vimhl.js

// Generated by CoffeeScript 2.7.0
(function() {
  // File: vimhl.coffee
  // Date: Thu May 28 18:23:18 2015 +0800
  var cheerio, crypto, exec, formatFilter, fs, temp, util, vimHighlight, wrench;

  util = require('util');

  exec = util.promisify(require('child_process').exec);

  fs = require('fs');

  temp = require('temp').track();

  cheerio = require('cheerio');

  crypto = require('crypto');

  wrench = require('wrench');

  formatFilter = function(data) {
    // trim the extra empty line
    data = data.trim();
    data = data.replace('\n', '');
    // delete the extra line break between code
    data = data.replace(/<br>/gi, '');
    // replace dark color with lighter one
    data = data.replace(/#0000c0/gi, '#2277cc');
    data = data.replace(/#af5f00/gi, '#d5e617');
    data = data.replace(/#008080/gi, '#0edbcb');
    data = data.replace(/#008000/gi, '#00c000');
    data = data.replace(/#804000/gi, '#d5e617');
    data = data.replace(/#c00000/gi, '#ff4040');
    // https://stackoverflow.com/questions/2083754/why-shouldnt-apos-be-used-to-escape-single-quotes
    data = data.replace(/&apos;/gi, '&#27;');
    return data;
  };

  vimHighlight = async function(data, ft, useLineN, cacheDir) {
    var $, cacheFileHash, cacheFileName, htmlPath, info, lineOpt, opt, result, ret;
    cacheFileHash = crypto.createHash('md5');
    cacheFileHash.update(data);
    cacheFileHash.update(ft);
    if (useLineN) {
      cacheFileHash.update("show line numbers");
    } else {
      cacheFileHash.update("no line numbers");
    }
    cacheFileName = cacheFileHash.digest('hex') + '.html';
    if (!fs.existsSync(cacheDir)) {
      wrench.mkdirSyncRecursive(cacheDir, '0777');
    }
    if (!fs.existsSync(cacheDir + '/' + cacheFileName)) {
      if (useLineN) {
        lineOpt = ' +"let g:html_number_lines=1" ';
      } else {
        lineOpt = ' +"let g:html_number_lines=0" ';
      }
      info = (await temp.open({
        suffix: '.' + ft
      }));
      await fs.promises.writeFile(info.path, data);
      // https://bitbucket.org/fritzophrenic/vim-tohtml/issues/25/cannot-recognize-urls-with-ip-address
      opt = '+"let g:html_no_progress=1" +"let g:html_ignore_folding=1" +"let g:html_use_css=0" +"let g:html_pre_wrap=0" +"hi clear Constant"' + lineOpt;
      await exec('vim -X -i NONE -f ' + opt + ' +"TOhtml" -ncwqa ' + info.path + ' > /dev/null 2>&1');
      htmlPath = info.path + '.html';
      result = (await fs.promises.readFile(htmlPath));
      result = String(result);
      fs.unlink(htmlPath, function(err) {});
      fs.unlink(info.path, function(err) {});
      $ = cheerio.load(result);
      ret = $('body');
      ret = formatFilter(ret.html());
      await fs.promises.writeFile(cacheDir + '/' + cacheFileName, ret);
    } else {
      result = (await fs.promises.readFile(cacheDir + '/' + cacheFileName));
      ret = String(result);
    }
    return ret;
  };

  exports.vimHighlight = vimHighlight;

}).call(this);