js-markdown/lib/syntax/block/SetextHeader.js

A markdown language js compiler.

/**
 * match a series of headers of setext format
 *
 * syntax like this:
 *
 *  header 1 ( <h1></h1> )
 *  ======================
 *
 * or
 *
 *  header 2 ( <h2></h2> )
 *  ----------------------
 *
 */
'use strict';

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _Valid = _interopRequireDefault(require("../../utils/Valid"));

var _Header = _interopRequireDefault(require("../../utils/Header"));

function parse(line, index, lines, renderTree) {
  // blank line or last line
  if (_Valid["default"].isBlank(line) || index >= lines.length - 1) {
    return;
  }

  var nextLine = lines[index + 1],
      result = nextLine.match(/^([-=])\1\1+(?:\n|$)/);

  if (!result) {
    return;
  }

  return [{
    type: 'SetextHeader',
    level: result[1] === '=' ? 1 : 2,
    rawValue: line
  }, index + 1];
}

function render() {
  var data = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
  var node = arguments.length > 1 ? arguments[1] : undefined;
  var renderTree = arguments.length > 2 ? arguments[2] : undefined;
  var level = node.level,
      innerHtml = "".concat(node.rawValue || '').concat(data);

  if (renderTree) {
    if (!renderTree.headerTree) {
      renderTree.headerTree = _Header["default"].initRoot();
    }

    _Header["default"].addHeaderNode(renderTree.headerTree, level, innerHtml);
  }

  return "<h".concat(level, "><a id=\"").concat(innerHtml, "\" href=\"#").concat(innerHtml, "\"></a>").concat(innerHtml, "</h").concat(level, ">");
}

var _default = {
  parse: parse,
  render: render
};
exports["default"] = _default;