RE: [xml] Problems with the character & and saving/loading XML files

["Daniel Gehriger" <bulk linkcad com>]

Philip,

The following two characters must be escaped: '<' and '&'. 
You could also use a CDATA section, like this:

<mydata><![CDATA[   ANY DATA   ]]></mydata>

, but then you mustn't use "]]>" inside the CDATA section, and there's
no way to escape this sequence. You better don't use CDATA for this
reason.

Here's a link with more information:

http://www.w3schools.com/xml/xml_cdata.asp

- Daniel

> -----Original Message-----
> From: xml-admin gnome org [mailto:xml-admin gnome org] On 
> Behalf Of Daniel Veillard
> Sent: Friday, 19 April, 2002 13:57
> To: Philip Van Hoof
> Cc: xml gnome org
> Subject: Re: [xml] Problems with the character & and 
> saving/loading XML files
>
>
> On Fri, Apr 19, 2002 at 01:31:07PM +0200, Philip Van Hoof wrote:
> > Hi there..
> >
> > I want to store a struct as an XML file and after that 
> reload the XML
> > file into such a struct. The data of the struct can contain any
> > character. Including characters like &, <, > , +, " and '. If I save
>
>   Some of them MUST be escaped when present in XML
>
> > my struct and there is for example a character "&" in the 
> data; then 
> > loading the XML file fails.
>
>   Rule #1 to get help:
>     - provide meaningful reports, what is the error ????
>   Rule #2:
>     - follow the instructions
>       http://xmlsoft.org/bugs.html
>       "Do not send code, I won't debug it" is in bold, maybe I need
>       to make it red too.
>
> > How can I make it this way that I can save "any" data. So the
>
>   You cannot. You MUST escape characters which are not 
> acceptable XML is a text format, live with it.
>
> > <data></data> tag can contain any character.. do I need to 
> > search/replace XML characters? Or is there a function in 
> the lib for 
> > this?
>
>   when present in content & and < are automatically escaped 
> by libxml when saving, so I don't understand, and without the 
> error messages the only possibility is to make guesses and I 
> don't have the time for guess play.
>
> > ps. Don't be hard on me :) I am pretty new to libxml. Read 
> : This is 
> > the first time that I use the library.
>
>   Well this doesn't mean that you should not do the minimal 
> reasearch on your side or follow the instructions. The fact 
> that XML requires escaping of & and < in content is the #1 
> point of any beginner XML FAQ. And you report is far too 
> incomplete to be able to answer (and no sorry I don't have 
> the time to debug your code).
>
> Daniel
>
> -- 
> Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
> veillard redhat com  | libxml GNOME XML XSLT toolkit  
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