[mapserver-dev] Farsi right-to-left labels

[Alan Boudreault]

Hi,

I moved the thread in the mapserver-dev because i think it's the right 
place to be. :)

I apply manually the patch from 
http://trac.osgeo.org/mapserver/ticket/956 to mapserver 5. It's working 
properly, but doesnt have the joining.
This patch use the GNU FriBidi library. The lastest stable version don't 
support arabic joining, but it seem to be in development. I don't know 
how is the progress for this support (i just subcribe the fribidi 
mailing list to have more information) but would you not rather wait for 
Lib Fribidi to support arabic joining rather than using yet another 
library ?

I will give you more information later about the support of arabic joining.

Alan

Stephen Woodbridge wrote:
> Yes, I have used arabjoin.pl for the perl version
>
> http://user.cs.tu-berlin.de/~czyborra/arabjoin/arabjoin
>
> and I just started looking for a C langauge version and there a few 
> variations based on:
>
> http://www.koders.com/c/fid0CDEEAE48A82518AB622E67323B84AB525772AED.aspx?s=mp3 
>
> http://www.koders.com/c/fidD92D7571C80226F5F767189298750ACC8461B090.aspx?s=mp3 
>
> http://www.koders.com/c/fid6998723CE404855329383741EACE2197511ACDB6.aspx?s=mp3 
>
>
> This is a variation on the above but has a more complete and useful 
> example, and it will also handle Hebrew, Arabic, and maybe Farsi
>
> http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2F130.89.160.166%2Frockbox%2Farabjoin.c&ei=rlPYR6-8DZjEgQT43tymBQ&usg=AFQjCNFUtcluvex5eicUU4b70H_ok5vC7Q&sig2=m8TZs2uMbL8Te8f2Za0fVQ 
>
> http://www.google.com/search?num=100&hl=en&lr=&as_qdr=all&q=arabjoin.c++stdbool.h 
>
>
> -Steve W.
>
> Yewondwossen Assefa wrote:
>>
>>
>> Stephen Woodbridge wrote:
>>> Hi Daniel,
>>>
>>> I looked at the patch briefly.
>>> It doesn't seem to be doing character joining for works in Arabic.
>>>
>>> I'm thinking that if we had the algorithm to do the joining then we 
>>> could add that and maybe a Tag or metadata item that enabled the 
>>> joining  if needed. The joining algorithm, might be smart enough to 
>>> only join Arabic letters and leave the rest alone.
>>>
>>> If you are interested, I think I can get my hands on a perl script 
>>> that does the joining.
>>>
>>
>> Steve,
>>
>>  Isn't is what the function shape_arabic (from the PostArabic) module 
>> does?  If that is the case, the source code in C and an original perl 
>> source code are available on the web.
>>
>> Best Regards,
>>
>>
>>> -Steve W
>>>
>>> Daniel Morissette wrote:
>>>> Copying what I wrote earlier this morning on the ka-map list (sorry 
>>>> for those on both lists):
>>>>
>>>> FYI there is an open MapServer ticket about this:
>>>>   http://trac.osgeo.org/mapserver/ticket/956
>>>>
>>>> The ticket even includes a patch that you may want to try. I'll try 
>>>> to address this one for MapServer 5.2.
>>>>
>>>> Daniel
>>>>
>>>>
>>>> R Isfahani wrote:
>>>>> Hi,
>>>>>
>>>>> I'm trying to render some Farsi (Persian) labels on my map. As you 
>>>>> may know, Farsi words are written from right to left, just like 
>>>>> Hebrew.
>>>>> I've changed the label's encoding to 'Windows-1256' in my mapfile 
>>>>> and I'm using TrueType fonts. Farsi letters have appeared. But the 
>>>>> problem is that letters are in revers order and letters are not 
>>>>> joining properly.
>>>>> Of course reversing the letters' order in database will cause the 
>>>>> right order of them when rendering the map. But I wanna know if 
>>>>> there's any other way to show farsi labels in right order with no 
>>>>> joining problems.
>>>>>  
>>>>> [Actually, I'm using Ka-Map on the top of Mapserver to render my 
>>>>> maps on the web. Ka-Mappers told me that my problem is a kind of 
>>>>> Mapserver problems]
>>>>>
>>>>> Any new ideas are welcomed.
>>>>> Thanx.
>>>>>
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>>>
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>>>
>>>
>>
>>
>
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-- 
Alan Boudreault
Mapgears
http://www.mapgears.com