27 lines
792 B
JavaScript
27 lines
792 B
JavaScript
// from blob-util
|
|
function blobToBinaryString(blob) {
|
|
return new Promise(function (resolve, reject) {
|
|
var reader = new FileReader();
|
|
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
|
|
reader.onloadend = function (e) {
|
|
var result = e.target.result || '';
|
|
if (hasBinaryString) {
|
|
return resolve(result);
|
|
}
|
|
resolve(arrayBufferToBinaryString(result));
|
|
};
|
|
reader.onerror = reject;
|
|
if (hasBinaryString) {
|
|
reader.readAsBinaryString(blob);
|
|
} else {
|
|
reader.readAsArrayBuffer(blob);
|
|
}
|
|
});
|
|
}
|
|
|
|
export function blobToBase64(blob) {
|
|
return blobToBinaryString(blob).then(function (binary) {
|
|
// web-safe variant
|
|
return btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
|
|
});
|
|
} |