index.js

// Process ![test]( x =100x200)
//                    ^^^^^^^^ this size specification

'use strict';

var parseImageSize = require('./helpers/parse_image_size');
var normalizeReference = require('./helpers/normalize_reference.js');

function image_with_size(md) {
  return function(state, silent) {
    var code,
        href,
        label,
        labelEnd,
        labelStart,
        pos,
        ref,
        res,
        title,
        width = '',
        height = '',
        tokens,
        start,
        oldPos = state.pos,
        max = state.posMax;

    if (state.src.charCodeAt(state.pos) !== 0x21/* ! */) { return false; }
    if (state.src.charCodeAt(state.pos + 1) !== 0x5B/* [ */) { return false; }

    labelStart = state.pos + 2;
    labelEnd = md.helpers.parseLinkLabel(state, state.pos + 1, false);

    // parser failed to find ']', so it's not a valid link
    if (labelEnd < 0) { return false; }

    pos = labelEnd + 1;
    if (pos < max && state.src.charCodeAt(pos) === 0x28/* ( */) {

      //
      // Inline link
      //

      // [link](  <href>  "title"  )
      //        ^^ skipping these spaces
      pos++;
      for (; pos < max; pos++) {
        code = state.src.charCodeAt(pos);
        if (code !== 0x20 && code !== 0x0A) { break; }
      }
      if (pos >= max) { return false; }

      // [link](  <href>  "title"  )
      //          ^^^^^^ parsing link destination
      start = pos;
      res = md.helpers.parseLinkDestination(state.src, pos, state.posMax);
      if (res.ok && state.md.inline.validateLink(res.str)) {
        href = res.str;
        pos = res.pos;
      } else {
        href = '';
      }

      // [link](  <href>  "title"  )
      //                ^^ skipping these spaces
      start = pos;
      for (; pos < max; pos++) {
        code = state.src.charCodeAt(pos);
        if (code !== 0x20 && code !== 0x0A) { break; }
      }