Gan likun / mbed1-dev

001

platform/FileHandle.cpp@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 * Copyright (c) 2006-2016 ARM Limited
ganlikun 0:13413ea9a877 3 *
ganlikun 0:13413ea9a877 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:13413ea9a877 5 * you may not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 6 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 9 *
ganlikun 0:13413ea9a877 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:13413ea9a877 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 13 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 14 * limitations under the License.
ganlikun 0:13413ea9a877 15 */
ganlikun 0:13413ea9a877 16 #include "FileHandle.h"
ganlikun 0:13413ea9a877 17 #include "platform/mbed_retarget.h"
ganlikun 0:13413ea9a877 18 #include "platform/mbed_critical.h"
ganlikun 0:13413ea9a877 19
ganlikun 0:13413ea9a877 20 namespace mbed {
ganlikun 0:13413ea9a877 21
ganlikun 0:13413ea9a877 22 off_t FileHandle::size()
ganlikun 0:13413ea9a877 23 {
ganlikun 0:13413ea9a877 24 /* remember our current position */
ganlikun 0:13413ea9a877 25 off_t off = seek(0, SEEK_CUR);
ganlikun 0:13413ea9a877 26 if (off < 0) {
ganlikun 0:13413ea9a877 27 return off;
ganlikun 0:13413ea9a877 28 }
ganlikun 0:13413ea9a877 29 /* seek to the end to get the file length */
ganlikun 0:13413ea9a877 30 off_t size = seek(0, SEEK_END);
ganlikun 0:13413ea9a877 31 /* return to our old position */
ganlikun 0:13413ea9a877 32 seek(off, SEEK_SET);
ganlikun 0:13413ea9a877 33 return size;
ganlikun 0:13413ea9a877 34 }
ganlikun 0:13413ea9a877 35
ganlikun 0:13413ea9a877 36 std::FILE *fdopen(FileHandle *fh, const char *mode)
ganlikun 0:13413ea9a877 37 {
ganlikun 0:13413ea9a877 38 return mbed_fdopen(fh, mode);
ganlikun 0:13413ea9a877 39 }
ganlikun 0:13413ea9a877 40
ganlikun 0:13413ea9a877 41 } // namespace mbed
ganlikun 0:13413ea9a877 42