RE: CDATA Section [binary data in...]
-----Original Message----- From: Ken Gentle [mailto:j.kenneth.gentle@a...] Sent: Wednesday, October 27, 1999 12:04 To: xml-dev@i... Subject: Re: CDATA Section [binary data in...] >>At 11:33 AM 10/27/99 -0600, you wrote: >>Remember the XML 1.0 definition: CDATA sections are "used to escape blocks >>of text containing characters which would otherwise be recognized as >>markup". Nothing about this implies including XML-illegal characters. >> >>Re Tim Bray's "CDATA Sections and Binary Data" note: >> http://www.xml.com/axml/notes/CDprob.html >>I've never read this to state that you can put _raw_ binary data in a CDATA >>section. The phrase "When you look at CDATA, you might get the impression >>that you could maybe jam your binary data in a CDATA section. You'd be >>right, but..." may be a little misleading, but do remember that these are >>just explanatory notes that can never be taken to contradict the XML 1.0 >>spec itself! >> >>Yes, base64 is a good method of cramming binary data into a CDATA section, >>just be certain that a "]]" can't appear in the encoded data. > >Can't happen in base64 -- neither "]" nor ">" are legal characters. > >This is precisely how our application is embedding "binary" data in XML >documents: Base64 transfer encoding in a CDATA section. > As Tim says in his annotation, if you use Base64 then you don't need the CDATA section as _none_ of the XML reserved chars appear in the Base64 character set (A-Za-z0-9/+). > > > Ken > >> >>Regards, >> Nik O, Teton Data Systems, Jackson, Wyo. >> Regards, Simon Gordon Systems Engineer, Systems Integration, x5472 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/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe 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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