BA / Mbed OS BaBoRo1

Erste version der Software für der Prototyp

mbed-os/features/filesystem/Dir.cpp@4:75df35ef4fb6, 2018-03-30 (annotated)

Committer:
borlanic
Date:
Fri Mar 30 14:07:05 2018 +0000
Revision:
4:75df35ef4fb6
Parent:
0:380207fcb5c1 
commentar

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:380207fcb5c1 1 /* mbed Microcontroller Library
borlanic 0:380207fcb5c1 2 * Copyright (c) 2015 ARM Limited
borlanic 0:380207fcb5c1 3 *
borlanic 0:380207fcb5c1 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:380207fcb5c1 5 * you may not use this file except in compliance with the License.
borlanic 0:380207fcb5c1 6 * You may obtain a copy of the License at
borlanic 0:380207fcb5c1 7 *
borlanic 0:380207fcb5c1 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:380207fcb5c1 9 *
borlanic 0:380207fcb5c1 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:380207fcb5c1 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:380207fcb5c1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:380207fcb5c1 13 * See the License for the specific language governing permissions and
borlanic 0:380207fcb5c1 14 * limitations under the License.
borlanic 0:380207fcb5c1 15 */
borlanic 0:380207fcb5c1 16
borlanic 0:380207fcb5c1 17 #include "Dir.h"
borlanic 0:380207fcb5c1 18 #include "mbed.h"
borlanic 0:380207fcb5c1 19 #include <errno.h>
borlanic 0:380207fcb5c1 20
borlanic 0:380207fcb5c1 21
borlanic 0:380207fcb5c1 22 Dir::Dir()
borlanic 0:380207fcb5c1 23 : _fs(0), _dir(0)
borlanic 0:380207fcb5c1 24 {
borlanic 0:380207fcb5c1 25 }
borlanic 0:380207fcb5c1 26
borlanic 0:380207fcb5c1 27 Dir::Dir(FileSystem *fs, const char *path)
borlanic 0:380207fcb5c1 28 : _fs(0), _dir(0)
borlanic 0:380207fcb5c1 29 {
borlanic 0:380207fcb5c1 30 open(fs, path);
borlanic 0:380207fcb5c1 31 }
borlanic 0:380207fcb5c1 32
borlanic 0:380207fcb5c1 33 Dir::~Dir()
borlanic 0:380207fcb5c1 34 {
borlanic 0:380207fcb5c1 35 if (_fs) {
borlanic 0:380207fcb5c1 36 close();
borlanic 0:380207fcb5c1 37 }
borlanic 0:380207fcb5c1 38 }
borlanic 0:380207fcb5c1 39
borlanic 0:380207fcb5c1 40 int Dir::open(FileSystem *fs, const char *path)
borlanic 0:380207fcb5c1 41 {
borlanic 0:380207fcb5c1 42 if (_fs) {
borlanic 0:380207fcb5c1 43 return -EINVAL;
borlanic 0:380207fcb5c1 44 }
borlanic 0:380207fcb5c1 45
borlanic 0:380207fcb5c1 46 int err = fs->dir_open(&_dir, path);
borlanic 0:380207fcb5c1 47 if (!err) {
borlanic 0:380207fcb5c1 48 _fs = fs;
borlanic 0:380207fcb5c1 49 }
borlanic 0:380207fcb5c1 50
borlanic 0:380207fcb5c1 51 return err;
borlanic 0:380207fcb5c1 52 }
borlanic 0:380207fcb5c1 53
borlanic 0:380207fcb5c1 54 int Dir::close()
borlanic 0:380207fcb5c1 55 {
borlanic 0:380207fcb5c1 56 if (!_fs) {
borlanic 0:380207fcb5c1 57 return -EINVAL;
borlanic 0:380207fcb5c1 58 }
borlanic 0:380207fcb5c1 59
borlanic 0:380207fcb5c1 60 int err = _fs->dir_close(_dir);
borlanic 0:380207fcb5c1 61 _fs = 0;
borlanic 0:380207fcb5c1 62 return err;
borlanic 0:380207fcb5c1 63 }
borlanic 0:380207fcb5c1 64
borlanic 0:380207fcb5c1 65 ssize_t Dir::read(struct dirent *ent)
borlanic 0:380207fcb5c1 66 {
borlanic 0:380207fcb5c1 67 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 68 memset(ent, 0, sizeof(struct dirent));
borlanic 0:380207fcb5c1 69 return _fs->dir_read(_dir, ent);
borlanic 0:380207fcb5c1 70 }
borlanic 0:380207fcb5c1 71
borlanic 0:380207fcb5c1 72 void Dir::seek(off_t offset)
borlanic 0:380207fcb5c1 73 {
borlanic 0:380207fcb5c1 74 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 75 return _fs->dir_seek(_dir, offset);
borlanic 0:380207fcb5c1 76 }
borlanic 0:380207fcb5c1 77
borlanic 0:380207fcb5c1 78 off_t Dir::tell()
borlanic 0:380207fcb5c1 79 {
borlanic 0:380207fcb5c1 80 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 81 return _fs->dir_tell(_dir);
borlanic 0:380207fcb5c1 82 }
borlanic 0:380207fcb5c1 83
borlanic 0:380207fcb5c1 84 void Dir::rewind()
borlanic 0:380207fcb5c1 85 {
borlanic 0:380207fcb5c1 86 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 87 return _fs->dir_rewind(_dir);
borlanic 0:380207fcb5c1 88 }
borlanic 0:380207fcb5c1 89
borlanic 0:380207fcb5c1 90 size_t Dir::size()
borlanic 0:380207fcb5c1 91 {
borlanic 0:380207fcb5c1 92 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 93 return _fs->dir_size(_dir);
borlanic 0:380207fcb5c1 94 }