[haiku] Re: Proposals for the LocaleKit
- From: "Travis D. Reed" <tdreed@xxxxxxxxx>
- To: haiku@xxxxxxxxxxxxx
- Date: Sun, 7 Feb 2010 15:40:23 -0600
Alright! Finally I tracked down the problem thanks to the cool double-s in
David A.'s name. C++ understands the two chars that make up this one
character as negative. PHP considers them positive...Clearly something to do
with the size of char...now I just need figure out how to manipulate this
and I'm in business! :)
C++ // -61 -97 = SS
PHP // 195 159 = SS
--
Travis D. Reed
On Sun, Feb 7, 2010 at 3:04 PM, Travis D. Reed <tdreed@xxxxxxxxx> wrote:
> I love the idea of the StringBuilder.
>
> I'm all too familiar with the code you mentioned, Ryan. :) Yesterday, I
> stripped said code out of the LocaleKit to make a little C++ app that
> calculates (correctly) the code. It works for the moment (though calling it
> in PHP sometimes breaks things because I've not properly escaped one single
> string in the Mail App). I still would like to get a pure PHP solution.
>
> Still working.
>
> --
> Travis D. Reed
>
>
>
> On Sun, Feb 7, 2010 at 1:50 PM, Ryan Leavengood <leavengood@xxxxxxxxx>wrote:
>
>> On Sun, Feb 7, 2010 at 2:35 PM, Travis D. Reed <tdreed@xxxxxxxxx> wrote:
>> > This is the problem. (Ironically, I used to fight against this with PHP,
>> now
>> > it does it by itself.) I'm trying to peal off just 8 bits at a time from
>> the
>> > string, but the way I'm doing it, it counts ellipsis as a char...*sigh*
>> > Still working on it.
>>
>> By the way, I was looking at the problem of generating the catkeys
>> signature and the algorithm is pretty simple. I was trying to code it
>> up in Ruby but the main problem there is that the Haiku C++ code for
>> calculating the fingerprint counts on 32-bit integer overflow
>> arithmetic, whereas Ruby has the Bignum class which automatically
>> handles big numeric calculations, and this makes it harder to
>> reproduce what the C++ code does. The main point of all this though is
>> that you should be able to reproduce this algorithm in PHP, assuming
>> you can treat the UTF-8 strings just as a stream of bytes and do
>> 32-bit unsigned calculations.
>>
>> If you want to look the fingerprint code is in this file (in
>> CatKey::HashFun and BHashMapCatalog::ComputeFingerprint):
>>
>>
>> http://dev.haiku-os.org/browser/haiku/trunk/src/kits/locale/HashMapCatalog.cpp
>>
>> --
>> Regards,
>> Ryan
>>
>>
>
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