Re: UTF conversion via Lua (renaming attachments to .scr_) - Procházka Lukáš Ing.

From: "Procházka Lukáš Ing. - Pontex s. r. o." <LPr@pontex.cz>
To: "Hans Hagen" <pragma@wxs.nl>
Cc: ConTeXt <ntg-context@ntg.nl>
Subject: Re: UTF conversion via Lua (renaming attachments to .scr_)
Date: Thu, 16 Feb 2012 14:15:20 +0100	[thread overview]
Message-ID: <op.v9rwfuaytpjj8f@lpr> (raw)
In-Reply-To: <4F3CF1A9.6030904@wxs.nl>

[-- Attachment #1: Type: text/plain, Size: 1785 bytes --]

On Thu, 16 Feb 2012 13:08:09 +0100, Hans Hagen <pragma@wxs.nl> wrote:

> no, although it's no big deal to provide that (of course there is then
> the matter of utf being more complete than the target)
>
>> ----
>> src_enc = "utf8"
>> tgt_enc = "cp1250"
>>
>> str = regimes.translate(str, src_enc, tgt_enc)
>> ----
>
> is there a reason not to stick to utf?
>
> Hans

Well - I'm working with a .cld document (with UTF encoding). There are some functions which typeset texts. And there is also a part which creates a .scr file.

.Scr files are sequences of AutoCAD commands - their contents are passed directly to AutoCAD command prompt.

When AutoCAD is creating a text entity, it reads the input stream (in our case: the .scr file) BYTE-PER-BYTE. When bytes represent a text to be drawn, unknown bytes (= bytes that don't have any graphical representation in AutoCAD font file ("shape" file in AutoCAD's terminology)) are shown as "?".

Of course, valid representation of language-specific-characters (like "čřž..." in Czech) requires an appropriate .shx (= "shape compiled") file.

Anyway, when AutoCAD is to write "č", it requires just ONE BYTE to be passed to it; so 2-byte UTF representation gives bad result (= "??").

So back to the origin, when I call the .cld's function that writes a command to the .scr file, I need to convert a UTF string back to CP 1250.

Would it be possible to provide this?

NB: There are two examples of .scr files; CP1250.scr works well in AutoCAD, the latter draws "????ST" instead of "ČÁST".

Kind reagrds,

Lukas

-- 
Ing. Lukáš Procházka [mailto:LPr@pontex.cz]
Pontex s. r. o.      [mailto:pontex@pontex.cz] [http://www.pontex.cz]
Bezová 1658
147 14 Praha 4

Tel: +420 244 062 238
Fax: +420 244 461 038

[-- Attachment #2: UTF.scr_ --]
[-- Type: application/octet-stream, Size: 60 bytes --]

_.TEXT _ST ROMAND _J _R _NON 14.48,0.0925 0.007 0.0 ČÁST

[-- Attachment #3: CP1250.scr_ --]
[-- Type: application/octet-stream, Size: 58 bytes --]

_.TEXT _ST ROMAND _J _R _NON 14.48,0.0925 0.007 0.0 ÈÁST

[-- Attachment #4: Type: text/plain, Size: 485 bytes --]

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