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From: Rainer Weikusat <rweikusat@mobileactivedefense.com>
Newsgroups: comp.os.linux.development.apps
Subject: Re: Failure to extract information using mini-XML v2.8
Date: Thu, 24 Apr 2014 19:04:41 +0100
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Lew Pitcher <lew.pitcher@digitalfreehold.ca> writes:
> While using miniXML v2.8 (http://www.msweet.org/projects.php?Z3) to read and
> process an XML document in a small C program, I came across a problem that
> I cannot surmount.

[...]

> For my demo, I have a dead simple XML document:
>   <?xml version="1.0" encoding="utf-8"?><document>Hello, World</document>

[...]

>   #include <stdio.h>
>   #include <stdlib.h>
>
>   #include <mxml.h>
>
>   int main(void)
>   {
>     int rc = EXIT_FAILURE;
>
>     mxml_node_t *xml, *doc;
>     const char *text;
>
>     xml = mxmlLoadFile(NULL,stdin,MXML_TEXT_CALLBACK);
>     doc = mxmlFindElement(xml,xml,"document",NULL,NULL,MXML_DESCEND_FIRST);
>     text = mxmlGetText(doc,NULL);
>
>     if (text)
>     {
>       printf("Success: \"%s\"\n",text);
>       rc = EXIT_SUCCESS;
>     }
>     else puts("Fail");
>
>     return rc;
>   }

As determined by examining the mini-XML (2.8) code and testing,
mxmlLoadFile (or, more correctly, the corresponding backend routine)
will only create 'interior value nodes' when the first argument to
mxmlLoadFile is not null.