- #Cannot extract zip file on mac for windows how to
- #Cannot extract zip file on mac for windows mac os
- #Cannot extract zip file on mac for windows zip file
- #Cannot extract zip file on mac for windows archive
- #Cannot extract zip file on mac for windows code
#Cannot extract zip file on mac for windows code
It's just one result so not generalizable yet, but it looks plausible.Įxample code for your scenario: using (ZipFile zip = new ZipFile() This is the result the DotNetZip user has reported. If the theory is correct, it should open with no problem on the Mac, every time. I do know that if you use DotNetZip, and use the normal ZipFile class, and save to a seekable stream (like a filesystem file), you will get a zip that does not have bit 3 set. I don't know if SharpZipLib can be convinced to do that.
#Cannot extract zip file on mac for windows zip file
As near as I can tell, the OSX zip reader is broken, and cannot handle bit 3, so the workaround is to produce a zip file with bit 3 unset. On the DotNetZip forums, we had a discussion about what to do about the problem. There's been some impedance mismatch on the communication with the person who has the OSX machine - so it is unresolved as yet.īut, if this theory holds, it would explain your situation: that WinRar and any Windows machine can open the file, but OSX cannot. So the theory is that bit 3 causes the problem. So I am using "bit 3" as a shorthand for all that. Actually it's not as simple as just flipping one bit - the presence of the bit signals the presence of other metadata. The same zip contents produced without bit 3, allows the zip file to be opened. DotNetZip also has a way to produce a zipfile as it is streamed out, and it will also set bit-3 in the zip file if used in this way, although normally DotNetZip will produce a zipfile with bit-3 unset in it.įrom what we can tell, when bit 3 is set, the OSX zip reader (whatever it is - like I said I'm not familiar with OSX) chokes on the zip file. It was intended to support streaming generation of archives, in the way that SharpZipLib works. PKWare added bit 3 to the spec 17 years ago. At this point the most promising theory is that OSX does not like "bit 3" in the "general purpose bitfield" in the header of each zip entry.īit 3 is not new. One of the people using the library is having a problem that seems similar to what you are seeing.
NET, unrelated to SharpZipLib.Ĭurrently on the user forums for DotNetZip, there's a discussion going on about zip files generated by DotNetZip that cannot be read on OSX. I've spent some time wading through the zip spec, and actually I wrote DotNetZip, which is a zip library for. I don't know for sure, because I am not very familiar with either SharpZipLib or OSX, but I still might have some useful insight for you. I wonder if it is needed to use zipStream.Write() in order to write directly to the stream?
I found the above code on the Internet, so I am not absolutely sure if the whole thing is correct.
#Cannot extract zip file on mac for windows mac os
zip file created manually with the same files on Windows is extracted without any problems on Windows and Mac OS X.
#Cannot extract zip file on mac for windows archive
But as soon as I try to unzip my archive on Mac OS X, it only creates a. ZipStream.Write(buffer, 0, buffer.Length) Īll works well under Windows, when I open the file e. ZipEntry entry = new ZipEntry(Path.GetFileName(pathname)) Using (var zipStream = new ZipOutputStream(outStream))īyte buffer = File.ReadAllBytes(pathname) Using (var outStream = new FileStream("Out2.zip", FileMode.Create)) I have an application which creates a zip file containing some JPEGs from a certain directory. #1.Argh, today is the day of stupid problems and me being an idiot.
Now, tap on Open In… from the options and select the appropriate app to open and extract the contents of the zip file. Tap on the zip file (or just select it) and then tap on the share icon. Or you might have zip files in your Dropbox/iCloud Drive folder. Usually, attachments in the mail app might be zip files.
#Cannot extract zip file on mac for windows how to
Here’s a bunch of these: How to Unzip Compressed files On the iPhone/iPad Using Zip Extractor Apps for iOSīefore we dive into the list, here’s a simple tip to open zip files using these apps. And so, if you wish to open the zip file on your iPhone/iPad, you’ll have to rely on third-party apps.įortunately, there are many free and paid apps in the App Store that will help you to extract zip files right on your iPhone/iPad. One of them is to open zip files: there no stock app or feature that lets you open/extract zip files. However, there are a few things which you cannot do it. The iPhone is a great smartphone that can do a variety of things.