BA / Mbed OS BaBoRo1

Erste version der Software für der Prototyp

mbed-os/features/filesystem/File.cpp@0:380207fcb5c1, 2018-03-29 (annotated)

Committer:
borlanic
Date:
Thu Mar 29 07:02:09 2018 +0000
Revision:
0:380207fcb5c1
Encoder, IMU --> OK; Controller --> in bearbeitung

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 "File.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 File::File()
borlanic 0:380207fcb5c1 23 : _fs(0), _file(0)
borlanic 0:380207fcb5c1 24 {
borlanic 0:380207fcb5c1 25 }
borlanic 0:380207fcb5c1 26
borlanic 0:380207fcb5c1 27 File::File(FileSystem *fs, const char *path, int flags)
borlanic 0:380207fcb5c1 28 : _fs(0), _file(0)
borlanic 0:380207fcb5c1 29 {
borlanic 0:380207fcb5c1 30 open(fs, path, flags);
borlanic 0:380207fcb5c1 31 }
borlanic 0:380207fcb5c1 32
borlanic 0:380207fcb5c1 33 File::~File()
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 File::open(FileSystem *fs, const char *path, int flags)
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->file_open(&_file, path, flags);
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 File::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->file_close(_file);
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 File::read(void *buffer, size_t len)
borlanic 0:380207fcb5c1 66 {
borlanic 0:380207fcb5c1 67 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 68 return _fs->file_read(_file, buffer, len);
borlanic 0:380207fcb5c1 69 }
borlanic 0:380207fcb5c1 70
borlanic 0:380207fcb5c1 71 ssize_t File::write(const void *buffer, size_t len)
borlanic 0:380207fcb5c1 72 {
borlanic 0:380207fcb5c1 73 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 74 return _fs->file_write(_file, buffer, len);
borlanic 0:380207fcb5c1 75 }
borlanic 0:380207fcb5c1 76
borlanic 0:380207fcb5c1 77 int File::sync()
borlanic 0:380207fcb5c1 78 {
borlanic 0:380207fcb5c1 79 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 80 return _fs->file_sync(_file);
borlanic 0:380207fcb5c1 81 }
borlanic 0:380207fcb5c1 82
borlanic 0:380207fcb5c1 83 int File::isatty()
borlanic 0:380207fcb5c1 84 {
borlanic 0:380207fcb5c1 85 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 86 return _fs->file_isatty(_file);
borlanic 0:380207fcb5c1 87 }
borlanic 0:380207fcb5c1 88
borlanic 0:380207fcb5c1 89 off_t File::seek(off_t offset, int whence)
borlanic 0:380207fcb5c1 90 {
borlanic 0:380207fcb5c1 91 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 92 return _fs->file_seek(_file, offset, whence);
borlanic 0:380207fcb5c1 93 }
borlanic 0:380207fcb5c1 94
borlanic 0:380207fcb5c1 95 off_t File::tell()
borlanic 0:380207fcb5c1 96 {
borlanic 0:380207fcb5c1 97 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 98 return _fs->file_tell(_file);
borlanic 0:380207fcb5c1 99 }
borlanic 0:380207fcb5c1 100
borlanic 0:380207fcb5c1 101 void File::rewind()
borlanic 0:380207fcb5c1 102 {
borlanic 0:380207fcb5c1 103 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 104 return _fs->file_rewind(_file);
borlanic 0:380207fcb5c1 105 }
borlanic 0:380207fcb5c1 106
borlanic 0:380207fcb5c1 107 off_t File::size()
borlanic 0:380207fcb5c1 108 {
borlanic 0:380207fcb5c1 109 MBED_ASSERT(_fs);
borlanic 0:380207fcb5c1 110 return _fs->file_size(_file);
borlanic 0:380207fcb5c1 111 }
borlanic 0:380207fcb5c1 112