mirror of https://github.com/openclaw/openclaw.git
47 lines
1.1 KiB
TypeScript
47 lines
1.1 KiB
TypeScript
export type BytesParseOptions = {
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defaultUnit?: "b" | "kb" | "mb" | "gb" | "tb";
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};
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const UNIT_MULTIPLIERS: Record<string, number> = {
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b: 1,
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kb: 1024,
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k: 1024,
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mb: 1024 ** 2,
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m: 1024 ** 2,
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gb: 1024 ** 3,
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g: 1024 ** 3,
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tb: 1024 ** 4,
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t: 1024 ** 4,
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};
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export function parseByteSize(raw: string, opts?: BytesParseOptions): number {
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const trimmed = String(raw ?? "")
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.trim()
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.toLowerCase();
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if (!trimmed) {
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throw new Error("invalid byte size (empty)");
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}
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const m = /^(\d+(?:\.\d+)?)([a-z]+)?$/.exec(trimmed);
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if (!m) {
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throw new Error(`invalid byte size: ${raw}`);
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}
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const value = Number(m[1]);
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if (!Number.isFinite(value) || value < 0) {
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throw new Error(`invalid byte size: ${raw}`);
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}
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const unit = (m[2] ?? opts?.defaultUnit ?? "b").toLowerCase();
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const multiplier = UNIT_MULTIPLIERS[unit];
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if (!multiplier) {
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throw new Error(`invalid byte size unit: ${raw}`);
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}
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const bytes = Math.round(value * multiplier);
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if (!Number.isFinite(bytes)) {
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throw new Error(`invalid byte size: ${raw}`);
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}
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return bytes;
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}
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