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118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* Copyright (c) 1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef _STLP_STDIO_FILE_H
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#define _STLP_STDIO_FILE_H
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/* This file provides a low-level interface between the internal
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* representation of struct FILE, from the C stdio library, and
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* the C++ I/O library. */
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#ifndef _STLP_CSTDIO
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# include <cstdio>
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#endif
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#ifndef _STLP_CSTDDEF
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# include <cstddef>
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#endif
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#if defined (__MSL__)
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# include <unix.h> /* get the definition of fileno */
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#endif
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_STLP_BEGIN_NAMESPACE
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#if defined (_STLP_WCE)
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inline int _FILE_fd(const FILE *__f) {
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/* Check if FILE is one of the three standard streams
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We do this check first, because invoking _fileno() on one of them
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causes a terminal window to be created. This also happens if you do
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any IO on them, but merely retrieving the filedescriptor shouldn't
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already do that.
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Obviously this is pretty implementation-specific because it requires
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that indeed the first three FDs are always the same, but that is not
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only common but almost guaranteed. */
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for (int __fd = 0; __fd != 3; ++__fd) {
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if (__f == _getstdfilex(__fd))
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return __fd;
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}
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/* Normal files. */
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return (int)::_fileno((FILE*)__f);
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}
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# elif defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR)
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inline int _FILE_fd(const FILE *__f) { return __f->__file; }
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# elif defined (__sun) && defined (_LP64)
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inline int _FILE_fd(const FILE *__f) { return (int) __f->__pad[2]; }
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#elif defined (__hpux) /* && defined(__hppa) && defined(__HP_aCC)) */ || \
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defined (__MVS__) || \
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defined (_STLP_USE_UCLIBC) /* should be before _STLP_USE_GLIBC */
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inline int _FILE_fd(const FILE *__f) { return fileno(__CONST_CAST(FILE*, __f)); }
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#elif defined (_STLP_USE_GLIBC)
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inline int _FILE_fd(const FILE *__f) { return __f->_fileno; }
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#elif defined (__BORLANDC__)
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inline int _FILE_fd(const FILE *__f) { return __f->fd; }
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#elif defined (__MWERKS__)
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/* using MWERKS-specific defines here to detect other OS targets
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* dwa: I'm not sure they provide fileno for all OS's, but this should
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* work for Win32 and WinCE
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* Hmm, at least for Novell NetWare __dest_os == __mac_os true too..
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* May be both __dest_os and __mac_os defined and empty? - ptr */
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# if __dest_os == __mac_os
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inline int _FILE_fd(const FILE *__f) { return ::fileno(__CONST_CAST(FILE*, __f)); }
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# else
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inline int _FILE_fd(const FILE *__f) { return ::_fileno(__CONST_CAST(FILE*, __f)); }
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# endif
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#elif defined (__QNXNTO__) || defined (__WATCOMC__) || defined (__EMX__)
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inline int _FILE_fd(const FILE *__f) { return __f->_handle; }
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#elif defined (__Lynx__)
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/* the prototypes are taken from LynxOS patch for STLport 4.0 */
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inline int _FILE_fd(const FILE *__f) { return __f->_fd; }
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#else /* The most common access to file descriptor. */
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inline int _FILE_fd(const FILE *__f) { return __f->_file; }
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#endif
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_STLP_END_NAMESPACE
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#endif /* _STLP_STDIO_FILE_H */
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/* Local Variables:
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* mode:C++
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* End: */
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