Compressing Zip with directory entries intact

Question

RebexZip does not add directory entries to the zip archive, is there a way I can force these to be added?

Rebexzip zip entries (2):

root.txt
a/file in directory a.txt

Winzip / Winrar zip entries (3):

root.txt
a/
a/file in directory a.txt

In this case "a/" is missing from rebex archive, causing a 3rd parties unzip function to fail. (they use java)

Code I am using to read the zip entries: http://www.roseindia.net/tutorial/java/corejava/zip/ShowEntries.html

This code also doesnt show directory: http://www.java-examples.com/determine-if-zip-entry-directory-example

==== Additional details to replicate

        using (ZipArchive zip = new ZipArchive(@"E:\\rebex3.zip"))
        {
            // This line is not calling 'CreateDirectory' internally for directories
            zip.Add(@"E:\z\*", @"\", Rebex.IO.TraversalMode.Recursive);

            // Manually adding directory & adding a file add the correct entries
            zip.CreateDirectory(@"\test");
            zip.AddFile(@"E:\temp\x.pdf", @"\test\x.pdf");
        }

produces the following entries output (note missing "a/")

root.txt
a/file in directory a.txt
test/
test/x.pdf

===========

Will you fix this or should I simply write my own method for adding directories to a zip archive recursively?

Comments

I need to consult it with developer who is on vacation now. We'll try to answer you later.

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I have worked around the problem by creating the folders manually, so this could be moved to wish list.

thank you, have a great 2014.

Answer 1

Rebex ZIP 2014 R1 adds ZipArchiveOptions.CreateDirectoryEntries option that causes directory entries to always be created.

To workaround the issue you reported, please enable the newly added option like this:

zip.Options.CreateDirectoryEntries = true;

Comments

Do you have a release schedule I can work towards or could you provide a pre-release version (I am a licensed user) thanks.

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Hi Chris, please send us your pre-release request on support@rebex.net from your registered emial and we will make one for you.

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Rebex ZIP 2014 R1 has just been released and includes this option.

Answer 2

Sorry it's taken a while to get back to you, I have tried the hot fix you sent me with the following directory structure:

E:>tree /F E:\z Folder PATH listing Volume serial number is 0839-D1FE E:\Z │ file in root.txt │ └───a │ file in folder a.txt │ └───b file in folder b.txt E:>

When I create a zip using the hotfix I get the following entries:

List of contents in zip file file in root.txt a/file in folder a.txt a/b/file in folder b.txt

When I create a zip via windows or winrar I get the following

List of contents in zip file z/ z/a/ z/a/b/ z/a/b/file in folder b.txt z/a/file in folder a.txt z/file in root.txt

I am using the following code and the HotfixBuild5135:

        using (ZipArchive zip = new ZipArchive(@"E:\\rebex3.zip"))
        {
            zip.Add(@"E:\z\*", @"\", Rebex.IO.TraversalMode.Recursive);
        }

Do I need to make any code changes, I am 100% sure I am using the correct DLL as I made a blank project.

Comments

Please try enabling the new option by adding zip.Options.CreateDirectoryEntries = true; to your code. It is false by default.

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Thanks, I can confirm it works now.

List of contents in zip file
file in root.txt
a/
a/file in folder a.txt
a/b/
a/b/file in folder b.txt