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|
begin
require "linguist"
rescue LoadError
# Rely on extensions instead.
end
require "github/markup/command_implementation"
require "github/markup/gem_implementation"
module GitHub
module Markups
# all of supported markups:
MARKUP_ASCIIDOC = :asciidoc
MARKUP_CREOLE = :creole
MARKUP_MARKDOWN = :markdown
MARKUP_MEDIAWIKI = :mediawiki
MARKUP_ORG = :org
MARKUP_POD = :pod
MARKUP_RDOC = :rdoc
MARKUP_RST = :rst
MARKUP_TEXTILE = :textile
end
module Markup
extend self
@@markups = {}
def markups
@@markups
end
def markup_impls
markups.values
end
def preload!
markup_impls.each do |markup|
markup.load
end
end
def render(filename, content = nil, symlink = nil)
content ||= File.read(filename)
symlink = (File.symlink?(filename) rescue false) if symlink.nil?
if impl = renderer(filename, content, symlink)
impl.render(filename, content)
else
content
end
end
def render_s(symbol, content)
if content.nil?
raise ArgumentError, 'Can not render a nil.'
elsif markups.has_key?(symbol)
markups[symbol].render(nil, content)
else
content
end
end
def markup(symbol, gem_name, regexp, languages, opts = {}, &block)
markup_impl(symbol, GemImplementation.new(regexp, languages, gem_name, &block))
end
def markup_impl(symbol, impl)
if markups.has_key?(symbol)
raise ArgumentError, "The '#{symbol}' symbol is already defined."
end
markups[symbol] = impl
end
def command(symbol, command, regexp, languages, name, &block)
if File.exist?(file = File.dirname(__FILE__) + "/commands/#{command}")
command = file
end
markup_impl(symbol, CommandImplementation.new(regexp, languages, command, name, &block))
end
def can_render?(filename, content, symlink = false)
!!renderer(filename, content, symlink)
end
def renderer(filename, content, symlink = false)
language = language(filename, content, symlink)
markup_impls.find { |impl|
impl.match?(filename, language)
}
end
def language(filename, content, symlink = false)
if defined?(::Linguist)
blob = Linguist::Blob.new(filename, content, symlink: symlink)
return Linguist.detect(blob, allow_empty: true)
end
end
# Define markups
markups_rb = File.dirname(__FILE__) + '/markups.rb'
instance_eval File.read(markups_rb), markups_rb
end
end
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