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