Subversion Repositories SvarDOS

/*

 * This file is part of pkginst (SvarDOS).

 *

 * Reads environment variables that will be used by pkginst.

 * Returns 0 on success, non-zero otherwise.

 *

 * Copyright (C) 2012-2021 Mateusz Viste

 */

#include <stdio.h>    /* snprintf() */

#include <stdlib.h>   /* getenv() */

#include "kprintf.h"  /* kprintf(), kputs() */

#include "readenv.h"

int readenv(char **dosdir, char *cfgfile, int cfgfilemaxlen) {

  char *cfg;

  /* check if %DOSDIR% is set, and retrieve it */

  *dosdir = getenv("DOSDIR");

  if (*dosdir == NULL) {

    kitten_puts(2, 2, "%DOSDIR% not set! You should make it point to the FreeDOS main directory.");

    kitten_puts(2, 3, "Example: SET DOSDIR=C:\\FDOS");

    return(-1);

  }

  /* look for the FDNPKG.CFG env. variable */

  cfg = getenv("FDNPKG.CFG");

  cfgfilemaxlen -= 1; /* make room for the null terminator */

  if (cfg != NULL) {

    snprintf(cfgfile, cfgfilemaxlen, "%s", cfg);

  } else { /* not set, so fallback to hardcoded location */

    snprintf(cfgfile, cfgfilemaxlen, "%s\\bin\\fdnpkg.cfg", *dosdir);

  }

  return(0);

}