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