS = ROOT.join('lib/rouge/demos')
def reload_source!
Rouge.reload!
end
def query_string
env['rack.request.query_string']
end
# Invoke a specific formatter based on what one intends to test
def setup_formatter(params)
# parameters disabled by default
inline = as_boolean params.fetch(:inline, false)
line_numbers = as_boolean params.fetch(:line_numbers, false)
# parameters enabled by default
wrapped = as_boolean params.fetch(:wrap, true)
line_table = as_boolean params.fetch(:line_table, true)
# base HTML formatter
formatter = inline ?
Rouge::Formatters::HTMLInline.new(@theme) :
Rouge::Formatters::HTML.new
if line_numbers
formatter = line_table ?
Rouge::Formatters::HTMLLineTable.new(formatter) :
Rouge::Formatters::HTMLTable.new(formatter)
end
return Rouge::Formatters::HTMLPygments.new(formatter) if wrapped
formatter
end
def as_boolean(value)
case value
when nil, false, 0, '0', 'false', 'off', 'disabled', ''
false
else
true
end
end
configure do
set :root, BASE
set :views, BASE.join('templates')
end
before do
reload_source!
Rouge::Lexer.enable_debug!
Rouge::Formatter.enable_escape! if params[:escape]
theme_class = Rouge::Theme.find(params[:theme] || 'thankful_eyes')
halt 404 unless theme_class
@theme = theme_class.new(scope: '.codehilite')
@comment_color = theme_class.get_style(Rouge::Token::Tokens::Comment).fg
@formatter = setup_formatter(params)
end
get '/:lexer' do |lexer_name|
@lexer = Rouge::Lexer.find_fancy("#{lexer_name}?#{query_string}")
halt 404 unless @lexer
@sample = File.read(SAMPLES.join(@lexer.class.tag), encoding: 'utf-8')
@title = "#{@lexer.class.tag} | Visual Test"
@raw = Rouge.highlight(@sample, 'plaintext', @formatter)
@highlighted = Rouge.highlight(@sample, @lexer, @formatter)
template = params[:juxtaposed] ? :lexer_juxtaposed : :lexer
erb template
end
get '/' do
@samples = DEMOS.entries.sort.reject { |s| s.basename.to_s =~ /^\.|~$/ }
@samples.map!(&Rouge::Lexer.method(:find))
erb :index
end
end
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