zhang boie / mbed-dev-f30333

mbed-dev-f303

platform/FileHandle.cpp@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2016 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "FileHandle.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17 #include "platform/mbed_retarget.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18 #include "platform/mbed_critical.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 namespace mbed {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22 off_t FileHandle::size()
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24 /* remember our current position */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 off_t off = seek(0, SEEK_CUR);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26 if (off < 0) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 return off;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 /* seek to the end to get the file length */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 off_t size = seek(0, SEEK_END);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 /* return to our old position */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 seek(off, SEEK_SET);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 return size;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36 std::FILE *fdopen(FileHandle *fh, const char *mode)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 return mbed_fdopen(fh, mode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 } // namespace mbed
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42