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/* Copyright (C) 2013 D. V. Wiebe
*
***************************************************************************
*
* This file is part of the GetData project.
*
* GetData 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 2.1 of the License, or (at your
* option) any later version.
*
* GetData 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 GetData; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "gd_matlab.h"
/*
% GD_REFERENCE Set or report the reference field name
%
% F = GD_REFERENCE(DIRFILE[,FIELD_CODE])
% sets the reference field of DIRFILE to FIELD_CODE, if given and
% not numeric zero. Returns the reference field, F, after possibly
% updating it.
%
% The DIRFILE object should have previously been created with GD_OPEN.
%
% See the documentation on the C API function gd_reference(3) in section 3
% of the UNIX manual for more details.
%
% See also GD_NFRAMES, GD_OPEN
*/
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
DIRFILE *D;
const char *s;
char *field_code = NULL;
GDMX_CHECK_RHS2(1,2);
D = gdmx_to_dirfile(prhs[0]);
if (nrhs > 1)
field_code = gdmx_to_string(prhs, 1, 1);
s = gd_reference(D, field_code);
mxFree(field_code);
gdmx_err(D, 0);
plhs[0] = mxCreateString(s);
}
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