OK, but in this case it really depends on your input XML format and what you
consider "useless".
If you only have "locally" useless whitespaces like here:
<txt> Some text </txt>
and you want to get <txt>Some text</txt> you can still use the function below
and "strip" every text node with a C function (I don't think that a standard C
function exists for that).
But, if you have mixed content like:
<p> Some text<b><i> in bold italics </i></b>and continuing</p>
it is tricky to define "useless" whitespaces in a recursive descent because the
decision is not local (here, clearly, the whitespaces in the <i> elements
should not be removed).
So, depending on your definition of "useless", the difficulty of the answer can
range from very simple to very complicated.
Best regards,
Georges-André SILBER
LUXIA
Le 16 févr. 2012 à 09:32, spam.spam.spam.s...@free.fr a écrit :
> I think this function removes blank nodes.
> That's not exactly what I want.
> I want to strip useless whitespaces from text nodes.
> These nodes aren't considered as blank nodes because they contains also
> visible characters.
>
> ----- Mail original -----
> De: "Georges-André SILBER" <gasil...@luxia.fr>
> À: "spam spam spam spam" <spam.spam.spam.s...@free.fr>
> Cc: xml@gnome.org
> Envoyé: Jeudi 16 Février 2012 09:14:17
> Objet: Re: [xml] Remove whitespaces from text nodes
>
> 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.s...@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" <l...@holoweb.net>
>> À: "spam spam spam spam" <spam.spam.spam.s...@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.s...@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/
>>
>> _______________________________________________
>> xml mailing list, project page http://xmlsoft.org/
>> xml@gnome.org
>> http://mail.gnome.org/mailman/listinfo/xml
>
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