Elijah
724d70e58b
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34 lines
No EOL
1.1 KiB
JavaScript
34 lines
No EOL
1.1 KiB
JavaScript
import isReactNative from './isReactNative.js';
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// TODO: Differenciate between input types
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/**
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* Generate a fingerprint for a file which will be used the store the endpoint
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*
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* @param {File} file
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* @param {Object} options
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* @param {Function} callback
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*/
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export default function fingerprint(file, options) {
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if (isReactNative()) {
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return Promise.resolve(reactNativeFingerprint(file, options));
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}
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return Promise.resolve(['tus-br', file.name, file.type, file.size, file.lastModified, options.endpoint].join('-'));
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}
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function reactNativeFingerprint(file, options) {
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var exifHash = file.exif ? hashCode(JSON.stringify(file.exif)) : 'noexif';
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return ['tus-rn', file.name || 'noname', file.size || 'nosize', exifHash, options.endpoint].join('/');
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}
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function hashCode(str) {
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// from https://stackoverflow.com/a/8831937/151666
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var hash = 0;
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if (str.length === 0) {
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return hash;
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}
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for (var i = 0; i < str.length; i++) {
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var _char = str.charCodeAt(i);
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hash = (hash << 5) - hash + _char;
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hash &= hash; // Convert to 32bit integer
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}
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return hash;
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} |