Using the Form parameter/-gnatW switch
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From: Georg Bauhaus on 25 Jun 2010 03:03 On 6/25/10 4:08 AM, deadlyhead wrote: > I've been messing around a bit with files of various encodings, and > just recently I've become aware of the Form parameter to Open and > Create and the -gnatW switch for handling character encoding. (Sometimes I think that Ada designers should, as part of their "engineering awareness", work in a "web shop" for a few months. The experience of working with real encoded data might make them look again at character encoding, but less, uhm, condescendingly. Character encoding (or string encoding) is a representation issue and should be treated at this level. ISO 10646 deals with UTF. A character is ubiquitously a fundamental piece of data. In my dream, then, there is enough motivation to make character encoding a solid part of the language proper and thus have Ada be the first language that makes character representation well defined and easy to use!) > I'm okay with giving up on this method and using the XML/Ada Unicode > libraries for the text translation. It'd be nice if I didn't have to, > though. Does GNAT 2010 support the Ada 2012 strings encoding package? http://www.ada-auth.org/cgi-bin/cvsweb.cgi/ai05s/ai05-0137-1.txt?rev=1.5&raw=Y Another alternative might be EAstrings (encoding aware strings). It has an IO child package. It's part of AdaCL at http://adacl.sourceforge.net/
From: deadlyhead on 26 Jun 2010 02:59
On Jun 25, 12:03 am, Georg Bauhaus <rm- host.bauh...(a)maps.futureapps.de> wrote: > On 6/25/10 4:08 AM, deadlyhead wrote: > > > I've been messing around a bit with files of various encodings, and > > just recently I've become aware of the Form parameter to Open and > > Create and the -gnatW switch for handling character encoding. > > (Sometimes I think that Ada designers should, as part of their > "engineering awareness", work in a "web shop" for a few > months. The experience of working with real encoded data > might make them look again at character encoding, but less, > uhm, condescendingly. Character encoding (or string > encoding) is a representation issue and should be treated at > this level. ISO 10646 deals with UTF. A character is > ubiquitously a fundamental piece of data. > > In my dream, then, there is enough motivation to make > character encoding a solid part of the language proper > and thus have Ada be the first language that makes character > representation well defined and easy to use!) > > > I'm okay with giving up on this method and using the XML/Ada Unicode > > libraries for the text translation. It'd be nice if I didn't have to, > > though. > > Does GNAT 2010 support the Ada 2012 strings encoding package? > > http://www.ada-auth.org/cgi-bin/cvsweb.cgi/ai05s/ai05-0137-1.txt?rev=.... > > Another alternative might be EAstrings (encoding aware strings). > It has an IO child package. It's part of AdaCL athttp://adacl.sourceforge..net/ I've searched around Adacore's site, googling ath manually, but haven't found any references to their supporting Strings.Encodings in GNAT 2010. Still, it's very encouraging that ARG has proposed making encodings a standard part of the language. I don't know of any other languages that make character encoding part of the standard, though I'm pretty ignorant when it comes to the vast majority of languages out there. Also, I keep forgetting about AdaCL. I've been meaning to try it out for a long time. Perhaps this is just the right place to start. -- deadlyhead |