]>
Commit | Line | Data |
---|---|---|
9bf9d2a5 C |
1 | import { Pipe, PipeTransform } from '@angular/core' |
2 | ||
94676e63 | 3 | // Thanks: https://github.com/danrevah/ngx-pipes/blob/master/src/ng-pipes/pipes/math/bytes.ts |
9bf9d2a5 | 4 | |
be447678 | 5 | @Pipe({ name: 'myNumberFormatter' }) |
9bf9d2a5 C |
6 | export class NumberFormatterPipe implements PipeTransform { |
7 | private dictionary: Array<{max: number, type: string}> = [ | |
8 | { max: 1000, type: '' }, | |
9 | { max: 1000000, type: 'K' }, | |
10 | { max: 1000000000, type: 'M' } | |
11 | ] | |
12 | ||
22078471 RK |
13 | /** |
14 | * @param x number | |
15 | * @param n number of decimals to get (defaults to 1, needs to be >= 1) | |
16 | */ | |
17 | static getDecimalForNumber (x: number, n = 1) { | |
18 | const v = x.toString().split('.') | |
19 | const f = v[1] || '' | |
20 | if (f.length > n) return +f.substr(0, n) | |
21 | return +f | |
22 | } | |
23 | ||
9bf9d2a5 C |
24 | transform (value: number) { |
25 | const format = this.dictionary.find(d => value < d.max) || this.dictionary[this.dictionary.length - 1] | |
22078471 RK |
26 | const calc = value / (format.max / 1000) |
27 | const integralPart = Math.floor(calc) | |
28 | const decimalPart = NumberFormatterPipe.getDecimalForNumber(calc) | |
9bf9d2a5 | 29 | |
22078471 RK |
30 | return integralPart < 10 && decimalPart > 0 |
31 | ? `${integralPart}.${decimalPart}${format.type}` | |
32 | : `${integralPart}${format.type}` | |
9bf9d2a5 C |
33 | } |
34 | } |