getInitials: handle more cases
See [#5029]][0]. [0]: https://github.com/signalapp/Signal-Desktop/pull/5029
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2 changed files with 81 additions and 12 deletions
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@ -1,24 +1,31 @@
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// Copyright 2018-2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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const BAD_CHARACTERS = /[^A-Za-z\s]+/g;
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const WHITESPACE = /\s+/g;
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function removeNonInitials(name: string) {
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return name.replace(BAD_CHARACTERS, '').replace(WHITESPACE, ' ');
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}
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export function getInitials(name?: string): string | undefined {
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if (!name) {
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return undefined;
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}
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const cleaned = removeNonInitials(name);
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const parts = cleaned.split(' ');
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const initials = parts.map(part => part.trim()[0]);
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if (!initials.length) {
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const parsedName = name
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// remove all chars that are not letters or separators
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.replace(/[^\p{L}\p{Z}]+/gu, '')
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// replace all chars that are separators with a single ASCII space
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.replace(/\p{Z}+/gu, ' ')
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.trim();
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if (!parsedName) {
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return undefined;
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}
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return initials.slice(0, 2).join('');
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// check if chars in the parsed string are initials
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if (parsedName.length === 2 && parsedName === parsedName.toUpperCase()) {
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return parsedName;
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}
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const parts = parsedName.toUpperCase().split(' ');
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const partsLen = parts.length;
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return partsLen === 1
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? parts[0].charAt(0)
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: parts[0].charAt(0) + parts[partsLen - 1].charAt(0);
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}
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