From lemming at henning-thielemann.de  Fri Jul 24 21:52:35 2015
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Fri, 24 Jul 2015 23:52:35 +0200 (CEST)
Subject: non-ASCII filepaths in a C function
Message-ID: <alpine.DEB.2.02.1507242344260.7190@sputnik>


In my 'soxlib' package I have written a binding to

sox_format_t * sox_open_read(
     char               const * path,
     sox_signalinfo_t   const * signal,
     sox_encodinginfo_t const * encoding,
     char               const * filetype);


I construct the C filepath "path" from a Haskell FilePath using 
Foreign.C.String.withCString. This works for ASCII and non-ASCII 
characters in Linux. However, non-ASCII characters let sox_open_read fail 
on Windows. What is the correct way to convert FilePath to "char *"?

From malcolm.wallace at me.com  Sat Jul 25 07:40:59 2015
From: malcolm.wallace at me.com (Malcolm Wallace)
Date: Sat, 25 Jul 2015 08:40:59 +0100
Subject: non-ASCII filepaths in a C function
In-Reply-To: <alpine.DEB.2.02.1507242344260.7190@sputnik>
References: <alpine.DEB.2.02.1507242344260.7190@sputnik>
Message-ID: <F98CB23A-941B-419C-A8AC-10D643C1C33F@me.com>

I believe the native representation for FilePaths on Windows should be UTF16 strings.

Regards,
    Malcolm

> On 24 Jul 2015, at 22:52, Henning Thielemann <lemming at henning-thielemann.de> wrote:
> 
> 
> In my 'soxlib' package I have written a binding to
> 
> sox_format_t * sox_open_read(
>    char               const * path,
>    sox_signalinfo_t   const * signal,
>    sox_encodinginfo_t const * encoding,
>    char               const * filetype);
> 
> 
> I construct the C filepath "path" from a Haskell FilePath using Foreign.C.String.withCString. This works for ASCII and non-ASCII characters in Linux. However, non-ASCII characters let sox_open_read fail on Windows. What is the correct way to convert FilePath to "char *"?
> _______________________________________________
> Libraries mailing list
> Libraries at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

From lemming at henning-thielemann.de  Sat Jul 25 08:05:35 2015
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Sat, 25 Jul 2015 10:05:35 +0200 (CEST)
Subject: non-ASCII filepaths in a C function
In-Reply-To: <F98CB23A-941B-419C-A8AC-10D643C1C33F@me.com>
References: <alpine.DEB.2.02.1507242344260.7190@sputnik>
 <F98CB23A-941B-419C-A8AC-10D643C1C33F@me.com>
Message-ID: <alpine.DEB.2.02.1507251004220.7220@sputnik>


On Sat, 25 Jul 2015, Malcolm Wallace wrote:

> I believe the native representation for FilePaths on Windows should be UTF16 strings.

Btw. I don't think that soxlib expects UTF16 filepath strings on Windows 
because it works for purely ASCII filepaths.