/* progname.h: Declarations for argv[0] equivalents.

   Copyright 1994, 1996, 2008, 2010-2019 Karl Berry.
   Copyright 1999, 2005 Olaf Weber.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this library; if not, see <http://www.gnu.org/licenses/>.  */

#ifndef KPATHSEA_PROGNAME_H
#define KPATHSEA_PROGNAME_H

#include <kpathsea/c-proto.h>
#include <kpathsea/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/* Return directory ARGV0 comes from.  Check PATH if ARGV0 is not
   absolute.  */

#if !defined (WIN32)
extern KPSEDLL string kpathsea_selfdir (kpathsea kpse, const_string argv0);
#endif

/* Set the two members `invocation_name' and `invocation_short_name'
   in the KPSE instance to a copy of ARGV0 and everything in ARGV0 after
   the last directory separator, respectively. Set `program_name' (also in
   the KPSE instance) to a copy of PROGNAME or the value of
   kpse_invocation_short_name if PROGNAME is NULL. This function also
   sets the SELFAUTO* environment variables.  */

extern KPSEDLL void kpathsea_set_program_name (kpathsea kpse,
                            const_string argv0, const_string progname);

/* See also `kpathsea_reset_program_name', which is defined in tex-file.c.
   That function is to be used to set kpse->program_name to a different
   value.  It clears the path searching information, to ensure that
   the search paths are appropriate to the new name.  */


#if defined (KPSE_COMPAT_API)
#if !defined (WIN32)
extern KPSEDLL string kpse_selfdir (const_string argv0);
#endif

extern KPSEDLL void kpse_set_program_name (const_string argv0,
                                      const_string progname);
#endif /* KPSE_COMPAT_API */

/* Returns ARGV0 with any leading path and on some systems the suffix
   for executables stripped off.  This returns a new string.  */

extern KPSEDLL string kpse_program_basename (const_string argv0);

#ifdef __cplusplus
}
#endif

#endif /* not KPATHSEA_PROGNAME_H */