[Cif2-encoding] How we wrap this up
SIMON WESTRIP
simonwestrip at btinternet.com
Wed Sep 29 08:17:01 BST 2010
John, I do not think a specification that suggests that a CIF can be invalidated
simply by being moved to
another environment is helpful to anyone.
Cheers
Simon
________________________________
From: "Bollinger, John C" <John.Bollinger at STJUDE.ORG>
To: Group for discussing encoding and content validation schemes for CIF2
<cif2-encoding at iucr.org>
Sent: Tuesday, 28 September, 2010 21:56:24
Subject: Re: [Cif2-encoding] How we wrap this up
On Tuesday, September 28, 2010 2:19 PM, SIMON WESTRIP wrote:
> Perhaps it might further your cause to
>present your proposal more completely, and define "text" and "text file"
>sufficient to program to.
>
>Certainly, although I think I understand your use of "local", I would like to
>see it presented as part of
>a full specification of CIF encoding so that I might determine more clearly how
>the concept will be received
>by current CIF users/developers.
Fair enough. Here are the relevant excerpts of a revised full draft of the CIF2
Changes document. I had intended to hold off on this, pending possible adoption
of the underlying concept, but as long as you asked:
------
TERMINOLOGY
Reference to character(s) means abstract characters assigned code points by
Unicode. [...]
Reference to CIF text means a sequence of characters collectively complying with
the CIF syntax described in this specification. CIF text is the unparsed
logical content of a CIF, independent of any mechanism for representing that
content concretely.
[...]
CHANGE X - REFINEMENT to CIF1
Persistent Form.
[...]
(3) CIF/local
CIF text is serialized according to this form by encoding it via the default
text conventions for its environment, including not only character encoding
scheme, but also the newline representation and possibly other details. The
specific meaning of "default text conventions" is system-dependent. They are
the conventions employed by the system's standard text editors when creating new
files, the conventions the system's I/O libraries assume for 'formatted' or
'text' files when not explicitly instructed differently, etc..
------
I am not emotionally tied to that exact wording nor even to all of the details,
but I would be reasonably satisfied with them if adopted as-is.
Regards,
John
--
John C. Bollinger, Ph.D.
Department of Structural Biology
St. Jude Children's Research Hospital
Email Disclaimer: www.stjude.org/emaildisclaimer
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