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@@ -9,4 +9,4 @@ app/node_modules/ | |
| .idea/ | ||
| .vs/ | ||
| .eslintcache | ||
| *.iml | ||
| *.iml | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,50 +1,27 @@ | ||
| /** | ||
| * Manipulate bytes for displaying purposes. | ||
| * Number sign display mode | ||
| */ | ||
| export class Bytes { | ||
| public readonly bytes: number | ||
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|
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| public constructor(bytes: number) { | ||
| this.bytes = bytes | ||
| } | ||
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| /** | ||
| * Display bytes in human readable format like: | ||
| * - 23gb | ||
| * - 43bytes | ||
| * @param {boolean} forceSign Show `+123kb` instead of `123kb` | ||
| * @return {string} formatted string | ||
| */ | ||
| public format(forceSign: boolean = false) { | ||
| if (!Number.isFinite(this.bytes)) { | ||
| return 'Unknown' | ||
| } | ||
| const sizes = ['bytes', 'kb', 'mb', 'gb', 'tb'] | ||
| const i = Math.floor(Math.log(Math.abs(this.bytes)) / Math.log(1024)) | ||
| const sign = forceSign && this.bytes > 0 ? '+' : '' | ||
| const value = Math.round(this.bytes / Math.pow(1024, i)) | ||
| return `${sign}${value}${sizes[i]}` | ||
| } | ||
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| /** | ||
| * Creates new Bytes object by adding or subtracting the bytes from | ||
| * current instance. | ||
| * | ||
| * @param {number} bytes Amount of bytes to add/remove | ||
| * @return {Bytes} New Bytes object. | ||
| */ | ||
| public diff(bytes: number) { | ||
| return new Bytes(bytes - this.bytes) | ||
| } | ||
| const enum Sign { | ||
| Normal, | ||
| Forced | ||
| } | ||
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| /** | ||
| * Display difference percentage in comparison to provided number | ||
| * of bytes. | ||
| * @param {number} bytes Number of bytes. | ||
| * @return {string} Percentage difference like 45% | ||
| */ | ||
| public percentDiff(bytes: number) { | ||
| const diff = Math.round(100 * (bytes - this.bytes) / this.bytes) | ||
| return `${diff}%` | ||
| /** | ||
| * Display bytes in human readable format like: | ||
| * 23GB | ||
| * -43B | ||
| * It's also possible to force sign in order to get the | ||
| * plus sign in case of positive numbers like: | ||
| * +23GB | ||
| * -43B | ||
| */ | ||
| export const formatBytes = (bytes: number, signType: Sign = Sign.Normal) => { | ||
| if (!Number.isFinite(bytes)) { | ||
| return 'Unknown' | ||
| } | ||
| } | ||
| const sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'] | ||
| const sizeIndex = Math.floor(Math.log(Math.abs(bytes)) / Math.log(1024)) | ||
| const sign = signType == Sign.Forced && bytes > 0 ? '+' : '' | ||
| const value = Math.round(bytes / Math.pow(1024, sizeIndex)) | ||
| return `${sign}${value}${sizes[sizeIndex]}` | ||
| } |