RE: [xml] xmlDocDumpFormatMemory problem?

[Gang Wang <WangGang computermotion com>]

Thanks for the message, Igor. Yes, I was expecting to have the output as you
showed. 

Now I understand the reason. However, if the parties using the their XML
document agree upon the indentation, there will be no confusion on how to
interpret the data. Is there any handy tools for pre/post-processing XML
document, so that "insignificant" spaces could be eliminated? 

Thanks. 

Gang Wang 
> -----Original Message-----
> From: Igor Zlatkovic [mailto:igor stud fh-frankfurt de]
> Sent: Tuesday, June 25, 2002 3:47 AM
> To: Gang Wang; xml gnome org
> Subject: Re: [xml] xmlDocDumpFormatMemory problem?
> 
> 
> Hi there,
> 
> > xmlKeepBlanksDefault(0);
> > xmlDocDumpFormatMemory(xmlDoc, &buf, &size, 1);
> >
> > The data both of them send out looks as following:
> > <?xml version="1.0"?>
> > <test><a>data</a>hello world</test>
> 
> I assume that you have expected something like:
> 
>   <?xml version="1.0"?>
>   <test>
>     <a>
>       data
>     </a>
>     hello world
>   </test>
> 
> right? All novices who use XML for trivial purposes expect 
> such behaviour.
> Forget it. I hope it is clear that the document I displayed 
> here is not the
> same as the one you displayed. My document's text nodes have 
> additional
> characters, namely spaces and newlines. These are not the 
> part of the data,
> but have been introduced by the indenting engine. 
> Unfortunately, exactly
> that information is missing in the resulting document--one 
> cannot tell which
> of these characters are data and which are just a formatting. When one
> parses my document back, one gets a different DOM than was 
> the original.
> 
> There is no way to make a difference between the whitespace and the
> ignorable whitespace in text nodes. All you can do is guess, 
> and whenever
> the software guesses, it guesses wrong. For that reason, no 
> formatting is
> performed on nodes which contain text children.
> 
> > I have tested version 2.4.21 on RedHat linux and also the 
> windows versions
> > 2.4.21 and 2.4.22 posted by Igor Zlatkovic on his web site. 
> They behaved
> the
> > same.
> 
> That is good, they should behave the same.
> 
> Ciao
> Igor
> 
> 
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