takashi kadono / Mbed OS Nucleo_446

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Dependencies:   ssd1331

mbed-os/features/storage/filesystem/File.cpp@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2015 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16
kadonotakashi 0:8fdf9a60065b 17 #include "File.h"
kadonotakashi 0:8fdf9a60065b 18 #include <errno.h>
kadonotakashi 0:8fdf9a60065b 19
kadonotakashi 0:8fdf9a60065b 20 namespace mbed {
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 File::File()
kadonotakashi 0:8fdf9a60065b 23 : _fs(0), _file(0)
kadonotakashi 0:8fdf9a60065b 24 {
kadonotakashi 0:8fdf9a60065b 25 }
kadonotakashi 0:8fdf9a60065b 26
kadonotakashi 0:8fdf9a60065b 27 File::File(FileSystem *fs, const char *path, int flags)
kadonotakashi 0:8fdf9a60065b 28 : _fs(0), _file(0)
kadonotakashi 0:8fdf9a60065b 29 {
kadonotakashi 0:8fdf9a60065b 30 open(fs, path, flags);
kadonotakashi 0:8fdf9a60065b 31 }
kadonotakashi 0:8fdf9a60065b 32
kadonotakashi 0:8fdf9a60065b 33 File::~File()
kadonotakashi 0:8fdf9a60065b 34 {
kadonotakashi 0:8fdf9a60065b 35 if (_fs) {
kadonotakashi 0:8fdf9a60065b 36 close();
kadonotakashi 0:8fdf9a60065b 37 }
kadonotakashi 0:8fdf9a60065b 38 }
kadonotakashi 0:8fdf9a60065b 39
kadonotakashi 0:8fdf9a60065b 40 int File::open(FileSystem *fs, const char *path, int flags)
kadonotakashi 0:8fdf9a60065b 41 {
kadonotakashi 0:8fdf9a60065b 42 if (_fs) {
kadonotakashi 0:8fdf9a60065b 43 return -EINVAL;
kadonotakashi 0:8fdf9a60065b 44 }
kadonotakashi 0:8fdf9a60065b 45
kadonotakashi 0:8fdf9a60065b 46 int err = fs->file_open(&_file, path, flags);
kadonotakashi 0:8fdf9a60065b 47 if (!err) {
kadonotakashi 0:8fdf9a60065b 48 _fs = fs;
kadonotakashi 0:8fdf9a60065b 49 }
kadonotakashi 0:8fdf9a60065b 50
kadonotakashi 0:8fdf9a60065b 51 return err;
kadonotakashi 0:8fdf9a60065b 52 }
kadonotakashi 0:8fdf9a60065b 53
kadonotakashi 0:8fdf9a60065b 54 int File::close()
kadonotakashi 0:8fdf9a60065b 55 {
kadonotakashi 0:8fdf9a60065b 56 if (!_fs) {
kadonotakashi 0:8fdf9a60065b 57 return -EINVAL;
kadonotakashi 0:8fdf9a60065b 58 }
kadonotakashi 0:8fdf9a60065b 59
kadonotakashi 0:8fdf9a60065b 60 int err = _fs->file_close(_file);
kadonotakashi 0:8fdf9a60065b 61 _fs = 0;
kadonotakashi 0:8fdf9a60065b 62 return err;
kadonotakashi 0:8fdf9a60065b 63 }
kadonotakashi 0:8fdf9a60065b 64
kadonotakashi 0:8fdf9a60065b 65 ssize_t File::read(void *buffer, size_t len)
kadonotakashi 0:8fdf9a60065b 66 {
kadonotakashi 0:8fdf9a60065b 67 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 68 return _fs->file_read(_file, buffer, len);
kadonotakashi 0:8fdf9a60065b 69 }
kadonotakashi 0:8fdf9a60065b 70
kadonotakashi 0:8fdf9a60065b 71 ssize_t File::write(const void *buffer, size_t len)
kadonotakashi 0:8fdf9a60065b 72 {
kadonotakashi 0:8fdf9a60065b 73 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 74 return _fs->file_write(_file, buffer, len);
kadonotakashi 0:8fdf9a60065b 75 }
kadonotakashi 0:8fdf9a60065b 76
kadonotakashi 0:8fdf9a60065b 77 int File::sync()
kadonotakashi 0:8fdf9a60065b 78 {
kadonotakashi 0:8fdf9a60065b 79 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 80 return _fs->file_sync(_file);
kadonotakashi 0:8fdf9a60065b 81 }
kadonotakashi 0:8fdf9a60065b 82
kadonotakashi 0:8fdf9a60065b 83 int File::isatty()
kadonotakashi 0:8fdf9a60065b 84 {
kadonotakashi 0:8fdf9a60065b 85 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 86 return _fs->file_isatty(_file);
kadonotakashi 0:8fdf9a60065b 87 }
kadonotakashi 0:8fdf9a60065b 88
kadonotakashi 0:8fdf9a60065b 89 off_t File::seek(off_t offset, int whence)
kadonotakashi 0:8fdf9a60065b 90 {
kadonotakashi 0:8fdf9a60065b 91 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 92 return _fs->file_seek(_file, offset, whence);
kadonotakashi 0:8fdf9a60065b 93 }
kadonotakashi 0:8fdf9a60065b 94
kadonotakashi 0:8fdf9a60065b 95 off_t File::tell()
kadonotakashi 0:8fdf9a60065b 96 {
kadonotakashi 0:8fdf9a60065b 97 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 98 return _fs->file_tell(_file);
kadonotakashi 0:8fdf9a60065b 99 }
kadonotakashi 0:8fdf9a60065b 100
kadonotakashi 0:8fdf9a60065b 101 void File::rewind()
kadonotakashi 0:8fdf9a60065b 102 {
kadonotakashi 0:8fdf9a60065b 103 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 104 return _fs->file_rewind(_file);
kadonotakashi 0:8fdf9a60065b 105 }
kadonotakashi 0:8fdf9a60065b 106
kadonotakashi 0:8fdf9a60065b 107 off_t File::size()
kadonotakashi 0:8fdf9a60065b 108 {
kadonotakashi 0:8fdf9a60065b 109 MBED_ASSERT(_fs);
kadonotakashi 0:8fdf9a60065b 110 return _fs->file_size(_file);
kadonotakashi 0:8fdf9a60065b 111 }
kadonotakashi 0:8fdf9a60065b 112
kadonotakashi 0:8fdf9a60065b 113 } // namespace mbed