72 lines
2.1 KiB
JavaScript
72 lines
2.1 KiB
JavaScript
|
import Base64 from './utils/Base64';
|
||
|
|
|
||
|
|
type BlobFormat = 'string' | 'array';
|
||
|
|
|
||
|
|
export default class Blob {
|
||
|
|
constructor(data, type: BlobFormat) {
|
||
|
|
this._data = data;
|
||
|
|
this._type = type;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new Blob from the given Base64 string
|
||
|
|
* @url https://firebase.google.com/docs/reference/js/firebase.firestore.Blob#.fromBase64String
|
||
|
|
* @param base64 string
|
||
|
|
*/
|
||
|
|
static fromBase64String(base64: string): Blob {
|
||
|
|
// TODO convert to Uint8Array?
|
||
|
|
return new Blob(base64, 'string');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new Blob from the given Uint8Array.
|
||
|
|
* @url https://firebase.google.com/docs/reference/js/firebase.firestore.Blob#.fromUint8Array
|
||
|
|
* @param array Array
|
||
|
|
*/
|
||
|
|
static fromUint8Array(array: Array): Blob {
|
||
|
|
return new Blob(array, 'array');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns 'true' if this Blob is equal to the provided one.
|
||
|
|
* @url https://firebase.google.com/docs/reference/js/firebase.firestore.Blob#isEqual
|
||
|
|
* @param {*} blob Blob The Blob to compare against. Value must not be null.
|
||
|
|
* @returns boolean 'true' if this Blob is equal to the provided one.
|
||
|
|
*/
|
||
|
|
isEqual(blob: Blob): boolean {
|
||
|
|
// TODO comparison checks
|
||
|
|
console.log(blob);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the bytes of a Blob as a Base64-encoded string.
|
||
|
|
* @url https://firebase.google.com/docs/reference/js/firebase.firestore.Blob#toBase64
|
||
|
|
* @returns string The Base64-encoded string created from the Blob object.
|
||
|
|
*/
|
||
|
|
toBase64(): string {
|
||
|
|
if (this._type === 'string') return this._data;
|
||
|
|
|
||
|
|
let binary = '';
|
||
|
|
const len = this._data.byteLength;
|
||
|
|
for (let i = 0; i < len; i++) {
|
||
|
|
binary += String.fromCharCode(this._data[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
return Base64.btoa(binary);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the bytes of a Blob in a new Uint8Array.
|
||
|
|
* @url https://firebase.google.com/docs/reference/js/firebase.firestore.Blob#toUint8Array
|
||
|
|
* @returns non-null Uint8Array The Uint8Array created from the Blob object.
|
||
|
|
*/
|
||
|
|
toUint8Array(): Uint8Array {
|
||
|
|
if (this._type === 'array') return this._data;
|
||
|
|
// TODO conversion
|
||
|
|
// TODO conversion
|
||
|
|
// TODO conversion
|
||
|
|
return new Uint8Array();
|
||
|
|
}
|
||
|
|
}
|