src/lib-roff/maxpathname.cpp

   1 /*@ path_name_max(dir) does the same as pathconf(dir, _PC_PATH_MAX).
   2  *
   3  * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   4  *
   5  * Copyright (C) 2005 Free Software Foundation, Inc.
   6  *      Written by Werner Lemberg (wl@gnu.org)
   7  *
   8  * This is free software; you can redistribute it and/or modify it under
   9  * the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2, or (at your option) any later
  11  * version.
  12  *
  13  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  14  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with groff; see the file COPYING.  If not, write to the Free Software
  20  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  21  */
  22
  23 #include "config.h"
  24 #include "lib.h"
  25
  26 #include <sys/types.h>
  27
  28 #ifdef HAVE_UNISTD_H
  29 # include <unistd.h>
  30 #endif
  31
  32 #ifdef _POSIX_VERSION
  33 size_t path_name_max()
  34 {
  35   return pathconf("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf("/",_PC_PATH_MAX);
  36 }
  37
  38 #else
  39 # include <stdlib.h>
  40
  41 # ifdef HAVE_DIRENT_H
  42 #  include <dirent.h>
  43 # else
  44 #  ifdef HAVE_SYS_DIR_H
  45 #   include <sys/dir.h>
  46 #  endif
  47 # endif
  48
  49 # ifndef PATH_MAX
  50 #  ifdef MAXPATHLEN
  51 #   define PATH_MAX MAXPATHLEN
  52 #  else
  53 #   ifdef MAX_PATH
  54 #    define PATH_MAX MAX_PATH
  55 #   else
  56 #    ifdef _MAX_PATH
  57 #     define PATH_MAX _MAX_PATH
  58 #    else
  59 #     define PATH_MAX 255
  60 #    endif
  61 #   endif
  62 #  endif
  63 # endif
  64
  65 size_t path_name_max()
  66 {
  67   return PATH_MAX;
  68 }
  69 #endif /* _POSIX_VERSION */
  70
  71 // s-it2-mode