lzbp li / mbed-stm32l0l1-src-1

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Fork of mbed-stm32l0/l1-src by lzbp li

api/FileSystemLike.h@638:56887a2974b9, 2016-09-08 (annotated)

Committer:
lzbpli
Date:
Thu Sep 08 02:46:37 2016 +0000
Revision:
638:56887a2974b9
Parent:
13:0645d8841f51 
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bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_FILESYSTEMLIKE_H
bogdanm 13:0645d8841f51 17 #define MBED_FILESYSTEMLIKE_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 #include "FileBase.h"
bogdanm 13:0645d8841f51 22 #include "FileHandle.h"
bogdanm 13:0645d8841f51 23 #include "DirHandle.h"
bogdanm 13:0645d8841f51 24
bogdanm 13:0645d8841f51 25 namespace mbed {
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 /** A filesystem-like object is one that can be used to open files
bogdanm 13:0645d8841f51 28 * though it by fopen("/name/filename", mode)
bogdanm 13:0645d8841f51 29 *
bogdanm 13:0645d8841f51 30 * Implementations must define at least open (the default definitions
bogdanm 13:0645d8841f51 31 * of the rest of the functions just return error values).
bogdanm 13:0645d8841f51 32 */
bogdanm 13:0645d8841f51 33 class FileSystemLike : public FileBase {
bogdanm 13:0645d8841f51 34
bogdanm 13:0645d8841f51 35 public:
bogdanm 13:0645d8841f51 36 /** FileSystemLike constructor
bogdanm 13:0645d8841f51 37 *
bogdanm 13:0645d8841f51 38 * @param name The name to use for the filesystem.
bogdanm 13:0645d8841f51 39 */
bogdanm 13:0645d8841f51 40 FileSystemLike(const char *name);
bogdanm 13:0645d8841f51 41
bogdanm 13:0645d8841f51 42 virtual ~FileSystemLike();
bogdanm 13:0645d8841f51 43
bogdanm 13:0645d8841f51 44 static DirHandle *opendir();
bogdanm 13:0645d8841f51 45 friend class BaseDirHandle;
bogdanm 13:0645d8841f51 46
bogdanm 13:0645d8841f51 47 /** Opens a file from the filesystem
bogdanm 13:0645d8841f51 48 *
bogdanm 13:0645d8841f51 49 * @param filename The name of the file to open.
bogdanm 13:0645d8841f51 50 * @param flags One of O_RDONLY, O_WRONLY, or O_RDWR, OR'd with
bogdanm 13:0645d8841f51 51 * zero or more of O_CREAT, O_TRUNC, or O_APPEND.
bogdanm 13:0645d8841f51 52 *
bogdanm 13:0645d8841f51 53 * @returns
bogdanm 13:0645d8841f51 54 * A pointer to a FileHandle object representing the
bogdanm 13:0645d8841f51 55 * file on success, or NULL on failure.
bogdanm 13:0645d8841f51 56 */
bogdanm 13:0645d8841f51 57 virtual FileHandle *open(const char *filename, int flags) = 0;
bogdanm 13:0645d8841f51 58
bogdanm 13:0645d8841f51 59 /** Remove a file from the filesystem.
bogdanm 13:0645d8841f51 60 *
bogdanm 13:0645d8841f51 61 * @param filename the name of the file to remove.
bogdanm 13:0645d8841f51 62 * @param returns 0 on success, -1 on failure.
bogdanm 13:0645d8841f51 63 */
bogdanm 13:0645d8841f51 64 virtual int remove(const char *filename) { return -1; };
bogdanm 13:0645d8841f51 65
bogdanm 13:0645d8841f51 66 /** Rename a file in the filesystem.
bogdanm 13:0645d8841f51 67 *
bogdanm 13:0645d8841f51 68 * @param oldname the name of the file to rename.
bogdanm 13:0645d8841f51 69 * @param newname the name to rename it to.
bogdanm 13:0645d8841f51 70 *
bogdanm 13:0645d8841f51 71 * @returns
bogdanm 13:0645d8841f51 72 * 0 on success,
bogdanm 13:0645d8841f51 73 * -1 on failure.
bogdanm 13:0645d8841f51 74 */
bogdanm 13:0645d8841f51 75 virtual int rename(const char *oldname, const char *newname) { return -1; };
bogdanm 13:0645d8841f51 76
bogdanm 13:0645d8841f51 77 /** Opens a directory in the filesystem and returns a DirHandle
bogdanm 13:0645d8841f51 78 * representing the directory stream.
bogdanm 13:0645d8841f51 79 *
bogdanm 13:0645d8841f51 80 * @param name The name of the directory to open.
bogdanm 13:0645d8841f51 81 *
bogdanm 13:0645d8841f51 82 * @returns
bogdanm 13:0645d8841f51 83 * A DirHandle representing the directory stream, or
bogdanm 13:0645d8841f51 84 * NULL on failure.
bogdanm 13:0645d8841f51 85 */
bogdanm 13:0645d8841f51 86 virtual DirHandle *opendir(const char *name) { return NULL; };
bogdanm 13:0645d8841f51 87
bogdanm 13:0645d8841f51 88 /** Creates a directory in the filesystem.
bogdanm 13:0645d8841f51 89 *
bogdanm 13:0645d8841f51 90 * @param name The name of the directory to create.
bogdanm 13:0645d8841f51 91 * @param mode The permissions to create the directory with.
bogdanm 13:0645d8841f51 92 *
bogdanm 13:0645d8841f51 93 * @returns
bogdanm 13:0645d8841f51 94 * 0 on success,
bogdanm 13:0645d8841f51 95 * -1 on failure.
bogdanm 13:0645d8841f51 96 */
bogdanm 13:0645d8841f51 97 virtual int mkdir(const char *name, mode_t mode) { return -1; }
bogdanm 13:0645d8841f51 98
bogdanm 13:0645d8841f51 99 // TODO other filesystem functions (mkdir, rm, rn, ls etc)
bogdanm 13:0645d8841f51 100 };
bogdanm 13:0645d8841f51 101
bogdanm 13:0645d8841f51 102 } // namespace mbed
bogdanm 13:0645d8841f51 103
bogdanm 13:0645d8841f51 104 #endif