An alternative zimlib implementation makes sense if it is done in
another programming language than C++.
I can think of scenarios where a zimlib for Java, PHP or Python may be
interesting.
/Manuel
Tommi Mäkitalo schrieb:
On Dienstag, 20. Oktober 2009 13:57:08 [email protected] wrote:
Hi,
I help currently someone wanting to build his own ZIM parser.
I know this is not necessary... but he wants to do it and I find this is
interesting to have someone trying to do that.
I have remarked that on the wiki nothing is written about the compression:
* How do we know if a cluster is compressed or not ?
* What are the possible value (for different compression methods) ?
Regards
Emmanuel
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Hi,
unfortunately there are several areas, which are not specified completely. But
luckily this compression flag is at least partly ;-)
The first byte in a cluster specifies the compression. The value is:
0 default (no compression)
1 none (also no compression, I don't know, why vlado specified this in zeno,
but I take ist over to zim)
2 zip (zlib)
3 bzip2 (currently used in writer)
4 lzma (not implemented in reader or writer due to lack of compression
library)
You can find the flag here: http://openzim.org/ZIM_File_Format#Clusters. The
actual values are not documentated but can be found in the header zim/zim.h as
a enum.
It is really no necessary to implement a parser but it does not hurt. It helps
discussing ideas for improvements. And it helps pushing zim as a standard, if
we encourage people to work with it.
Tommi
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--
Regards
Manuel Schneider
Wikimedia CH - Verein zur Förderung Freien Wissens
Wikimedia CH - Association for the advancement of free knowledge
www.wikimedia.ch
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