| /** |
| * @license |
| * Copyright 2022 The Emscripten Authors |
| * SPDX-License-Identifier: MIT |
| */ |
| |
| mergeInto(LibraryManager.library, { |
| // TODO: Generate these ID pools from a common utility. |
| $wasmfsOPFSDirectoryHandles: { |
| allocated: [], |
| free: [], |
| get: function(i) { |
| #if ASSERTIONS |
| assert(this.allocated[i] !== undefined); |
| #endif |
| return this.allocated[i]; |
| } |
| }, |
| |
| $wasmfsOPFSFileHandles: { |
| allocated: [], |
| free: [], |
| get: function(i) { |
| #if ASSERTIONS |
| assert(this.allocated[i] !== undefined); |
| #endif |
| return this.allocated[i]; |
| } |
| }, |
| |
| $wasmfsOPFSAccessHandles: { |
| allocated: [], |
| free: [], |
| get: function(i) { |
| #if ASSERTIONS |
| assert(this.allocated[i] !== undefined); |
| #endif |
| return this.allocated[i]; |
| } |
| }, |
| |
| $wasmfsOPFSBlobs: { |
| allocated: [], |
| free: [], |
| get: function(i) { |
| #if ASSERTIONS |
| assert(this.allocated[i] !== undefined); |
| #endif |
| return this.allocated[i]; |
| } |
| }, |
| |
| $wasmfsOPFSAllocate: function(ids, handle) { |
| let id; |
| if (ids.free.length > 0) { |
| id = ids.free.pop(); |
| ids.allocated[id] = handle; |
| } else { |
| id = ids.allocated.length; |
| ids.allocated.push(handle); |
| } |
| return id; |
| }, |
| |
| $wasmfsOPFSFree: function(ids, id) { |
| #if ASSERTIONS |
| assert(ids.allocated[id] !== undefined); |
| #endif |
| delete ids.allocated[id]; |
| ids.free.push(id); |
| }, |
| |
| _wasmfs_opfs_init_root_directory__deps: ['$wasmfsOPFSDirectoryHandles'], |
| _wasmfs_opfs_init_root_directory: async function(ctx) { |
| if (wasmfsOPFSDirectoryHandles.allocated.length == 0) { |
| // Directory 0 is reserved as the root |
| let root = await navigator.storage.getDirectory(); |
| wasmfsOPFSDirectoryHandles.allocated.push(root); |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| // Return the file ID for the file with `name` under `parent`, creating it if |
| // it doesn't exist and `create` or otherwise return a negative error code |
| // corresponding to the error. |
| $wasmfsOPFSGetOrCreateFile__deps: ['$wasmfsOPFSAllocate', |
| '$wasmfsOPFSDirectoryHandles', |
| '$wasmfsOPFSFileHandles'], |
| $wasmfsOPFSGetOrCreateFile: async function(parent, name, create) { |
| let parentHandle = wasmfsOPFSDirectoryHandles.get(parent); |
| let fileHandle; |
| try { |
| fileHandle = await parentHandle.getFileHandle(name, {create: create}); |
| } catch (e) { |
| if (e.name === "NotFoundError") { |
| return -{{{ cDefine('EEXIST') }}}; |
| } |
| if (e.name === "TypeMismatchError") { |
| return -{{{ cDefine('EISDIR') }}}; |
| } |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| return -{{{ cDefine('EIO') }}}; |
| } |
| return wasmfsOPFSAllocate(wasmfsOPFSFileHandles, fileHandle); |
| }, |
| |
| // Return the file ID for the directory with `name` under `parent`, creating |
| // it if it doesn't exist and `create` or otherwise return a negative error |
| // code corresponding to the error. |
| $wasmfsOPFSGetOrCreateDir__deps: ['$wasmfsOPFSAllocate', |
| '$wasmfsOPFSDirectoryHandles'], |
| $wasmfsOPFSGetOrCreateDir: async function(parent, name, create) { |
| let parentHandle = wasmfsOPFSDirectoryHandles.get(parent); |
| let childHandle; |
| try { |
| childHandle = |
| await parentHandle.getDirectoryHandle(name, {create: create}); |
| } catch (e) { |
| if (e.name === "NotFoundError") { |
| return -{{{ cDefine('EEXIST') }}}; |
| } |
| if (e.name === "TypeMismatchError") { |
| return -{{{ cDefine('ENOTDIR') }}}; |
| } |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| return -{{{ cDefine('EIO') }}}; |
| } |
| return wasmfsOPFSAllocate(wasmfsOPFSDirectoryHandles, childHandle); |
| }, |
| |
| _wasmfs_opfs_get_child__deps: ['$wasmfsOPFSGetOrCreateFile', |
| '$wasmfsOPFSGetOrCreateDir'], |
| _wasmfs_opfs_get_child: |
| async function(ctx, parent, namePtr, childTypePtr, childIDPtr) { |
| let name = UTF8ToString(namePtr); |
| let childType = 1; |
| let childID = await wasmfsOPFSGetOrCreateFile(parent, name, false); |
| if (childID == -{{{ cDefine('EISDIR') }}}) { |
| childType = 2; |
| childID = await wasmfsOPFSGetOrCreateDir(parent, name, false); |
| } |
| {{{ makeSetValue('childTypePtr', 0, 'childType', 'i32') }}}; |
| {{{ makeSetValue('childIDPtr', 0, 'childID', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_get_entries__deps: [], |
| _wasmfs_opfs_get_entries: async function(ctx, dirID, entriesPtr, errPtr) { |
| let dirHandle = wasmfsOPFSDirectoryHandles.get(dirID); |
| |
| // TODO: Use 'for await' once Acorn supports that. |
| try { |
| let iter = dirHandle.entries(); |
| for (let entry; entry = await iter.next(), !entry.done;) { |
| let [name, child] = entry.value; |
| withStackSave(() => { |
| let namePtr = allocateUTF8OnStack(name); |
| let type = child.kind == "file" ? |
| {{{ cDefine('File::DataFileKind') }}} : |
| {{{ cDefine('File::DirectoryKind') }}}; |
| __wasmfs_opfs_record_entry(entriesPtr, namePtr, type) |
| }); |
| } |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_insert_file__deps: ['$wasmfsOPFSGetOrCreateFile'], |
| _wasmfs_opfs_insert_file: async function(ctx, parent, namePtr, childIDPtr) { |
| let name = UTF8ToString(namePtr); |
| let childID = await wasmfsOPFSGetOrCreateFile(parent, name, true); |
| {{{ makeSetValue('childIDPtr', 0, 'childID', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_insert_directory__deps: ['$wasmfsOPFSGetOrCreateDir'], |
| _wasmfs_opfs_insert_directory: |
| async function(ctx, parent, namePtr, childIDPtr) { |
| let name = UTF8ToString(namePtr); |
| let childID = await wasmfsOPFSGetOrCreateDir(parent, name, true); |
| {{{ makeSetValue('childIDPtr', 0, 'childID', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_move__deps: ['$wasmfsOPFSFileHandles', |
| '$wasmfsOPFSDirectoryHandles'], |
| _wasmfs_opfs_move: async function(ctx, fileID, newDirID, namePtr, errPtr) { |
| let name = UTF8ToString(namePtr); |
| let fileHandle = wasmfsOPFSFileHandles.get(fileID); |
| let newDirHandle = wasmfsOPFSDirectoryHandles.get(newDirID); |
| try { |
| await fileHandle.move(newDirHandle, name); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_remove_child__deps: ['$wasmfsOPFSFree', |
| '$wasmfsOPFSDirectoryHandles'], |
| _wasmfs_opfs_remove_child: async function(ctx, dirID, namePtr, errPtr) { |
| let name = UTF8ToString(namePtr); |
| let dirHandle = wasmfsOPFSDirectoryHandles.get(dirID); |
| try { |
| await dirHandle.removeEntry(name); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_free_file__deps: ['$wasmfsOPFSFree', '$wasmfsOPFSFileHandles'], |
| _wasmfs_opfs_free_file: function(fileID) { |
| wasmfsOPFSFree(wasmfsOPFSFileHandles, fileID); |
| }, |
| |
| _wasmfs_opfs_free_directory__deps: ['$wasmfsOPFSFree', |
| '$wasmfsOPFSDirectoryHandles'], |
| _wasmfs_opfs_free_directory: function(dirID) { |
| wasmfsOPFSFree(wasmfsOPFSDirectoryHandles, dirID); |
| }, |
| |
| _wasmfs_opfs_open_access__deps: ['$wasmfsOPFSAllocate', |
| '$wasmfsOPFSFileHandles', |
| '$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_open_access: async function(ctx, fileID, accessIDPtr) { |
| let fileHandle = wasmfsOPFSFileHandles.get(fileID); |
| let accessID; |
| try { |
| let accessHandle; |
| // TODO: Remove this once the Access Handles API has settled. |
| if (FileSystemFileHandle.prototype.createSyncAccessHandle.length == 0) { |
| accessHandle = await fileHandle.createSyncAccessHandle(); |
| } else { |
| accessHandle = await fileHandle.createSyncAccessHandle( |
| {mode: "in-place"}); |
| } |
| accessID = wasmfsOPFSAllocate(wasmfsOPFSAccessHandles, accessHandle); |
| } catch (e) { |
| // TODO: Presumably only one of these will appear in the final API? |
| if (e.name === "InvalidStateError" || |
| e.name === "NoModificationAllowedError") { |
| accessID = -{{{ cDefine('EACCES') }}}; |
| } else { |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| accessID = -{{{ cDefine('EIO') }}}; |
| } |
| } |
| {{{ makeSetValue('accessIDPtr', 0, 'accessID', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_open_blob__deps: ['$wasmfsOPFSAllocate', |
| '$wasmfsOPFSFileHandles', |
| '$wasmfsOPFSBlobs'], |
| _wasmfs_opfs_open_blob: async function(ctx, fileID, blobIDPtr) { |
| let fileHandle = wasmfsOPFSFileHandles.get(fileID); |
| let blobID; |
| try { |
| let blob = await fileHandle.getFile(); |
| blobID = wasmfsOPFSAllocate(wasmfsOPFSBlobs, blob); |
| } catch (e) { |
| if (e.name === "NotAllowedError") { |
| blobID = -{{{ cDefine('EACCES') }}}; |
| } else { |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| blobID = -{{{ cDefine('EIO') }}}; |
| } |
| } |
| {{{ makeSetValue('blobIDPtr', 0, 'blobID', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_close_access__deps: ['$wasmfsOPFSFree', |
| '$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_close_access: async function(ctx, accessID, errPtr) { |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| try { |
| await accessHandle.close(); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| wasmfsOPFSFree(wasmfsOPFSAccessHandles, accessID); |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_close_blob__deps: ['$wasmfsOPFSFree', |
| '$wasmfsOPFSBlobs'], |
| _wasmfs_opfs_close_blob: function(blobID) { |
| wasmfsOPFSFree(wasmfsOPFSBlobs, blobID); |
| }, |
| |
| _wasmfs_opfs_read_access__deps: ['$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_read_access: function(accessID, bufPtr, len, pos) { |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| let data = HEAPU8.subarray(bufPtr, bufPtr + len); |
| try { |
| return accessHandle.read(data, {at: pos}); |
| } catch (e) { |
| if (e.name == "TypeError") { |
| return -{{{ cDefine('EINVAL') }}}; |
| } |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| return -{{{ cDefine('EIO') }}}; |
| } |
| }, |
| |
| _wasmfs_opfs_read_blob__deps: ['$wasmfsOPFSBlobs'], |
| _wasmfs_opfs_read_blob: async function(ctx, blobID, bufPtr, len, pos, nreadPtr) { |
| let blob = wasmfsOPFSBlobs.get(blobID); |
| let slice = blob.slice(pos, pos + len); |
| let nread = 0; |
| |
| try { |
| // TODO: Use ReadableStreamBYOBReader once |
| // https://bugs.chromium.org/p/chromium/issues/detail?id=1189621 is |
| // resolved. |
| let buf = await slice.arrayBuffer(); |
| let data = new Uint8Array(buf); |
| HEAPU8.set(data, bufPtr); |
| nread += data.length; |
| } catch (e) { |
| if (e instanceof RangeError) { |
| nread = -{{{ cDefine('EFAULT') }}}; |
| } else { |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| nread = -{{{ cDefine('EIO') }}}; |
| } |
| } |
| |
| {{{ makeSetValue('nreadPtr', 0, 'nread', 'i32') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_write_access__deps: ['$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_write_access: function(accessID, bufPtr, len, pos) { |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| let data = HEAPU8.subarray(bufPtr, bufPtr + len); |
| try { |
| return accessHandle.write(data, {at: pos}); |
| } catch (e) { |
| if (e.name == "TypeError") { |
| return -{{{ cDefine('EINVAL') }}}; |
| } |
| #if ASSERTIONS |
| err('unexpected error:', e, e.stack); |
| #endif |
| return -{{{ cDefine('EIO') }}}; |
| } |
| }, |
| |
| _wasmfs_opfs_get_size_access__deps: ['$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_get_size_access: async function(ctx, accessID, sizePtr) { |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| let size; |
| try { |
| size = await accessHandle.getSize(); |
| } catch { |
| size = -{{{ cDefine('EIO') }}}; |
| } |
| {{{ makeSetValue('sizePtr', 0, 'size', 'i64') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_get_size_blob__deps: ['$wasmfsOPFSBlobs'], |
| _wasmfs_opfs_get_size_blob: function(blobID) { |
| // This cannot fail. |
| return wasmfsOPFSBlobs.get(blobID).size; |
| }, |
| |
| _wasmfs_opfs_get_size_file__deps: ['$wasmfsOPFSFileHandles'], |
| _wasmfs_opfs_get_size_file: async function(ctx, fileID, sizePtr) { |
| let fileHandle = wasmfsOPFSFileHandles.get(fileID); |
| let size; |
| try { |
| size = (await fileHandle.getFile()).size; |
| } catch { |
| size = -{{{ cDefine('EIO') }}}; |
| } |
| {{{ makeSetValue('sizePtr', 0, 'size', 'i64') }}}; |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_set_size_access__deps: ['$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_set_size_access: async function(ctx, accessID, |
| {{{ defineI64Param('size') }}}, |
| errPtr) { |
| {{{ receiveI64ParamAsDouble('size') }}}; |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| try { |
| await accessHandle.truncate(size); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_set_size_file__deps: ['$wasmfsOPFSFileHandles'], |
| _wasmfs_opfs_set_size_file: async function(ctx, fileID, |
| {{{ defineI64Param('size') }}}, |
| errPtr) { |
| {{{ receiveI64ParamAsDouble('size') }}}; |
| let fileHandle = wasmfsOPFSFileHandles.get(fileID); |
| try { |
| let writable = await fileHandle.createWritable({keepExistingData: true}); |
| await writable.truncate(size); |
| await writable.close(); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| }, |
| |
| _wasmfs_opfs_flush_access__deps: ['$wasmfsOPFSAccessHandles'], |
| _wasmfs_opfs_flush_access: async function(ctx, accessID, errPtr) { |
| let accessHandle = wasmfsOPFSAccessHandles.get(accessID); |
| try { |
| await accessHandle.flush(); |
| } catch { |
| let err = -{{{ cDefine('EIO') }}}; |
| {{{ makeSetValue('errPtr', 0, 'err', 'i32') }}}; |
| } |
| _emscripten_proxy_finish(ctx); |
| } |
| }); |
