md2hatena/lib/nodeToHatena.js

Markdown to Hatena Syntax converter

'use strict';

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

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

exports.default = nodeToHatena;

var _joinNodes = require('./joinNodes');

var _joinNodes2 = _interopRequireDefault(_joinNodes);

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

var converter = {
  root: function root(node, opts) {
    return (0, _joinNodes2.default)(node.children, node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }));
  },
  heading: function heading(node, opts) {
    return '**********'.slice(0, node.depth) + ' ' + node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('');
  },
  text: function text(node) {
    return node.value;
  },
  paragraph: function paragraph(node, opts) {
    return (0, _joinNodes2.default)(node.children, node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }));
  },
  inlineCode: function inlineCode(node) {
    return '<code>' + node.value + '</code>';
  },
  html: function html(node) {
    return node.value;
  },
  thematicBreak: function thematicBreak() {
    return '<hr>';
  },
  link: function link(node, opts) {
    var title = node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('');
    var suffix = title.match(/\S+/) ? ':title=' + title : ':title';
    return '[' + node.url + suffix + ']';
  },
  list: function list(node, opts) {
    var level = opts.level || 0;
    return node.children.map(function (n) {
      return nodeToHatena(n, _extends({}, opts, { level: level + 1 }));
    }).join('\n');
  },
  listItem: function listItem(node, opts) {
    var level = opts.level || 0;
    return '----------'.slice(0, level) + ' ' + node.children.map(function (n) {
      var h = nodeToHatena(n, _extends({}, opts, { level: level }));
      return n.type === 'list' ? '\n' + h : h;
    }).join('');
  },
  table: function table(node, opts) {
    return nodeToHatena(node.children[0], { prefix: '*' }) + '\n' + node.children.slice(1).map(function (n) {
      return nodeToHatena(n, opts);
    }).join('\n');
  },
  tableRow: function tableRow(node, opts) {
    return '| ' + node.children.map(function (n) {
      return (opts.prefix || '') + nodeToHatena(n, opts);
    }).join(' | ') + ' |';
  },
  tableCell: function tableCell(node, opts) {
    return node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('');
  },
  code: function code(node) {
    return '>|' + (node.lang || '') + '|\n' + node.value + '\n||<';
  },
  blockquote: function blockquote(node, opts) {
    return '>>\n' + (0, _joinNodes2.default)(node.children, node.children.map(function (n) {
      return nodeToHatena(n, opts);
    })) + '\n<<';
  },
  yaml: function yaml(node) {
    return '>|yaml|\n---\n' + node.value + '\n---\n||<';
  },
  break: function _break() {
    return '\n';
  },
  emphasis: function emphasis(node, opts) {
    return '<em>' + node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('') + '</em>';
  },
  strong: function strong(node, opts) {
    return '<strong>' + node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('') + '</strong>';
  },
  delete: function _delete(node, opts) {
    return '<del>' + node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('') + '</del>';
  },
  image: function image(node) {
    if (node.alt && node.title) {
      return '<img src="' + node.url + '" alt="' + node.alt + '" title="' + node.title + '"/>';
    }
    if (node.alt) {
      return '<img src="' + node.url + '" alt="' + node.alt + '"/>';
    }
    if (node.title) {
      return '<img src="' + node.url + '" title="' + node.title + '"/>';
    }
    return '[' + node.url + ':image]';
  },
  footnote: function footnote(node, opts) {
    return '((' + node.children.map(function (n) {
      return nodeToHatena(n, opts);
    }).join('') + '))';
  },
  footnoteDefinition: function footnoteDefinition() {
    return '';
  },
  footnoteReference: function footnoteReference(node, opts) {
    if (!opts.footnoteDefinition) {
      return '';
    }

    var def = opts.footnoteDefinition[node.identifier];
    if (def) {
      var body = def.children.map(function (n) {
        return nodeToHatena(n, opts);
      }).join('');
      return '((' + body + '))';
    }
    return '';
  },
  definition: function definition() {
    return '';
  },
  linkReference: function linkReference(node, opts) {
    if (!opts.definition || !opts.definition[node.identifier]) {
      return '';
    }

    var def = opts.definition[node.identifier];
    if (node.referenceType === 'full') {
      return '[' + def + ':title=' + node.children.map(function (n) {
        return nodeToHatena(n, opts);
      }).join('') + ']';
    }
    return '[' + def + ']';
  },
  imageReference: function imageReference(node, opts) {
    if (!opts.definition || !opts.definition[node.identifier]) {
      return '';
    }

    var def = opts.definition[node.identifier];
    if (node.referenceType === 'full') {
      return '<img src="' + def + '" alt="' + node.alt + '"/>';
    }
    return '[' + def + ':image]';
  }
};

function nodeToHatena(node) {
  var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  if (converter[node.type]) {
    return converter[node.type](node, opts);
  }

  return node.value || '';
}