mirror of
https://github.com/twbs/bootstrap.git
synced 2025-10-31 00:04:27 -04:00
86 lines
2.7 KiB
Ruby
86 lines
2.7 KiB
Ruby
module Jekyll
|
|
module Tags
|
|
class ExampleBlock < Liquid::Block
|
|
include Liquid::StandardFilters
|
|
|
|
# The regular expression syntax checker. Start with the language specifier.
|
|
# Follow that by zero or more space separated options that take one of three
|
|
# forms: name, name=value, or name="<quoted list>"
|
|
#
|
|
# <quoted list> is a space-separated list of numbers
|
|
SYNTAX = /^([a-zA-Z0-9.+#-]+)((\s+\w+(=((\w|[0-9_-])+|"([0-9]+\s)*[0-9]+"))?)*)$/
|
|
|
|
def initialize(tag_name, markup, tokens)
|
|
super
|
|
if markup.strip =~ SYNTAX
|
|
@lang = $1.downcase
|
|
@options = {}
|
|
if defined?($2) && $2 != ''
|
|
# Split along 3 possible forms -- key="<quoted list>", key=value, or key
|
|
$2.scan(/(?:\w+(?:=(?:(?:\w|[0-9_-])+|"[^"]*")?)?)/) do |opt|
|
|
key, value = opt.split('=')
|
|
# If a quoted list, convert to array
|
|
if value && value.include?("\"")
|
|
value.gsub!(/"/, "")
|
|
value = value.split
|
|
end
|
|
@options[key.to_sym] = value || true
|
|
end
|
|
end
|
|
@options[:linenos] = false
|
|
else
|
|
raise SyntaxError.new <<-eos
|
|
Syntax Error in tag 'example' while parsing the following markup:
|
|
|
|
#{markup}
|
|
|
|
Valid syntax: example <lang>
|
|
eos
|
|
end
|
|
end
|
|
|
|
def render(context)
|
|
prefix = context["highlighter_prefix"] || ""
|
|
suffix = context["highlighter_suffix"] || ""
|
|
code = super.to_s.strip
|
|
|
|
output = case context.registers[:site].highlighter
|
|
|
|
when 'rouge'
|
|
render_rouge(code)
|
|
end
|
|
|
|
rendered_output = example(code) + add_code_tag(output)
|
|
prefix + rendered_output + suffix
|
|
end
|
|
|
|
def example(output)
|
|
"<div class=\"bd-example\" data-example-id=\"#{@options[:id]}\">\n#{output}\n</div>"
|
|
end
|
|
|
|
def remove_holderjs(code)
|
|
code = code.gsub(/data-src="holder.js.+?"/, 'src="..."')
|
|
end
|
|
|
|
def render_rouge(code)
|
|
require 'rouge'
|
|
formatter = Rouge::Formatters::HTML.new(line_numbers: @options[:linenos], wrap: false)
|
|
lexer = Rouge::Lexer.find_fancy(@lang, code) || Rouge::Lexers::PlainText
|
|
code = remove_holderjs(code)
|
|
code = formatter.format(lexer.lex(code))
|
|
"<div class=\"highlight\"><pre>#{code}</pre></div>"
|
|
end
|
|
|
|
def add_code_tag(code)
|
|
# Add nested <code> tags to code blocks
|
|
code = code.sub(/<pre>\n*/,'<pre><code class="language-' + @lang.to_s.gsub("+", "-") + '" data-lang="' + @lang.to_s + '">')
|
|
code = code.sub(/\n*<\/pre>/,"</code></pre>")
|
|
code.strip
|
|
end
|
|
|
|
end
|
|
end
|
|
end
|
|
|
|
Liquid::Template.register_tag('example', Jekyll::Tags::ExampleBlock)
|