mbed-os
Dependents: cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more
features/filesystem/Dir.cpp@0:b74591d5ab33, 2017-12-11 (annotated)
- Committer:
- be_bryan
- Date:
- Mon Dec 11 17:54:04 2017 +0000
- Revision:
- 0:b74591d5ab33
motor ++
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
be_bryan | 0:b74591d5ab33 | 1 | /* mbed Microcontroller Library |
be_bryan | 0:b74591d5ab33 | 2 | * Copyright (c) 2015 ARM Limited |
be_bryan | 0:b74591d5ab33 | 3 | * |
be_bryan | 0:b74591d5ab33 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
be_bryan | 0:b74591d5ab33 | 5 | * you may not use this file except in compliance with the License. |
be_bryan | 0:b74591d5ab33 | 6 | * You may obtain a copy of the License at |
be_bryan | 0:b74591d5ab33 | 7 | * |
be_bryan | 0:b74591d5ab33 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
be_bryan | 0:b74591d5ab33 | 9 | * |
be_bryan | 0:b74591d5ab33 | 10 | * Unless required by applicable law or agreed to in writing, software |
be_bryan | 0:b74591d5ab33 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
be_bryan | 0:b74591d5ab33 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
be_bryan | 0:b74591d5ab33 | 13 | * See the License for the specific language governing permissions and |
be_bryan | 0:b74591d5ab33 | 14 | * limitations under the License. |
be_bryan | 0:b74591d5ab33 | 15 | */ |
be_bryan | 0:b74591d5ab33 | 16 | |
be_bryan | 0:b74591d5ab33 | 17 | #include "Dir.h" |
be_bryan | 0:b74591d5ab33 | 18 | #include "mbed.h" |
be_bryan | 0:b74591d5ab33 | 19 | #include <errno.h> |
be_bryan | 0:b74591d5ab33 | 20 | |
be_bryan | 0:b74591d5ab33 | 21 | |
be_bryan | 0:b74591d5ab33 | 22 | Dir::Dir() |
be_bryan | 0:b74591d5ab33 | 23 | : _fs(0), _dir(0) |
be_bryan | 0:b74591d5ab33 | 24 | { |
be_bryan | 0:b74591d5ab33 | 25 | } |
be_bryan | 0:b74591d5ab33 | 26 | |
be_bryan | 0:b74591d5ab33 | 27 | Dir::Dir(FileSystem *fs, const char *path) |
be_bryan | 0:b74591d5ab33 | 28 | : _fs(0), _dir(0) |
be_bryan | 0:b74591d5ab33 | 29 | { |
be_bryan | 0:b74591d5ab33 | 30 | open(fs, path); |
be_bryan | 0:b74591d5ab33 | 31 | } |
be_bryan | 0:b74591d5ab33 | 32 | |
be_bryan | 0:b74591d5ab33 | 33 | Dir::~Dir() |
be_bryan | 0:b74591d5ab33 | 34 | { |
be_bryan | 0:b74591d5ab33 | 35 | if (_fs) { |
be_bryan | 0:b74591d5ab33 | 36 | close(); |
be_bryan | 0:b74591d5ab33 | 37 | } |
be_bryan | 0:b74591d5ab33 | 38 | } |
be_bryan | 0:b74591d5ab33 | 39 | |
be_bryan | 0:b74591d5ab33 | 40 | int Dir::open(FileSystem *fs, const char *path) |
be_bryan | 0:b74591d5ab33 | 41 | { |
be_bryan | 0:b74591d5ab33 | 42 | if (_fs) { |
be_bryan | 0:b74591d5ab33 | 43 | return -EINVAL; |
be_bryan | 0:b74591d5ab33 | 44 | } |
be_bryan | 0:b74591d5ab33 | 45 | |
be_bryan | 0:b74591d5ab33 | 46 | int err = fs->dir_open(&_dir, path); |
be_bryan | 0:b74591d5ab33 | 47 | if (!err) { |
be_bryan | 0:b74591d5ab33 | 48 | _fs = fs; |
be_bryan | 0:b74591d5ab33 | 49 | } |
be_bryan | 0:b74591d5ab33 | 50 | |
be_bryan | 0:b74591d5ab33 | 51 | return err; |
be_bryan | 0:b74591d5ab33 | 52 | } |
be_bryan | 0:b74591d5ab33 | 53 | |
be_bryan | 0:b74591d5ab33 | 54 | int Dir::close() |
be_bryan | 0:b74591d5ab33 | 55 | { |
be_bryan | 0:b74591d5ab33 | 56 | if (!_fs) { |
be_bryan | 0:b74591d5ab33 | 57 | return -EINVAL; |
be_bryan | 0:b74591d5ab33 | 58 | } |
be_bryan | 0:b74591d5ab33 | 59 | |
be_bryan | 0:b74591d5ab33 | 60 | int err = _fs->dir_close(_dir); |
be_bryan | 0:b74591d5ab33 | 61 | _fs = 0; |
be_bryan | 0:b74591d5ab33 | 62 | return err; |
be_bryan | 0:b74591d5ab33 | 63 | } |
be_bryan | 0:b74591d5ab33 | 64 | |
be_bryan | 0:b74591d5ab33 | 65 | ssize_t Dir::read(struct dirent *ent) |
be_bryan | 0:b74591d5ab33 | 66 | { |
be_bryan | 0:b74591d5ab33 | 67 | MBED_ASSERT(_fs); |
be_bryan | 0:b74591d5ab33 | 68 | memset(ent, 0, sizeof(struct dirent)); |
be_bryan | 0:b74591d5ab33 | 69 | return _fs->dir_read(_dir, ent); |
be_bryan | 0:b74591d5ab33 | 70 | } |
be_bryan | 0:b74591d5ab33 | 71 | |
be_bryan | 0:b74591d5ab33 | 72 | void Dir::seek(off_t offset) |
be_bryan | 0:b74591d5ab33 | 73 | { |
be_bryan | 0:b74591d5ab33 | 74 | MBED_ASSERT(_fs); |
be_bryan | 0:b74591d5ab33 | 75 | return _fs->dir_seek(_dir, offset); |
be_bryan | 0:b74591d5ab33 | 76 | } |
be_bryan | 0:b74591d5ab33 | 77 | |
be_bryan | 0:b74591d5ab33 | 78 | off_t Dir::tell() |
be_bryan | 0:b74591d5ab33 | 79 | { |
be_bryan | 0:b74591d5ab33 | 80 | MBED_ASSERT(_fs); |
be_bryan | 0:b74591d5ab33 | 81 | return _fs->dir_tell(_dir); |
be_bryan | 0:b74591d5ab33 | 82 | } |
be_bryan | 0:b74591d5ab33 | 83 | |
be_bryan | 0:b74591d5ab33 | 84 | void Dir::rewind() |
be_bryan | 0:b74591d5ab33 | 85 | { |
be_bryan | 0:b74591d5ab33 | 86 | MBED_ASSERT(_fs); |
be_bryan | 0:b74591d5ab33 | 87 | return _fs->dir_rewind(_dir); |
be_bryan | 0:b74591d5ab33 | 88 | } |
be_bryan | 0:b74591d5ab33 | 89 | |
be_bryan | 0:b74591d5ab33 | 90 | size_t Dir::size() |
be_bryan | 0:b74591d5ab33 | 91 | { |
be_bryan | 0:b74591d5ab33 | 92 | MBED_ASSERT(_fs); |
be_bryan | 0:b74591d5ab33 | 93 | return _fs->dir_size(_dir); |
be_bryan | 0:b74591d5ab33 | 94 | } |