Files
bsky-social-app/src/lib/strings/helpers.ts
T
Samuel Newman 9743149c26 Replace graphemer with unicode-segmenter (#9526)
* replace graphemer with unicode-segmenter

* use grapheme entrypoint

* force resolution of unicode-segmenter
2025-12-30 03:39:09 -08:00

77 lines
1.9 KiB
TypeScript

import {type RichText} from '@atproto/api'
import {countGraphemes} from 'unicode-segmenter/grapheme'
import {shortenLinks} from './rich-text-manip'
export function enforceLen(
str: string,
len: number,
ellipsis = false,
mode: 'end' | 'middle' = 'end',
): string {
str = str || ''
if (str.length > len) {
if (ellipsis) {
if (mode === 'end') {
return str.slice(0, len) + '…'
} else if (mode === 'middle') {
const half = Math.floor(len / 2)
return str.slice(0, half) + '…' + str.slice(-half)
} else {
// fallback
return str.slice(0, len)
}
} else {
return str.slice(0, len)
}
}
return str
}
export function isOverMaxGraphemeCount({
text,
maxCount,
}: {
text: string | RichText
maxCount: number
}) {
if (typeof text === 'string') {
return countGraphemes(text) > maxCount
} else {
return shortenLinks(text).graphemeLength > maxCount
}
}
export function countLines(str: string | undefined): number {
if (!str) return 0
return str.match(/\n/g)?.length ?? 0
}
// Augments search query with additional syntax like `from:me`
export function augmentSearchQuery(query: string, {did}: {did?: string}) {
// Don't do anything if there's no DID
if (!did) {
return query
}
// replace “smart quotes” with normal ones
// iOS keyboard will add fancy unicode quotes, but only normal ones work
query = query.replaceAll(/[“”]/g, '"')
// We don't want to replace substrings that are being "quoted" because those
// are exact string matches, so what we'll do here is to split them apart
// Even-indexed strings are unquoted, odd-indexed strings are quoted
const splits = query.split(/("(?:[^"\\]|\\.)*")/g)
return splits
.map((str, idx) => {
if (idx % 2 === 0) {
return str.replaceAll(/(^|\s)from:me(\s|$)/g, `$1${did}$2`)
}
return str
})
.join('')
}