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exolve-player.html
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<!--
MIT License
Copyright (c) 2023 Viresh Ratnakar
See the full license notice in exolve-m.js.
-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" type="text/css" href="exolve-m.css?v1.61"/>
<script src="exolve-m.js?v1.61"></script>
<script src="exolve-from-ipuz.js?v1.61"></script>
<script src="exolve-from-puz.js?v1.61"></script>
<script src="exolve-from-text.js?v1.61"></script>
<style>
.xlvp-wait {
cursor: wait;
}
#xlvp-player {
border: 1px solid black;
width: 100%;
box-sizing: border-box;
padding: 20px 4%;
margin: 20px 0;
font-size: 16px;
font-family: monospace;
background-image: linear-gradient(45deg, #f8f8f8 25%, transparent 25%), linear-gradient(-45deg, #f8f8f8 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #f8f8f8 75%), linear-gradient(-45deg, transparent 75%, #f8f8f8 75%);
background-size: 40px 40px;
background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
}
summary {
background: gainsboro;
padding: 4px 6px;
border: 1px solid gray;
cursor: pointer;
font-size: 70%;
}
pre,
#xlvp-help {
border: 1px solid gray;
background: white;
padding: 8px;
}
#xlvp-text,
#xlvp-chooser {
margin-top: 10px;
}
.xlvp-hscroll {
overflow-x: auto;
}
.xlvp-chooser-entry {
background: white;
padding: 4px 0px 6px 12px;
border: 1px solid black;
cursor: pointer;
}
.xlvp-chooser-entry-sel {
background: lightgray !important;
}
.xlvp-chooser-entry:hover {
background: lightgreen;
border: 1px solid darkgreen;
}
.xlvp-list {
padding-left: 14px;
}
.xlvp-list li + li {
margin-top: 16px;
}
.xlvp-button,
.xlvp-button-working {
padding: 2px 6px;
}
.xlvp-button:hover:enabled {
background: lightgreen;
}
.xlvp-button-working {
background: lightpink;
font-weight: bold;
}
#xlvp-infer-msg {
color: red;
display: inline-block;
font-size: small;
font-style: italic;
margin: 4px 0 0 0;
}
#xlvp-multiple-msg {
margin-top: 16px;
background: lightgreen;
padding: 4px;
border-bottom: 1px solid black;
}
#xlvp-save,
#xlvp-view {
margin-top: 10px;
}
#xlvp-last-crossword {
float: right;
}
</style>
<title>Exolve Player</title>
</head>
<body>
<div id="xlvp-frame">
</div>
<div id="xlvp-player" ondrop="xlvpDrop(event);" ondragover="xlvpDrag(event);">
<button id="xlvp-last-crossword">
Hide current crossword
</button>
<h2><b>Exolve Player</b></h2>
<h3><b>Interactively solve a crossword</b></h3>
<ul class="xlvp-list">
<li><b>Drag and drop a crossword file in any of these formats: Exolve, ipuz, puz, text</b></li>
<li><b>Or:</b> <input id="xlvp-file" onchange="xlvpOnOpenFile();" type="file"></input></li>
<li><b>Or: Enter crossword text (selected from a PDF file, for example):</b>
<br>
<div class="xlvp-hscroll">
<textarea onchange="xlvpSaveState()"
placeholder='Paste just the clues from the text of a blocked, symmetric (UK-style) crossword here, including the lines that say "Across" and "Down", optionally preceded by Title/Byline/Preamble. Clues can span multiple lines, but if one of those lines starts with a number then please join it up with the previous line. Change the grid width and height below if different.'
id="xlvp-text" rows="8" cols="80"></textarea>
</div>
<div style="margin-top:8px">
<label for="xlvp-w">Width:</label> <input id="xlvp-w" name="xlvp-w" onchange="xlvpSaveState()" type="text" size="2" maxlength="2" min="3" max="21" value="15"/>
<label for="xlvp-h">Height:</label> <input id="xlvp-h" name="xlvp-h" onchange="xlvpSaveState()" type="text" size="2" maxlength="2" min="3" max="21" value="15"/>
<button id="xlvp-infer"
class="xlvp-button" onclick="xlvpOnText()">"Auto-grid": Try to infer the crossword from the above text</button>
<br>
<span id="xlvp-infer-msg"></span>
</div>
<div id="xlvp-chooser" class="xlvphscroll">
<h3 id="xlvp-multiple-msg">Multiple grids match the text, choose the right one:</h3>
<div id="xlvp-chooser-strip" class="xlvp-hscroll">
</div>
</div></li>
</ul>
<div>
<details>
<summary>Help</summary>
<div id="xlvp-help">
<p>
You can specify the crossword to be opened by choosing a file to open, or by dragging-and-dropping it onto the player.
You can also paste plain-text-formatted crosswords into the "Enter crossword text" area.
</p>
<p>
Once you open a crossword, your state for that puzzle is automatically saved (it will be restored even if you revisit
it later, after having worked on other crosswords).
</p>
<p>
Here are some details on the various supported formats:
<ul>
<li><b>Exolve:</b> You can open Exolve-formatted files with exolve-player. Such files have to contain
a crossword in the Exolve format between "exolve-begin" and "exolve-end" lines. They can be HTML
files too, as long as the Exolve-formatted data is present in them.</li>
<li><b>PUZ:</b> You can open <a href="https://code.google.com/archive/p/puz/wikis/FileFormat.wiki">.puz files</a> with exolve-player.
<li><b>IPUZ:</b> You can open <a href="http://www.ipuz.org/">.ipuz files</a> with exolve-player.
<li><b>Text:</b> You can open text files or paste the text into the "Enter crossword text" area and
click on the "Auto-grid" button. In either case, the software will try to figure out the grid
from the clue numbers and their enumerations. The text should include clues with enumerations,
along with the "Across" and "Down" heading lines. Additionally, the clues may be optionally
preceded by some text, the first line of which will be taken to be the title and the remaining
lines will be treated as the preamble (with some slight attempt at parsing out a setter name).
Grid inference works for standard blocked grids ("UK-style": any 2x2 area must have at least one
black cell) with 180-deg./90-deg./-90-deg./hor.-flip/ver.-flip symmetry. The width and the height
of the crossword should be set in the entry fields under the "Enter crossword text" area (for
pasted text as well as text files).</li>
</ul>
</p>
</div>
</details>
<details id="xlvp-view">
<summary>
Exolve-formatted specs for the current crossword
</summary>
<pre id="xlvp-src" class="xlvp-hscroll">
There isn't a current crossword. Perhaps open one?
</pre>
</details>
<button id="xlvp-save" class="xlvp-button" disabled onclick="xlvpSave()">
Save Exolve-converted crossword as exolve-player-output.html
</button>
</div>
<div id="xlvp-links" style="font-size:80%">
<p><b>Links</b></p>
<p><a href="https://github.com/viresh-ratnakar/exolve">Exolve (free, open source crossword-solving software used here) on GitHub</a></p>
<p><a href="https://github.com/viresh-ratnakar/exet">Exet (free, open source crossword-setting software) on GitHub</a></p>
<p><a href="https://exet.app/">Exet web app: start setting a crossword right away!</a></p>
<p><a href="https://gussalufz.com/">Cryptic crosswords by Gussalufz</a></p>
</div>
</div>
<script>
let xlvpFileName = '';
let xlvpData = '';
let xlvpFromTextActive = null;
const xlvpFrame = document.getElementById('xlvp-frame');
const xlvpSrc = document.getElementById('xlvp-src');
const xlvpSaveButton = document.getElementById('xlvp-save');
const xlvpFile = document.getElementById('xlvp-file');
const xlvpText = document.getElementById('xlvp-text');
const xlvpW = document.getElementById('xlvp-w');
const xlvpH = document.getElementById('xlvp-h');
const xlvpInfer = document.getElementById('xlvp-infer');
const xlvpInferHTML = xlvpInfer.innerHTML;
const xlvpInferMsg = document.getElementById('xlvp-infer-msg');
const xlvpChooser = document.getElementById('xlvp-chooser');
const xlvpChooserStrip = document.getElementById('xlvp-chooser-strip');
const xlvpLastCrossword = document.getElementById('xlvp-last-crossword');
let xlvpShowing = false;
let xlvpPuz = null;
let xlvpChoices = [];
const xlvpStateKey = '42-xlvp-player-state';
function xlvpSaveState() {
const state = {
'data': xlvpData,
'textW': xlvpW.value,
'textH': xlvpH.value,
'textData': xlvpText.value,
'saveDisabled': xlvpSaveButton.disabled,
};
try {
window.localStorage.setItem(xlvpStateKey, JSON.stringify(state));
} catch (err) {
console.log(err);
console.log('Could not save state—local storage is full.');
}
}
function xlvpRestoreState() {
let state = window.localStorage.getItem(xlvpStateKey);
if (!state) {
return;
}
try {
state = JSON.parse(state)
if (state.textW) xlvpW.value = state.textW;
if (state.textH) xlvpH.value = state.textH;
if (state.textData) xlvpText.value = state.textData;
if (state.data) {
xlvpShowExolveInner(state.data, !state.saveDisabled, true);
}
console.log('Successfully restored exolve-player state');
} catch (err) {
console.log(err);
console.log('Failed to parse exolve-player state');
}
}
function xlvpDeleteOld(hideChooser=true) {
if (xlvpPuz) {
xlvpPuz.destroy();
xlvpPuz = null;
}
xlvpFrame.innerHTML = '';
if (hideChooser) {
xlvpChooser.style.display = 'none';
xlvpChooserStrip.innerHTML = '';
if (xlvpChoices.length > 0) {
for (const tp of xlvpChoices) {
tp.destroy();
}
xlvpChoices = [];
}
}
xlvpLastCrossword.disabled = true;
webifi = document.getElementById('webifi-root');
if (webifi) {
webifi.remove();
}
}
function xlvpToggleMinimizeCurrent() {
if (xlvpShowing) {
xlvpLastCrossword.innerHTML = 'Show current crossword';
xlvpFrame.style.display = 'none';
} else {
xlvpLastCrossword.innerHTML = 'Hide current crossword';
xlvpFrame.style.display = '';
}
xlvpShowing = !xlvpShowing;
}
xlvpDeleteOld();
xlvpLastCrossword.disabled = true;
xlvpLastCrossword.addEventListener('click', xlvpToggleMinimizeCurrent);
xlvpRestoreState();
function xlvpShowExolve(specs, converted=false, hideChooser=true) {
const ret = xlvpShowExolveInner(specs, converted, hideChooser);
if (ret) {
xlvpSaveState();
}
return ret;
}
function xlvpShowExolveInner(specs, converted, hideChooser) {
let start = specs.indexOf('exolve-begin')
let end = specs.indexOf('exolve-end')
if (start < 0 || end < 0 || start >= end) {
return false;
}
while (start > 0 && specs.charAt(start - 1) == ' ') {
start--;
}
const data = specs.substring(start, end) + 'exolve-end';
xlvpDeleteOld(hideChooser);
try {
xlvpPuz = new Exolve(data, 'xlvp-frame', null, false);
/**
* If there are warnings, then when they are dismissed, we update and save
* xlvData to add the options to persist ignoring them.
*/
if (xlvpPuz.optionsForWarningFixes.length > 0) {
const b = document.getElementById(xlvpPuz.prefix + '-dismiss-warnings')
b.title = 'Click to dismiss warnings persistently (appropriate options ' +
'will be added to the Exolve specs for this crossword)';
b.addEventListener('click', (evt) => {
const end = xlvpData.indexOf('exolve-end');
console.assert(end >= 0);
const noWarningsSpecs = xlvpData.substring(0, end) +
'exolve-option: ' +
xlvpPuz.optionsForWarningFixes.join(' ') +
'\nexolve-end';
xlvpShowExolve(noWarningsSpecs, converted, hideChooser);
});
}
} catch (err) {
console.log(err);
console.log('new Exolve() failed');
return false;
}
if (!xlvpPuz.useWebifi) {
xlvpPuz.useWebifi = true;
try {
xlvpPuz.loadWebifi();
} catch (err) {
console.log('Disabling webifi because of error: ' + err);
xlvpPuz.useWebifi = false;
}
}
xlvpData = data;
xlvpSrc.innerText = xlvpData;
xlvpSaveButton.disabled = !converted;
xlvpFrame.style.display = '';
xlvpShowing = true;
xlvpLastCrossword.innerHTML = 'Hide current crossword';
xlvpLastCrossword.disabled = false;
xlvpFrame.scrollIntoView();
return true;
}
function xlvpSave() {
const data = '' +
'<!DOCTYPE html>\n' +
'<html lang="en">\n' +
'<head>\n' +
'<meta charset="utf-8"/>\n' +
'<meta name="viewport" content="width=device-width, initial-scale=1"/>\n' +
'<link rel="stylesheet" type="text/css" ' +
'href="https://viresh-ratnakar.github.io/exolve-m.css?v1.61"/>\n' +
'<script src="https://viresh-ratnakar.github.io/exolve-m.js?v1.61">' +
'<\/script>\n' +
'<\/head>\n' +
'<body>\n' +
'<script>\n' +
'createExolve(`' +
`\n${xlvpData}` +
'`);\n' +
'<\/script>\n' +
'<\/body>\n' +
'<\/html>\n';
const a = document.createElement("a");
a.style.display = "none";
document.body.appendChild(a);
a.href = window.URL.createObjectURL(
new Blob([data], {type: "text/html;charset=UTF-8"})
);
a.setAttribute("download", 'exolve-player-output.html');
a.click();
window.URL.revokeObjectURL(a.href);
document.body.removeChild(a);
}
function xlvpShowIpuz(specs, fname) {
let start = specs.indexOf('{')
let end = specs.lastIndexOf('}')
if (start < 0 || end < 0 || start >= end) {
return false;
}
const ipuzJSON = specs.substring(start, end) + '}';
try {
const ipuz = JSON.parse(ipuzJSON);
const exolve = exolveFromIpuz(ipuz, fname);
if (!exolve) {
return false;
}
return xlvpShowExolve(exolve, true);
} catch (err) {
console.log(err);
}
return false;
}
function xlvpShowPuz(buffer, fname) {
const exolve = exolveFromPuz(buffer, fname);
if (!exolve) {
return false;
}
return xlvpShowExolve(exolve, true);
}
function xlvpShow(buffer, fname) {
let utf8decoder = new TextDecoder();
specs = utf8decoder.decode(buffer);
if (xlvpShowExolve(specs)) {
return;
}
if (xlvpShowIpuz(specs, fname)) {
return;
}
if (xlvpShowPuz(buffer, fname)) {
return;
}
// This last one is async.
xlvpShowText(specs, fname);
}
function xlvpOpenFile(f) {
if (!f) {
return;
}
let fr = new FileReader();
fr.onload = function(){
xlvpShow(fr.result, xlvpFileName);
}
xlvpFileName = f.name;
fr.readAsArrayBuffer(f);
}
function xlvpOnOpenFile(ev) {
let f = xlvpFile.files[0];
xlvpFile.value = '';
xlvpOpenFile(f);
}
function xlvpDrop(ev) {
ev.preventDefault();
let f = null;
if (ev.dataTransfer.items && ev.dataTransfer.items.length > 0) {
f = ev.dataTransfer.items[0].getAsFile();
} else if (ev.dataTransfer.files.length > 0) {
f = ev.dataTransfer.files[0];
}
if (!f) {
return;
}
xlvpOpenFile(f);
}
function xlvpDrag(ev) {
ev.preventDefault();
}
function xlvpOnText() {
if (xlvpFromTextActive) {
/* Cancel as been clicked */
xlvpEndFromTextWorker();
return;
}
xlvpShowText(xlvpText.value);
}
function xlvpEndFromTextWorker() {
xlvpInfer.innerHTML = xlvpInferHTML;
xlvpInfer.className = 'xlvp-button';
xlvpInferMsg.innerHTML = '';
if (xlvpFromTextActive) {
xlvpFromTextActive.worker.terminate();
xlvpFromTextActive = null;
}
}
function xlvpShowText(text, fname='provided text') {
if (xlvpFromTextActive) {
/* New text data, kill the old worker if active */
xlvpEndFromTextWorker();
}
xlvpInfer.className = 'xlvp-button-working';
xlvpInfer.innerHTML = 'Working! [click to cancel]';
const w = xlvpW.value;
const h = xlvpH.value;
const worker = exolveFromText(w, h, text, fname);
if (typeof worker === 'string') {
/* There was some error. */
const alertMsg = 'Error parsing a ' + w + 'x' + h +
' grid from ' + fname + ': ' + worker;
alert(alertMsg);
xlvpEndFromTextWorker();
return;
}
xlvpFromTextActive = {
worker: worker,
w: w,
h: h,
text: text,
fname: fname,
};
worker.onmessage = (e) => {
xlvpHandleFromTextMessage(e.data);
};
}
function xlvpHandleFromTextMessage(message) {
if (!xlvpFromTextActive) {
return;
}
if (message.update) {
xlvpInferMsg.innerHTML = message.update;
return;
}
const saved = xlvpFromTextActive;
xlvpEndFromTextWorker();
const matches = message.results || [];
if (matches.length == 0) {
alert('Could not parse or infer a ' + saved.w + 'x' + saved.h +
' grid from ' + saved.fname);
return;
}
console.log('Was able to infer ' + message.results.length + ' unique grid(s)');
xlvpDeleteOld();
if (matches.length > 1) {
let html = '<table><tr>';
for (let i = 0; i < matches.length; i++) {
html += `<td id="xlvp-chooser-${i}" class="xlvp-chooser-entry"></td>`;
}
html += '</tr></table>'
xlvpChooserStrip.innerHTML = html;
for (let i = 0; i < matches.length; i++) {
const smallSpecs = `
exolve-begin
exolve-id: xlvp-choice-#-${i}
exolve-width: ${saved.w}
exolve-height: ${saved.h}
exolve-grid:
${matches[i].gridSpecLines}
exolve-end`;
const smallXlv = new Exolve(smallSpecs, `xlvp-chooser-${i}`, function(puz) {
document.getElementById(puz.prefix + '-controls-etc').style.display = 'none';
document.getElementById(puz.prefix + '-clear-area').style.display = 'none';
}, false, 0, 150, false);
xlvpChoices.push(smallXlv);
const chooser = document.getElementById(`xlvp-chooser-${i}`);
chooser.addEventListener('click', () => {
xlvpShowExolve(matches[i].exolve, true, false);
chooser.classList.add('xlvp-chooser-entry-sel');
for (let j = 0; j < matches.length; j++) {
if (j == i) {
continue;
}
document.getElementById(`xlvp-chooser-${j}`).className = 'xlvp-chooser-entry';
}
});
}
xlvpChooser.style.display = '';
} else {
const spec = matches[0].exolve;
xlvpShowExolve(spec, true);
}
}
</script>
</body>
</html>