function parseNode()

in scripts/build.js [365:437]
68 lines of code
13 McCabe index (conditional complexity)

      function parseNode(node, options) {
        var
          allText = grabAllTextNodes(node, []),
          length = allText.length,
          attrib,
          attrname,
          modified,
          fragment,
          subnode,
          text,
          match,
          i,
          index,
          img,
          rawText,
          iconId,
          src;
        while (length--) {
          modified = false;
          fragment = document.createDocumentFragment();
          subnode = allText[length];
          text = subnode.nodeValue;
          i = 0;
          while ((match = re.exec(text))) {
            index = match.index;
            if (index !== i) {
              fragment.appendChild(
                createText(text.slice(i, index), true)
              );
            }
            rawText = match[0];
            iconId = grabTheRightIcon(rawText);
            i = index + rawText.length;
            src = options.callback(iconId, options);
            if (iconId && src) {
              img = new Image();
              img.onerror = options.onerror;
              img.setAttribute('draggable', 'false');
              attrib = options.attributes(rawText, iconId);
              for (attrname in attrib) {
                if (
                  attrib.hasOwnProperty(attrname) &&
                  // don't allow any handlers to be set + don't allow overrides
                  attrname.indexOf('on') !== 0 &&
                  !img.hasAttribute(attrname)
                ) {
                  img.setAttribute(attrname, attrib[attrname]);
                }
              }
              img.className = options.className;
              img.alt = rawText;
              img.src = src;
              modified = true;
              fragment.appendChild(img);
            }
            if (!img) fragment.appendChild(createText(rawText, false));
            img = null;
          }
          // is there actually anything to replace in here ?
          if (modified) {
            // any text left to be added ?
            if (i < text.length) {
              fragment.appendChild(
                createText(text.slice(i), true)
              );
            }
            // replace the text node only, leave intact
            // anything else surrounding such text
            subnode.parentNode.replaceChild(fragment, subnode);
          }
        }
        return node;
      }