/*============================================================================

    WCSLIB 4.3 - an implementation of the FITS WCS standard.
    Copyright (C) 1995-2007, Mark Calabretta

    This file is part of WCSLIB.

    WCSLIB 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 3 of the License, or (at your
    option) any later version.

    WCSLIB 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 WCSLIB.  If not, see <http://www.gnu.org/licenses/>.

    Correspondence concerning WCSLIB may be directed to:
       Internet email: mcalabre@atnf.csiro.au
       Postal address: Dr. Mark Calabretta
                       Australia Telescope National Facility, CSIRO
                       PO Box 76
                       Epping NSW 1710
                       AUSTRALIA

    Author: Mark Calabretta, Australia Telescope National Facility
    http://www.atnf.csiro.au/~mcalabre/index.html
    $Id: tofits.c,v 4.3 2007/12/27 05:35:51 cal103 Exp $
*=============================================================================
*
*   tofits turns a list of FITS header keyrecords, one per line, into a proper
*   FITS header by padding them with blanks to 80 characters and stripping
*   out newline characters.  It also pads the header to an integral number
*   of 2880-byte blocks if necessary.
*
*   It operates as a filter, e.g.:
*
*       tofits < infile > outfile
*
*===========================================================================*/

#include <stdio.h>

int main()

{
  int c, i = 0, nkeyrec = 0;

  while ((c = getchar()) != EOF) {
    if (c == '\n') {
      /* Blank-fill the keyrecord. */
      while (i++ < 80) {
        putchar(' ');
      }
      i = 0;
      nkeyrec++;

    } else {
      putchar(c);
      i++;
    }
  }

  /* Pad to a multiple of 2880-bytes. */
  if (nkeyrec %= 36) {
    while (nkeyrec++ < 36) {
      i = 0;
      while (i++ < 80) {
        putchar(' ');
      }
    }
  }

  return 0;
}