gnu/dist/groff/src/libs/libgroff/maxfilename.cpp

   1 /*      $NetBSD$        */
   2
   3 // -*- C++ -*-
   4 /* Copyright (C) 1992, 2001, 2003, 2005 Free Software Foundation, Inc.
   5      Written by James Clark (jjc@jclark.com)
   6
   7 This file is part of groff.
   8
   9 groff is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 2, or (at your option) any later
  12 version.
  13
  14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License along
  20 with groff; see the file COPYING.  If not, write to the Free Software
  21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  22
  23 /* file_name_max(dir) does the same as pathconf(dir, _PC_NAME_MAX) */
  24
  25 #include "lib.h"
  26
  27 #include <sys/types.h>
  28
  29 #ifdef HAVE_UNISTD_H
  30 #include <unistd.h>
  31 #endif /* HAVE_UNISTD_H */
  32
  33 #ifdef _POSIX_VERSION
  34
  35 size_t file_name_max(const char *fname)
  36 {
  37   return pathconf(fname, _PC_NAME_MAX);
  38 }
  39
  40 #else /* not _POSIX_VERSION */
  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 NAME_MAX
  51 #ifdef MAXNAMLEN
  52 #define NAME_MAX MAXNAMLEN
  53 #else /* !MAXNAMLEN */
  54 #ifdef MAXNAMELEN
  55 #define NAME_MAX MAXNAMELEN
  56 #else /* !MAXNAMELEN */
  57 #define NAME_MAX 14
  58 #endif /* !MAXNAMELEN */
  59 #endif /* !MAXNAMLEN */
  60 #endif /* !NAME_MAX */
  61
  62 size_t file_name_max(const char *)
  63 {
  64   return NAME_MAX;
  65 }
  66
  67 #endif /* not _POSIX_VERSION */