Following is my code for unizipping a '.zip' file. However, I get a error when I use it for a compressed folder (.zip). Can you help me rectify the error? If not, can you also suggest some way to directly parse the zip folder name and access the dir?

dt_opr = '05-29-2016';

output_folder = [mainpath datestr(dt_opr, 'yyyy-mm-dd') '\' ];

if exist([output_folder], 'dir') ~= 7
     mkdir(output_folder);
end

zip_files = dir([mainpath '*RPT.00013070*' datestr(dt_opr, 'yyyymmdd') '*.zip']);

unzip(zip_files.name, output_folder);

Answer 1

[Walter Roberson]

A) I suggest you re-write using fullfile()

B) You refer to zip_files.name but you constructed zip_files as a string. It looks to me as if at some point you had a dir() in there. But remember that if you dir() then you need to loop around the results, and remember that the .name fields does not include the directory, so you would normally need to fullfile() to reconstruct the complete path. Which is a problem if you are using wildcards on the directory because you would not know which directory you were in.

I think you might want to have a look at https://www.mathworks.com/matlabcentral/fileexchange/32226-recursive-directory-listing-enhanced-rdir

[Mihir Gadkari]

Thank you Walter! Yes, I had a dir() in there. I just noticed.

zip_files = dir([mainpath '*RPT.00013070*' datestr(dt_opr, 'yyyymmdd') '*.zip']);

[Mihir Gadkari]

Walter, It worked with using a fullfile() function before the unzip(). Thank you so much for the input!

zip_files = dir([mainpath '*RPT.00013070*' datestr(dt_opr, 'yyyymmdd') '*.zip']);

f = fullfile(mainpath, zip_files.name);

unzip(f, output_folder);

[Stephen23]

@Mihir Gadkari: often it is better to use fullpath for every filepath:

str = datestr(dt_opr, 'yyyymmdd');
str = sprintf('*RPT.00013070*%s*.zip',str);
str = fullpath(mainpath,str);
zip_files = dir(str);