<!DOCTYPE html>
<html>   <!-- DOESN'T WORK, NOT SURE WHY - THERE ARE 11 CHARACTERS PRODUCED, BUT ALL ARE UNASSIGNED CODE POINTS, SO SAFE TO IGNORE FOR NOW -->
<head>
<title>EUC-KR encoding errors (form, hangul)</title>
<meta charset="euc-kr"> <!-- test breaks if the server overrides this -->
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="euckr_index.js"></script>
<link rel="author" title="Richard Ishida" href="mailto:ishida@w3.org">
<link rel="help" href="https://encoding.spec.whatwg.org/#euc-kr">
<meta name="assert" content="The browser produces percent-escaped character references when encoding bytes for a URL produced by a form when encoding hangul characters that are not in the euc-kr encoding.">
<style>
 iframe { display:none }
 form { display:none }
</style>
</head>
<body>
<div id="log"></div>
<script>
var tests = [];
var cplist = [];
var numTests = null;
var numFrames = 2;
var chunkSize = 400;
var numChunks = null;
var frames = null;
var frames = null;
var forms = null;
var seperator = ",";
var encodedSeperator = encodeURIComponent(",");
var currentChunkIndex = 0;

function getByteSequence(cp) {
  // uses the Encoding spec algorithm to derive a sequence of bytes for a character that can be encoded
  // the result is either a percent-encoded value or null (if the character can't be encoded)
  // cp: integer, a code point number
  var cps = [cp];
  var out = "";

  while (cps.length > 0) {
    cp = cps.shift();
    if (cp >= 0x00 && cp <= 0x7f) {
      // ASCII
      out += "%" + cp.toString(16);
      continue;
    }
    var ptr = indexcodepoints[cp];
    if (ptr == null) {
      return null;
    }
    var lead = Math.floor(ptr / 190) + 0x81;
    var trail = ptr % 190 + 0x41;
    out +=
      "%" +
      lead.toString(16).toUpperCase() +
      "%" +
      trail.toString(16).toUpperCase();
  }
  return out;
}

// set up a sparse array of all unicode codepoints listed in the index
// this will be used for lookup in getByteSequence
var indexcodepoints = []; // index is unicode cp, value is pointer
for (p = 0; p < euckr.length; p++) {
  if (euckr[p] != null && indexcodepoints[euckr[p]] == null) {
    indexcodepoints[euckr[p]] = p;
  }
}

setup(function() {
  // set up a simple array of all unicode codepoints that are not encoded
  var codepoints = [];

  for (i = 0xac00; i < 0xd7af; i++) {
    result = getByteSequence(i);
    if (!result) {
      var item = {};
      codepoints.push(item);
      item.cp = i;
      item.expected = "%26%23" + item.cp + "%3B";
      item.desc = "hangul ";
    }
  }

  // convert the information into a simple array of objects that can be easily traversed
  var currentChunk = [];
  var currentTests = [];
  cplist = [currentChunk];
  tests = [currentTests];
  for (i = 161; i < codepoints.length; i++) {
    if (currentChunk.length == chunkSize) {
      currentChunk = [];
      cplist.push(currentChunk);
      currentTests = [];
      tests.push(currentTests);
    }
    var item = {};
    currentChunk.push(item);
    item.cp = codepoints[i].cp;
    item.expected = codepoints[i].expected;
    item.desc = codepoints[i].desc;
    currentTests.push(
      async_test(
        item.desc +
          " U+" +
          item.cp.toString(16).toUpperCase() +
          " " +
          String.fromCodePoint(item.cp) +
          item.expected
      )
    );
  }

  numChunks = cplist.length;

  for (var i = 0; i < numFrames; i++) {
    var frame = document.createElement("iframe");
    frame.id = frame.name = "frame-" + i;
    document.body.appendChild(frame);
    var form = document.createElement("form");
    form.id = "form-" + i;
    form.method = "GET";
    form.action = "/common/blank.html";
    form.acceptCharset = "euc-kr";
    form.target = frame.id;
    var input = document.createElement("input");
    input.id = input.name = "input-" + i;
    form.appendChild(input);
    document.body.appendChild(form);
  }

  addEventListener("load", function() {
    frames = Array.prototype.slice.call(
      document.getElementsByTagName("iframe")
    );
    forms = Array.prototype.slice.call(document.getElementsByTagName("form"));
    inputs = Array.prototype.slice.call(document.getElementsByTagName("input"));
    for (var i = 0; i < Math.min(numFrames, numChunks); i++) {
      runNext(i);
    }
  });
});

function runNext(id) {
  var i = currentChunkIndex;
  currentChunkIndex += 1;

  var iframe = frames[id];
  var form = forms[id];
  var input = inputs[id];

  input.value = cplist[i]
    .map(function(x) {
      return String.fromCodePoint(x.cp);
    })
    .join(seperator);
  form.submit();

  iframe.onload = function() {
    var url = iframe.contentWindow.location;
    var query = url.search;
    var result_string = query.substr(query.indexOf("=") + 1);
    var results = result_string.split(encodedSeperator);

    for (var j = 0; j < cplist[i].length; j++) {
      var t = tests[i][j];
      t.step(function() {
        assert_equals(results[j], cplist[i][j].expected); // HERE'S THE TEST
      });
      t.done();
    }
    if (currentChunkIndex < numChunks) {
      runNext(id);
    }
  };
}
</script>
</body>
</html>