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-rw-r--r--client/src/app/shared/shared-main/angular/bytes.pipe.ts34
1 files changed, 34 insertions, 0 deletions
diff --git a/client/src/app/shared/shared-main/angular/bytes.pipe.ts b/client/src/app/shared/shared-main/angular/bytes.pipe.ts
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1import { Pipe, PipeTransform } from '@angular/core'
2
3// Thanks: https://github.com/danrevah/ngx-pipes/blob/master/src/ng-pipes/pipes/math/bytes.ts
4
5@Pipe({ name: 'bytes' })
6export class BytesPipe implements PipeTransform {
7 private dictionary: Array<{ max: number; type: string }> = [
8 { max: 1024, type: 'B' },
9 { max: 1048576, type: 'KB' },
10 { max: 1073741824, type: 'MB' },
11 { max: 1.0995116e12, type: 'GB' }
12 ]
13
14 transform (value: number, precision?: number | undefined): string | number {
15 const format = this.dictionary.find(d => value < d.max) || this.dictionary[this.dictionary.length - 1]
16 const calc = value / (format.max / 1024)
17
18 const num = precision === undefined
19 ? calc
20 : applyPrecision(calc, precision)
21
22 return `${num} ${format.type}`
23 }
24}
25
26function applyPrecision (num: number, precision: number) {
27 if (precision <= 0) {
28 return Math.round(num)
29 }
30
31 const tho = 10 ** precision
32
33 return Math.round(num * tho) / tho
34}