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Fork of OmniWheels by Gustav Atmel

mbed-os/features/filesystem/Dir.cpp@1:9c5af431a1f1, 2018-05-01 (annotated)

Committer:
gustavatmel
Date:
Tue May 01 15:47:08 2018 +0000
Revision:
1:9c5af431a1f1
sdf

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gustavatmel 1:9c5af431a1f1 1 /* mbed Microcontroller Library
gustavatmel 1:9c5af431a1f1 2 * Copyright (c) 2015 ARM Limited
gustavatmel 1:9c5af431a1f1 3 *
gustavatmel 1:9c5af431a1f1 4 * Licensed under the Apache License, Version 2.0 (the "License");
gustavatmel 1:9c5af431a1f1 5 * you may not use this file except in compliance with the License.
gustavatmel 1:9c5af431a1f1 6 * You may obtain a copy of the License at
gustavatmel 1:9c5af431a1f1 7 *
gustavatmel 1:9c5af431a1f1 8 * http://www.apache.org/licenses/LICENSE-2.0
gustavatmel 1:9c5af431a1f1 9 *
gustavatmel 1:9c5af431a1f1 10 * Unless required by applicable law or agreed to in writing, software
gustavatmel 1:9c5af431a1f1 11 * distributed under the License is distributed on an "AS IS" BASIS,
gustavatmel 1:9c5af431a1f1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
gustavatmel 1:9c5af431a1f1 13 * See the License for the specific language governing permissions and
gustavatmel 1:9c5af431a1f1 14 * limitations under the License.
gustavatmel 1:9c5af431a1f1 15 */
gustavatmel 1:9c5af431a1f1 16
gustavatmel 1:9c5af431a1f1 17 #include "Dir.h"
gustavatmel 1:9c5af431a1f1 18 #include "mbed.h"
gustavatmel 1:9c5af431a1f1 19 #include <errno.h>
gustavatmel 1:9c5af431a1f1 20
gustavatmel 1:9c5af431a1f1 21
gustavatmel 1:9c5af431a1f1 22 Dir::Dir()
gustavatmel 1:9c5af431a1f1 23 : _fs(0), _dir(0)
gustavatmel 1:9c5af431a1f1 24 {
gustavatmel 1:9c5af431a1f1 25 }
gustavatmel 1:9c5af431a1f1 26
gustavatmel 1:9c5af431a1f1 27 Dir::Dir(FileSystem *fs, const char *path)
gustavatmel 1:9c5af431a1f1 28 : _fs(0), _dir(0)
gustavatmel 1:9c5af431a1f1 29 {
gustavatmel 1:9c5af431a1f1 30 open(fs, path);
gustavatmel 1:9c5af431a1f1 31 }
gustavatmel 1:9c5af431a1f1 32
gustavatmel 1:9c5af431a1f1 33 Dir::~Dir()
gustavatmel 1:9c5af431a1f1 34 {
gustavatmel 1:9c5af431a1f1 35 if (_fs) {
gustavatmel 1:9c5af431a1f1 36 close();
gustavatmel 1:9c5af431a1f1 37 }
gustavatmel 1:9c5af431a1f1 38 }
gustavatmel 1:9c5af431a1f1 39
gustavatmel 1:9c5af431a1f1 40 int Dir::open(FileSystem *fs, const char *path)
gustavatmel 1:9c5af431a1f1 41 {
gustavatmel 1:9c5af431a1f1 42 if (_fs) {
gustavatmel 1:9c5af431a1f1 43 return -EINVAL;
gustavatmel 1:9c5af431a1f1 44 }
gustavatmel 1:9c5af431a1f1 45
gustavatmel 1:9c5af431a1f1 46 int err = fs->dir_open(&_dir, path);
gustavatmel 1:9c5af431a1f1 47 if (!err) {
gustavatmel 1:9c5af431a1f1 48 _fs = fs;
gustavatmel 1:9c5af431a1f1 49 }
gustavatmel 1:9c5af431a1f1 50
gustavatmel 1:9c5af431a1f1 51 return err;
gustavatmel 1:9c5af431a1f1 52 }
gustavatmel 1:9c5af431a1f1 53
gustavatmel 1:9c5af431a1f1 54 int Dir::close()
gustavatmel 1:9c5af431a1f1 55 {
gustavatmel 1:9c5af431a1f1 56 if (!_fs) {
gustavatmel 1:9c5af431a1f1 57 return -EINVAL;
gustavatmel 1:9c5af431a1f1 58 }
gustavatmel 1:9c5af431a1f1 59
gustavatmel 1:9c5af431a1f1 60 int err = _fs->dir_close(_dir);
gustavatmel 1:9c5af431a1f1 61 _fs = 0;
gustavatmel 1:9c5af431a1f1 62 return err;
gustavatmel 1:9c5af431a1f1 63 }
gustavatmel 1:9c5af431a1f1 64
gustavatmel 1:9c5af431a1f1 65 ssize_t Dir::read(struct dirent *ent)
gustavatmel 1:9c5af431a1f1 66 {
gustavatmel 1:9c5af431a1f1 67 MBED_ASSERT(_fs);
gustavatmel 1:9c5af431a1f1 68 memset(ent, 0, sizeof(struct dirent));
gustavatmel 1:9c5af431a1f1 69 return _fs->dir_read(_dir, ent);
gustavatmel 1:9c5af431a1f1 70 }
gustavatmel 1:9c5af431a1f1 71
gustavatmel 1:9c5af431a1f1 72 void Dir::seek(off_t offset)
gustavatmel 1:9c5af431a1f1 73 {
gustavatmel 1:9c5af431a1f1 74 MBED_ASSERT(_fs);
gustavatmel 1:9c5af431a1f1 75 return _fs->dir_seek(_dir, offset);
gustavatmel 1:9c5af431a1f1 76 }
gustavatmel 1:9c5af431a1f1 77
gustavatmel 1:9c5af431a1f1 78 off_t Dir::tell()
gustavatmel 1:9c5af431a1f1 79 {
gustavatmel 1:9c5af431a1f1 80 MBED_ASSERT(_fs);
gustavatmel 1:9c5af431a1f1 81 return _fs->dir_tell(_dir);
gustavatmel 1:9c5af431a1f1 82 }
gustavatmel 1:9c5af431a1f1 83
gustavatmel 1:9c5af431a1f1 84 void Dir::rewind()
gustavatmel 1:9c5af431a1f1 85 {
gustavatmel 1:9c5af431a1f1 86 MBED_ASSERT(_fs);
gustavatmel 1:9c5af431a1f1 87 return _fs->dir_rewind(_dir);
gustavatmel 1:9c5af431a1f1 88 }
gustavatmel 1:9c5af431a1f1 89
gustavatmel 1:9c5af431a1f1 90 size_t Dir::size()
gustavatmel 1:9c5af431a1f1 91 {
gustavatmel 1:9c5af431a1f1 92 MBED_ASSERT(_fs);
gustavatmel 1:9c5af431a1f1 93 return _fs->dir_size(_dir);
gustavatmel 1:9c5af431a1f1 94 }