Knight KE / Mbed OS Game_Master

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

mbed-os/features/filesystem/FileSystem.cpp@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2013 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16
WFKnight 0:9b3d4731edbb 17 #include "mbed.h"
WFKnight 0:9b3d4731edbb 18 #include "filesystem/Dir.h"
WFKnight 0:9b3d4731edbb 19 #include "filesystem/File.h"
WFKnight 0:9b3d4731edbb 20 #include "filesystem/FileSystem.h"
WFKnight 0:9b3d4731edbb 21 #include <errno.h>
WFKnight 0:9b3d4731edbb 22
WFKnight 0:9b3d4731edbb 23
WFKnight 0:9b3d4731edbb 24 FileSystem::FileSystem(const char *name)
WFKnight 0:9b3d4731edbb 25 : FileSystemLike(name)
WFKnight 0:9b3d4731edbb 26 {
WFKnight 0:9b3d4731edbb 27 }
WFKnight 0:9b3d4731edbb 28
WFKnight 0:9b3d4731edbb 29 int FileSystem::reformat(BlockDevice *bd)
WFKnight 0:9b3d4731edbb 30 {
WFKnight 0:9b3d4731edbb 31 return -ENOSYS;
WFKnight 0:9b3d4731edbb 32 }
WFKnight 0:9b3d4731edbb 33
WFKnight 0:9b3d4731edbb 34 int FileSystem::remove(const char *path)
WFKnight 0:9b3d4731edbb 35 {
WFKnight 0:9b3d4731edbb 36 return -ENOSYS;
WFKnight 0:9b3d4731edbb 37 }
WFKnight 0:9b3d4731edbb 38
WFKnight 0:9b3d4731edbb 39 int FileSystem::rename(const char *path, const char *newpath)
WFKnight 0:9b3d4731edbb 40 {
WFKnight 0:9b3d4731edbb 41 return -ENOSYS;
WFKnight 0:9b3d4731edbb 42 }
WFKnight 0:9b3d4731edbb 43
WFKnight 0:9b3d4731edbb 44 int FileSystem::stat(const char *path, struct stat *st)
WFKnight 0:9b3d4731edbb 45 {
WFKnight 0:9b3d4731edbb 46 return -ENOSYS;
WFKnight 0:9b3d4731edbb 47 }
WFKnight 0:9b3d4731edbb 48
WFKnight 0:9b3d4731edbb 49 int FileSystem::mkdir(const char *path, mode_t mode)
WFKnight 0:9b3d4731edbb 50 {
WFKnight 0:9b3d4731edbb 51 return -ENOSYS;
WFKnight 0:9b3d4731edbb 52 }
WFKnight 0:9b3d4731edbb 53
WFKnight 0:9b3d4731edbb 54 int FileSystem::statvfs(const char *path, struct statvfs *buf)
WFKnight 0:9b3d4731edbb 55 {
WFKnight 0:9b3d4731edbb 56 return -ENOSYS;
WFKnight 0:9b3d4731edbb 57 }
WFKnight 0:9b3d4731edbb 58
WFKnight 0:9b3d4731edbb 59 int FileSystem::file_sync(fs_file_t file)
WFKnight 0:9b3d4731edbb 60 {
WFKnight 0:9b3d4731edbb 61 return 0;
WFKnight 0:9b3d4731edbb 62 }
WFKnight 0:9b3d4731edbb 63
WFKnight 0:9b3d4731edbb 64 int FileSystem::file_isatty(fs_file_t file)
WFKnight 0:9b3d4731edbb 65 {
WFKnight 0:9b3d4731edbb 66 return false;
WFKnight 0:9b3d4731edbb 67 }
WFKnight 0:9b3d4731edbb 68
WFKnight 0:9b3d4731edbb 69 off_t FileSystem::file_tell(fs_file_t file)
WFKnight 0:9b3d4731edbb 70 {
WFKnight 0:9b3d4731edbb 71 return file_seek(file, 0, SEEK_CUR);
WFKnight 0:9b3d4731edbb 72 }
WFKnight 0:9b3d4731edbb 73
WFKnight 0:9b3d4731edbb 74 void FileSystem::file_rewind(fs_file_t file)
WFKnight 0:9b3d4731edbb 75 {
WFKnight 0:9b3d4731edbb 76 file_seek(file, 0, SEEK_SET);
WFKnight 0:9b3d4731edbb 77 }
WFKnight 0:9b3d4731edbb 78
WFKnight 0:9b3d4731edbb 79 off_t FileSystem::file_size(fs_file_t file)
WFKnight 0:9b3d4731edbb 80 {
WFKnight 0:9b3d4731edbb 81 off_t off = file_tell(file);
WFKnight 0:9b3d4731edbb 82 off_t size = file_seek(file, 0, SEEK_END);
WFKnight 0:9b3d4731edbb 83 file_seek(file, off, SEEK_SET);
WFKnight 0:9b3d4731edbb 84 return size;
WFKnight 0:9b3d4731edbb 85 }
WFKnight 0:9b3d4731edbb 86
WFKnight 0:9b3d4731edbb 87 int FileSystem::dir_open(fs_dir_t *dir, const char *path)
WFKnight 0:9b3d4731edbb 88 {
WFKnight 0:9b3d4731edbb 89 return -ENOSYS;
WFKnight 0:9b3d4731edbb 90 }
WFKnight 0:9b3d4731edbb 91
WFKnight 0:9b3d4731edbb 92 int FileSystem::dir_close(fs_dir_t dir)
WFKnight 0:9b3d4731edbb 93 {
WFKnight 0:9b3d4731edbb 94 return -ENOSYS;
WFKnight 0:9b3d4731edbb 95 }
WFKnight 0:9b3d4731edbb 96
WFKnight 0:9b3d4731edbb 97 ssize_t FileSystem::dir_read(fs_dir_t dir, struct dirent *ent)
WFKnight 0:9b3d4731edbb 98 {
WFKnight 0:9b3d4731edbb 99 return -ENOSYS;
WFKnight 0:9b3d4731edbb 100 }
WFKnight 0:9b3d4731edbb 101
WFKnight 0:9b3d4731edbb 102 void FileSystem::dir_seek(fs_dir_t dir, off_t offset)
WFKnight 0:9b3d4731edbb 103 {
WFKnight 0:9b3d4731edbb 104 }
WFKnight 0:9b3d4731edbb 105
WFKnight 0:9b3d4731edbb 106 off_t FileSystem::dir_tell(fs_dir_t dir)
WFKnight 0:9b3d4731edbb 107 {
WFKnight 0:9b3d4731edbb 108 return 0;
WFKnight 0:9b3d4731edbb 109 }
WFKnight 0:9b3d4731edbb 110
WFKnight 0:9b3d4731edbb 111 void FileSystem::dir_rewind(fs_dir_t dir)
WFKnight 0:9b3d4731edbb 112 {
WFKnight 0:9b3d4731edbb 113 // Note, the may not satisfy rewind on all filesystems
WFKnight 0:9b3d4731edbb 114 dir_seek(dir, 0);
WFKnight 0:9b3d4731edbb 115 }
WFKnight 0:9b3d4731edbb 116
WFKnight 0:9b3d4731edbb 117 size_t FileSystem::dir_size(fs_dir_t dir)
WFKnight 0:9b3d4731edbb 118 {
WFKnight 0:9b3d4731edbb 119 off_t off = dir_tell(dir);
WFKnight 0:9b3d4731edbb 120 size_t size = 0;
WFKnight 0:9b3d4731edbb 121 struct dirent *ent = new struct dirent;
WFKnight 0:9b3d4731edbb 122
WFKnight 0:9b3d4731edbb 123 dir_rewind(dir);
WFKnight 0:9b3d4731edbb 124 while (true) {
WFKnight 0:9b3d4731edbb 125 int res = dir_read(dir, ent);
WFKnight 0:9b3d4731edbb 126 if (res <= 0) {
WFKnight 0:9b3d4731edbb 127 break;
WFKnight 0:9b3d4731edbb 128 }
WFKnight 0:9b3d4731edbb 129
WFKnight 0:9b3d4731edbb 130 size += 1;
WFKnight 0:9b3d4731edbb 131 }
WFKnight 0:9b3d4731edbb 132 dir_seek(dir, off);
WFKnight 0:9b3d4731edbb 133
WFKnight 0:9b3d4731edbb 134 delete ent;
WFKnight 0:9b3d4731edbb 135 return size;
WFKnight 0:9b3d4731edbb 136 }
WFKnight 0:9b3d4731edbb 137
WFKnight 0:9b3d4731edbb 138 // Internally used file wrapper that manages memory on close
WFKnight 0:9b3d4731edbb 139 template <typename F>
WFKnight 0:9b3d4731edbb 140 class Managed : public F {
WFKnight 0:9b3d4731edbb 141 public:
WFKnight 0:9b3d4731edbb 142 virtual int close() {
WFKnight 0:9b3d4731edbb 143 int err = F::close();
WFKnight 0:9b3d4731edbb 144 delete this;
WFKnight 0:9b3d4731edbb 145 return err;
WFKnight 0:9b3d4731edbb 146 }
WFKnight 0:9b3d4731edbb 147 };
WFKnight 0:9b3d4731edbb 148
WFKnight 0:9b3d4731edbb 149 int FileSystem::open(FileHandle **file, const char *path, int flags)
WFKnight 0:9b3d4731edbb 150 {
WFKnight 0:9b3d4731edbb 151 File *f = new Managed<File>;
WFKnight 0:9b3d4731edbb 152 int err = f->open(this, path, flags);
WFKnight 0:9b3d4731edbb 153 if (err) {
WFKnight 0:9b3d4731edbb 154 delete f;
WFKnight 0:9b3d4731edbb 155 return err;
WFKnight 0:9b3d4731edbb 156 }
WFKnight 0:9b3d4731edbb 157
WFKnight 0:9b3d4731edbb 158 *file = f;
WFKnight 0:9b3d4731edbb 159 return 0;
WFKnight 0:9b3d4731edbb 160 }
WFKnight 0:9b3d4731edbb 161
WFKnight 0:9b3d4731edbb 162 int FileSystem::open(DirHandle **dir, const char *path) {
WFKnight 0:9b3d4731edbb 163 Dir *d = new Managed<Dir>;
WFKnight 0:9b3d4731edbb 164 int err = d->open(this, path);
WFKnight 0:9b3d4731edbb 165 if (err) {
WFKnight 0:9b3d4731edbb 166 delete d;
WFKnight 0:9b3d4731edbb 167 return err;
WFKnight 0:9b3d4731edbb 168 }
WFKnight 0:9b3d4731edbb 169
WFKnight 0:9b3d4731edbb 170 *dir = d;
WFKnight 0:9b3d4731edbb 171 return 0;
WFKnight 0:9b3d4731edbb 172 }