[RELEASED] zip / gzip native multiplatfrom plugin

Hi.

Sorry for your first issue. This is a problem that comes from the Asset Store. Many users upgraded from zip->7zp,lzma... without issues. Please contact the Unity Asset Store team. If you cannot resolve your issue tell me and I will contact them also.

2. This issue is solved in the next version, which is still in beta. But I can send you the 1.44beta. There you should set for windows os "lzip.setEncoding(65001);" to get the desired encoding.

Send me a personal message with your email so I can send you the beta version.

 

When you say "encryption is not supported," do you mean it is not a feature of the asset or it is not possible to use this with encryption?

I am looking to use this in combination with Easy Save and it's encryption.

 

Hi.

Version 1.43 does not support encryption/decryption of password protected zip archives.

However 1.44 will. It is in a final stage of testing before getting uploaded to the Asset Store.

 

update version 1.44 [Major Update]

(The previous 1.43 version has been kept as a unitypackage file.)


- Added Encryption/Decryption support.

- Added bz2 as an alternative compression/decompression method of zip archives.

- WSA supports now FileBuffers.

- On WSA encryption is supported only on UWP10 x64.

- Better Unicode support on Windows platforms.

- Faster and more reliable getInfo function. (intermediate file is not used anymore.)

- Low level functions have been removed due to inconsistency between platforms.

- Added the ability to compress a list of files into a single archive.

 

HOTFIX notification for iOS builds (1.44 version and up):

In your project's "Build Settings->Linking->Other Linker flags" add -lz

 

Hi all.

There is an issue with the bz2 method in the last update on MacOS/iOS platforms. Avoid using this method for now on these platforms until a fix.

 

update version 1.44.2

- iOS/MacOS Hotfix.

- bz2 method removed for MacOS/iOS/watchOS/tvOS because it is not working correctly.

 

update version 1.45

- Disabled encryption/decryption for WSA due to certification reasons.

 

Is there some file size restriction now, because after I updated your plugin I can't unzip my 350mb zip file before it worked fine?

 

Hello. There should be no file restriction.

On what platform do you have this issue and with which app did you create the zip?

because the newer updates have changed I am including in the package also the previous 1.43 version.

I will look into it.

 

The zip file is created on the server, and I am trying to unzip in Editor and Android, it worked before the update.
Had changed the zip file from your demo scene with my file, and unzip failed.

 

It would help if you could send me a zip file that fails.

 

In any case if you are not using encryption/decryption it is fine to revert to the 1.43 version

 

The old version works.

 

It could be the implementation of the deflate64 algorithm. Some servers produce zip file in this format and not all unzippers support it.

 

Ok. I nailed it down. It has to do with the deflate64 algo the produces the abortion.

 

Hi, Elias.
Could you please add a method to get date/time info for zip entry?

 

Hi.

I will try to add this in the next update.

 

Ok. I have created the function. I just need to test it on all platforms and I will update the Asset Store project.

 

update version 1.46

- Added the getEntryDateTime function, to get DateTime for a specific entry

- Updated the file sample links of the demos, due to a server switch.

 

Hi Elias,
In the lzip.cs file, In the compressDir function you have this line:

if (!includeRoot) s = s.Replace(root + "/", ""); ​

The issue I have faced with this is that it removes occurrence of the root everywhere in the path. For example, if the file path from root is something like "abc/def/qwertyabc/file.txt" where "abc/" is the root, the file gets placed as def/qwertyfile.txt (the second "abc/" aslo gets removed).

 

Yes. You are right about this one. I will upload a fix asap.

The function is a high level one anyway so it would be easy for users to modify it.

 

Ok. Use this instead of the previous line you mentioned and you should be ok:

Code (CSharp):

1. if (!includeRoot) s = s.Substring(root.Length + 1);

 

Thank you Elias.
Yes, this is easy to fix . We thought to let you know about this so that you could fix it.

Thank you for the prompt reply

 

Thanks for finding this.

 

update version 1.47

- Added the entry2FixedBuffer function to decompress an entry to a fixed size buffer.

- The getFileInfo is now much faster on zip archives with thousands of files.

 

Hello

I'm using method the following method to get info about contents of my .gz package:

Code (CSharp):

1. public static long getFileInfo(string zipArchive, string path = null, byte[] FileBuffer = null)

The method returns -1, meaning "Input file not found". I tried using both a gz archive in the local file storage and a file buffer. Both return -1. Replicated on both Android and Windows Editor using latest Asset Store version of the plugin.

Attached is an example file that can be used to replicate the problem. NOTE: Rename the file from test_file.txt.zip to test_file.txt.gz - gz files are not allowed as an attachment, zip files are.

 

Hi.

The getFileInfo function is meant to be used on .zip files and not on gz file containers.

gz is usually used on tar files that contain multiple archives.

If you want to get the uncompressed size of the gz file you can use this function:

Code (CSharp):

1. int gzipUncompressedSize = lzip.gzipUncompressedSize(File.ReadAllBytes(MyPath+"/test_file.txt.gz"));

 

I want to get contents of the package and then decompress them. How do I do that then?

 

In the testZip.cs of the demo, there is a gzip section. Look it up and follow it.

The gzip implementation is mainly geared to work with buffers. But a full gz file stream and tar.gz support is planned.

 

Hi,

I am a new to your "Zip / gzip Multiplatform Native Plugin" asset. I have an issue where when I run the code below, the code worked only if the directory (backgrounds folder in this case) of the zip archive entries already exists in the file system, if not the entries' directory won't be created automatically hence no files being extracted yet the result variable return 1 which means successfully run.

Here's the image of the zip archive created using lzip.compress_file. It consists only a "Backgrounds" folder

Code (csharp):

1.  
2. result = lzip.decompress_File(fileName, path, null, null, null, zipPassword);
3. if (result != 1)
4.   DebugExt.Log("Zip error code: " + result + "(" + fileName + ")");
5.  

 

Hello.

I tried to reproduce the issue following your case but it all worked fine. Could you please send me the zip file in question to investigate?

Thanks.

 

Hi,

Wow that was fast . Below is the link to the archive file, the contain are just 3 images i downloaded from iternet for testing purpose.

Link:
http://s000.tinyupload.com/index.php?file_id=89198941876792724309
archive password:
31C0AFA3

Thanks

 

Ok. It seems that there is a glitch when the zip archive is password protected, the directory is not created.
I will try for a fix asap.

 

Hi,

You are amazing. Your response is excellent.

Thanks

 

Hi. Thanks.

I have pinpointed the issue. Which platforms interest you the most?

 

Hi,

Sorry for late reply. The game is for Android and iOS. I am thinking you can take your time to fix the glitch, I can use without password archive and continue with work ,

Thanks

 

Ok the issue is fixed. I am compiling and testing the platforms. I will upload to the Store later today. If you need it today contact me by be a private message.

 

update version 1.49

- Hotfix for password encoded zip files not creating folders.
- Hotfix for the compressDir function.

 

Hello, I'm having a little issue getting my app submitted on iOS for TestFlight.
I have bitcode enabled, the documentation just says:
(bitcode enabled iOS plugins are provided in the plugins/ios/bitcode folder.)

but I'm not exactly sure what is the process to utilize those zip files mentioned on that folder.
Where do I exactly place them? On the XCode project or within Unity Project / Plugin folder?

Instruction is a little vague. Would appreciate any help to the right direction. Thanks!

 

Hello.
In the Assets\Plugins\iOS\bitcode folder you will find the compressed bitcode plugins.
Decompress the one you need in the Assets\Plugins\iOS folder.

 

Thank you for your prompt response.
I'll give this a shot.

 

Hello, I have a problem when I try to publish an app to the Windows Store, can you please help me with this?

 

I’m running into the same problem if I try to build an App for HoloLens with unity3d. Any hints???

 

Is it possible to create a zip archive containing files/folders without writing to the device's system storage (in-memory only) between each file addition? It appears that you'd need to use buffer2File for each entry, which saves/loads each time. Example:

Code (CSharp):

1. lzip.buffer2File(9, "Test.zip", "File1.xml", file1Bytes, true);
2. lzip.buffer2File(9, "Test.zip", "File2.xml", file2Bytes, true);
3. lzip.buffer2File(9, "Test.zip", "File3.xml", file3Bytes, true);

This would result in saving/loading "Test.zip" 3 times using the device's system storage.

In my case, I don't need the .zip file ever persisting on the user's device because it is being sent remotely, so I'd also have a final step

Code (CSharp):

1. var zipBytes = File.ReadAllBytes("Test.zip");
2. File.Delete("Test.zip");

It seems like a lot of excessive file IO if I just need to create a zip in-memory.

Is there any way to improve this?

 

Hi,
The error codes are documented for most methods in Instructions_ZIP.txt, but not for the GZip methods. Could you specify what the error codes mean? Thank you!

 

I purchased this because I need to zip together several memory streams into a single compressed stream in WebGL. Unfortunately, this doesn't seem to be supported.

Bummer.

 

Hi Elias,

I've recently started using your plugin and have run into an issue opening zip files created on windows on a mac. I am using zlib compression unencrypted and receive the error "unsupported compression method 99" when attempting to run unzip <path> via the terminal or "Error 1 - operation not permitted" if I simply double click the file. My software also seems unable to open the file on iOS so I suspect the problem there is related. If I compress the same file with the same code on a mac, I can open it on any system. I have attached a copy of the zip in question.

Thank you

 

Hello.

Thanks for your input. I will investigate this.

The plugin undergoes a major rewrite now and will be out soon.

 

I've identified my problem and found a solution. The issue was twofold, Mac cannot read windows AES encryption without a plugin and after stripping the encryption I found my problems were also caused by an alteration in the function call when updating from the Oct 2017 version to the Dec 2017 version. Specifically the reordering of archive and destination, as well as the addition of includeRoot as an optional call (either that or the version of the plugin I had inherited from the previous developer was significantly modified) caused my software to look for the archive contents in a directory that did not exist.