view lib/dirname.c @ 12212:8bf6ff9a34bd

dirname: split into dirname-lgpl dirname.h is proving quite useful from multiple LGPL modules, given the number of trailing slash bugs fixed in syscalls; only the calls to xalloc_die need to remain GPL. * modules/dirname-lgpl: New module. * modules/dirname (Files): Move library-safe files into dirname-lgpl. (Depends-on): Add dirname-lgpl. (configure.ac): Declare witness. * modules/double-slash-root (License): Relax license. * lib/dirname.h (base_name, dir_name): Only declare when using GPL module. * lib/dirname.c (dir_len, mdir_name): Move... * lib/dirname-lgpl.c: ...into new file. * lib/basename.c (last_component, base_len): Move... * lib/basename-lgpl.c: ...into new file. * m4/dirname.m4 (gl_DIRNAME_LGPL): New macro. (gl_DIRNAME): Use it. * MODULES.html.sh (Enhancements for POSIX:2008 functions): Mention new module. * modules/dirname-tests (Depends-on): Add progname. * tests/test-dirname.c (program_name): Delete. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Thu, 29 Oct 2009 10:43:31 -0600
parents c1ef4ce880fc
children b5e42ef33b49
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/* dirname.c -- return all but the last element in a file name

   Copyright (C) 1990, 1998, 2000, 2001, 2003, 2004, 2005, 2006, 2009
   Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT 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
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include "dirname.h"

#include <stdlib.h>
#include <string.h>
#include "xalloc.h"

/* Just like mdir_name (dirname-lgpl.c), except, rather than
   returning NULL upon malloc failure, here, we report the
   "memory exhausted" condition and exit.  */

char *
dir_name (char const *file)
{
  char *result = mdir_name (file);
  if (!result)
    xalloc_die ();
  return result;
}