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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
this.blobConverters = (function() {
const exports = {};
exports.dataUrlToBlob = function(url) {
const binary = atob(url.split(",", 2)[1]);
let contentType = exports.getTypeFromDataUrl(url);
if (contentType !== "image/png" && contentType !== "image/jpeg") {
contentType = "image/png";
}
const data = Uint8Array.from(binary, char => char.charCodeAt(0));
const blob = new Blob([data], { type: contentType });
return blob;
};
exports.getTypeFromDataUrl = function(url) {
let contentType = url.split(",", 1)[0];
contentType = contentType.split(";", 1)[0];
contentType = contentType.split(":", 2)[1];
return contentType;
};
exports.blobToArray = function(blob) {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.addEventListener("loadend", function() {
resolve(reader.result);
});
reader.readAsArrayBuffer(blob);
});
};
exports.blobToDataUrl = function(blob) {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.addEventListener("loadend", function() {
resolve(reader.result);
});
reader.readAsDataURL(blob);
});
};
return exports;
})();
null;
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