/*
   xls2xml: Converts from Microsoft Excel files to XML.
   Copyright 1999  Roberto Arturo Tena Sanchez

   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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 */
/*
   Roberto Arturo Tena Sanchez <arturo@directmail.org>
 */


#include <assert.h>
#include <biffrec.h>
#include <param.h>


/* 5 11 14=end of records 15 19 */
int
get_next_record (COLEFILE * xlsfile)
{
  U32 bytes;
  U16 b2;

  assert_return (xls2xml, xlsfile != NULL, 19);

  /* clean record */
  parameters->record.opcode = parameters->record.size = 0;

  /* read opcode */
  bytes = cole_fread (xlsfile, &b2, 2, NULL);
  if (bytes != 2) {
    if (cole_feof (xlsfile)) {
      if (parameters->dont_care_end)
        return 14;
      else
        return 5;
    }
    return 11;
  }
  parameters->record.opcode = _xls2xml_sreadU16 (((U8*)(&b2)));

  /* read size */
  bytes = cole_fread (xlsfile, &b2, 2, NULL);
  if (bytes != 2) {
    if (cole_feof (xlsfile)) {
      if (parameters->dont_care_end)
        return 14;
      else
        return 5;
    }
    return 11;
  }
  parameters->record.size = _xls2xml_sreadU16 (((U8*)(&b2)));
  test (parameters->record.size <= MAX_RECORD_SIZE, 15);

  if (parameters->record.size > 0) {
    /* read info */
    bytes = cole_fread (xlsfile, parameters->record.info,
			parameters->record.size, NULL);
    if (bytes != parameters->record.size) {
      if (cole_feof (xlsfile)) {
        if (parameters->dont_care_end)
          return 14;
        else
          return 5;
      }
      return 11;
    }
  }

  return 0;
}