[Tickets #7609] Re: Unicode support in ZIP

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/7609
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  Ticket             | 7609
  Updated By         | freecityhk at gmail.com
  Summary            | Unicode support in ZIP
  Queue              | Horde Framework Packages
  Version            | FRAMEWORK_3
  Type               | Enhancement
  State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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freecityhk at gmail.com (2008-10-31 04:07) wrote:

It seems to be the same request

Maybe I explain it further
Zip format add Unicode filename support in version 6.3.0
(which works under WinZip 11.2+, WinRAR 3.8+, 7-Zip 4.58+)
http://en.wikipedia.org/wiki/ZIP_(file_format)#6.3

It is just implemented by setting the reserved bit 11 in general  
purpose bit flag
http://www.pkware.com/documents/casestudies/APPNOTE.TXT
Then the filename and comment fields must be encoded using UTF-8.

Since Horde using UTF-8 by default, then everything works and just  
setting this flag

ps. Zip version 6.3.2 implements an extra field for the storage of the  
Unicode filename which I believe not useful in this case, and lead to  
a more complicated implementation.