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302 lines (271 loc) · 8.76 KB
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Copy pathscript.js
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302 lines (271 loc) · 8.76 KB
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const blob = new Blob(['importScripts("https://cdn.jsdelivr.net/npm/lzma@2.3.2/src/lzma_worker.min.js");']);
const lzma = new LZMA(window.URL.createObjectURL(blob));
let editor = null;
let select = null;
let wrap = false;
let clipboard = null;
let statsEl = null;
const init = () => {
handleLegacyUrl();
initCodeEditor();
initLangSelector();
initWrapper();
initCode();
initClipboard();
initModals();
};
const initCodeEditor = () => {
CodeMirror.modeURL = 'https://cdn.jsdelivr.net/npm/codemirror@5.65.5/mode/%N/%N.js';
editor = new CodeMirror(byId('editor'), {
lineNumbers: true,
theme: 'dracula',
readOnly: readOnly,
lineWrapping: false,
scrollbarStyle: 'simple',
});
if (readOnly) {
document.body.classList.add('readonly');
}
statsEl = byId('stats');
editor.on('change', () => {
statsEl.innerHTML = `Length: ${editor.getValue().length} | Lines: ${editor['doc'].size}`;
hideCopyBar();
});
};
const initLangSelector = () => {
select = new SlimSelect({
select: '#language',
data: CodeMirror.modeInfo.map((e) => ({
text: e.name,
value: shorten(e.name),
data: { mime: e.mime, mode: e.mode },
})),
showContent: 'down',
onChange: (e) => {
const language = e.data || { mime: null, mode: null };
editor.setOption('mode', language.mime);
CodeMirror.autoLoadMode(editor, language.mode);
document.title = e.text && e.text !== 'Plain Text' ? `UnNote - ${e.text} code snippet` : 'UnNote';
},
});
// Set lang selector
const l = new URLSearchParams(window.location.search).get('l');
select.set(l ? decodeURIComponent(l) : shorten('Plain Text'));
};
const initWrapper = () => {
const w = new URLSearchParams(window.location.search).get('w');
wrap = w === '1';
if (wrap) {
enableLineWrapping();
}
};
const initCode = () => {
let base64 = location.hash.substr(1);
if (base64.length === 0) {
return;
}
decompress(base64, (code, err) => {
if (err) {
console.error('Failed to decompress data: ' + err);
MicroModal.show('error-modal');
return;
}
editor.setValue(code);
});
};
const handleLegacyUrl = () => {
const lang = new URLSearchParams(window.location.search).get('lang');
const base = `${location.protocol}//${location.host}`;
if (location.hash.charAt(5) === '-') {
const hashedLang = location.hash.substr(1, 4);
const newLang = CodeMirror.modeInfo.find((e) => hash(e.name) === hashedLang);
const queryParams = newLang ? '?l=' + shorten(newLang.name) : '';
location.replace(`${base}/${queryParams}#${location.hash.substr(6)}`);
throw new Error('waiting for page to reload');
}
if (lang) {
location.replace(`${base}/${'?l=' + shorten(lang)}${location.hash}`);
throw new Error('waiting for page to reload');
}
};
const initClipboard = () => {
clipboard = new ClipboardJS('.clipboard');
clipboard.on('success', () => {
hideCopyBar(true);
});
};
const initModals = () => {
MicroModal.init({
onClose: () => editor.focus(),
});
};
const generateLink = (mode) => {
const data = editor.getValue();
compress(data, (base64, err) => {
if (err) {
alert('Failed to compress data: ' + err);
return;
}
const url = buildUrl(base64, mode);
statsEl.innerHTML = `Data length: ${data.length} | Link length: ${url.length} | Compression ratio: ${Math.round(
(100 * url.length) / data.length
)}%`;
showCopyBar(url);
});
};
// Open the "Copy" bar and select the content
const showCopyBar = (dataToCopy) => {
byId('copy').classList.remove('hidden');
const linkInput = byId('copy-link');
linkInput.value = dataToCopy;
linkInput.focus();
linkInput.setSelectionRange(0, dataToCopy.length);
};
// Close the "Copy" bar
const hideCopyBar = (success) => {
const copyButton = byId('copy-btn');
const copyBar = byId('copy');
if (!success) {
copyBar.classList.add('hidden');
return;
}
copyButton.innerText = 'Copied !';
setTimeout(() => {
copyBar.classList.add('hidden');
copyButton.innerText = 'Copy';
}, 800);
};
const disableLineWrapping = () => {
byId('disable-line-wrapping').classList.add('hidden');
byId('enable-line-wrapping').classList.remove('hidden');
editor.setOption('lineWrapping', false);
wrap = false;
};
const enableLineWrapping = () => {
byId('enable-line-wrapping').classList.add('hidden');
byId('disable-line-wrapping').classList.remove('hidden');
editor.setOption('lineWrapping', true);
wrap = true;
};
const openInNewTab = () => {
window.open(location.href.replace(/[?&]readonly/, ''));
};
// Build a shareable URL
const buildUrl = (rawData, mode) => {
const base = `${location.protocol}//${location.host}${location.pathname}`;
const query = shorten('Plain Text') === select.selected() ? '' : `?l=${encodeURIComponent(select.selected())}&w=${wrap ? 1 : 0}`;
const url = base + query + '#' + rawData;
if (mode === 'markdown') {
return `[UnNote snippet](${url})`;
}
if (mode === 'iframe') {
const height = editor['doc'].height + 45;
return `<iframe width="100%" height="${height}" frameborder="0" src="${url}"></iframe>`;
}
return url;
};
// Transform a compressed base64 string into a plain text string
const decompress = (base64, cb) => {
const progressBar = byId('progress');
const req = new XMLHttpRequest();
req.open('GET', 'data:application/octet;base64,' + base64);
req.responseType = 'arraybuffer';
req.onload = (e) => {
lzma.decompress(
new Uint8Array(e.target.response),
(result, err) => {
progressBar.style.width = '0';
cb(result, err);
},
(progress) => {
progressBar.style.width = 100 * progress + '%';
}
);
};
req.send();
};
// Transform a plain text string into a compressed base64 string
const compress = (str, cb) => {
if (str.length === 0) {
cb('');
return;
}
const progressBar = byId('progress');
lzma.compress(
str,
1,
(compressed, err) => {
if (err) {
progressBar.style.width = '0';
cb(compressed, err);
return;
}
const reader = new FileReader();
reader.onload = () => {
progressBar.style.width = '0';
cb(reader.result.substr(reader.result.indexOf(',') + 1));
};
reader.readAsDataURL(new Blob([new Uint8Array(compressed)]));
},
(progress) => {
progressBar.style.width = 100 * progress + '%';
}
);
};
const slugify = (str) =>
str
.trim()
.toString()
.toLowerCase()
.replace(/\s+/g, '-')
.replace(/\+/g, '-p')
.replace(/#/g, '-sharp')
.replace(/[^\w\-]+/g, '');
const shorten = (name) => {
let n = slugify(name).replace('script', '-s').replace('python', 'py');
const nov = (s) => s[0] + s.substr(1).replace(/[aeiouy-]/g, '');
if (n.replace(/-/g, '').length <= 4) {
return n.replace(/-/g, '');
}
if (n.split('-').length >= 2) {
return n
.split('-')
.map((x) => nov(x.substr(0, 2)))
.join('')
.substr(0, 4);
}
n = nov(n);
if (n.length <= 4) {
return n;
}
return n.substr(0, 2) + n.substr(n.length - 2, 2);
};
const byId = (id) => document.getElementById(id);
// Legacy code, only for retro-compatibility
const hash = function (str, seed = 0) {
let h1 = 0xdeadbeef ^ seed;
let h2 = 0x41c6ce57 ^ seed;
for (let i = 0, ch; i < str.length; i++) {
ch = str.charCodeAt(i);
h1 = Math.imul(h1 ^ ch, 2654435761);
h2 = Math.imul(h2 ^ ch, 1597334677);
}
h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909);
h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909);
const h = 4294967296 * (2097151 & h2) + (h1 >>> 0);
return h.toString(36).substr(0, 4).toUpperCase();
};
// Only for tests purposes
const testAllModes = () => {
for (const [index, language] of Object.entries(CodeMirror.modeInfo)) {
CodeMirror.autoLoadMode(editor, language.mode);
setTimeout(() => {
console.info(language.name);
select.set(shorten(language.name));
}, 1000 * index);
}
};
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('sw.js');
}
init();