Tickets :: [#7609] Unicode support in ZIP

6.0.0-alpha10

5/14/25

Summary	Unicode support in ZIP
Queue	Horde Framework Packages
Queue Version	Git develop
Type	Enhancement
State	Accepted
Priority	1. Low
Owners
Requester	freecityhk (at) gmail (dot) com
Created	10/30/2008 (6040 days ago)
Due
Updated	08/05/2013 (4300 days ago)
Assigned
Resolved
Milestone
Patch	No

08/05/2013 10:34:17 PM	Michael Slusarz	Comment #7 Version ⇒ Git develop	Reply to this comment
It is just implemented by setting the reserved bit 11 in general purpose bit flag This is not 100% true. There is also an additional "comment field" method of storing UTF-8 data, as defined by Info-ZIP. So that would need to be implemented as well. As mentioned in a previous ticket... I would really like to see us get out of the compression library business. I would much rather use an existing library that handles all these details for us. ZipArchive would be perfect... except the pecl module seems to be broken (at least it doesn't work for me on PHP 5.4, either stable or beta version). And requiring built-in zip support to PHP seems to be too invasive/too big of a step back from the present situation.

11/21/2008 03:01:36 AM	caltuslex (at) hotmail (dot) com	Comment #6	Reply to this comment
Did this solution work?

11/02/2008 03:50:40 AM	Chuck Hagenbuch	State ⇒ Accepted Version ⇒ HEAD

11/01/2008 09:56:47 AM	freecityhk (at) gmail (dot) com	Comment #5	Reply to this comment
So, we just need to make sure that in Compress_Zip, we call convertCharset on filenames to make them utf-8 if they aren't already - that sound right? yes

11/01/2008 03:17:58 AM	Chuck Hagenbuch	Comment #4	Reply to this comment
So, we just need to make sure that in Compress_Zip, we call convertCharset on filenames to make them utf-8 if they aren't already - that sound right?

10/31/2008 08:07:46 AM	freecityhk (at) gmail (dot) com	Comment #3	Reply to this comment
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.

10/31/2008 12:13:20 AM	Chuck Hagenbuch	Comment #2 State ⇒ Feedback	Reply to this comment
This looks like a duplicate of ~~#1841~~ to me, except with a solution - can you please look and let me know if this is the same issue?

10/30/2008 10:38:17 AM	freecityhk (at) gmail (dot) com	Comment #1 Priority ⇒ 1. Low Type ⇒ Enhancement Summary ⇒ Unicode support in ZIP Queue ⇒ Horde Framework Packages Milestone ⇒ Patch ⇒ No State ⇒ New	Reply to this comment
Should we set set General purpose bit flag to 0008 in horde/lib/Horde/Compress/zip.php to support Unicode Filename in the "Zip all attachment and download" feature horde/lib/Horde/Compress/zip.php replace $cdrec .= "\x00\x00"; /* General purpose bit flag / to $cdrec .= "\x00\x08"; / General purpose bit flag / and replace $fr .= "\x00\x00"; / General purpose bit flag. / to l $fr .= "\x00\x08"; / General purpose bit flag. */