74 lines
2.2 KiB
TypeScript
74 lines
2.2 KiB
TypeScript
// Due to the fact that emoji from Apple do not contain some characters, it is necessary to remove them from emoji-data
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// https://github.com/iamcal/emoji-data/issues/136
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const EXCLUDE_EMOJIS = ['female_sign', 'male_sign', 'medical_symbol'];
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export type EmojiRawData = typeof import('emoji-data-ios/emoji-data.json');
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export type EmojiModule = { default: EmojiRawData };
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export type EmojiData = {
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categories: Array<EmojiCategory>;
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emojis: Record<string, Emoji>;
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};
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function unifiedToNative(unified: string) {
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const unicodes = unified.split('-');
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const codePoints = unicodes.map((i) => parseInt(i, 16));
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return String.fromCodePoint(...codePoints);
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}
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export function nativeToUnfified(emoji: string) {
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let code;
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if (emoji.length === 1) {
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code = emoji.charCodeAt(0).toString(16).padStart(4, '0');
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} else {
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const pairs = [];
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for (let i = 0; i < emoji.length; i++) {
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if (emoji.charCodeAt(i) >= 0xd800 && emoji.charCodeAt(i) <= 0xdbff) {
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if (emoji.charCodeAt(i + 1) >= 0xdc00 && emoji.charCodeAt(i + 1) <= 0xdfff) {
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pairs.push(
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(emoji.charCodeAt(i) - 0xd800) * 0x400
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+ (emoji.charCodeAt(i + 1) - 0xdc00) + 0x10000,
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);
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}
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} else if (emoji.charCodeAt(i) < 0xd800 || emoji.charCodeAt(i) > 0xdfff) {
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pairs.push(emoji.charCodeAt(i));
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}
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}
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code = pairs.map((x) => x.toString(16).padStart(4, '0')).join('-');
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}
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return code;
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}
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export function uncompressEmoji(data: EmojiRawData): EmojiData {
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const emojiData: EmojiData = { categories: [], emojis: {} };
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for (let i = 0; i < data.length; i += 2) {
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const category = {
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id: data[i][0],
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name: data[i][1],
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emojis: [],
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} as EmojiCategory;
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for (let j = 0; j < data[i + 1].length; j++) {
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const emojiRaw = data[i + 1][j];
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if (!EXCLUDE_EMOJIS.includes(emojiRaw[1])) {
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category.emojis.push(emojiRaw[1]);
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emojiData.emojis[emojiRaw[1]] = {
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id: emojiRaw[1],
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colons: `:${emojiRaw[1]}:`,
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native: unifiedToNative(emojiRaw[0]),
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image: emojiRaw[0].toLowerCase(),
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};
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}
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}
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emojiData.categories.push(category);
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}
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return emojiData;
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}
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