| 1 |
/* |
| 2 |
* Copyright (c) 1999 |
| 3 |
* Silicon Graphics Computer Systems, Inc. |
| 4 |
* |
| 5 |
* Copyright (c) 1999 |
| 6 |
* Boris Fomitchev |
| 7 |
* |
| 8 |
* This material is provided "as is", with absolutely no warranty expressed |
| 9 |
* or implied. Any use is at your own risk. |
| 10 |
* |
| 11 |
* Permission to use or copy this software for any purpose is hereby granted |
| 12 |
* without fee, provided the above notices are retained on all copies. |
| 13 |
* Permission to modify the code and to distribute modified code is granted, |
| 14 |
* provided the above notices are retained, and a notice that the code was |
| 15 |
* modified is included with the above copyright notice. |
| 16 |
* |
| 17 |
*/ |
| 18 |
|
| 19 |
#ifndef _STLP_STDIO_FILE_H |
| 20 |
#define _STLP_STDIO_FILE_H |
| 21 |
|
| 22 |
/* This file provides a low-level interface between the internal |
| 23 |
* representation of struct FILE, from the C stdio library, and |
| 24 |
* the C++ I/O library. */ |
| 25 |
|
| 26 |
#ifndef _STLP_CSTDIO |
| 27 |
# include <cstdio> |
| 28 |
#endif |
| 29 |
#ifndef _STLP_CSTDDEF |
| 30 |
# include <cstddef> |
| 31 |
#endif |
| 32 |
|
| 33 |
#if defined (__MSL__) |
| 34 |
# include <unix.h> /* get the definition of fileno */ |
| 35 |
#endif |
| 36 |
|
| 37 |
_STLP_BEGIN_NAMESPACE |
| 38 |
|
| 39 |
#if defined (_STLP_WCE) |
| 40 |
|
| 41 |
inline int _FILE_fd(const FILE *__f) { |
| 42 |
/* Check if FILE is one of the three standard streams |
| 43 |
We do this check first, because invoking _fileno() on one of them |
| 44 |
causes a terminal window to be created. This also happens if you do |
| 45 |
any IO on them, but merely retrieving the filedescriptor shouldn't |
| 46 |
already do that. |
| 47 |
|
| 48 |
Obviously this is pretty implementation-specific because it requires |
| 49 |
that indeed the first three FDs are always the same, but that is not |
| 50 |
only common but almost guaranteed. */ |
| 51 |
for (int __fd = 0; __fd != 3; ++__fd) { |
| 52 |
if (__f == _getstdfilex(__fd)) |
| 53 |
return __fd; |
| 54 |
} |
| 55 |
|
| 56 |
/* Normal files. */ |
| 57 |
return (int)::_fileno((FILE*)__f); |
| 58 |
} |
| 59 |
|
| 60 |
# elif defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR) |
| 61 |
|
| 62 |
inline int _FILE_fd(const FILE *__f) { return __f->__file; } |
| 63 |
|
| 64 |
# elif defined (__sun) && defined (_LP64) |
| 65 |
|
| 66 |
inline int _FILE_fd(const FILE *__f) { return (int) __f->__pad[2]; } |
| 67 |
|
| 68 |
#elif defined (__hpux) /* && defined(__hppa) && defined(__HP_aCC)) */ || \ |
| 69 |
defined (__MVS__) || \ |
| 70 |
defined (_STLP_USE_UCLIBC) || /* should be before _STLP_USE_GLIBC */ \ |
| 71 |
defined (__ANDROID__) /* should be before _STLP_USE_GLIBC */ |
| 72 |
|
| 73 |
inline int _FILE_fd(const FILE *__f) { return fileno(__CONST_CAST(FILE*, __f)); } |
| 74 |
|
| 75 |
#elif defined (_STLP_USE_GLIBC) |
| 76 |
|
| 77 |
inline int _FILE_fd(const FILE *__f) { return __f->_fileno; } |
| 78 |
|
| 79 |
#elif defined (__BORLANDC__) |
| 80 |
|
| 81 |
inline int _FILE_fd(const FILE *__f) { return __f->fd; } |
| 82 |
|
| 83 |
#elif defined (__QNXNTO__) || defined (__WATCOMC__) || defined (__EMX__) |
| 84 |
|
| 85 |
inline int _FILE_fd(const FILE *__f) { return __f->_handle; } |
| 86 |
|
| 87 |
#elif defined (__Lynx__) |
| 88 |
|
| 89 |
/* the prototypes are taken from LynxOS patch for STLport 4.0 */ |
| 90 |
inline int _FILE_fd(const FILE *__f) { return __f->_fd; } |
| 91 |
|
| 92 |
#else /* The most common access to file descriptor. */ |
| 93 |
|
| 94 |
inline int _FILE_fd(const FILE *__f) { return __f->_file; } |
| 95 |
|
| 96 |
#endif |
| 97 |
|
| 98 |
_STLP_END_NAMESPACE |
| 99 |
|
| 100 |
#endif /* _STLP_STDIO_FILE_H */ |
| 101 |
|
| 102 |
/* Local Variables: |
| 103 |
* mode: C++ |
| 104 |
* End: |
| 105 |
*/ |
