You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ft_read_headshape.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/external/fieldtrip/fileio
    
    the code of the file until where you have to start completion: function [shape] = ft_read_headshape(filename, varargin)

% FT_READ_HEADSHAPE reads the fiducials and/or the measured headshape
% from a variety of files (like CTF and Polhemus). The headshape and
% fiducials can for example be used for coregistration.
%
% Use as
%   [shape] = ft_read_headshape(filename, ...)
%
% Additional options should be specified in key-value pairs and can be
%   'format'		  = string, see below
%   'coordinates' = string, e.g. 'head' or 'dewar' (CTF)
%   'unit'        = string, e.g. 'cm'
%
% Supported input formats are
%   'ctf_*'
%   '4d_*'
%   'itab_asc'
%   'neuromag_*'
%   'mne_source'
%   'yokogawa_*'
%   'polhemus_*'
%   'spmeeg_mat'
%   'matlab'
%   'freesurfer_*'
%   'off'
%   'stl'          STereoLithography file format, for use with CAD and generic 3D mesh editing programs
%   'vtk'          Visualization ToolKit file format, for use with paraview
%   'mne_*'        MNE surface description in ascii format ('mne_tri')
%                  or MNE source grid in ascii format, described as 3D
%                  points ('mne_pos')
%   'netmeg'
%   'vista'
%   'tet'
%   'tetgen_ele'
%
% See also FT_READ_VOL, FT_READ_SENS, FT_WRITE_HEADSHAPE

% Copyright (C) 2008-2012 Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
%    FieldTrip 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 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip 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 FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id: ft_read_headshape.m 7242 2012-12-21 08:42:56Z roboos $

% Check the input, if filename is a cell-array, call ft_read_headshape recursively and combine the outputs.
% This is used to read the left and right hemisphere of a Freesurfer cortical segmentation.
if iscell(filename)
  for i=1:numel(filename)

    
function [shape] = ft_read_headshape(filename, varargin)

% FT_READ_HEADSHAPE reads the fiducials and/or the measured headshape
% from a variety of files (like CTF and Polhemus). The headshape and
% fiducials can for example be used for coregistration.
%
% Use as
%   [shape] = ft_read_headshape(filename, ...)
%
% Additional options should be specified in key-value pairs and can be
%   'format'		  = string, see below
%   'coordinates' = string, e.g. 'head' or 'dewar' (CTF)
%   'unit'        = string, e.g. 'cm'
%
% Supported input formats are
%   'ctf_*'
%   '4d_*'
%   'itab_asc'
%   'neuromag_*'
%   'mne_source'
%   'yokogawa_*'
%   'polhemus_*'
%   'spmeeg_mat'
%   'matlab'
%   'freesurfer_*'
%   'off'
%   'stl'          STereoLithography file format, for use with CAD and generic 3D mesh editing programs
%   'vtk'          Visualization ToolKit file format, for use with paraview
%   'mne_*'        MNE surface description in ascii format ('mne_tri')
%                  or MNE source grid in ascii format, described as 3D
%                  points ('mne_pos')
%   'netmeg'
%   'vista'
%   'tet'
%   'tetgen_ele'
%
% See also FT_READ_VOL, FT_READ_SENS, FT_WRITE_HEADSHAPE

% Copyright (C) 2008-2012 Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
%    FieldTrip 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 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip 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 FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id: ft_read_headshape.m 7242 2012-12-21 08:42:56Z roboos $

% Check the input, if filename is a cell-array, call ft_read_headshape recursively and combine the outputs.
% This is used to read the left and right hemisphere of a Freesurfer cortical segmentation.
if iscell(filename)
  for i=1:numel(filename)
    tmpshape = ft_read_headshape(filename{i}, varargin{:});
    [path,name,ext] = fileparts(filename{i});
    if strcmp(ext, '.inflated') && strcmp(name, 'lh')
      % assume freesurfer inflated mesh in mm, mni space
      % move the mesh a bit to the left, to avoid overlap with the right
      % hemisphere
      tmpshape.pnt(:,1) = tmpshape.pnt(:,1) - max(tmpshape.pnt(:,1)) - 10;
      
    elseif strcmp(ext, '.inflated') && strcmp(name, 'rh')
      % id.
      % move the mesh a bit to the right, to avoid overlap with the left
      % hemisphere
      tmpshape.pnt(:,1) = tmpshape.pnt(:,1) - min(tmpshape.pnt(:,1)) + 10;
    end