Get rid of stripped-emoji.json in favour of an in-memory single truth source

package.json

@@ -43,7 +43,6 @@
     "diff-i18n": "cp src/i18n/strings/en_EN.json src/i18n/strings/en_EN_orig.json && ./scripts/gen-i18n.js && node scripts/compare-file.js src/i18n/strings/en_EN_orig.json src/i18n/strings/en_EN.json",
     "build": "yarn reskindex && yarn start:init",
     "build:watch": "babel src -w --skip-initial-build -d lib --source-maps --copy-files",
-    "emoji-data-strip": "node scripts/emoji-data-strip.js",
     "start": "yarn start:init && yarn start:all",
     "start:all": "concurrently --kill-others-on-fail --prefix \"{time} [{name}]\" -n build,reskindex \"yarn build:watch\" \"yarn reskindex:watch\"",
     "start:init": "babel src -d lib --source-maps --copy-files",

scripts/emoji-data-strip.js

@@ -1,30 +0,0 @@
-#!/usr/bin/env node
-
-// This generates src/stripped-emoji.json as used by the EmojiProvider autocomplete
-// provider.
-
-const EMOJIBASE = require('emojibase-data/en/compact.json');
-
-const fs = require('fs');
-
-const output = EMOJIBASE.map(
-    (datum) => {
-        const newDatum = {
-            name: datum.annotation,
-            shortname: `:${datum.shortcodes[0]}:`,
-            category: datum.group,
-            emoji_order: datum.order,
-        };
-        if (datum.shortcodes.length > 1) {
-            newDatum.aliases = datum.shortcodes.slice(1).map(s => `:${s}:`);
-        }
-        if (datum.emoticon) {
-            newDatum.aliases_ascii = [ datum.emoticon ];
-        }
-        return newDatum;
-    }
-);
-
-// Write to a file in src. Changes should be checked into git. This file is copied by
-// babel using --copy-files
-fs.writeFileSync('./src/stripped-emoji.json', JSON.stringify(output));

src/HtmlUtils.js

@@ -32,9 +32,9 @@ import classNames from 'classnames';
 import MatrixClientPeg from './MatrixClientPeg';
 import url from 'url';
 
-import EMOJIBASE from 'emojibase-data/en/compact.json';
 import EMOJIBASE_REGEX from 'emojibase-regex';
 import {tryTransformPermalinkToLocalHref} from "./utils/permalinks/Permalinks";
+import {SHORTCODE_TO_EMOJI, getEmojiFromUnicode} from "./emoji";
 
 linkifyMatrix(linkify);
 
@@ -58,8 +58,6 @@ const COLOR_REGEX = /^#[0-9a-fA-F]{6}$/;
 
 const PERMITTED_URL_SCHEMES = ['http', 'https', 'ftp', 'mailto', 'magnet'];
 
-const VARIATION_SELECTOR = String.fromCharCode(0xFE0F);
-
 /*
  * Return true if the given string contains emoji
  * Uses a much, much simpler regex than emojibase's so will give false
@@ -71,21 +69,6 @@ function mightContainEmoji(str) {
     return SURROGATE_PAIR_PATTERN.test(str) || SYMBOL_PATTERN.test(str);
 }
 
-/**
- * Find emoji data in emojibase by character.
- *
- * @param {String} char The emoji character
- * @return {Object} The emoji data
- */
-export function findEmojiData(char) {
-    // Check against both the char and the char with an empty variation selector
-    // appended because that's how emojibase stores its base emojis which have
-    // variations.
-    // See also https://github.com/vector-im/riot-web/issues/9785.
-    const emptyVariation = char + VARIATION_SELECTOR;
-    return EMOJIBASE.find(e => e.unicode === char || e.unicode === emptyVariation);
-}
-
 /**
  * Returns the shortcode for an emoji character.
  *
@@ -93,7 +76,7 @@ export function findEmojiData(char) {
  * @return {String} The shortcode (such as :thumbup:)
  */
 export function unicodeToShortcode(char) {
-    const data = findEmojiData(char);
+    const data = getEmojiFromUnicode(char);
     return (data && data.shortcodes ? `:${data.shortcodes[0]}:` : '');
 }
 
@@ -105,7 +88,7 @@ export function unicodeToShortcode(char) {
  */
 export function shortcodeToUnicode(shortcode) {
     shortcode = shortcode.slice(1, shortcode.length - 1);
-    const data = EMOJIBASE.find(e => e.shortcodes && e.shortcodes.includes(shortcode));
+    const data = SHORTCODE_TO_EMOJI.get(shortcode);
     return data ? data.unicode : null;
 }
 

src/autocomplete/EmojiProvider.js

@@ -2,6 +2,7 @@
 Copyright 2016 Aviral Dasgupta
 Copyright 2017 Vector Creations Ltd
 Copyright 2017, 2018 New Vector Ltd
+Copyright 2019 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -28,7 +29,7 @@ import SettingsStore from "../settings/SettingsStore";
 import { shortcodeToUnicode } from '../HtmlUtils';
 
 import EMOTICON_REGEX from 'emojibase-regex/emoticon';
-import EmojiData from '../stripped-emoji.json';
+import EMOJIBASE from 'emojibase-data/en/compact.json';
 
 const LIMIT = 20;
 
@@ -38,19 +39,15 @@ const EMOJI_REGEX = new RegExp('(' + EMOTICON_REGEX.source + '|:[+-\\w]*:?)$', '
 // XXX: it's very unclear why we bother with this generated emojidata file.
 // all it means is that we end up bloating the bundle with precomputed stuff
 // which would be trivial to calculate and cache on demand.
-const EMOJI_SHORTNAMES = Object.keys(EmojiData).map((key) => EmojiData[key]).sort(
-    (a, b) => {
-        if (a.category === b.category) {
-            return a.emoji_order - b.emoji_order;
+const EMOJI_SHORTNAMES = EMOJIBASE.sort((a, b) => {
+    if (a.group === b.group) {
+        return a.order - b.order;
     }
-        return a.category - b.category;
-    },
-).map((a, index) => {
+    return a.group - b.group;
+}).map((emoji, index) => {
     return {
-        name: a.name,
-        shortname: a.shortname,
-        aliases: a.aliases ? a.aliases.join(' ') : '',
-        aliases_ascii: a.aliases_ascii ? a.aliases_ascii.join(' ') : '',
+        emoji,
+        shortname: `:${emoji.shortcodes[0]}:`,
         // Include the index so that we can preserve the original order
         _orderBy: index,
     };
@@ -69,12 +66,16 @@ export default class EmojiProvider extends AutocompleteProvider {
     constructor() {
         super(EMOJI_REGEX);
         this.matcher = new QueryMatcher(EMOJI_SHORTNAMES, {
-            keys: ['aliases_ascii', 'shortname', 'aliases'],
+            keys: ['emoji.emoticon', 'shortname'],
+            funcs: [
+            //     (o) => `:${o.emoji.shortcodes[0]}:`, // shortname
+                (o) => o.emoji.shortcodes.length > 1 ? o.emoji.shortcodes.slice(1).map(s => `:${s}:`).join(" ") : "", // aliases
+            ],
             // For matching against ascii equivalents
             shouldMatchWordsOnly: false,
         });
         this.nameMatcher = new QueryMatcher(EMOJI_SHORTNAMES, {
-            keys: ['name'],
+            keys: ['emoji.annotation'],
             // For removing punctuation
             shouldMatchWordsOnly: true,
         });
@@ -96,7 +97,7 @@ export default class EmojiProvider extends AutocompleteProvider {
 
             const sorters = [];
             // make sure that emoticons come first
-            sorters.push((c) => score(matchedString, c.aliases_ascii));
+            sorters.push((c) => score(matchedString, c.emoji.emoticon || ""));
 
             // then sort by score (Infinity if matchedString not in shortname)
             sorters.push((c) => score(matchedString, c.shortname));
@@ -110,8 +111,7 @@ export default class EmojiProvider extends AutocompleteProvider {
             sorters.push((c) => c._orderBy);
             completions = _sortBy(_uniq(completions), sorters);
 
-            completions = completions.map((result) => {
-                const { shortname } = result;
+            completions = completions.map(({shortname}) => {
                 const unicode = shortcodeToUnicode(shortname);
                 return {
                     completion: unicode,

src/autocomplete/QueryMatcher.js

@@ -71,6 +71,7 @@ export default class QueryMatcher {
             }
 
             for (const keyValue of keyValues) {
+                if (!keyValue) continue; // skip falsy keyValues
                 const key = stripDiacritics(keyValue).toLowerCase();
                 if (!this._items.has(key)) {
                     this._items.set(key, []);

src/components/views/emojipicker/EmojiPicker.js

@@ -16,54 +16,12 @@ limitations under the License.
 
 import React from 'react';
 import PropTypes from 'prop-types';
-import EMOJIBASE from 'emojibase-data/en/compact.json';
 
 import sdk from '../../../index';
 import { _t } from '../../../languageHandler';
 
 import * as recent from './recent';
-
-const EMOJIBASE_CATEGORY_IDS = [
-    "people", // smileys
-    "people", // actually people
-    "control", // modifiers and such, not displayed in picker
-    "nature",
-    "foods",
-    "places",
-    "activity",
-    "objects",
-    "symbols",
-    "flags",
-];
-
-const DATA_BY_CATEGORY = {
-    "people": [],
-    "nature": [],
-    "foods": [],
-    "places": [],
-    "activity": [],
-    "objects": [],
-    "symbols": [],
-    "flags": [],
-};
-const DATA_BY_EMOJI = {};
-
-const VARIATION_SELECTOR = String.fromCharCode(0xFE0F);
-EMOJIBASE.forEach(emoji => {
-    if (emoji.unicode.includes(VARIATION_SELECTOR)) {
-        // Clone data into variation-less version
-        emoji = Object.assign({}, emoji, {
-            unicode: emoji.unicode.replace(VARIATION_SELECTOR, ""),
-        });
-    }
-    DATA_BY_EMOJI[emoji.unicode] = emoji;
-    const categoryId = EMOJIBASE_CATEGORY_IDS[emoji.group];
-    if (DATA_BY_CATEGORY.hasOwnProperty(categoryId)) {
-        DATA_BY_CATEGORY[categoryId].push(emoji);
-    }
-    // This is used as the string to match the query against when filtering emojis.
-    emoji.filterString = `${emoji.annotation}\n${emoji.shortcodes.join('\n')}}\n${emoji.emoticon || ''}`.toLowerCase();
-});
+import {DATA_BY_CATEGORY, getEmojiFromUnicode} from "../../../emoji";
 
 export const CATEGORY_HEADER_HEIGHT = 22;
 export const EMOJI_HEIGHT = 37;
@@ -91,7 +49,7 @@ class EmojiPicker extends React.Component {
 
         // Convert recent emoji characters to emoji data, removing unknowns.
         this.recentlyUsed = recent.get()
-            .map(unicode => DATA_BY_EMOJI[unicode])
+            .map(unicode => getEmojiFromUnicode(unicode))
             .filter(data => !!data);
         this.memoizedDataByCategory = {
             recent: this.recentlyUsed,

src/components/views/emojipicker/QuickReactions.js

@@ -19,15 +19,15 @@ import PropTypes from 'prop-types';
 
 import sdk from '../../../index';
 import { _t } from '../../../languageHandler';
-import { findEmojiData } from '../../../HtmlUtils';
+import {getEmojiFromUnicode} from "../../../emoji";
 
+// We use the variation-selector Heart in Quick Reactions for some reason
 const QUICK_REACTIONS = ["👍", "👎", "😄", "🎉", "😕", "❤️", "🚀", "👀"].map(emoji => {
-    const data = findEmojiData(emoji);
+    const data = getEmojiFromUnicode(emoji);
     if (!data) {
         throw new Error(`Emoji ${emoji} doesn't exist in emojibase`);
     }
-    // Prefer our unicode value for quick reactions (which does not have
-    // variation selectors).
+    // Prefer our unicode value for quick reactions as we sometimes use variation selectors.
     return Object.assign({}, data, { unicode: emoji });
 });
 

src/components/views/rooms/BasicMessageComposer.js

@@ -34,11 +34,11 @@ import {parsePlainTextMessage} from '../../../editor/deserialize';
 import {renderModel} from '../../../editor/render';
 import {Room} from 'matrix-js-sdk';
 import TypingStore from "../../../stores/TypingStore";
-import EMOJIBASE from 'emojibase-data/en/compact.json';
 import SettingsStore from "../../../settings/SettingsStore";
 import EMOTICON_REGEX from 'emojibase-regex/emoticon';
 import sdk from '../../../index';
 import {Key} from "../../../Keyboard";
+import {EMOTICON_TO_EMOJI} from "../../../emoji";
 
 const REGEX_EMOTICON_WHITESPACE = new RegExp('(?:^|\\s)(' + EMOTICON_REGEX.source + ')\\s$');
 
@@ -108,7 +108,8 @@ export default class BasicMessageEditor extends React.Component {
         const emoticonMatch = REGEX_EMOTICON_WHITESPACE.exec(range.text);
         if (emoticonMatch) {
             const query = emoticonMatch[1].toLowerCase().replace("-", "");
-            const data = EMOJIBASE.find(e => e.emoticon ? e.emoticon.toLowerCase() === query : false);
+            const data = EMOTICON_TO_EMOJI.get(query);
+
             if (data) {
                 const {partCreator} = model;
                 const hasPrecedingSpace = emoticonMatch[0][0] === " ";

src/components/views/rooms/MessageComposerInput.js

@@ -48,7 +48,6 @@ import Markdown from '../../../Markdown';
 import MessageComposerStore from '../../../stores/MessageComposerStore';
 import ContentMessages from '../../../ContentMessages';
 
-import EMOJIBASE from 'emojibase-data/en/compact.json';
 import EMOTICON_REGEX from 'emojibase-regex/emoticon';
 
 import SettingsStore, {SettingLevel} from "../../../settings/SettingsStore";
@@ -61,6 +60,7 @@ import AccessibleButton from '../elements/AccessibleButton';
 import {findEditableEvent} from '../../../utils/EventUtils';
 import SlateComposerHistoryManager from "../../../SlateComposerHistoryManager";
 import TypingStore from "../../../stores/TypingStore";
+import {EMOTICON_TO_EMOJI} from "../../../emoji";
 
 const REGEX_EMOTICON_WHITESPACE = new RegExp('(?:^|\\s)(' + EMOTICON_REGEX.source + ')\\s$');
 
@@ -464,7 +464,7 @@ export default class MessageComposerInput extends React.Component {
                 const emoticonMatch = REGEX_EMOTICON_WHITESPACE.exec(text.slice(0, currentStartOffset));
                 if (emoticonMatch) {
                     const query = emoticonMatch[1].toLowerCase().replace("-", "");
-                    const data = EMOJIBASE.find(e => e.emoticon ? e.emoticon.toLowerCase() === query : false);
+                    const data = EMOTICON_TO_EMOJI.get(query);
 
                     // only perform replacement if we found a match, otherwise we would be not letting user type
                     if (data) {

src/emoji.js

@@ -0,0 +1,82 @@
+/*
+Copyright 2019 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import EMOJIBASE from 'emojibase-data/en/compact.json';
+
+export const VARIATION_SELECTOR = String.fromCharCode(0xFE0F);
+
+// The unicode is stored without the variant selector
+const UNICODE_TO_EMOJI = new Map(); // not exported as gets for it are handled by getEmojiFromUnicode
+export const EMOTICON_TO_EMOJI = new Map();
+export const SHORTCODE_TO_EMOJI = new Map();
+
+export const getEmojiFromUnicode = unicode => UNICODE_TO_EMOJI.get(unicode.replace(VARIATION_SELECTOR, ""));
+
+const EMOJIBASE_GROUP_ID_TO_CATEGORY = [
+    "people", // smileys
+    "people", // actually people
+    "control", // modifiers and such, not displayed in picker
+    "nature",
+    "foods",
+    "places",
+    "activity",
+    "objects",
+    "symbols",
+    "flags",
+];
+
+export const DATA_BY_CATEGORY = {
+    "people": [],
+    "nature": [],
+    "foods": [],
+    "places": [],
+    "activity": [],
+    "objects": [],
+    "symbols": [],
+    "flags": [],
+};
+
+// Store various mappings from unicode/emoticon/shortcode to the Emoji objects
+EMOJIBASE.forEach(emoji => {
+    if (emoji.unicode.includes(VARIATION_SELECTOR)) {
+        // Clone data into variation-less version
+        emoji = Object.assign({}, emoji, {
+            unicode: emoji.unicode.replace(VARIATION_SELECTOR, ""),
+        });
+    }
+
+    const categoryId = EMOJIBASE_GROUP_ID_TO_CATEGORY[emoji.group];
+    if (DATA_BY_CATEGORY.hasOwnProperty(categoryId)) {
+        DATA_BY_CATEGORY[categoryId].push(emoji);
+    }
+    // This is used as the string to match the query against when filtering emojis
+    emoji.filterString = `${emoji.annotation}\n${emoji.shortcodes.join('\n')}}\n${emoji.emoticon || ''}`.toLowerCase();
+
+    // Add mapping from unicode to Emoji object
+    UNICODE_TO_EMOJI.set(emoji.unicode, emoji);
+
+    if (emoji.emoticon) {
+        // Add mapping from emoticon to Emoji object
+        EMOTICON_TO_EMOJI.set(emoji.emoticon, emoji);
+    }
+
+    if (emoji.shortcodes) {
+        // Add mapping from each shortcode to Emoji object
+        emoji.shortcodes.forEach(shortcode => {
+            SHORTCODE_TO_EMOJI.set(shortcode, emoji);
+        });
+    }
+});