src/libs/libgroff/maxpathname.cpp

   1 // -*- C++ -*-
   2 /* Copyright (C) 2005 Free Software Foundation, Inc.
   3      Written by Werner Lemberg (wl@gnu.org)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file COPYING.  If not, write to the Free Software
  19 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  20
  21 /* path_name_max(dir) does the same as pathconf(dir, _PC_PATH_MAX) */
  22
  23 #include "lib.h"
  24
  25 #include <sys/types.h>
  26
  27 #ifdef HAVE_UNISTD_H
  28 #include <unistd.h>
  29 #endif /* HAVE_UNISTD_H */
  30
  31 #ifdef _POSIX_VERSION
  32
  33 size_t path_name_max()
  34 {
  35   return pathconf("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf("/",_PC_PATH_MAX);
  36 }
  37
  38 #else /* not _POSIX_VERSION */
  39
  40 #include <stdlib.h>
  41
  42 #ifdef HAVE_DIRENT_H
  43 # include <dirent.h>
  44 #else /* not HAVE_DIRENT_H */
  45 # ifdef HAVE_SYS_DIR_H
  46 #  include <sys/dir.h>
  47 # endif /* HAVE_SYS_DIR_H */
  48 #endif /* not HAVE_DIRENT_H */
  49
  50 #ifndef PATH_MAX
  51 # ifdef MAXPATHLEN
  52 #  define PATH_MAX MAXPATHLEN
  53 # else /* !MAXPATHLEN */
  54 #  ifdef MAX_PATH
  55 #   define PATH_MAX MAX_PATH
  56 #  else /* !MAX_PATH */
  57 #   ifdef _MAX_PATH
  58 #    define PATH_MAX _MAX_PATH
  59 #   else /* !_MAX_PATH */
  60 #    define PATH_MAX 255
  61 #   endif /* !_MAX_PATH */
  62 #  endif /* !MAX_PATH */
  63 # endif /* !MAXPATHLEN */
  64 #endif /* !PATH_MAX */
  65
  66 size_t path_name_max()
  67 {
  68   return PATH_MAX;
  69 }
  70
  71 #endif /* not _POSIX_VERSION */