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/* shell.c -- tilde utility functions that are normally provided by
bash when readline is linked as part of the shell. */
/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
This file is part of the GNU Tilde Library.
The GNU Tilde Library 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.
The GNU Tilde Library 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 the GNU Tilde Library. If not, see <http://www.gnu.org/licenses/>.
*/
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined (HAVE_STDLIB_H)
# include <stdlib.h>
#else
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
#if defined (HAVE_STRING_H)
# include <string.h>
#else
# include <strings.h>
#endif /* !HAVE_STRING_H */
#include <pwd.h>
#if !defined (HAVE_GETPW_DECLS)
extern struct passwd *getpwuid ();
#endif /* !HAVE_GETPW_DECLS */
char *
get_env_value (char *varname)
{
return ((char *)getenv (varname));
}
/* If we're not using $HOME, assume that the passwd file information won't
change while this shell instance is running. */
char *
get_home_dir (void)
{
static char *home_dir = (char *)NULL;
struct passwd *entry;
if (home_dir)
return (home_dir);
#if defined (HAVE_GETPWUID)
entry = getpwuid (getuid ());
if (entry)
home_dir = savestring (entry->pw_dir);
#endif
#if defined (HAVE_GETPWENT)
endpwent (); /* some systems need this */
#endif
return (home_dir);
}
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