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author | kibigo! <marrus-sh@users.noreply.github.com> | 2017-11-17 19:11:18 -0800 |
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committer | kibigo! <marrus-sh@users.noreply.github.com> | 2017-11-17 19:29:16 -0800 |
commit | 45c44989c8fb6e24badd18bb83ac5f68de0aceaf (patch) | |
tree | 794d088986d8518506e3e1eec0c8ffb7da5604b8 /app/javascript/themes/glitch/util/emoji/index.js | |
parent | 5a9982b425d3db65d813eb0314a27cea16f0f52d (diff) |
Forking glitch theme
Diffstat (limited to 'app/javascript/themes/glitch/util/emoji/index.js')
-rw-r--r-- | app/javascript/themes/glitch/util/emoji/index.js | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/app/javascript/themes/glitch/util/emoji/index.js b/app/javascript/themes/glitch/util/emoji/index.js new file mode 100644 index 000000000..8c45a58fe --- /dev/null +++ b/app/javascript/themes/glitch/util/emoji/index.js @@ -0,0 +1,95 @@ +import { autoPlayGif } from 'themes/glitch/util/initial_state'; +import unicodeMapping from './emoji_unicode_mapping_light'; +import Trie from 'substring-trie'; + +const trie = new Trie(Object.keys(unicodeMapping)); + +const assetHost = process.env.CDN_HOST || ''; + +const emojify = (str, customEmojis = {}) => { + const tagCharsWithoutEmojis = '<&'; + const tagCharsWithEmojis = Object.keys(customEmojis).length ? '<&:' : '<&'; + let rtn = '', tagChars = tagCharsWithEmojis, invisible = 0; + 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 rend, replacement = ''; + if (i === str.length) { + break; + } else if (str[i] === ':') { + 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. + if (shortname in customEmojis) { + const filename = autoPlayGif ? customEmojis[shortname].url : customEmojis[shortname].static_url; + replacement = `<img draggable="false" class="emojione" alt="${shortname}" title="${shortname}" src="${filename}" />`; + return true; + } + return false; + })()) rend = ++i; + } else if (tag >= 0) { // <, & + rend = str.indexOf('>;'[tag], i + 1) + 1; + if (!rend) { + break; + } + if (tag === 0) { + if (invisible) { + if (str[i + 1] === '/') { // closing tag + if (!--invisible) { + tagChars = tagCharsWithEmojis; + } + } else if (str[rend - 2] !== '/') { // opening tag + invisible++; + } + } else { + if (str.startsWith('<span class="invisible">', i)) { + // avoid emojifying on invisible text + invisible = 1; + tagChars = tagCharsWithoutEmojis; + } + } + } + i = rend; + } else { // matched to unicode emoji + const { filename, shortCode } = unicodeMapping[match]; + const title = shortCode ? `:${shortCode}:` : ''; + replacement = `<img draggable="false" class="emojione" alt="${match}" title="${title}" src="${assetHost}/emoji/${filename}.svg" />`; + rend = i + match.length; + } + rtn += str.slice(0, i) + replacement; + str = str.slice(rend); + } + return rtn + str; +}; + +export default emojify; + +export const buildCustomEmojis = (customEmojis) => { + const emojis = []; + + customEmojis.forEach(emoji => { + const shortcode = emoji.get('shortcode'); + const url = autoPlayGif ? emoji.get('url') : emoji.get('static_url'); + const name = shortcode.replace(':', ''); + + emojis.push({ + id: name, + name, + short_names: [name], + text: '', + emoticons: [], + keywords: [name], + imageUrl: url, + custom: true, + }); + }); + + return emojis; +}; |