| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| parcel Lucy; |
| |
| /** In-memory FileHandle. |
| * |
| * RAM-based implementation of FileHandle, to be used in conjunction with |
| * RAMFolder. |
| */ |
| class Lucy::Store::RAMFileHandle cnick RAMFH |
| inherits Lucy::Store::FileHandle { |
| |
| RAMFile *ram_file; |
| int64_t len; |
| |
| inert incremented nullable RAMFileHandle* |
| open(const CharBuf *path = NULL, uint32_t flags, RAMFile *file = NULL); |
| |
| /** |
| * Return a new RAMFileHandle, or set Err_error and return NULL on |
| * failure. |
| * |
| * @param path Filepath. |
| * @param flags FileHandle flags. |
| * @param file An existing RAMFile; if not supplied, the FH_CREATE flag |
| * must be passed or an error will occur. |
| */ |
| inert nullable RAMFileHandle* |
| do_open(RAMFileHandle *self, const CharBuf *path = NULL, uint32_t flags, |
| RAMFile *file = NULL); |
| |
| /** Access the backing RAMFile. |
| */ |
| RAMFile* |
| Get_File(RAMFileHandle *self); |
| |
| bool_t |
| Grow(RAMFileHandle *self, int64_t len); |
| |
| public void |
| Destroy(RAMFileHandle *self); |
| |
| bool_t |
| Window(RAMFileHandle *self, FileWindow *window, int64_t offset, int64_t len); |
| |
| bool_t |
| Release_Window(RAMFileHandle *self, FileWindow *window); |
| |
| bool_t |
| Read(RAMFileHandle *self, char *dest, int64_t offset, size_t len); |
| |
| bool_t |
| Write(RAMFileHandle *self, const void *data, size_t len); |
| |
| int64_t |
| Length(RAMFileHandle *self); |
| |
| bool_t |
| Close(RAMFileHandle *self); |
| } |
| |
| |