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54 lines
1.3 KiB
54 lines
1.3 KiB
3 years ago
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'use strict';
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import AxiosError from '../core/AxiosError.js';
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import parseProtocol from './parseProtocol.js';
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import platform from '../platform/index.js';
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const DATA_URL_PATTERN = /^(?:([^;]+);)?(?:[^;]+;)?(base64|),([\s\S]*)$/;
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/**
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* Parse data uri to a Buffer or Blob
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*
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* @param {String} uri
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* @param {?Boolean} asBlob
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* @param {?Object} options
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* @param {?Function} options.Blob
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*
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* @returns {Buffer|Blob}
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*/
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export default function fromDataURI(uri, asBlob, options) {
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const _Blob = options && options.Blob || platform.classes.Blob;
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const protocol = parseProtocol(uri);
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if (asBlob === undefined && _Blob) {
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asBlob = true;
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}
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if (protocol === 'data') {
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uri = protocol.length ? uri.slice(protocol.length + 1) : uri;
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const match = DATA_URL_PATTERN.exec(uri);
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if (!match) {
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throw new AxiosError('Invalid URL', AxiosError.ERR_INVALID_URL);
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}
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const mime = match[1];
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const isBase64 = match[2];
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const body = match[3];
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const buffer = Buffer.from(decodeURIComponent(body), isBase64 ? 'base64' : 'utf8');
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if (asBlob) {
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if (!_Blob) {
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throw new AxiosError('Blob is not supported', AxiosError.ERR_NOT_SUPPORT);
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}
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return new _Blob([buffer], {type: mime});
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}
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return buffer;
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}
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throw new AxiosError('Unsupported protocol ' + protocol, AxiosError.ERR_NOT_SUPPORT);
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}
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