Re: [xml] Remove whitespaces from text nodes

[Georges-André SILBER <gasilber luxia fr>]

Hi,

I wrote a small function for this purpose some time ago.
I didn't test it with the last versions of libxml2 nor did I ensure that this code if correct but it gives 
you the idea of a method that you can use to remove blank nodes.

The usage is for instance:

doc = xmlReadFile (xmlfile, NULL, 0);
if (doc == NULL)
   {
        /* Deal with error... */
      return 1;
    }
glbRemoveBlankNodes (xmlDocGetRootElement(doc));

Hope this helps,

Best regards,

Georges-André SILBER
LUXIA

int
glbRemoveBlankNodes (xmlNodePtr n)
{
  xmlNodePtr cur;
  xmlNodePtr next;

  if (n == NULL)
    return 0;

  cur = n->children;
  while (cur)
    {
      next = cur->next;      
      if (xmlIsBlankNode (cur))
        {
          xmlUnlinkNode (cur);
          xmlFreeNode (cur);
        }
      else
        glbRemoveBlankNodes (cur);
      cur = next;
    }

  return 0;
}


Le 16 févr. 2012 à 08:57, spam spam spam spam free fr a écrit :

> Yes you are right.
> But I am not sure my function will do a good job.
> I know 2 whitespaces : " ", "\t", ... But I am not sure that I know all of them.
> My function will probably forgot to strip some whitespaces...
> This is the reason why I would like to use an already defined function.
>
> Is there a function which do this job?
>
> ----- Mail original -----
> De: "Liam R E Quin" <liam holoweb net>
> À: "spam spam spam spam" <spam spam spam spam free fr>
> Cc: xml gnome org
> Envoyé: Jeudi 16 Février 2012 08:40:31
> Objet: Re: [xml] Remove whitespaces from text nodes
>
> On Thu, 2012-02-16 at 08:28 +0100, spam spam spam spam free fr wrote:
> > [...].
> > Anyway, there seems to have no other solution with libxml2 only.
>
> The spaces are part of the text of the document, so it's not likely that
> a conformant XML parser will strip them for you.
>
> You could of course remove the spaces in C after parsing, just as if you
> decided to remove every occurrence of an upper-case "B" from the input.
>
> That's just standard C string processing.
>
> -- 
> Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
> Pictures from old books: http://fromoldbooks.org/
>
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