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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | 5x 5x 5x 5x 5x 42x 42x 42x 42x 42x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 12x 11x 9x 2x 7x 13x 12x 2x 10x | import { CoreFileSystemHandle } from './CoreFileSystemHandle';
import { CoreFileSystemSyncAccessHandle } from './CoreFileSystemSyncAccessHandle';
import { assertCanWrite, basename, ctx as createCtx, newNotAllowedError, newNoModificationAllowedError } from './util';
import { CoreFileSystemWritableFileStream } from './CoreFileSystemWritableFileStream';
import type {
CoreFsaContext,
CreateWritableOptions,
IFileSystemFileHandle,
IFileSystemSyncAccessHandle,
} from './types';
import type { Superblock } from '../core/Superblock';
import { ERROR_CODE } from '../core/constants';
export class CoreFileSystemFileHandle extends CoreFileSystemHandle implements IFileSystemFileHandle {
protected readonly ctx: CoreFsaContext;
constructor(
protected readonly _core: Superblock,
public readonly __path: string,
ctx: Partial<CoreFsaContext> = {},
) {
const fullCtx = createCtx(ctx);
super('file', basename(__path, fullCtx.separator), fullCtx);
this.ctx = fullCtx;
}
/**
* Returns a {@link Promise} which resolves to a {@link File} object
* representing the state on disk of the entry represented by the handle.
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/getFile
*/
public async getFile(): Promise<File> {
try {
const path = this.__path;
const link = this._core.getResolvedLinkOrThrow(path);
const node = link.getNode();
Iif (!node.isFile()) {
throw new Error('Not a file');
}
// Get file stats for lastModified
const lastModified = node.mtime ? node.mtime.getTime() : Date.now();
// Read file content
const buffer = node.getBuffer();
const data = new Uint8Array(buffer);
const file = new File([data], this.name, { lastModified });
return file;
} catch (error) {
Iif (error instanceof DOMException) throw error;
Iif (error && typeof error === 'object') {
switch (error.code) {
case ERROR_CODE.EACCES:
throw newNotAllowedError();
}
}
throw error;
}
}
/**
* @see https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/createSyncAccessHandle
*/
public get createSyncAccessHandle(): undefined | (() => Promise<IFileSystemSyncAccessHandle>) {
if (!this.ctx.syncHandleAllowed) return undefined;
return async () => {
if (this.ctx.locks.isLocked(this.__path)) {
throw newNoModificationAllowedError();
}
return new CoreFileSystemSyncAccessHandle(this._core, this.__path, this.ctx);
};
}
/**
* @see https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/createWritable
*/
public async createWritable(
{ keepExistingData = false }: CreateWritableOptions = { keepExistingData: false },
): Promise<CoreFileSystemWritableFileStream> {
assertCanWrite(this.ctx.mode);
if (this.ctx.locks.isLocked(this.__path)) {
throw newNoModificationAllowedError();
}
return new CoreFileSystemWritableFileStream(this._core, this.__path, keepExistingData, this.ctx);
}
}
|