html-to-article-json/dist/parse/index.js

Converting HTML to article-json

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _es6Set = require('es6-set');

var _es6Set2 = _interopRequireDefault(_es6Set);

var _embeds = require('./embeds');

var _embeds2 = _interopRequireDefault(_embeds);

var _text = require('./text');

var _text2 = _interopRequireDefault(_text);

var _blockElement = require('./block-element');

var _blockElement2 = _interopRequireDefault(_blockElement);

var _queryDom = require('query-dom');

var _queryDom2 = _interopRequireDefault(_queryDom);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var HEAD_NODE_NAMES = new _es6Set2.default(['title', 'base', 'link', 'meta', 'script', 'noscript', 'style']);

var linebreak = function linebreak(elm) {
  return elm.tagName.toLowerCase() === 'br' ? { type: 'linebreak' } : null;
};

var isEmptyTextNode = function isEmptyTextNode(elm) {
  return elm.nodeName === '#text' && elm.data.length === 0;
};

exports.default = function (opts) {
  var text = (0, _text2.default)(opts);
  var embed = (0, _embeds2.default)(opts);

  var parse = function parse(elms, textOpts, result) {
    for (var i = 0; i < elms.length; i++) {
      var elm = elms[i];

      // ELEMENT_NODE
      if (elm.tagName && !HEAD_NODE_NAMES.has(elm.tagName.toLowerCase())) {
        elementNode(elm, textOpts, result);
      }

      // TEXT_NODE
      if (elm.nodeName === '#text' && elm.data.length > 0) {
        result.push(text(textOpts, elm));
      }
    }
    return result;
  };

  var blockElement = (0, _blockElement2.default)(parse, text);

  var elementNode = function elementNode(elm, textOpts, result) {
    var linebreakResult = linebreak(elm);
    if (linebreakResult) {
      result.push(linebreakResult);
      return;
    }

    var embedResult = embed(elm);
    if (embedResult) {
      result.push(embedResult);
      return;
    }

    var blockElementResult = blockElement(elm, textOpts);
    if (blockElementResult) {
      result.push(blockElementResult);
      return;
    }

    var emptyMark = elm.tagName.toLowerCase() === 'mark' && (elm.childNodes.length === 0 || elm.childNodes.length === 1 && isEmptyTextNode(elm.childNodes[0]));
    if (emptyMark) {
      result.push(text(textOpts, elm));
      return;
    }

    if (elm.childNodes.length) {
      parse(elm.childNodes, text(textOpts, elm), result);
    }
  };

  return function (input) {
    if (typeof input === 'string') {
      return parse((0, _queryDom2.default)(input), {}, []);
    }

    if (input.nodeName) {
      return parse([input], {}, []);
    }

    return parse(input, {}, []);
  };
};