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How do I zip multiple directories and preserve structure

Asked by Michael on 13 Sep 2013

Let's say I have 3 directories, each with their own contents (files and subdirectories).

C:\foo1\ D:\foo2\ E:\foo3\

I want to zip these up so that the zip file contains the following directory structure: \foo1\ \foo2\ \foo3\

So far, I've figured this out: zip(myzipfile.zip,{foo1_path,foo2_path,foo3_path});

However, this will put all the contents of each of the directories into the zip file - it does not preserve the directory structure of having the actual 'foo1' folder listed in the zip file.

This is a weird one, but due to various permissions issues and other IT issues, this is the only way I can automate my zip file logging...

2 Comments

Walter Roberson on 13 Sep 2013

You cannot invoke an external zip program?

Michael on 16 Sep 2013

Nope, no external programs are available, and new programs cannot be installed.

Michael

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1 Answer

Answer by Jan Simon on 15 Sep 2013
Accepted answer

You can call the Java methods as in the zip() command. Some of the methods are not documented and might not work with future Matlab versions, but I have success with this from Matlab 6.5 to R2011b:

import java.io.*;
import java.util.zip.*;
fileOut = FileOutputStream('myFile.zip');
zipOut  = ZipOutputStream(fileOut);
% This InterruptibleStreamCopier is unsupported and may change without notice.
StreamCopier = ...     com.mathworks.mlwidgets.io.InterruptibleStreamCopier.getInterruptibleStreamCopier;
% You will need a loop over your filres from here...
fileIn = FileInputStream('C:\foo1\File1.txt');
zipObj = ZipEntry('foo1\File1.txt');         % <== relative path name
zipOut.putNextEntry(zipObj);
StreamCopier.copyStream(fileIn, zipOut);
fileIn.close;
zipOut.closeEntry;
% ...to here
% Close streams:
zipOut.close;
fileOut.close;

1 Comment

Michael on 16 Sep 2013

I implemented this in my code. It was kind of uglier than I would have liked, but it does work. I'm on R2012a -thanks!

Jan Simon

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