/* @source nthseq application
**
** Get nth sequence in a file of sequences
**
** @author Copyright (C) Gary Williams (gwilliam@hgmp.mrc.ac.uk)
** 14 Sept 1999 - GWW - written
** @@
**
** 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.
******************************************************************************/

#include "emboss.h"




/* @prog nthseq ***************************************************************
**
** Writes only one sequence from a multiple set of sequences
**
******************************************************************************/

int main(int argc, char **argv)
{

    AjPSeqall seqall;
    AjPSeqout seqout;
    AjPSeq seq = NULL;
    ajint n;
    ajint count;

    embInit("nthseq", argc, argv);

    seqall = ajAcdGetSeqall("sequence");
    n      = ajAcdGetInt("number");
    seqout = ajAcdGetSeqout("outseq");

    count = 0;
    while(ajSeqallNext(seqall, &seq))
	if(++count == n)
	    break;

    if(count != n)
	ajErr("No such sequence - only %d sequences were input.", count);
    else
        ajSeqoutWriteSeq(seqout, seq);

    ajSeqoutClose(seqout);

    ajSeqallDel(&seqall);
    ajSeqDel(&seq);
    ajSeqoutDel(&seqout);

    embExit();

    return 0;
}