blob: bba8e6550710f85ffe5813c0d54d3dabf9db88e8 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <__availability>
#include <__config>
#ifndef _LIBCPP_HAS_NO_FILESYSTEM
# include <fstream>
#endif
#include <ostream>
#include "std_stream.h"
_LIBCPP_BEGIN_NAMESPACE_STD
_LIBCPP_AVAILABILITY_PRINT _LIBCPP_EXPORTED_FROM_ABI FILE* __get_ostream_file(ostream& __os) {
// dynamic_cast requires RTTI, this only affects users whose vendor builds
// the dylib with RTTI disabled. It does not affect users who build with RTTI
// disabled but use a dylib where the RTTI is enabled.
//
// Returning a nullptr means the stream is not considered a terminal and the
// special terminal handling is not done. The terminal handling is mainly of
// importance on Windows.
#ifndef _LIBCPP_HAS_NO_RTTI
auto* __rdbuf = __os.rdbuf();
# ifndef _LIBCPP_HAS_NO_FILESYSTEM
if (auto* __buffer = dynamic_cast<filebuf*>(__rdbuf))
return __buffer->__file_;
# endif
if (auto* __buffer = dynamic_cast<__stdoutbuf<char>*>(__rdbuf))
return __buffer->__file_;
#endif // _LIBCPP_HAS_NO_RTTI
return nullptr;
}
_LIBCPP_END_NAMESPACE_STD
|
