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24 lines
696 B
24 lines
696 B
8 months ago
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export function ArrayBufferToBase64 (buffer) {
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var binary = '';
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var bytes = new Uint8ClampedArray(buffer);
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for (var len = bytes.byteLength, i = 0; i < len; i++) {
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binary += String.fromCharCode(bytes[i]);
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}
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return btoa(binary);
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}
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export function Base64ToUint8ClampedArray(base64String) {
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const padding = '='.repeat((4 - base64String.length % 4) % 4);
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const base64 = (base64String + padding)
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.replace(/\-/g, '+')
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.replace(/_/g, '/');
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const rawData = atob(base64);
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const outputArray = new Uint8ClampedArray(rawData.length);
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for (let i = 0; i < rawData.length; ++i) {
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outputArray[i] = rawData.charCodeAt(i);
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}
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return outputArray;
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}
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