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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Unicode character lookup</title>
<style>
body {
font-size: 12pt;
font-family: sans-serif;
}
.table > div:nth-child(odd) {
background-color: #eee;
}
.table > div > span {
display: inline-block;
}
.table > div > span.codepoint {
width: 6em;
font-weight: bold;
}
.table > div > span.symbol {
width: 1.5em;
}
.table > div > span.space-spacer {
width: 1em;
}
.table {
max-height: 300px;
overflow-y: scroll;
}
.invisible {
display: none;
}
#notfound_container {
margin-top: 15px;
}
code {
background-color: #eee;
padding: 3px;
border-radius: 5px;
}
@media (prefers-color-scheme: dark) {
body {
color: #eee;
background-color: #181818;
}
.table > div:nth-child(even) {
background-color: #1b1b1b;
}
.table > div:nth-child(odd) {
background-color: #262626;
}
input[type="text"] {
background-color: #444;
color: #fff;
}
code {
background-color: #252525;
}
}
</style>
<script>
function do_lookup(override) {
var input;
if (override != null) {
if (override.length == 0) return;
input = override;
document.getElementById("input").value = override;
} else {
input = document.getElementById("input").value;
if (input.length == 0) return;
}
if ("history" in window && "replaceState" in history) {
history.replaceState(null, "", "#" + input);
} else {
location.hash = input;
}
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == 4) {
if (xhr.status == 200) {
handleResponse(JSON.parse(xhr.responseText));
} else {
alert("Request failed: " + xhr.responseText);
}
}
};
xhr.open("GET", "/unicode/lookup/" + encodeURIComponent(input));
xhr.responseType = "text";
xhr.setRequestHeader("Content-Type", "text/plain");
xhr.send();
}
function handleResponse(json) {
var elem;
/* elem = document.getElementById("json");
elem.innerHTML = "";
elem.appendChild(document.createTextNode(JSON.stringify(json))); */
var index_container = document.getElementById("index_container");
if (json.indices.length > 0) {
index_container.classList.remove("invisible");
setTableRows("indices", json.indices);
if (json.indices.length > 1) {
document.getElementById("indices_concatenated_container").classList.remove("invisible");
elem = document.getElementById("indices_concatenated");
elem.innerHTML = "";
var str = "";
for (var i = 0; i < json.indices.length; i++)
str += String.fromCodePoint(parseInt(json.indices[i][0], 16));
elem.appendChild(document.createTextNode(str));
} else {
document.getElementById("indices_concatenated_container").classList.add("invisible");
}
} else if (!index_container.classList.contains("invisible")) {
index_container.classList.add("invisible");
}
setTableRows("codepoints", json.codepoints);
setTableRows("search", json.search);
if (json.notfound.length > 0) {
document.getElementById("notfound_container").classList.remove("invisible");
document.getElementById("notfound").innerText = json.notfound;
} else {
document.getElementById("notfound_container").classList.add("invisible");
document.getElementById("notfound").innerText = "";
}
}
function setTableRows(key, rows) {
document.getElementById(key + "_num").innerHTML = "(" + rows.length + ")";
var elem = document.getElementById(key);
elem.innerHTML = "";
for (var j = 0; j < rows.length; j++) {
elem.appendChild(makeCodepointDiv(rows[j]));
}
}
function makeCodepointDiv(row) {
var div = document.createElement("div");
populateCodepoint(div, row);
return div;
}
function populateCodepoint(div, row) {
var span = document.createElement("span");
span.classList.add("codepoint");
span.appendChild(document.createTextNode("U+" + row[0]));
div.appendChild(span);
span = document.createElement("span");
span.classList.add("space-spacer");
span.appendChild(document.createTextNode(" "));
div.appendChild(span);
span = document.createElement("span");
span.classList.add("symbol");
span.appendChild(document.createTextNode(String.fromCodePoint(parseInt(row[0], 16))));
div.appendChild(span);
span = document.createElement("span");
span.classList.add("space-spacer");
span.appendChild(document.createTextNode(" "));
div.appendChild(span);
span = document.createElement("span");
span.appendChild(document.createTextNode(row[1]));
div.appendChild(span);
}
window.addEventListener("load", function() {
if (location.hash.length > 0) {
do_lookup(decodeURIComponent(location.hash.slice(1)));
}
document.getElementById("input").focus();
});
</script>
</head>
<body>
<h1>Unicode character lookup</h1>
<input type="text" id="input" placeholder="Character(s) to look up" onkeypress="if (event.keyCode == 10 || event.keyCode == 13) do_lookup()">
<input type="button" onclick="do_lookup()" value="Lookup">
<br>
<!-- <code id="json"></code><br> -->
<div id="notfound_container" class="invisible">
These were not found, perhaps the server needs to be update its unicode table? <code id="notfound"></code>
</div>
<div id="index_container" class="invisible">
<h3>Numeric codepoints <span id="indices_num"></span></h3>
<div id="indices" class="table"></div>
<br>
<div id="indices_concatenated_container">
Concatenated: ⟨ <span id="indices_concatenated"></span> ⟩
</div>
</div>
<h3>Codepoints <span id="codepoints_num"></span></h3>
<div id="codepoints" class="table"></div>
<h3>Found in descriptions <span id="search_num"></span></h3>
<div id="search" class="table"></div>
</body>
</html>
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