src/libs/libgroff/maxfilename.cpp

   1 // -*- C++ -*-
   2 /* Copyright (C) 1992, 2001, 2003, 2005 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.com)
   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 /* file_name_max(dir) does the same as pathconf(dir, _PC_NAME_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 file_name_max(const char *fname)
  34 {
  35   return pathconf(fname, _PC_NAME_MAX);
  36 }
  37
  38 #else /* not _POSIX_VERSION */
  39
  40 #ifdef HAVE_DIRENT_H
  41 #include <dirent.h>
  42 #else /* not HAVE_DIRENT_H */
  43 #ifdef HAVE_SYS_DIR_H
  44 #include <sys/dir.h>
  45 #endif /* HAVE_SYS_DIR_H */
  46 #endif /* not HAVE_DIRENT_H */
  47
  48 #ifndef NAME_MAX
  49 #ifdef MAXNAMLEN
  50 #define NAME_MAX MAXNAMLEN
  51 #else /* !MAXNAMLEN */
  52 #ifdef MAXNAMELEN
  53 #define NAME_MAX MAXNAMELEN
  54 #else /* !MAXNAMELEN */
  55 #define NAME_MAX 14
  56 #endif /* !MAXNAMELEN */
  57 #endif /* !MAXNAMLEN */
  58 #endif /* !NAME_MAX */
  59
  60 size_t file_name_max(const char *)
  61 {
  62   return NAME_MAX;
  63 }
  64
  65 #endif /* not _POSIX_VERSION */