[libxml++] Re: Formatting problem

[Christophe de VIENNE <cdevienne netcourrier com>]

Bastian_Pfennigschmidt/CODESCO/DE codesco com a écrit :

> Hello Christophe,

Hi Bastian,

<snip>

> Why the parser doesn't remove the formatting linebreaks and spaces, if 
> I parse it again?
> If I call write_to_xxx I don't want to get a formatted output, even if 
> the input was formatted.
> Is there any way to get a unformatted output if the input was formatted?

Removing formatting linebreaks and spaces at parsing time imply a 
decision on wether or not a whitespace is significant (See 
http://www.xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault for 
more information about it).

However if you are able to decide if a whitespace is significant or not, 
then you can walk your dom tree and remove them. This shouldn't be hard 
to implement : you just have to remove all content nodes that are white 
space (see bool ContentNode::is_white_space 
<http://libxmlplusplus.sourceforge.net/reference/html/classxmlpp_1_1ContentNode.html#a4> 
() const).

There is another possibility, which is to change the behavior of 
libxml++ regarding whitespaces by changing KeepBlanks::Default to false. 
But this solution will be heavy to maintain for you.
Eventually we can think about a little modification in the next API to 
allow a dynamic change of this setting, but we'll have to convince 
Murray :-).

> Thanks for helping


You're welcome,

Christophe