[fpc-pascal] Re: fpc-pascal Digest, Vol 34, Issue 13

[gmjimen at burdjia.com]

Thanks for the answers.

I think I'll duplicate the functions, one for ASCII (ANSISTRING) coding and
the other for UTF-8 (WIDESTRING). I think this is the best way.

But I've look for the description for UTF8Encode, UTF8Decode, UTF8ToAnsi and
UTF8ToUnicode in the documentation and I can't find it. What does they do?

Guillermo Martínez Jiménez

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       leer aquí --> http://dibujantemomar.deviantart.com/
          y aquí --> http://dibujantemomar.spaces.live.com/



> ------------------------------
>
> Message: 6
> Date: Mon, 4 Jun 2007 14:11:22 +0200 (CEST)
> From: marcov at stack.nl (Marco van de Voort)
> Subject: Re: [fpc-pascal] Using AnsiString/WideString with C Library
> To: FPC-Pascal users discussions <fpc-pascal at lists.freepascal.org>
> Message-ID: <20070604121122.3B2BE22899 at snail.stack.nl>
> Content-Type: text/plain; charset="US-ASCII"
>
>> This way I can use Pascal strings with C functions.
>>
>> I've read the documentation and I find that I can use WIDESTRING in a
>> similar
>> way, but I'm not sure which character codification WIDESTRING uses
>
> UCS2 which is a subset (more like a draft for) of UTF16.  Maybe Microsoft
> has fixed this to be fully UTF16 compliant in XP+ though.
>
>> The C library uses 'standard C strings' (that is 'char *string;') an
>> there's a function to define the character codification to be used by the
>> library. It's possible to use ASCII, UTF-8, UTF-16 and UTF-32.
>
>> Can WIDESTRING use all UNICODE codifications and ASCII strings?
>
> If there are differences, they revolve around the differences between UCS2
> and UTF16. (surrogate pairs mostly, maybe endianess support)
>
>> If it can't, is there a way to use UNICODE strings?
>
> There is no such thing. There are multiple unicode encodings (UTF-*, UCS-*
> etc)
>
>
> ------------------------------
>
> Message: 7
> Date: Mon, 4 Jun 2007 14:15:13 +0200 (CEST)
> From: Dani?l Mantione <daniel.mantione at freepascal.org>
> Subject: Re: [fpc-pascal] Using AnsiString/WideString with C Library
> To: FPC-Pascal users discussions <fpc-pascal at lists.freepascal.org>
> Message-ID: <Pine.LNX.4.61.0706041409001.23087 at idefix.wisa.be>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
>
> Op Mon, 4 Jun 2007, schreef gmjimen at burdjia.com:
>
>> I've read the documentation and I find that I can use WIDESTRING in a sim=
> ilar
>> way, but I'm not sure which character codification WIDESTRING uses. The C
>> library uses 'standard C strings' (that is 'char *string;') an there's a
>> function to define the character codification to be used by the library. =
> It's
>> possible to use ASCII, UTF-8, UTF-16 and UTF-32.
>> =
>
>> Can WIDESTRING use all UNICODE codifications and ASCII strings?
>
> An ansistring uses 8 bit characters, while a widestring uses =
>
> 16-bit characters. A widestring is normally UCS-2 or UTF-16 encoded.
>
> Assignments to and from ansistrings convert to and from the system code =
>
> page, i.e. if the system uses an ISO-8859-1 encoding, converting =
>
> ansistrings from/to widestring converts to/from ISO-8859-1.
> Further, there is utfencode and utf8decode, which convert an utf-8 =
>
> encoded ansistring to/from a widestring.
>
> Dani=EBl
>
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