Class: Gollum::Filter::Code
- Inherits:
-
Gollum::Filter
- Object
- Gollum::Filter
- Gollum::Filter::Code
- Defined in:
- lib/gollum-lib/filter/code.rb
Overview
Code
Render a block of code using the Rouge syntax-highlighter.
Constant Summary
Constants inherited from Gollum::Filter
Instance Attribute Summary
Attributes inherited from Gollum::Filter
Instance Method Summary collapse
- #extract(data) ⇒ Object
-
#process(data) ⇒ Object
Process all code from the codemap and replace the placeholders with the final HTML.
Methods inherited from Gollum::Filter
Methods included from Helpers
#path_to_link_text, #trim_leading_slashes
Constructor Details
This class inherits a constructor from Gollum::Filter
Instance Method Details
#extract(data) ⇒ Object
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 |
# File 'lib/gollum-lib/filter/code.rb', line 7 def extract(data) case @markup.format when :asciidoc data.gsub!(/^(\[source,([^\r\n]*)\]\n)?----\n(.+?)\n----$/m) do cache_codeblock(Regexp.last_match[2], Regexp.last_match[3]) end when :org org_headers = %r{([ \t]*#\+HEADER[S]?:[^\r\n]*\n)*} org_name = %r{([ \t]*#\+NAME:[^\r\n]*\n)?} org_lang = %r{[ ]*([^\n \r]*)[ ]*[^\r\n]*} org_begin = %r{([ \t]*)#\+BEGIN_SRC#{org_lang}\r?\n} org_end = %r{\r?\n[ \t]*#\+END_SRC[ \t\r]*} data.gsub!(/^#{org_headers}#{org_name}#{org_begin}(.+?)#{org_end}$/mi) do "#{Regexp.last_match[3]}#{cache_codeblock(Regexp.last_match[4], Regexp.last_match[5])}" end when :markdown data.gsub!(/^([ ]{0,3})(~~~+) ?([^\r\n]+)?\r?\n(.+?)\r?\n[ ]{0,3}(~~~+)[ \t\r]*$/m) do m_indent = Regexp.last_match[1] m_start = Regexp.last_match[2] # ~~~ m_lang = Regexp.last_match[3] m_code = Regexp.last_match[4] m_end = Regexp.last_match[5] # ~~~ # The closing code fence must be at least as long as the opening fence next '' if m_end.length < m_start.length lang = m_lang ? m_lang.strip.split.first : nil "#{m_indent}#{cache_codeblock(lang, m_code, m_indent)}" end end data.gsub!(/^([ ]{0,3})``` ?([^\r\n]+)?\r?\n(.+?)\r?\n[ ]{0,3}```[ \t]*\r?$/m) do "#{Regexp.last_match[1]}#{cache_codeblock(Regexp.last_match[2].to_s.strip, Regexp.last_match[3], Regexp.last_match[1])}" # print the SHA1 ID with the proper indentation end data end |
#process(data) ⇒ Object
Process all code from the codemap and replace the placeholders with the final HTML.
data - The String data (with placeholders). encoding - Encoding Constant or String.
Returns the marked up String data.
50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 |
# File 'lib/gollum-lib/filter/code.rb', line 50 def process(data) return data if data.nil? || data.size.zero? || @map.size.zero? blocks = [] @map.each do |_id, spec| next if spec[:output] # cached code = spec[:code] remove_leading_space(code, /^#{spec[:indent]}/m) remove_leading_space(code, /^( |\t)/m) blocks << [spec[:lang], code] end highlighted = [] blocks.each do |lang, code| encoding = @markup.encoding || 'utf-8' if defined? Pygments # Set the default lexer to 'text' to prevent #153 and #154 lang = lang || 'text' lexer = Pygments::Lexer[(lang)] || Pygments::Lexer['text'] # must set startinline to true for php to be highlighted without <? hl_code = lexer.highlight(code, :options => { :encoding => encoding.to_s, :startinline => true }) else # Rouge begin # if `lang` was not defined then assume plaintext lexer = Rouge::Lexer.find_fancy(lang || 'plaintext') formatter = Rouge::Formatters::HTML.new wrap_template = '<pre class="highlight"><code>%s</code></pre>' # if `lang` is defined but cannot be found then wrap it with an error if lexer.nil? lexer = Rouge::Lexers::PlainText wrap_template = '<pre class="highlight"><span class="err">%s</span></pre>' end formatted = formatter.format(lexer.lex(code)) hl_code = Kernel.sprintf(wrap_template, formatted) rescue hl_code = code end end highlighted << hl_code end @map.each do |id, spec| body = spec[:output] || begin if (body = highlighted.shift.to_s).size > 0 @markup.update_cache(:code, id, body) body else "<pre><code>#{CGI.escapeHTML(spec[:code])}</code></pre>" end end # Removes paragraph tags surrounding <pre> blocks, see issue https://github.com/gollum/gollum-lib/issues/97 data.gsub!(/(<p>#{id}<\/p>|#{id})/) { body } end data end |