front-matter-markdown/lib/markdown/ast-headings-to-file-object.js

get the config and toc object from the markdown string.

(function() {
  var AstHeadingsToFileObject, isArray, isString;

  isArray = require('util-ex/lib/is/type/array');

  isString = require('util-ex/lib/is/type/string');

  module.exports = AstHeadingsToFileObject = (function() {
    var textToObject;

    function AstHeadingsToFileObject(nodes) {
      var contents, lastObj, level, parents, result;
      contents = [];
      result = {
        contents: contents
      };
      level = nodes[0].level;
      lastObj = null;
      parents = [result];
      nodes.forEach(function(node, i) {
        var obj, parent;
        obj = textToObject(node);
        if (node.level > level) {
          contents = lastObj.contents = [];
          parents.push(lastObj);
          level = node.level;
        } else if (node.level < level) {
          parent = parents.pop() || result;
          contents = parent.contents;
          level = node.level;
        }
        contents.push(obj);
        return lastObj = obj;
      });
      if (!result.contents.length) {
        result = null;
      }
      return result;
    }

    AstHeadingsToFileObject.textToObject = textToObject = function(textNode) {
      var result;
      result = {};
      if (isString(textNode.text)) {
        result.title = textNode.text;
      } else if (!isArray(textNode.text)) {
        textNode = textNode.text;
        if (textNode.type === 'link') {
          result.title = textNode.text;
          result.path = textNode.href;
          if (textNode.title) {
            result.hint = textNode.title;
          }
        } else {
          result.title = textNode;
        }
      } else {
        result.title = [];
        textNode.text.forEach(function(n) {
          if (n.type === 'link') {
            result.title.push(n.text);
            result.path = n.href;
            if (n.title) {
              return result.hint = n.title;
            }
          } else {
            return result.title.push(n);
          }
        });
      }
      return result;
    };

    return AstHeadingsToFileObject;

  })();

}).call(this);

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