Character set conversion

Character set conversion

[Adaddict]

Greetings,
I'm looking for an Ada package that could provide me functions to convert
strings from one to another character set, for example from Windows to
MSDOS or to Unicode. Does that even exist? I've been looking everywhere
but haven't found anything.
Any help would be appreciated.
Kind regards.

Re: Character set conversion

[Adrien Plisson]

Adaddict wrote:
> I'm looking for an Ada package that could provide me functions to convert
> strings from one to another character set, for example from Windows to
> MSDOS or to Unicode. Does that even exist? I've been looking everywhere
> but haven't found anything.

every decent XML processor should implement some character set 
conversion routines. look at the sources of XML/Ada for example, they 
may suit your needs. eventually, grab some ideas from there and roll 
your own.

-- 
rien

Re: Character set conversion

[tmoran]

> strings from one to another character set,
Ada.Strings.Fixed.Translate

Re: Character set conversion

[Adrien Plisson]

tmoran@acm.org wrote:
> Ada.Strings.Fixed.Translate

according to ARM95 A.4.3 §70:
"Returns the string S whose length is Source’Length and such that S(I) 
is the character to which Mapping maps the corresponding element of 
Source, for I in 1..Source’Length."

what happens if one character (but not all characters), represented as 
a single byte value in your source character set maps to a multibyte 
character (is it called surrogate ?) in your destination character set ?

(sorry, i'm not flaming, i really don't know how to handle this case 
using the standard)

-- 
rien

Re: Character set conversion

[Dmitry A. Kazakov]

On Tue, 02 Aug 2005 03:57:42 -0400, Adaddict wrote:

> I'm looking for an Ada package that could provide me functions to convert
> strings from one to another character set, for example from Windows to
> MSDOS or to Unicode. Does that even exist? I've been looking everywhere
> but haven't found anything.

It is not clear what you actually need.

Windows Unicode = Wide_Character in Ada. So to convert Latin-1 (=Ada
String) to UCS-2 (=Ada Wide_String) you need just To_Wide_String (from
Ada.Characters.Handling.) [ If UTF-8 encoding is what you are looking for,
see http://www.dmitry-kazakov.de/ada/strings_edit.htm ]

As for MS-DOS character set, what do you mean by that, graphical
characters? I'm not sure if they are present in Unicode. Anyway, as others
have noted, Translate might be useful for you.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de

Re: Character set conversion

[John B. Matthews]

In article 
<deb1f04734da62ea193e591ae9da7ce1@localhost.talkaboutprogramming.com>,
 "Adaddict" <adaddict@hotmail.com> wrote:

> Greetings,
> I'm looking for an Ada package that could provide me functions to convert
> strings from one to another character set, for example from Windows to
> MSDOS or to Unicode. Does that even exist? I've been looking everywhere
> but haven't found anything.
> Any help would be appreciated.
> Kind regards.

Pascal Pignard has worked on this for Mac OS X mappings:

<http://perso.wanadoo.fr/blady/creations.html#ada-text-io>

An English readme is included in the tar file:

<http://perso.wanadoo.fr/blady/telechargements/text-io/text-io.tgz>

If you roll your own, mappings are here:

<http://www.unicode.org/Public/MAPPINGS/VENDORS/>

-- 
John
jmatthews at wright dot edu
www dot wright dot edu/~john.matthews/

Re: Character set conversion

[Jeffrey Carter]

Adaddict wrote:
>
> I'm looking for an Ada package that could provide me functions to convert
> strings from one to another character set, for example from Windows to
> MSDOS or to Unicode. Does that even exist? I've been looking everywhere
> but haven't found anything.

I have some functions to convert accented characters between ISO 
(Windows) and DOS representations, if that's anything like what you're 
looking for.

-- 
Jeff Carter
"If you don't get the President of the United States on that
phone, ... you're going to have to answer to the Coca-Cola
Company."
Dr. Strangelove
32

Re: Character set conversion

[Adaddict]

First of all, thank you everyone for your fast replies.
Those functions to convert accented characters fit exactly for my current
needs.
If you could provide me those libraries or how to get them I would really
appreciate it.

Again, Thank you.

Regards