Rahul Dahiya / Mbed OS STM32F7 Ethernet

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mbed-os/features/filesystem/Dir.cpp@0:fb8047b156bb, 2020-01-15 (annotated)

Committer:
rahul_dahiya
Date:
Wed Jan 15 15:57:15 2020 +0530
Revision:
0:fb8047b156bb
STM32F7 LWIP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rahul_dahiya 0:fb8047b156bb 1 /* mbed Microcontroller Library
rahul_dahiya 0:fb8047b156bb 2 * Copyright (c) 2015 ARM Limited
rahul_dahiya 0:fb8047b156bb 3 *
rahul_dahiya 0:fb8047b156bb 4 * Licensed under the Apache License, Version 2.0 (the "License");
rahul_dahiya 0:fb8047b156bb 5 * you may not use this file except in compliance with the License.
rahul_dahiya 0:fb8047b156bb 6 * You may obtain a copy of the License at
rahul_dahiya 0:fb8047b156bb 7 *
rahul_dahiya 0:fb8047b156bb 8 * http://www.apache.org/licenses/LICENSE-2.0
rahul_dahiya 0:fb8047b156bb 9 *
rahul_dahiya 0:fb8047b156bb 10 * Unless required by applicable law or agreed to in writing, software
rahul_dahiya 0:fb8047b156bb 11 * distributed under the License is distributed on an "AS IS" BASIS,
rahul_dahiya 0:fb8047b156bb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rahul_dahiya 0:fb8047b156bb 13 * See the License for the specific language governing permissions and
rahul_dahiya 0:fb8047b156bb 14 * limitations under the License.
rahul_dahiya 0:fb8047b156bb 15 */
rahul_dahiya 0:fb8047b156bb 16
rahul_dahiya 0:fb8047b156bb 17 #include "Dir.h"
rahul_dahiya 0:fb8047b156bb 18 #include "mbed.h"
rahul_dahiya 0:fb8047b156bb 19 #include <errno.h>
rahul_dahiya 0:fb8047b156bb 20
rahul_dahiya 0:fb8047b156bb 21
rahul_dahiya 0:fb8047b156bb 22 Dir::Dir()
rahul_dahiya 0:fb8047b156bb 23 : _fs(0), _dir(0)
rahul_dahiya 0:fb8047b156bb 24 {
rahul_dahiya 0:fb8047b156bb 25 }
rahul_dahiya 0:fb8047b156bb 26
rahul_dahiya 0:fb8047b156bb 27 Dir::Dir(FileSystem *fs, const char *path)
rahul_dahiya 0:fb8047b156bb 28 : _fs(0), _dir(0)
rahul_dahiya 0:fb8047b156bb 29 {
rahul_dahiya 0:fb8047b156bb 30 open(fs, path);
rahul_dahiya 0:fb8047b156bb 31 }
rahul_dahiya 0:fb8047b156bb 32
rahul_dahiya 0:fb8047b156bb 33 Dir::~Dir()
rahul_dahiya 0:fb8047b156bb 34 {
rahul_dahiya 0:fb8047b156bb 35 if (_fs) {
rahul_dahiya 0:fb8047b156bb 36 close();
rahul_dahiya 0:fb8047b156bb 37 }
rahul_dahiya 0:fb8047b156bb 38 }
rahul_dahiya 0:fb8047b156bb 39
rahul_dahiya 0:fb8047b156bb 40 int Dir::open(FileSystem *fs, const char *path)
rahul_dahiya 0:fb8047b156bb 41 {
rahul_dahiya 0:fb8047b156bb 42 if (_fs) {
rahul_dahiya 0:fb8047b156bb 43 return -EINVAL;
rahul_dahiya 0:fb8047b156bb 44 }
rahul_dahiya 0:fb8047b156bb 45
rahul_dahiya 0:fb8047b156bb 46 int err = fs->dir_open(&_dir, path);
rahul_dahiya 0:fb8047b156bb 47 if (!err) {
rahul_dahiya 0:fb8047b156bb 48 _fs = fs;
rahul_dahiya 0:fb8047b156bb 49 }
rahul_dahiya 0:fb8047b156bb 50
rahul_dahiya 0:fb8047b156bb 51 return err;
rahul_dahiya 0:fb8047b156bb 52 }
rahul_dahiya 0:fb8047b156bb 53
rahul_dahiya 0:fb8047b156bb 54 int Dir::close()
rahul_dahiya 0:fb8047b156bb 55 {
rahul_dahiya 0:fb8047b156bb 56 if (!_fs) {
rahul_dahiya 0:fb8047b156bb 57 return -EINVAL;
rahul_dahiya 0:fb8047b156bb 58 }
rahul_dahiya 0:fb8047b156bb 59
rahul_dahiya 0:fb8047b156bb 60 int err = _fs->dir_close(_dir);
rahul_dahiya 0:fb8047b156bb 61 _fs = 0;
rahul_dahiya 0:fb8047b156bb 62 return err;
rahul_dahiya 0:fb8047b156bb 63 }
rahul_dahiya 0:fb8047b156bb 64
rahul_dahiya 0:fb8047b156bb 65 ssize_t Dir::read(struct dirent *ent)
rahul_dahiya 0:fb8047b156bb 66 {
rahul_dahiya 0:fb8047b156bb 67 MBED_ASSERT(_fs);
rahul_dahiya 0:fb8047b156bb 68 memset(ent, 0, sizeof(struct dirent));
rahul_dahiya 0:fb8047b156bb 69 return _fs->dir_read(_dir, ent);
rahul_dahiya 0:fb8047b156bb 70 }
rahul_dahiya 0:fb8047b156bb 71
rahul_dahiya 0:fb8047b156bb 72 void Dir::seek(off_t offset)
rahul_dahiya 0:fb8047b156bb 73 {
rahul_dahiya 0:fb8047b156bb 74 MBED_ASSERT(_fs);
rahul_dahiya 0:fb8047b156bb 75 return _fs->dir_seek(_dir, offset);
rahul_dahiya 0:fb8047b156bb 76 }
rahul_dahiya 0:fb8047b156bb 77
rahul_dahiya 0:fb8047b156bb 78 off_t Dir::tell()
rahul_dahiya 0:fb8047b156bb 79 {
rahul_dahiya 0:fb8047b156bb 80 MBED_ASSERT(_fs);
rahul_dahiya 0:fb8047b156bb 81 return _fs->dir_tell(_dir);
rahul_dahiya 0:fb8047b156bb 82 }
rahul_dahiya 0:fb8047b156bb 83
rahul_dahiya 0:fb8047b156bb 84 void Dir::rewind()
rahul_dahiya 0:fb8047b156bb 85 {
rahul_dahiya 0:fb8047b156bb 86 MBED_ASSERT(_fs);
rahul_dahiya 0:fb8047b156bb 87 return _fs->dir_rewind(_dir);
rahul_dahiya 0:fb8047b156bb 88 }
rahul_dahiya 0:fb8047b156bb 89
rahul_dahiya 0:fb8047b156bb 90 size_t Dir::size()
rahul_dahiya 0:fb8047b156bb 91 {
rahul_dahiya 0:fb8047b156bb 92 MBED_ASSERT(_fs);
rahul_dahiya 0:fb8047b156bb 93 return _fs->dir_size(_dir);
rahul_dahiya 0:fb8047b156bb 94 }