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https://issues.apache.org/jira/browse/COMPRESS-176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217122#comment-13217122
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Stefan Bodewig commented on COMPRESS-176:
-----------------------------------------
Whether we need forward slashes in Unicode extra fields can only be answered by
somebody using WinZIP. The best would be creating a test archive with a
directory that contains a character in its name that is not part of CP437 - and
to be safe not part of the platform's default encoding either.
> ArchiveInputStream#getNextEntry(): Problems with WinZip directories with
> Umlauts
> --------------------------------------------------------------------------------
>
> Key: COMPRESS-176
> URL: https://issues.apache.org/jira/browse/COMPRESS-176
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.3
> Environment: Windows 7
> Reporter: Wurstbrot mit Senf
> Assignee: Stefan Bodewig
> Fix For: 1.4
>
> Attachments: test-7zip.zip, test-windows.zip, test-winzip.zip,
> testzap-winzip.zip
>
>
> There is a problem when handling a WinZip-created zip with Umlauts in
> directories.
> I'm accessing a zip file created with WinZip containing a directory with an
> umlaut ("รค") with ArchiveInputStream. When creating the zip file the
> unicode-flag of winzip had been active.
> The following problem occurs when accessing the entries of the zip:
> the ArchiveEntry for a directory containing an umlaut is not marked as a
> directory and the file names for the directory and all files contained in
> that directory contain backslashes instead of slashes (i.e. completely
> different to all other files in directories with no umlaut in their path).
> There is no difference when letting the ArchiveStreamFactory decide which
> ArchiveInputStream to create or when using the ZipArchiveInputStream
> constructor with the correct encoding (I've tried different encodings CP437,
> CP850, ISO-8859-15, but still the problem persisted).
> This problem does not occur when using the very same zip file but compressed
> by 7zip or the built-in Windows 7 zip functionality.
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