Gan likun / mbed-dev11

platform/FileHandle.cpp@0:06036f8bee2d, 2022-10-24 (annotated)

Committer:
ganlikun
Date:
Mon Oct 24 15:19:39 2022 +0000
Revision:
0:06036f8bee2d
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:06036f8bee2d 1 /* mbed Microcontroller Library
ganlikun 0:06036f8bee2d 2 * Copyright (c) 2006-2016 ARM Limited
ganlikun 0:06036f8bee2d 3 *
ganlikun 0:06036f8bee2d 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:06036f8bee2d 5 * you may not use this file except in compliance with the License.
ganlikun 0:06036f8bee2d 6 * You may obtain a copy of the License at
ganlikun 0:06036f8bee2d 7 *
ganlikun 0:06036f8bee2d 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:06036f8bee2d 9 *
ganlikun 0:06036f8bee2d 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:06036f8bee2d 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:06036f8bee2d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:06036f8bee2d 13 * See the License for the specific language governing permissions and
ganlikun 0:06036f8bee2d 14 * limitations under the License.
ganlikun 0:06036f8bee2d 15 */
ganlikun 0:06036f8bee2d 16 #include "FileHandle.h"
ganlikun 0:06036f8bee2d 17 #include "platform/mbed_retarget.h"
ganlikun 0:06036f8bee2d 18 #include "platform/mbed_critical.h"
ganlikun 0:06036f8bee2d 19
ganlikun 0:06036f8bee2d 20 namespace mbed {
ganlikun 0:06036f8bee2d 21
ganlikun 0:06036f8bee2d 22 off_t FileHandle::size()
ganlikun 0:06036f8bee2d 23 {
ganlikun 0:06036f8bee2d 24 /* remember our current position */
ganlikun 0:06036f8bee2d 25 off_t off = seek(0, SEEK_CUR);
ganlikun 0:06036f8bee2d 26 if (off < 0) {
ganlikun 0:06036f8bee2d 27 return off;
ganlikun 0:06036f8bee2d 28 }
ganlikun 0:06036f8bee2d 29 /* seek to the end to get the file length */
ganlikun 0:06036f8bee2d 30 off_t size = seek(0, SEEK_END);
ganlikun 0:06036f8bee2d 31 /* return to our old position */
ganlikun 0:06036f8bee2d 32 seek(off, SEEK_SET);
ganlikun 0:06036f8bee2d 33 return size;
ganlikun 0:06036f8bee2d 34 }
ganlikun 0:06036f8bee2d 35
ganlikun 0:06036f8bee2d 36 std::FILE *fdopen(FileHandle *fh, const char *mode)
ganlikun 0:06036f8bee2d 37 {
ganlikun 0:06036f8bee2d 38 return mbed_fdopen(fh, mode);
ganlikun 0:06036f8bee2d 39 }
ganlikun 0:06036f8bee2d 40
ganlikun 0:06036f8bee2d 41 } // namespace mbed
ganlikun 0:06036f8bee2d 42