Re: [Haskell] I18N, external strings
A comment on gettext,
On Nov 15, 2006, at 17:35, Stefan Aeschbacher wrote:
Hi
there is a project for i18n on sourceforge. It contains for example
bindings to the gettext library which could be helpful. I'm not sure
though how up to date this project is (project page looks very empty).
The code is still available in the sourceforge cvs repository:
http://haskell-i18n.cvs.sourceforge.net/haskell-i18n/
I think gettext would be a very nice thing to use in Haskell. At the
moment, it is slightly inefficient to lookup a string in order to
substitute it for a translation. For instance, say l_ is your
translations function, saying
(l_ "Translate this")
is compiled into a C string constant, that GHC then turns lazily into a
list of characters, which l_ then turns into an array in C land to pass
to the gettext function, which, in turn, returns a new C string array
that has to be turned into a Haskell string again. So I'm glad Lennart
proposed to turn String into a class which would then make it possible
to pass a pointer to a contant C string to gettext.
Axel.
Stefan
2006/11/15, Johannes Waldmann <[EMAIL PROTECTED] >:
(I.e. I want output in several languages,
with the language configurable at runtime,
and I want to add languages without recompilation.)
a typical source text (for my application) is here
MailScanner warning: numerical links are often malicious:
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Graph/Circle/Plain.hs?
rev=1.2
it contains (German) text strings all over the place.
In Java/Eclipse, I would "Source -> Externalize Strings"
and this replaces each string by something like
Messages.getString("Foobar.0") where Messages is a global variable
(constructed at program start from reading a properties file)
In Haskell, I see at least two problems:
a) reading the file is in IO
b) there are no "global variables". implicit parameters perhaps?
c) when I'm trying to be clever, I use "deriving Show/Read" or
similar.
then i18n should rename the constructors/accessors? I rather not.
MailScanner warning: numerical links are often malicious:
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Grammatik/Type.hs.drift?
rev=1.6
Best regards,
--
-- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 --
http://www.imn.htwk-leipzig.de/~waldmann/ ---
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Re: [Haskell] I18N, external strings
Hithere is a project for i18n on sourceforge. It contains for example bindings to the gettext library which could be helpful. I'm not sure though how up to date this project is (project page looks very empty).The code is still available in the sourceforge cvs repository:
http://haskell-i18n.cvs.sourceforge.net/haskell-i18n/Another possibility is to load the lookup tables in the IO monad and then use a Reader Monad to make your lookup table available in your code.
regardsStefan2006/11/15, Johannes Waldmann <[EMAIL PROTECTED]
>:
What methods and tools are there for i18n of Haskell programs?(I.e. I want output in several languages,with the language configurable at runtime,and I want to add languages without recompilation.)
a typical source text (for my application) is here
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Graph/Circle/Plain.hs?rev=1.2
it contains (German) text strings all over the place.
In Java/Eclipse, I would "Source -> Externalize Strings"and this replaces each string by something likeMessages.getString("Foobar.0") where Messages is a global variable(constructed at program start from reading a properties file)
In Haskell, I see at least two problems:a) reading the file is in IOb) there are no "global variables". implicit parameters perhaps?c) when I'm trying to be clever, I use "deriving Show/Read" or similar.
then i18n should rename the constructors/accessors? I rather not.
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Grammatik/Type.hs.drift?rev=1.6
Best regards, Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 --
http://www.imn.htwk-leipzig.de/~waldmann/ ---___
Haskell mailing listHaskell@haskell.org
http://www.haskell.org/mailman/listinfo/haskell
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Haskell@haskell.org
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[Haskell] I18N, external strings
What methods and tools are there for i18n of Haskell programs?
(I.e. I want output in several languages,
with the language configurable at runtime,
and I want to add languages without recompilation.)
a typical source text (for my application) is here
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Graph/Circle/Plain.hs?rev=1.2
it contains (German) text strings all over the place.
In Java/Eclipse, I would "Source -> Externalize Strings"
and this replaces each string by something like
Messages.getString("Foobar.0") where Messages is a global variable
(constructed at program start from reading a properties file)
In Haskell, I see at least two problems:
a) reading the file is in IO
b) there are no "global variables". implicit parameters perhaps?
c) when I'm trying to be clever, I use "deriving Show/Read" or similar.
then i18n should rename the constructors/accessors? I rather not.
http://141.57.11.163/cgi-bin/cvsweb/tool/src/Grammatik/Type.hs.drift?rev=1.6
Best regards,
--
-- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 --
http://www.imn.htwk-leipzig.de/~waldmann/ ---
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