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: importcif.m
    path of file: ./repos/spinw/swfiles/@cif
    
    the code of the file until where you have to start completion: function [cifdat, source, isfile] = importcif(~, dataStr)
% imports .cif data from file, web or string

% if exist(dataStr,'file') == 2
%     % get the name of the file
%     fid = fopen(dataStr);
%     source = fopen(fid);
%     fclose(fid);
%     
%     cifStr = regexp(fileread(dataStr), ['(?:' sprintf('\n') ')+'], 'split');
%     isfile = true;
%     
% elseif numel(dataStr) < 200
%     % try to load it from the web
%     try

    
function [cifdat, source, isfile] = importcif(~, dataStr)
% imports .cif data from file, web or string

% if exist(dataStr,'file') == 2
%     % get the name of the file
%     fid = fopen(dataStr);
%     source = fopen(fid);
%     fclose(fid);
%     
%     cifStr = regexp(fileread(dataStr), ['(?:' sprintf('\n') ')+'], 'split');
%     isfile = true;
%     
% elseif numel(dataStr) < 200
%     % try to load it from the web
%     try
%         %cifStr = char(webread(dataStr)');
%         cifStr = urlread(dataStr);
%     catch
%         error('cif:importcif:WrongInput','The requested data cannot be found!')
%     end