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I have an application that take a zip file as input in Java.
My application would decompress the zip file and inside the zip file there are some file contains filename exceeds 256 chars
Could I modify the filename of a file in zip without decompression
OS : linux/mac
It’s more of a limitation of the file system used, than the OS itself.
You can only change this by formatting the drives to a different file system that supports longer file names.
Why you would need a file name that is couple of miles long is beyond me. But only advise I can give is, try to shorten the file name.
::EDIT::
Since you updated your question. Here’s the correct answer. 🙂
Typically, your approach is correct. Although if your zip contains longer filenames, you can truncate them. (Take the first, 250, ignore the rest. Now, you may have duplicate filenames. Add a number at the end coz you got 5 chars left)
Another option is to ask the user to enter a new file name.
It is possible to edit the zip file itself, as long as you know how it is structured .etc.
I’m not aware that Java built-in APIs allow editing zip files. Although a while back, I came across this library names DotNetZip for Microsoft.NET which allows all the typical functionality plus editing the entries inside a zip file, encryption, passwords .etc. (it is awesome btw)
Look for a similar library for Java.