CDATA Section [binary data in...]

[Dan Vint]

I've seen reference to base64 many times now, where can I find a spec for this?

..dan

At 10:24 AM 10/29/99 -0600, Gordon, Simon wrote:
>-----Original Message-----
>From: Ken Gentle [mailto:j.kenneth.gentle at acm.org]
>Sent: Wednesday, October 27, 1999 12:04
>To: xml-dev at ic.ac.uk
>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
>
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