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Re: Small bug in DeXml [message #20293 is a reply to message #20286]

Sat, 07 March 2009 01:07

phirox
Messages: 49
Registered: December 2007

Member

Quote:

The trouble is, that even if we recode LF as 
, you still aren't guaranteed you'll parse back exactly what you wrote into the XML previously, unless you use the xml:space="preserve" attribute. I believe that under normal circumstances you should use this attribute to ensure that the delimiting whitespaces are honored when parsing XML text elements.

In this case you are actually guaranteed that the LF character gets through since it is escaped. Also the xml:space="preserve" attribute only works as the name implies; for whitespace. All end of line characters should even be normalized to #xA according to the specifications, so there is no way to ever preserve any combination. See here.

I can't think of any reason you wouldn't want to escape it. Not doing so actually breaks the current usability and is outside of the specifications.

Quote:

Although the XML standard specifically doesn't forbid it, I personally find the concept of storing arbitrary binary data sequences as &#-escaped plain text into XML at the very least questionable; after all, we're trying not to invent our own XML but to use the one that's supposed to be a widespread standard, i.e. readable by non-U++ software without difficulties and possibly without semantic differences as well.

Even though this is quite unrelated to the bug; there is no other way to officially do binary encoding in XML then the &#-escapes. Doing something like a BASE64 function is actually "inventing your own XML" which btw is what XML is all about; customization.

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[Message index]

		Small bug in DeXml By: phirox on Fri, 06 March 2009 20:00
		Re: Small bug in DeXml By: rylek on Fri, 06 March 2009 20:56
		Re: Small bug in DeXml By: phirox on Sat, 07 March 2009 01:07
		Re: Small bug in DeXml By: rylek on Sat, 07 March 2009 12:30
		Re: Small bug in DeXml By: mirek on Sat, 07 March 2009 13:24
		Re: Small bug in DeXml By: mirek on Sat, 07 March 2009 13:28
		Re: Small bug in DeXml By: rylek on Sat, 07 March 2009 14:26
		Re: Small bug in DeXml By: phirox on Sat, 07 March 2009 14:38
		Re: Small bug in DeXml By: mirek on Sat, 07 March 2009 20:15

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