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Fix emoji substitution not applying only to text nodes in Web UI (#20640)

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Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Signed-off-by: Claire <claire.github-309c@sitedethib.com>
This commit is contained in:
Claire 2022-11-14 20:26:03 +01:00 committed by GitHub
parent 088c365559
commit bd267f6353
1 changed files with 46 additions and 34 deletions
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80
app/javascript/mastodon/features/emoji/emoji.js
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@ -19,15 +19,23 @@ const emojiFilename = (filename) => {
return borderedEmoji.includes(filename) ? (filename + '_border') : filename;
};
const emojify = (str, customEmojis = {}) => {
const tagCharsWithoutEmojis = '<&';
const tagCharsWithEmojis = Object.keys(customEmojis).length ? '<&:' : '<&';
let rtn = '', tagChars = tagCharsWithEmojis, invisible = 0;
const emojifyTextNode = (node, customEmojis) => {
const parentElement = node.parentElement;
let str = node.textContent;
for (;;) {
let match, i = 0, tag;
while (i < str.length && (tag = tagChars.indexOf(str[i])) === -1 && (invisible || !(match = trie.search(str.slice(i))))) {
i += str.codePointAt(i) < 65536 ? 1 : 2;
let match, i = 0;
if (customEmojis === null) {
while (i < str.length && !(match = trie.search(str.slice(i)))) {
i += str.codePointAt(i) < 65536 ? 1 : 2;
}
} else {
while (i < str.length && str[i] !== ':' && !(match = trie.search(str.slice(i)))) {
i += str.codePointAt(i) < 65536 ? 1 : 2;
}
}
let rend, replacement = '';
if (i === str.length) {
break;
@ -35,8 +43,6 @@ const emojify = (str, customEmojis = {}) => {
if (!(() => {
rend = str.indexOf(':', i + 1) + 1;
if (!rend) return false; // no pair of ':'
const lt = str.indexOf('<', i + 1);
if (!(lt === -1 || lt >= rend)) return false; // tag appeared before closing ':'
const shortname = str.slice(i, rend);
// now got a replacee as ':shortname:'
// if you want additional emoji handler, add statements below which set replacement and return true.
@ -47,29 +53,6 @@ const emojify = (str, customEmojis = {}) => {
}
return false;
})()) rend = ++i;
} else if (tag >= 0) { // <, &
rend = str.indexOf('>;'[tag], i + 1) + 1;
if (!rend) {
break;
}
if (tag === 0) {
if (invisible) {
if (str[i + 1] === '/') { // closing tag
if (!--invisible) {
tagChars = tagCharsWithEmojis;
}
} else if (str[rend - 2] !== '/') { // opening tag
invisible++;
}
} else {
if (str.startsWith('<span class="invisible">', i)) {
// avoid emojifying on invisible text
invisible = 1;
tagChars = tagCharsWithoutEmojis;
}
}
}
i = rend;
} else { // matched to unicode emoji
const { filename, shortCode } = unicodeMapping[match];
const title = shortCode ? `:${shortCode}:` : '';
@ -80,10 +63,39 @@ const emojify = (str, customEmojis = {}) => {
rend += 1;
}
}
rtn += str.slice(0, i) + replacement;
node.textContent = str.slice(0, i);
parentElement.insertAdjacentHTML('beforeend', replacement);
str = str.slice(rend);
node = document.createTextNode(str);
parentElement.append(node);
}
return rtn + str;
};
const emojifyNode = (node, customEmojis) => {
for (const child of node.childNodes) {
switch(child.nodeType) {
case Node.TEXT_NODE:
emojifyTextNode(child, customEmojis);
break;
case Node.ELEMENT_NODE:
if (!child.classList.contains('invisible'))
emojifyNode(child, customEmojis);
break;
}
}
};
const emojify = (str, customEmojis = {}) => {
const wrapper = document.createElement('div');
wrapper.innerHTML = str;
if (!Object.keys(customEmojis).length)
customEmojis = null;
emojifyNode(wrapper, customEmojis);
return wrapper.innerHTML;
};
export default emojify;