mirror of https://git.lenooby09.tech/LeNooby09/social-app.git
lenooby09.tech
1export function enforceLen(
2 str: string,
3 len: number,
4 ellipsis = false,
5 mode: 'end' | 'middle' = 'end',
6): string {
7 str = str || ''
8 if (str.length > len) {
9 if (ellipsis) {
10 if (mode === 'end') {
11 return str.slice(0, len) + '…'
12 } else if (mode === 'middle') {
13 const half = Math.floor(len / 2)
14 return str.slice(0, half) + '…' + str.slice(-half)
15 } else {
16 // fallback
17 return str.slice(0, len)
18 }
19 } else {
20 return str.slice(0, len)
21 }
22 }
23 return str
24}
25
26// https://stackoverflow.com/a/52171480
27export function toHashCode(str: string, seed = 0): number {
28 let h1 = 0xdeadbeef ^ seed,
29 h2 = 0x41c6ce57 ^ seed
30 for (let i = 0, ch; i < str.length; i++) {
31 ch = str.charCodeAt(i)
32 h1 = Math.imul(h1 ^ ch, 2654435761)
33 h2 = Math.imul(h2 ^ ch, 1597334677)
34 }
35 h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507)
36 h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909)
37 h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507)
38 h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909)
39
40 return 4294967296 * (2097151 & h2) + (h1 >>> 0)
41}
42
43export function countLines(str: string | undefined): number {
44 if (!str) return 0
45 return str.match(/\n/g)?.length ?? 0
46}
47
48// Augments search query with additional syntax like `from:me`
49export function augmentSearchQuery(query: string, {did}: {did?: string}) {
50 // Don't do anything if there's no DID
51 if (!did) {
52 return query
53 }
54
55 // We don't want to replace substrings that are being "quoted" because those
56 // are exact string matches, so what we'll do here is to split them apart
57
58 // Even-indexed strings are unquoted, odd-indexed strings are quoted
59 const splits = query.split(/("(?:[^"\\]|\\.)*")/g)
60
61 return splits
62 .map((str, idx) => {
63 if (idx % 2 === 0) {
64 return str.replaceAll(/(^|\s)from:me(\s|$)/g, `$1${did}$2`)
65 }
66
67 return str
68 })
69 .join('')
70}