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From "Stefan Bodewig (Commented) (JIRA)" <>
Subject [jira] [Commented] (COMPRESS-176) ArchiveInputStream#getNextEntry(): Problems with WinZip directories with Umlauts
Date Sat, 25 Feb 2012 13:41:48 GMT


Stefan Bodewig commented on COMPRESS-176:

AFAIK what we have written down based on findings by Wolfgang Glas in
still stands, WinZIP is the only one using Unicode extra fields, all other implementations
have switched to the language encoding flag.  The only exceptions are Windows compressed folders
- which doesn't understand either - and InfoZIP based tools if they are compiled to use the
extra fields.

A question to the original reporter (I'm German so I know the name's a fake 8-): since you
also have an installation of 7zip, what does 7zip think of your WinZIP created archive?
> ArchiveInputStream#getNextEntry(): Problems with WinZip directories with Umlauts
> --------------------------------------------------------------------------------
>                 Key: COMPRESS-176
>                 URL:
>             Project: Commons Compress
>          Issue Type: Bug
>          Components: Archivers
>    Affects Versions: 1.3
>         Environment: Windows 7
>            Reporter: Wurstbrot mit Senf
>         Attachments:,,
> 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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