Re: [xml] Get text content of an element which surrounds another element

[Bogdan Cristea <cristeab gmail com>]

On 10/20/2013 06:53 PM, Nikolay Sivov wrote:
> On 10/20/2013 19:13, Bogdan Cristea wrote:
> > First, I am puzzled by the way I can obtain the text contained by h1 
> > element. I am using the node from a previous xmlTextReaderRead() 
> > call. If I try to obtain the current node in XML_READER_TYPE_TEXT 
> > case the node pointer is NULL.
> Well, that's not surprising. 'h1' in your example contains 3 children 
> - text, element, text - in that order. So when you request 
> node->children you get first child which is a text node, its content 
> is in 'content' field. I don't see a problem here.
>
> > Second, I don't know how to obtain the text after <img> element which 
> > still belongs to <h1> element. s there a way to do so ?
> It looks wrong to use a node pointer returned from previous reader 
> iteration. As I understand it could be reused, and previous node is 
> freed when you're done with it. So in your example you store previous 
> element pointer which is 'img' and later try to use it to get some 
> text (which can't be outside of 'img' scope by the way)? Are you sure 
> xmlTextReaderCurrentNode() doesn't return anything for text node? 

Hi

Indeed, I get <h1> element text when I look for the content its children 
(<img> is between the text); However, I still need to wait for node type 
XML_READER_TYPE_TEXT in order to obtain the text. Currently first I 
detect a XML_READER_TYPE_ELEMENT, which is <h1>, after this I have 
XML_READER_TYPE_TEXT when I get the text before and after <img> element, 
then I get another XML_READER_TYPE_ELEMENT which is <img> and its 
attributes. Inside XML_READER_TYPE_TEXT a call to 
xmlTextReaderCurrentNode() gives me a NULL pointer, so I find a little 
strange the way libxml2 API works, althow not completely forbidden.

regards
Bogdan