On Thu, 19 Mar 2026 20:52:36 GMT, Eirik Bjørsnøs <[email protected]> wrote:

>> Please review this PR which improves validation of unmappable characters in 
>> names in the `ZipFileSystem` and `ZipFileOutputStream` APIs.
>> 
>> Currently, `ZipFileSystem::getPath` and `ZipFileOutputStream:putNextEntry` 
>> both throw `IllegalArgumentException` when rejecting a path or entry name 
>> which cannot be encoded with the given charset. 
>> 
>> This PR fixes `ZipFileSystem::getPath` to instead throw 
>> `InvalidPathException` as specified. Similarly, 
>> `ZipOutputStream::putNextEntry` is updated to throw `ZipException` a 
>> specified.
>> 
>> Related, `ZipOutputStream::putNextEntry` is updated to reject unmappable 
>> ZipEntry comments in a similar fashion.
>> 
>> This change effectively means that `ZipOutputStream` now encodes names and 
>> comments twice, once in `putNextEntry` and second time in `writeCEN` when 
>> the stream is closed. An alternative would be to capture the encoded byte 
>> arrays in the `XEntry`, however this would increase retained heap memory for 
>> large number of entries.
>> 
>> New tests are added in the ZipFS and ZipFileOutputStream area to verify that 
>> these APIs throw exceptions according to their specifications when faced 
>> with unmappable characters.
>> 
>> Curiously, `ZipFileOutputStream::setComment` is not specified to throw for 
>> an unmappable comment. Long standing unspecified behavior is to throw 
>> IllegalArgumentException. To prevent regressions, a test is added to verify 
>> this. An alternative path here would be to update the specification with a 
>> CSR.
>
> Eirik Bjørsnøs has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   initCause original exception

Hello Eirik, I've updated the JBS issue title to fix a typo as well as change 
it to a bug. Please update the title of the PR to match the JBS issue.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/30319#issuecomment-4097641245

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