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Re: WritePString weirdness...

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: WritePString weirdness...
From: Joe Strout <joe at inspiringapps dot com>
Date: Mon, 31 Mar 2008 08:19:46 -0600
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Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <226027DE-9E67-4701-90AD-12E8F3383CF6 at rbclass dot com> <A652AB13-FCF7-4D95-B6B1-5EC6EC3E84DE at inspiringapps dot com> <3E14F3DA-1A0F-47A7-A23A-5561C8EFDFC3 at rbclass dot com> <A0720DC7-6E68-4825-B1E7-06FA772B07E7 at inspiringapps dot com> <A08DAFF0-4131-4C31-BE88-965126CC576F at rbclass dot com> <09004169-C758-401C-BF6E-6FB615336097 at rbclass dot com> <1BD9DBC6-83AA-42FF-912E-010229927261 at sentman dot com> <6D8444CF-8F0F-4A8A-8117-B4C6E4EEE06C at rbclass dot com> <2061F18F-62B0-4CDB-BCAC-6EE65F613122 at inspiringapps dot com> <2F88C8F7-913B-48BB-A96F-D9932B096431 at mac dot com>
On Mar 31, 2008, at 6:38 AM, Arnaud Nicolet wrote:

> I'm thinking of a feature request for RB but I don't know if it's
> technically possible:
>
> On each write of PStrings, RB automatically inserts the encoding of
> the string (e.g as an integer), in a way that does not disturb how
> PStrings work (e.g, after the PString).
> On read of a PString, RB automatically reads the PString and then the
> encoding, which it uses to convert the read PString.

That's not possible, in the sense that such a function would no  
longer be WritePString/ReadPString.  The point of those functions is  
to interface with files commonly used under Mac OS 9, where "PString"  
has a very specific definition (length byte followed by up to 255  
bytes of data in a WorldScript encoding).  If you write anything  
else, then you're no longer adhering to the definition, thus  
rendering the function pretty pointless.

> As far as I know, we can't do this programatically: we can't know the
> "name" or "value" of the encoding of <this particular> string and we
> can't either convert back something to an encoding.

Sure you can: string.Encoding gives you exactly that.

Best,
- Joe

--
Joe Strout
Inspiring Applications, Inc.
http://www.InspiringApps.com



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