/****************************************************************************/ /* */ /* GNAT RUN-TIME COMPONENTS */ /* */ /* Auxiliary C functions for Interfaces.C.Streams */ /* */ /* Body */ /* */ /* $Revision: 1.46 $ /* */ /* Copyright (C) 1992-2001 Free Software Foundation, Inc. */ /* */ /* GNAT is free software; you can redistribute it and/or modify it under */ /* terms of the GNU General Public License as published by the Free Soft- */ /* ware Foundation; either version 2, or (at your option) any later ver- */ /* sion. GNAT is distributed in the hope that it will be useful, but WITH- */ /* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY */ /* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License */ /* for more details. You should have received a copy of the GNU General */ /* Public License distributed with GNAT; see file COPYING. If not, write */ /* to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, */ /* MA 02111-1307, USA. */ /* */ /* As a special exception, if you link this file with other files to */ /* produce an executable, this file does not by itself cause the resulting */ /* executable to be covered by the GNU General Public License. This except- */ /* ion does not however invalidate any other reasons why the executable */ /* file might be covered by the GNU Public License. */ /* */ /* GNAT was originally developed by the GNAT team at New York University. */ /* It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). */ /* */ /****************************************************************************/ /* Routines required for implementing routines in Interfaces.C.Streams */ #ifdef __vxworks #include "vxWorks.h" #endif #include "config.h" #include #include #include #ifdef __EMX__ #include int max_path_len = _MAX_PATH; #elif defined (VMS) #include "a-adaint.h" #include int max_path_len = 255; /* PATH_MAX */ #elif defined (__vxworks) || defined (__OPENNT) #include int max_path_len = PATH_MAX; #elif defined (linux) #include /* If we cannot find MAXPATHLEN there, try in unistd.h. That file might not exist, but we'll blow up anyway if we don't try something. */ #ifndef MAXPATHLEN #include #endif /* Don't use macros on linux since they cause incompatible changes between glibc 2.0 and 2.1 */ #ifdef stderr # undef stderr #endif #ifdef stdin # undef stdin #endif #ifdef stdout # undef stdout #endif int max_path_len = MAXPATHLEN; #else #include /* If we can't find MAXPATHLEN there, try in unistd.h. That file might not exist, but we'll blow up anyway if we don't try something. */ #ifndef MAXPATHLEN #include #endif int max_path_len = MAXPATHLEN; #endif /* the _IONBF value in CYGNUS or MINGW32 stdio.h is wrong */ #if defined (WINNT) || defined (_WINNT) #undef _IONBF #define _IONBF 0004 #endif int feof__ (stream) FILE *stream; { return (feof (stream)); } int ferror__ (stream) FILE *stream; { return (ferror (stream)); } int fileno__ (stream) FILE *stream; { return (fileno (stream)); } int is_regular_file_fd (fd) int fd; { int ret; struct stat statbuf; #ifdef __EMX__ /* Programs using screen I/O may need to reset the FPU after initialization of screen-handling related DLL's, so force DLL initialization by doing a null-write and then reset the FPU */ DosWrite (0, &ret, 0, &ret); __gnat_init_float(); #endif ret = fstat (fd, &statbuf); return (!ret && S_ISREG (statbuf.st_mode)); } /* on some systems, the constants for seek are not defined, if so, then provide the conventional definitions */ #ifndef SEEK_SET #define SEEK_SET 0 /* Set file pointer to offset */ #define SEEK_CUR 1 /* Set file pointer to its current value plus offset */ #define SEEK_END 2 /* Set file pointer to the size of the file plus offset */ #endif /* if L_tmpnam is not set, use a large number that should be safe */ #ifndef L_tmpnam #define L_tmpnam 256 #endif int c_constant_eof = EOF; int c_constant_iofbf = _IOFBF; int c_constant_iolbf = _IOLBF; int c_constant_ionbf = _IONBF; int c_constant_l_tmpnam = L_tmpnam; int c_constant_seek_cur = SEEK_CUR; int c_constant_seek_end = SEEK_END; int c_constant_seek_set = SEEK_SET; FILE * c_constant_stderr () { return stderr; } FILE * c_constant_stdin () { return stdin; } FILE * c_constant_stdout () { return stdout; } char * full_name (nam, buffer) char *nam; char *buffer; { char *p; #if defined(__EMX__) || defined (__MINGW32__) /* if this is a device file return it as is */ /* under Windows NT and OS/2 a device file end with : */ if (nam [strlen (nam) - 1] == ':') { strcpy (buffer, nam); } else { _fullpath (buffer, nam, max_path_len); for (p = buffer; *p; p++) if (*p == '/') *p = '\\'; } #elif defined (MSDOS) _fixpath (nam, buffer); #elif defined (sgi) /* Use realpath function which resolves links and references to .. and .. on those Unix systems that support it. Note that linux provides it but cannot handle more than 5 symbolic links in a full name, so we use the getcwd approach instead. */ realpath (nam, buffer); #elif defined (VMS) strcpy (buffer, to_canonical_file_spec (nam)); if (buffer[0] == '/') { strcpy (buffer, to_host_file_spec (buffer)); } else { char nambuffer [max_path_len]; strcpy (nambuffer, buffer); strcpy (buffer, getcwd (buffer, max_path_len, 0)); strcat (buffer, "/"); strcat (buffer, nambuffer); strcpy (buffer, to_host_file_spec (buffer)); } return buffer; #else extern char *getcwd(); if (nam[0] != '/') { p = getcwd (buffer, max_path_len); if (p == 0) { buffer[0] = '\0'; return NULL; } /* If the name returned is an absolute path, it is safe to append / to the path and concatenate the name of the file. */ if (buffer[0] == '/') strcat (buffer, "/"); strcat (buffer, nam); } else strcpy (buffer, nam); #endif }