/* proginit.c: useful initializations for DVI drivers.

   Copyright 1994, 1995, 1996, 2008 Karl Berry.
   Copyright 1997, 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/>.  */

#include <kpathsea/config.h>
#include <kpathsea/c-pathch.h>
#include <kpathsea/proginit.h>
#include <kpathsea/tex-file.h>


/* These initializations were common to all the drivers modified for
   kpathsea, so a single routine seemed in order.  Kind of a bollixed-up
   mess, but still better than repeating the code.  */

void
kpathsea_init_prog (kpathsea kpse, const_string prefix,  unsigned dpi,  
                    const_string mode, const_string fallback)
{
  string font_var = concat (prefix, "FONTS");
  string header_var = concat (prefix, "HEADERS");
  string makepk_var = concat (prefix, "MAKEPK");
  string size_var = concat (prefix, "SIZES");
  
  /* Do both `pk_format' and `any_glyph_format' for the sake of xdvi; in
     general, mktexpk might apply to either, and the program will ask
     for the one it wants.  */
     
  /* Might have a program-specific name for mktexpk itself.  */
  if (getenv (makepk_var)) {
  /* If we did, we want to enable the program, I think.  */
    kpathsea_set_program_enabled (kpse, kpse_pk_format, 1, kpse_src_env);
    kpathsea_set_program_enabled (kpse, kpse_any_glyph_format, 1, kpse_src_env);

    kpse->format_info[kpse_pk_format].program
      = kpse->format_info[kpse_any_glyph_format].program
      = getenv (makepk_var);
  }

  /* A couple font paths have traditionally had application-specific
     environment variables to override all else; namely, XDVIFONTS and
     DVIPSHEADERS.  So set those if we have them.  */
  kpse->format_info[kpse_pk_format].override_path
    = kpse->format_info[kpse_gf_format].override_path
    = kpse->format_info[kpse_any_glyph_format].override_path
    = kpse->format_info[kpse_tfm_format].override_path
    = getenv (font_var);

  kpse->format_info[kpse_tex_ps_header_format].override_path
    = getenv (header_var);

  kpathsea_init_fallback_resolutions (kpse, size_var);
  kpathsea_xputenv_int (kpse, "MAKETEX_BASE_DPI", dpi);
  kpse->fallback_font = fallback;
  
  /* Ugliness.  See comments in kpse_make_tex in kpathsea/tex-make.c.  */
  kpathsea_xputenv (kpse, "MAKETEX_MODE", mode ? mode : DIR_SEP_STRING);
  
  free (font_var);
  free (header_var);
  free (makepk_var);
  free (size_var);
}

#if defined (KPSE_COMPAT_API)
void
kpse_init_prog (const_string prefix,  unsigned dpi,  
                const_string mode, const_string fallback)
{
    kpathsea_init_prog(kpse_def,prefix,dpi,mode,fallback);
}
#endif
