/*
* adifdeb.c
*
* (c) Copyright 1997-2001 DF7BE
*  Free Software under property of the
*  GNU General Public License
*
*  Date : 02.03.2000
*
*
*   Logbuchprogramm DF7BE
*   Amateur-Radio log by DF7BE
*   Zusatzmodul fuer ADIF-Import
*   deutsche Version
*   Clipper Sommer 87 oder 5.2
*
*  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 2 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, write to the Free Software
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA ( or visit
*  their web site at http://www.gnu.org/ ).
*
*
*  Modification documentation
*
*  +------------+-------------------------+----------------------------------+
*  + Date       ! Name and Call           ! Modification                     !
*  +------------+-------------------------+----------------------------------+
*  ! 02.03.2000 ! W.Brunken        DF7BE  ! first creation                   !
*  +------------+-------------------------+----------------------------------+
*
*  Compiling:
*
*  gcc adifdeb.c -o adifdeb.exe  (DJGPP)
*  gcc adifdeb.c -o adifdeb      (UNIX,LINUX)
*  cc  adifdeb.c -o adifdeb      (UNIX)
*  MICROSOFT QUICK C 2.5 :  use Make Menu
*   set at Options model to "small"
*
*/

#include <stdio.h>
#include <stdlib.h>

FILE * f;

void main(int argc , char * argv[])
{
  int ch;
  int e;
  long s;

  e = 80 ;  /* Anzahl der auszugebenden Zeichen */

  if( argc != 3 )
  {
    printf("usage : adifdeb <filename> <byte-position>\n");
    printf("\n");
    printf("Copyright (c) 1997-2001 DF7BE\n");
    printf("\n");
    printf("This program is free software; you can redistribute it and/or modify\n");
    printf("it under the terms of the GNU General Public License as published by\n");
    printf("the Free Software Foundation; either version 2 of the license, or\n");
    printf("(at your option) any later version.\n");
    printf("\n");
    printf("This program is distributed in the hope that it will be useful,\n");
    printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
    printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
    printf("GNU General Public License for more details.\n");
    printf("You should have received a copy of the GNU General Public License\n");
    printf("along with this program; if not, write to the Free Software\n");
    printf("Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA ( or visit\n");
    printf("their web site at http://www.gnu.org/ ).\n");

    exit (1);
  }

  s = atol((char *) argv[2]);

  if (((f=fopen(argv[1],"rb")) == NULL))
  {
    printf("Kann Datei %s nicht oeffnen\n", argv[1]);
    exit(1);
  }
  /* seek to position */
  if ((fseek(f,s,SEEK_SET) != NULL))
  {
    printf("fseek-Fehler\n");
    fclose(f);
    exit(1);
  }

  while ( e != 0 )
  {
   ch = fgetc(f);
   if ( ch == EOF )
   {
     printf("\nEOF erreicht\n");
     fclose(f);
     exit(1);
   }
   printf("%c",((unsigned char) ch));
   e--;
  } /* while */
  printf("\n");
  fclose(f);
  exit (0);
}