Kev Mann / mbed-dev-OS5_10_4

RTC auf true

features/storage/filesystem/File.cpp@2:7aab896b1a3b, 2019-03-13 (annotated)

Committer:
kevman
Date:
Wed Mar 13 11:03:24 2019 +0000
Revision:
2:7aab896b1a3b
Parent:
0:38ceb79fef03 
2019-03-13

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kevman 0:38ceb79fef03 1 /* mbed Microcontroller Library
kevman 0:38ceb79fef03 2 * Copyright (c) 2015 ARM Limited
kevman 0:38ceb79fef03 3 *
kevman 0:38ceb79fef03 4 * Licensed under the Apache License, Version 2.0 (the "License");
kevman 0:38ceb79fef03 5 * you may not use this file except in compliance with the License.
kevman 0:38ceb79fef03 6 * You may obtain a copy of the License at
kevman 0:38ceb79fef03 7 *
kevman 0:38ceb79fef03 8 * http://www.apache.org/licenses/LICENSE-2.0
kevman 0:38ceb79fef03 9 *
kevman 0:38ceb79fef03 10 * Unless required by applicable law or agreed to in writing, software
kevman 0:38ceb79fef03 11 * distributed under the License is distributed on an "AS IS" BASIS,
kevman 0:38ceb79fef03 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kevman 0:38ceb79fef03 13 * See the License for the specific language governing permissions and
kevman 0:38ceb79fef03 14 * limitations under the License.
kevman 0:38ceb79fef03 15 */
kevman 0:38ceb79fef03 16
kevman 0:38ceb79fef03 17 #include "File.h"
kevman 0:38ceb79fef03 18 #include <errno.h>
kevman 0:38ceb79fef03 19
kevman 0:38ceb79fef03 20 namespace mbed {
kevman 0:38ceb79fef03 21
kevman 0:38ceb79fef03 22 File::File()
kevman 0:38ceb79fef03 23 : _fs(0), _file(0)
kevman 0:38ceb79fef03 24 {
kevman 0:38ceb79fef03 25 }
kevman 0:38ceb79fef03 26
kevman 0:38ceb79fef03 27 File::File(FileSystem *fs, const char *path, int flags)
kevman 0:38ceb79fef03 28 : _fs(0), _file(0)
kevman 0:38ceb79fef03 29 {
kevman 0:38ceb79fef03 30 open(fs, path, flags);
kevman 0:38ceb79fef03 31 }
kevman 0:38ceb79fef03 32
kevman 0:38ceb79fef03 33 File::~File()
kevman 0:38ceb79fef03 34 {
kevman 0:38ceb79fef03 35 if (_fs) {
kevman 0:38ceb79fef03 36 close();
kevman 0:38ceb79fef03 37 }
kevman 0:38ceb79fef03 38 }
kevman 0:38ceb79fef03 39
kevman 0:38ceb79fef03 40 int File::open(FileSystem *fs, const char *path, int flags)
kevman 0:38ceb79fef03 41 {
kevman 0:38ceb79fef03 42 if (_fs) {
kevman 0:38ceb79fef03 43 return -EINVAL;
kevman 0:38ceb79fef03 44 }
kevman 0:38ceb79fef03 45
kevman 0:38ceb79fef03 46 int err = fs->file_open(&_file, path, flags);
kevman 0:38ceb79fef03 47 if (!err) {
kevman 0:38ceb79fef03 48 _fs = fs;
kevman 0:38ceb79fef03 49 }
kevman 0:38ceb79fef03 50
kevman 0:38ceb79fef03 51 return err;
kevman 0:38ceb79fef03 52 }
kevman 0:38ceb79fef03 53
kevman 0:38ceb79fef03 54 int File::close()
kevman 0:38ceb79fef03 55 {
kevman 0:38ceb79fef03 56 if (!_fs) {
kevman 0:38ceb79fef03 57 return -EINVAL;
kevman 0:38ceb79fef03 58 }
kevman 0:38ceb79fef03 59
kevman 0:38ceb79fef03 60 int err = _fs->file_close(_file);
kevman 0:38ceb79fef03 61 _fs = 0;
kevman 0:38ceb79fef03 62 return err;
kevman 0:38ceb79fef03 63 }
kevman 0:38ceb79fef03 64
kevman 0:38ceb79fef03 65 ssize_t File::read(void *buffer, size_t len)
kevman 0:38ceb79fef03 66 {
kevman 0:38ceb79fef03 67 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 68 return _fs->file_read(_file, buffer, len);
kevman 0:38ceb79fef03 69 }
kevman 0:38ceb79fef03 70
kevman 0:38ceb79fef03 71 ssize_t File::write(const void *buffer, size_t len)
kevman 0:38ceb79fef03 72 {
kevman 0:38ceb79fef03 73 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 74 return _fs->file_write(_file, buffer, len);
kevman 0:38ceb79fef03 75 }
kevman 0:38ceb79fef03 76
kevman 0:38ceb79fef03 77 int File::sync()
kevman 0:38ceb79fef03 78 {
kevman 0:38ceb79fef03 79 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 80 return _fs->file_sync(_file);
kevman 0:38ceb79fef03 81 }
kevman 0:38ceb79fef03 82
kevman 0:38ceb79fef03 83 int File::isatty()
kevman 0:38ceb79fef03 84 {
kevman 0:38ceb79fef03 85 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 86 return _fs->file_isatty(_file);
kevman 0:38ceb79fef03 87 }
kevman 0:38ceb79fef03 88
kevman 0:38ceb79fef03 89 off_t File::seek(off_t offset, int whence)
kevman 0:38ceb79fef03 90 {
kevman 0:38ceb79fef03 91 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 92 return _fs->file_seek(_file, offset, whence);
kevman 0:38ceb79fef03 93 }
kevman 0:38ceb79fef03 94
kevman 0:38ceb79fef03 95 off_t File::tell()
kevman 0:38ceb79fef03 96 {
kevman 0:38ceb79fef03 97 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 98 return _fs->file_tell(_file);
kevman 0:38ceb79fef03 99 }
kevman 0:38ceb79fef03 100
kevman 0:38ceb79fef03 101 void File::rewind()
kevman 0:38ceb79fef03 102 {
kevman 0:38ceb79fef03 103 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 104 return _fs->file_rewind(_file);
kevman 0:38ceb79fef03 105 }
kevman 0:38ceb79fef03 106
kevman 0:38ceb79fef03 107 off_t File::size()
kevman 0:38ceb79fef03 108 {
kevman 0:38ceb79fef03 109 MBED_ASSERT(_fs);
kevman 0:38ceb79fef03 110 return _fs->file_size(_file);
kevman 0:38ceb79fef03 111 }
kevman 0:38ceb79fef03 112
kevman 0:38ceb79fef03 113 } // namespace mbed