Need Macro/JavaScript to Extract Contents of Code Block

Questions & Suggestions
,
11

While we are in mid-August optimisation and tweaking territory, glancing again at my JS code I notice a few things that could be adjusted or tightened up.

  1. If we're only looking for one match, no need to heat the CPU in boreal summer by searching for more. Instead of leaving it to the default XPathResult.ANY_TYPE and using .iterateNext() to collect just the first (if any) match, we can look up the Result Type constants, specify XPathResult.FIRST_ORDERED_NODE_TYPE, and collect any match with .singleNodeValue().
  2. XPATH expressions are chains of alternating 'Steps' and 'Filters'. We can broaden out the filter here with as many 'or' operators as we need. The simplest example might be: ./ancestor-or-self::*[self::code or self::pre]
  3. We can include text collection inside the function with return oSeln.toString().

(and then perhaps, drop it into an Execute JS in Safari (and/or Chrome) action, directing the output to the clipboard).

Select and copy code.kmmacros (19.2 KB)

(function () {
  var oSeln = window.getSelection(),
    nodeCode = document.evaluate(
      './ancestor-or-self::*[self::code or self::pre]',
      oSeln.anchorNode,
      null, XPathResult.FIRST_ORDERED_NODE_TYPE, 0
    ).singleNodeValue,
    rngDoc = nodeCode ?
      document.createRange() : null;

  if (nodeCode) {
    oSeln.removeAllRanges();
    rngDoc.selectNode(nodeCode);
    oSeln.addRange(rngDoc);
  }
  
  return oSeln.toString();
})();