xml_createtext: a shortcut for plain text

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I represent character data (plain old text) as an element with no name. The first (nameless) attribute contains the text. Instead of using xml_create to do this, then using xml_set to set the attribute, I'm defining a special create function for plain text chunks.

And for easy compatibility with expat, there's a version which takes a pointer and length instead of assuming null termination.
  
XML * xml_createtext (const char * value)
{
   XML * ret;

   ret = (XML *) malloc (sizeof (struct _element));
   ret->name = NULL;
   ret->children = NULL;
   ret->parent = NULL;
   ret->attrs = (ATTR *) malloc (sizeof (struct _attr));
   ret->attrs->name = NULL;
   ret->attrs->next = NULL;
   ret->attrs->value = (char *) malloc (strlen (value) + 1);
   strcpy (ret->attrs->value, value);

   return (ret);
}
XML * xml_createtextlen (const char * value, int len)
{
   XML * ret;

   ret = (XML *) malloc (sizeof (struct _element));
   ret->name = NULL;
   ret->children = NULL;
   ret->attrs = (ATTR *) malloc (sizeof (struct _attr));
   ret->attrs->name = NULL;
   ret->attrs->next = NULL;
   ret->attrs->value = (char *) malloc (len + 1);
   strncpy (ret->attrs->value, value, len);
   ret->attrs->value[len] = '\0';

   return (ret);
}
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