Add webpage to generate reg file

wc3reggen.html

@@ -0,0 +1,73 @@
+<script>
+function toHex(num) {
+    num = num.toString(16);
+    while (num.length < 2) num = "0" + num;
+    return num;
+}
+
+function convertToHex(str) {
+    hexstring = "";
+    for (var n = 0; n < str.length; n++) {
+        let hex = Number(str.charCodeAt(n)).toString(16);
+        hexstring = hexstring.concat(toHex(hex), ",");
+    }
+    return hexstring + "00";
+}
+    
+function generate() {
+    let base0 = "1001";
+    let base1 = "00";
+    let name = document.getElementById("fname").value;
+    let region = "1";
+    let url = document.getElementById("furl").value;
+
+    let hexstring = convertToHex(base0);
+    hexstring = hexstring + "," + convertToHex(base1);
+    hexstring = hexstring + "," + convertToHex(name);
+    hexstring = hexstring + "," + convertToHex(region);
+    hexstring = hexstring + "," + convertToHex(url);
+    hexstring = hexstring + "," + "00";
+   
+    let regscript =
+`REGEDIT4
+
+[HKEY_CURRENT_USER\\Software\\Blizzard Entertainment\\Warcraft III]
+"Battle.net Gateways"=hex(7):${hexstring}
+`;
+
+    document.getElementById("regscript").value = regscript;
+}
+
+
+function downloadReg() {
+    let filename = "wc3.reg";
+    let data = document.getElementById("regscript").value;
+
+    var element = document.createElement('a');
+    element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(data));
+    element.setAttribute('download', filename);
+
+    element.style.display = 'none';
+    document.body.appendChild(element);
+
+    element.click();
+
+    document.body.removeChild(element);
+}
+</script>
+
+<label for="fname">Gateway Name (Nickname):    </label><br>
+<input type="text" id="fname" name="fname">
+<br><br>
+<label for="furl">PvPGN Server URL:</label><br>
+<input type="text" id="furl" name="furl"> 
+<br><br>
+<form onclick="return generate();" class="my-form">
+    <input type="button" value="Generate">
+</form>
+<form onclick="return downloadReg();" class="my-form">
+    <input type="button" value="Download">
+</form>
+
+<label for="regscript">Registry Script:</label><br>
+<textarea id="regscript" name="regscript" rows="10" cols="200"></textarea>