htmlprocessor-prepend/lib/utils.js

Process html file using special comments

/*
 * node-htmlprocessor
 * https://github.com/dciccale/node-htmlprocessor
 *
 * Copyright (c) 2013-2014 Denis Ciccale (@tdecs)
 * Licensed under the MIT license.
 * https://github.com/dciccale/node-htmlprocessor/blob/master/LICENSE-MIT
 */

'use strict';

var path = require('path');
var fs = require('fs');
var _ = require('lodash');

var utils = module.exports = {};

var escapeRegExp = function (str) {
  return str.replace(/([.?*+\^=!:$\[\]\\(){}|\-])/g, '\\$1');
};

utils.blockToRegExp = function (blockLine) {
  var escaped = escapeRegExp(blockLine);
  return new RegExp(escaped.replace(/^\s*|[\r\n]+\s*/g, '\\s*').replace(/\n{1}$/g, '\\n'));
};

utils.read = function (filepath, encoding) {
  var contents;
  if (encoding === null) {
    contents = fs.readFileSync(filepath);
  } else {
    contents = fs.readFileSync(filepath, 'utf-8');
  }
  return contents;
};

utils.exists = function (filepath) {
  return filepath && fs.existsSync(filepath);
};

// cortesy of grunt
utils.mkdir = function (dirpath, mode) {
  // Set directory mode in a strict-mode-friendly way.
  if (mode == null) {
    mode = parseInt('0777', 8) & (~process.umask());
  }
  dirpath.split(/[\/\\]/g).reduce(function(parts, part) {
    parts += part + '/';
    var subpath = path.resolve(parts);
    if (!utils.exists(subpath)) {
      try {
        fs.mkdirSync(subpath, mode);
      } catch (e) {
        throw util.error('Unable to create directory "' + subpath + '" (Error code: ' + e.code + ').', e);
      }
    }
    return parts;
  }, '');
};

utils._ = _;