Created
April 21, 2023 23:43
-
-
Save okikio/a6247ec4fc05b7b31f7eee75a3c33630 to your computer and use it in GitHub Desktop.
opfs.ts - API
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| const isWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope; | |
| async function getHandleFromPath(path: string) { | |
| const pathParts = path.split('/').filter(part => part.length > 0); | |
| let currentHandle = await navigator.storage.getDirectory(); | |
| for (const part of pathParts) { | |
| if (part === '..') { | |
| currentHandle = await currentHandle.getParent(); | |
| } else { | |
| currentHandle = await currentHandle.getDirectoryHandle(part, { create: true }); | |
| } | |
| } | |
| return currentHandle; | |
| } | |
| async function getFileHandleFromPath(path: string) { | |
| const pathParts = path.split('/').filter(part => part.length > 0); | |
| const fileName = pathParts.pop(); | |
| const dirHandle = await getHandleFromPath(pathParts.join('/')); | |
| return await dirHandle.getFileHandle(fileName); | |
| } | |
| export const FS = { | |
| writeFile: async (fileName: string, binaryData: Uint8Array | string): Promise<void> => { | |
| const fileHandle = await getFileHandleFromPath(fileName); | |
| const accessHandle = await getFileAccessHandle(fileHandle); | |
| const encoder = new TextEncoder(); | |
| const encodedData = encoder.encode(binaryData); | |
| if (isWorker) { | |
| accessHandle.write(encodedData, { at: 0 }); | |
| accessHandle.flush(); | |
| accessHandle.close(); | |
| } else { | |
| await accessHandle.write(encodedData); | |
| await accessHandle.close(); | |
| } | |
| }, | |
| readFile: async (fileName: string): Promise<Uint8Array> => { | |
| const fileHandle = await getFileHandleFromPath(fileName); | |
| const accessHandle = await getFileAccessHandle(fileHandle); | |
| let fileSize; | |
| let buffer; | |
| if (isWorker) { | |
| fileSize = accessHandle.getSize(); | |
| buffer = new DataView(new ArrayBuffer(fileSize)); | |
| accessHandle.read(buffer, { at: 0 }); | |
| accessHandle.close(); | |
| } else { | |
| const file = await fileHandle.getFile(); | |
| fileSize = file.size; | |
| buffer = new Uint8Array(fileSize); | |
| await file.arrayBuffer().then(data => buffer.set(new Uint8Array(data))); | |
| } | |
| return new Uint8Array(buffer.buffer); | |
| }, | |
| readdir: async (pathName: string): Promise<string[]> => { | |
| const dirHandle = await getHandleFromPath(pathName); | |
| const entries = []; | |
| for await (const entry of dirHandle.values()) { | |
| entries.push(entry.name); | |
| } | |
| return entries; | |
| }, | |
| // Update the unlink function | |
| unlink: async (fileName: string): Promise<void> => { | |
| const fileHandle = await getFileHandleFromPath(fileName); | |
| await fileHandle.removeEntry(fileName); | |
| }, | |
| mkdir: async (fileName: string): Promise<void> => { | |
| await getHandleFromPath(fileName); | |
| }, | |
| }; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment