hexo/lib/plugins/tag/code.js

A fast, simple & powerful blog framework, powered by Node.js.

// Based on: https://raw.github.com/imathis/octopress/master/plugins/code_block.rb

var util = require('../../util'),
  highlight = util.highlight;

var rCaptionUrlTitle = /(\S[\S\s]*)\s+(https?:\/\/)(\S+)\s+(.+)/i,
  rCaptionUrl = /(\S[\S\s]*)\s+(https?:\/\/)(\S+)/i,
  rCaption = /(\S[\S\s]*)/,
  rLang = /\s*lang:(\w+)/i;

/**
* Code block tag
*
* Syntax:
*   {% codeblock [title] [lang:language] [url] [link text] %}
*   code snippet
*   {% endcodeblock %}
*/

module.exports = function(args, content){
  var arg = args.join(' '),
    config = hexo.config.highlight || {},
    caption = '',
    lang = '',
    match;

  if (rLang.test(arg)){
    lang = arg.match(rLang)[1];
    arg = arg.replace(/lang:\w+/i, '');
  }

  if (rCaptionUrlTitle.test(arg)){
    match = arg.match(rCaptionUrlTitle);
    caption = '<span>' + match[1] + '</span><a href="' + match[2] + match[3] + '">' + match[4] + '</a>';
  } else if (rCaptionUrl.test(arg)){
    match = arg.match(rCaptionUrl);
    caption = '<span>' + match[1] + '</span><a href="' + match[2] + match[3] + '">link</a>';
  } else if (rCaption.test(arg)){
    match = arg.match(rCaption);
    caption = '<span>' + match[1] + '</span>';
  }

  return highlight(content, {
    lang: lang,
    caption: caption,
    gutter: config.line_number,
    tab: config.tab_replace
  });
};