[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: XML and Using It With Whitespace
On Tue, 6 Jan 1998, Tim Bray wrote: > Date: Tue, 06 Jan 1998 18:56:52 -0800 > From: Tim Bray <tbray@t...> > > Hmm, I'm failing to get some aspect of your problem. Maybe I > bypassed a message in which you explained it. It is clear that > *any* conformant parser must give you all the whitespace in the > message. The difficulty was not with insignificant whitespace, it was with unwanted whitespace. For example, (old ground, I know, I'm sorry) if a long line of text gets broken by changing a space to a lineend, then message authentication will fail. XML has done an admirable job with whitespace in element content, but we were looking at a different problem. We wanted to try (where possible) to rescue transport mechanisms, such as email, that occasionally damage their content. > Probably I'm missing something... what is the missing piece from > your point of view? -T. We were trying to save the world :-). Notice I'm using the past tense? In our conference call this morning, we finally decided we'd had enough. Transport mechanisms that damage their content are broken. Period. Fix the transport. As a result, we have taken a different approach, one that draws rather heavily on watching the parser work going on here. It essentially is: - parse the document, using the DTD. - generate a clean XML document (in UTF-16) from the parsed version - run the authentication check on that I'll post the definitive section of our spec in my next message. Because the authentication is carried *inside* the XML document, the whole document doesn't actually get authenticated. We authenticate any one element (except, I suppose, the document element) which includes an authentication of all content. You can include multiple authentications, which may nest. There are other complications, but I'd need to put in the whole spec. Considering that XML essentially rescued our group from an encoding stalemate, I'll post the press release (which I understand is coming out on Monday.) --------------------------------------------------------------------------- Chris Smith <smith@i...> xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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