Beispiel #1
0
/*
 * call-seq:
 *  dup
 *
 * Duplicate this node set
 */
static VALUE duplicate(VALUE self)
{
  xmlNodeSetPtr node_set;
  Data_Get_Struct(self, xmlNodeSet, node_set);

  xmlNodeSetPtr dupl = xmlXPathNodeSetMerge(NULL, node_set);

  return Nokogiri_wrap_xml_node_set(dupl, rb_iv_get(self, "@document"));
}
Beispiel #2
0
/*
 * call-seq:
 *  dup
 *
 * Duplicate this node set
 */
static VALUE duplicate(VALUE self)
{
  nokogiriNodeSetTuple *tuple;
  xmlNodeSetPtr dupl;

  Data_Get_Struct(self, nokogiriNodeSetTuple, tuple);

  dupl = xmlXPathNodeSetMerge(NULL, tuple->node_set);

  return Nokogiri_wrap_xml_node_set(dupl, rb_iv_get(self, "@document"));
}
static void ruby_funcall(xmlXPathParserContextPtr ctx, int nargs)
{
  VALUE xpath_handler = Qnil;
  VALUE result;
  VALUE *argv;
  VALUE doc;
  VALUE node_set = Qnil;
  xmlNodeSetPtr xml_node_set = NULL;
  xmlXPathObjectPtr obj;
  int i;
  nokogiriNodeSetTuple *node_set_tuple;

  assert(ctx);
  assert(ctx->context);
  assert(ctx->context->userData);
  assert(ctx->context->doc);
  assert(DOC_RUBY_OBJECT_TEST(ctx->context->doc));

  xpath_handler = (VALUE)(ctx->context->userData);

  argv = (VALUE *)calloc((size_t)nargs, sizeof(VALUE));
  for (i = 0 ; i < nargs ; ++i) {
    rb_gc_register_address(&argv[i]);
  }

  doc = DOC_RUBY_OBJECT(ctx->context->doc);

  if (nargs > 0) {
    i = nargs - 1;
    do {
      obj = valuePop(ctx);
      switch(obj->type) {
        case XPATH_STRING:
          argv[i] = NOKOGIRI_STR_NEW2(obj->stringval);
          break;
        case XPATH_BOOLEAN:
          argv[i] = obj->boolval == 1 ? Qtrue : Qfalse;
          break;
        case XPATH_NUMBER:
          argv[i] = rb_float_new(obj->floatval);
          break;
        case XPATH_NODESET:
          argv[i] = Nokogiri_wrap_xml_node_set(obj->nodesetval, doc);
          break;
        default:
          argv[i] = NOKOGIRI_STR_NEW2(xmlXPathCastToString(obj));
      }
      xmlXPathFreeNodeSetList(obj);
    } while(i-- > 0);
  }

  result = rb_funcall2(
      xpath_handler,
      rb_intern((const char *)ctx->context->function),
      nargs,
      argv
  );

  for (i = 0 ; i < nargs ; ++i) {
    rb_gc_unregister_address(&argv[i]);
  }
  free(argv);

  switch(TYPE(result)) {
    case T_FLOAT:
    case T_BIGNUM:
    case T_FIXNUM:
      xmlXPathReturnNumber(ctx, NUM2DBL(result));
      break;
    case T_STRING:
      xmlXPathReturnString(
          ctx,
          (xmlChar *)xmlXPathWrapCString(StringValuePtr(result))
      );
      break;
    case T_TRUE:
      xmlXPathReturnTrue(ctx);
      break;
    case T_FALSE:
      xmlXPathReturnFalse(ctx);
      break;
    case T_NIL:
      break;
    case T_ARRAY:
      {
        VALUE args[2];
	args[0] = doc;
	args[1] = result;
        node_set = rb_class_new_instance(2, args, cNokogiriXmlNodeSet);
        Data_Get_Struct(node_set, nokogiriNodeSetTuple, node_set_tuple);
	xml_node_set = node_set_tuple->node_set;
        xmlXPathReturnNodeSet(ctx, xmlXPathNodeSetMerge(NULL, xml_node_set));
      }
      break;
    case T_DATA:
      if(rb_obj_is_kind_of(result, cNokogiriXmlNodeSet)) {
        Data_Get_Struct(result, nokogiriNodeSetTuple, node_set_tuple);
	xml_node_set = node_set_tuple->node_set;
        /* Copy the node set, otherwise it will get GC'd. */
        xmlXPathReturnNodeSet(ctx, xmlXPathNodeSetMerge(NULL, xml_node_set));
        break;
      }
    default:
      rb_raise(rb_eRuntimeError, "Invalid return type");
  }
}
Beispiel #4
0
/**
 * xsltKeyFunction:
 * @ctxt:  the XPath Parser context
 * @nargs:  the number of arguments
 *
 * Implement the key() XSLT function
 *   node-set key(string, object)
 */
void
xsltKeyFunction(xmlXPathParserContextPtr ctxt, int nargs){
    xmlXPathObjectPtr obj1, obj2;

    if (nargs != 2) {
	xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
		"key() : expects two arguments\n");
	ctxt->error = XPATH_INVALID_ARITY;
	return;
    }

    /*
    * Get the key's value.
    */
    obj2 = valuePop(ctxt);
    xmlXPathStringFunction(ctxt, 1);
    if ((obj2 == NULL) ||
	(ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
	xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
	    "key() : invalid arg expecting a string\n");
	ctxt->error = XPATH_INVALID_TYPE;
	xmlXPathFreeObject(obj2);

	return;
    }
    /*
    * Get the key's name.
    */
    obj1 = valuePop(ctxt);

    if ((obj2->type == XPATH_NODESET) || (obj2->type == XPATH_XSLT_TREE)) {
	int i;
	xmlXPathObjectPtr newobj, ret;

	ret = xmlXPathNewNodeSet(NULL);

	if (obj2->nodesetval != NULL) {
	    for (i = 0; i < obj2->nodesetval->nodeNr; i++) {
		valuePush(ctxt, xmlXPathObjectCopy(obj1));
		valuePush(ctxt,
			  xmlXPathNewNodeSet(obj2->nodesetval->nodeTab[i]));
		xmlXPathStringFunction(ctxt, 1);
		xsltKeyFunction(ctxt, 2);
		newobj = valuePop(ctxt);
		ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
						       newobj->nodesetval);
		xmlXPathFreeObject(newobj);
	    }
	}
	valuePush(ctxt, ret);
    } else {
	xmlNodeSetPtr nodelist = NULL;
	xmlChar *key = NULL, *value;
	const xmlChar *keyURI;
	xsltTransformContextPtr tctxt;
	xmlChar *qname, *prefix;
	xmlXPathContextPtr xpctxt = ctxt->context;
	xmlNodePtr tmpNode = NULL;
	xsltDocumentPtr oldDocInfo;

	tctxt = xsltXPathGetTransformContext(ctxt);

	oldDocInfo = tctxt->document;

	if (xpctxt->node == NULL) {
	    xsltTransformError(tctxt, NULL, tctxt->inst,
		"Internal error in xsltKeyFunction(): "
		"The context node is not set on the XPath context.\n");
	    tctxt->state = XSLT_STATE_STOPPED;
	    goto error;
	}
	/*
	 * Get the associated namespace URI if qualified name
	 */
	qname = obj1->stringval;
	key = xmlSplitQName2(qname, &prefix);
	if (key == NULL) {
	    key = xmlStrdup(obj1->stringval);
	    keyURI = NULL;
	    if (prefix != NULL)
		xmlFree(prefix);
	} else {
	    if (prefix != NULL) {
		keyURI = xmlXPathNsLookup(xpctxt, prefix);
		if (keyURI == NULL) {
		    xsltTransformError(tctxt, NULL, tctxt->inst,
			"key() : prefix %s is not bound\n", prefix);
		    /*
		    * TODO: Shouldn't we stop here?
		    */
		}
		xmlFree(prefix);
	    } else {
		keyURI = NULL;
	    }
	}

	/*
	 * Force conversion of first arg to string
	 */
	valuePush(ctxt, obj2);
	xmlXPathStringFunction(ctxt, 1);
	if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
	    xsltTransformError(tctxt, NULL, tctxt->inst,
		"key() : invalid arg expecting a string\n");
	    ctxt->error = XPATH_INVALID_TYPE;
	    goto error;
	}
	obj2 = valuePop(ctxt);
	value = obj2->stringval;

	/*
	* We need to ensure that ctxt->document is available for
	* xsltGetKey().
	* First find the relevant doc, which is the context node's
	* owner doc; using context->doc is not safe, since
	* the doc could have been acquired via the document() function,
	* or the doc might be a Result Tree Fragment.
	* FUTURE INFO: In XSLT 2.0 the key() function takes an additional
	* argument indicating the doc to use.
	*/
	if (xpctxt->node->type == XML_NAMESPACE_DECL) {
	    /*
	    * REVISIT: This is a libxml hack! Check xpath.c for details.
	    * The XPath module sets the owner element of a ns-node on
	    * the ns->next field.
	    */
	    if ((((xmlNsPtr) xpctxt->node)->next != NULL) &&
		(((xmlNsPtr) xpctxt->node)->next->type == XML_ELEMENT_NODE))
	    {
		tmpNode = (xmlNodePtr) ((xmlNsPtr) xpctxt->node)->next;
	    }
	} else
	    tmpNode = xpctxt->node;

	if ((tmpNode == NULL) || (tmpNode->doc == NULL)) {
	    xsltTransformError(tctxt, NULL, tctxt->inst,
		"Internal error in xsltKeyFunction(): "
		"Couldn't get the doc of the XPath context node.\n");
	    goto error;
	}

	if ((tctxt->document == NULL) ||
	    (tctxt->document->doc != tmpNode->doc))
	{
	    if (tmpNode->doc->name && (tmpNode->doc->name[0] == ' ')) {
		/*
		* This is a Result Tree Fragment.
		*/
		if (tmpNode->doc->_private == NULL) {
		    tmpNode->doc->_private = xsltNewDocument(tctxt, tmpNode->doc);
		    if (tmpNode->doc->_private == NULL)
			goto error;
		}
		tctxt->document = (xsltDocumentPtr) tmpNode->doc->_private;
	    } else {
		/*
		* May be the initial source doc or a doc acquired via the
		* document() function.
		*/
		tctxt->document = xsltFindDocument(tctxt, tmpNode->doc);
	    }
	    if (tctxt->document == NULL) {
		xsltTransformError(tctxt, NULL, tctxt->inst,
		    "Internal error in xsltKeyFunction(): "
		    "Could not get the document info of a context doc.\n");
		tctxt->state = XSLT_STATE_STOPPED;
		goto error;
	    }
	}
	/*
	* Get/compute the key value.
	*/
	nodelist = xsltGetKey(tctxt, key, keyURI, value);

error:
	tctxt->document = oldDocInfo;
	valuePush(ctxt, xmlXPathWrapNodeSet(
	    xmlXPathNodeSetMerge(NULL, nodelist)));
	if (key != NULL)
	    xmlFree(key);
    }

    if (obj1 != NULL)
	xmlXPathFreeObject(obj1);
    if (obj2 != NULL)
	xmlXPathFreeObject(obj2);
}
Beispiel #5
0
/**
 * xsltDocumentFunction:
 * @ctxt:  the XPath Parser context
 * @nargs:  the number of arguments
 *
 * Implement the document() XSLT function
 *   node-set document(object, node-set?)
 */
void
xsltDocumentFunction(xmlXPathParserContextPtr ctxt, int nargs)
{
    xmlXPathObjectPtr obj, obj2 = NULL;
    xmlChar *base = NULL, *URI;


    if ((nargs < 1) || (nargs > 2)) {
        xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
                         "document() : invalid number of args %d\n",
                         nargs);
        ctxt->error = XPATH_INVALID_ARITY;
        return;
    }
    if (ctxt->value == NULL) {
        xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
                         "document() : invalid arg value\n");
        ctxt->error = XPATH_INVALID_TYPE;
        return;
    }

    if (nargs == 2) {
        if (ctxt->value->type != XPATH_NODESET) {
            xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
                             "document() : invalid arg expecting a nodeset\n");
            ctxt->error = XPATH_INVALID_TYPE;
            return;
        }

        obj2 = valuePop(ctxt);
    }

    if (ctxt->value->type == XPATH_NODESET) {
        int i;
        xmlXPathObjectPtr newobj, ret;

        obj = valuePop(ctxt);
        ret = xmlXPathNewNodeSet(NULL);

        if ((obj != NULL) && obj->nodesetval) {
            for (i = 0; i < obj->nodesetval->nodeNr; i++) {
                valuePush(ctxt,
                          xmlXPathNewNodeSet(obj->nodesetval->nodeTab[i]));
                xmlXPathStringFunction(ctxt, 1);
                if (nargs == 2) {
                    valuePush(ctxt, xmlXPathObjectCopy(obj2));
                } else {
                    valuePush(ctxt,
                              xmlXPathNewNodeSet(obj->nodesetval->
                                                 nodeTab[i]));
                }
                xsltDocumentFunction(ctxt, 2);
                newobj = valuePop(ctxt);
                ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
                                                       newobj->nodesetval);
                xmlXPathFreeObject(newobj);
            }
        }

        if (obj != NULL)
            xmlXPathFreeObject(obj);
        if (obj2 != NULL)
            xmlXPathFreeObject(obj2);
        valuePush(ctxt, ret);
        return;
    }
    /*
     * Make sure it's converted to a string
     */
    xmlXPathStringFunction(ctxt, 1);
    if (ctxt->value->type != XPATH_STRING) {
        xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
                         "document() : invalid arg expecting a string\n");
        ctxt->error = XPATH_INVALID_TYPE;
        if (obj2 != NULL)
            xmlXPathFreeObject(obj2);
        return;
    }
    obj = valuePop(ctxt);
    if (obj->stringval == NULL) {
        valuePush(ctxt, xmlXPathNewNodeSet(NULL));
    } else {
        xsltTransformContextPtr tctxt;
        tctxt = xsltXPathGetTransformContext(ctxt);
        if ((obj2 != NULL) && (obj2->nodesetval != NULL) &&
            (obj2->nodesetval->nodeNr > 0) &&
            IS_XSLT_REAL_NODE(obj2->nodesetval->nodeTab[0])) {
            xmlNodePtr target;

            target = obj2->nodesetval->nodeTab[0];
            if ((target->type == XML_ATTRIBUTE_NODE) ||
	        (target->type == XML_PI_NODE)) {
                target = ((xmlAttrPtr) target)->parent;
            }
            base = xmlNodeGetBase(target->doc, target);
        } else {
            if ((tctxt != NULL) && (tctxt->inst != NULL)) {
                base = xmlNodeGetBase(tctxt->inst->doc, tctxt->inst);
            } else if ((tctxt != NULL) && (tctxt->style != NULL) &&
                       (tctxt->style->doc != NULL)) {
                base = xmlNodeGetBase(tctxt->style->doc,
                                      (xmlNodePtr) tctxt->style->doc);
            }
        }
        URI = xmlBuildURI(obj->stringval, base);
        if (base != NULL)
            xmlFree(base);
        if (URI == NULL) {
            if ((tctxt != NULL) && (tctxt->style != NULL) &&
                (tctxt->style->doc != NULL) &&
                (xmlStrEqual(URI, tctxt->style->doc->URL))) {
                /* This selects the stylesheet's doc itself. */
                valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) tctxt->style->doc));
            } else {
                valuePush(ctxt, xmlXPathNewNodeSet(NULL));
            }
        } else {
	    xsltDocumentFunctionLoadDocument( ctxt, URI );
	    xmlFree(URI);
	}
    }
    xmlXPathFreeObject(obj);
    if (obj2 != NULL)
        xmlXPathFreeObject(obj2);
}
Beispiel #6
0
/**
 * xsltKeyFunction:
 * @ctxt:  the XPath Parser context
 * @nargs:  the number of arguments
 *
 * Implement the key() XSLT function
 *   node-set key(string, object)
 */
void
xsltKeyFunction(xmlXPathParserContextPtr ctxt, int nargs){
    xmlNodeSetPtr nodelist;
    xmlXPathObjectPtr obj1, obj2;
    xmlChar *key = NULL, *value;
    const xmlChar *keyURI;
    xsltTransformContextPtr tctxt;

    if (nargs != 2) {
	xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt), NULL, NULL);
        xsltGenericError(xsltGenericErrorContext,
		"key() : expects two arguments\n");
	ctxt->error = XPATH_INVALID_ARITY;
	return;
    }

    obj2 = valuePop(ctxt);
    if ((obj2 == NULL) ||
	(ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
	xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt), NULL, NULL);
	xsltGenericError(xsltGenericErrorContext,
	    "key() : invalid arg expecting a string\n");
	ctxt->error = XPATH_INVALID_TYPE;
	xmlXPathFreeObject(obj2);

	return;
    }
    obj1 = valuePop(ctxt);

    if (obj2->type == XPATH_NODESET) {
	int i;
	xmlXPathObjectPtr newobj, ret;

	ret = xmlXPathNewNodeSet(NULL);

	if (obj2->nodesetval != NULL) {
	    for (i = 0; i < obj2->nodesetval->nodeNr; i++) {
		valuePush(ctxt, xmlXPathObjectCopy(obj1));
		valuePush(ctxt,
			  xmlXPathNewNodeSet(obj2->nodesetval->nodeTab[i]));
		xmlXPathStringFunction(ctxt, 1);
		xsltKeyFunction(ctxt, 2);
		newobj = valuePop(ctxt);
		ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
						       newobj->nodesetval);
		xmlXPathFreeObject(newobj);
	    }
	}
	valuePush(ctxt, ret);
    } else {
	xmlChar *qname, *prefix;

	/*
	 * Get the associated namespace URI if qualified name
	 */
	qname = obj1->stringval;
	key = xmlSplitQName2(qname, &prefix);
	if (key == NULL) {
	    key = xmlStrdup(obj1->stringval);
	    keyURI = NULL;
	    if (prefix != NULL)
		xmlFree(prefix);
	} else {
	    if (prefix != NULL) {
		keyURI = xmlXPathNsLookup(ctxt->context, prefix);
		if (keyURI == NULL) {
		    xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt),
					  NULL, NULL);
		    xsltGenericError(xsltGenericErrorContext,
			"key() : prefix %s is not bound\n", prefix);
		}
		xmlFree(prefix);
	    } else {
		keyURI = NULL;
	    }
	}

	/*
	 * Force conversion of first arg to string
	 */
	valuePush(ctxt, obj2);
	xmlXPathStringFunction(ctxt, 1);
	if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
	    xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt),
				  NULL, NULL);
	    xsltGenericError(xsltGenericErrorContext,
		"key() : invalid arg expecting a string\n");
	    ctxt->error = XPATH_INVALID_TYPE;
	    xmlXPathFreeObject(obj1);

	    return;
	}
	obj2 = valuePop(ctxt);
	value = obj2->stringval;

	tctxt = xsltXPathGetTransformContext(ctxt);

	nodelist = xsltGetKey(tctxt, key, keyURI, value);
	valuePush(ctxt, xmlXPathWrapNodeSet(
		        xmlXPathNodeSetMerge(NULL, nodelist)));
    }


    if (obj1 != NULL)
	xmlXPathFreeObject(obj1);
    if (obj2 != NULL)
	xmlXPathFreeObject(obj2);
    if (key != NULL)
	xmlFree(key);
}
Beispiel #7
0
/**
 * xsltDocumentFunction:
 * @ctxt:  the XPath Parser context
 * @nargs:  the number of arguments
 *
 * Implement the document() XSLT function
 *   node-set document(object, node-set?)
 */
void
xsltDocumentFunction(xmlXPathParserContextPtr ctxt, int nargs){
    xsltDocumentPtr doc;
    xmlXPathObjectPtr obj, obj2 = NULL;
    xmlChar *base = NULL, *URI;


    if ((nargs < 1) || (nargs > 2)) {
	xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt), NULL, NULL);
        xsltGenericError(xsltGenericErrorContext,
		"document() : invalid number of args %d\n", nargs);
	ctxt->error = XPATH_INVALID_ARITY;
	return;
    }
    if (ctxt->value == NULL) {
	xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt), NULL, NULL);
	xsltGenericError(xsltGenericErrorContext,
	    "document() : invalid arg value\n");
	ctxt->error = XPATH_INVALID_TYPE;
	return;
    }

    if (nargs == 2) {
	if (ctxt->value->type != XPATH_NODESET) {
	    xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt),
		                  NULL, NULL);
	    xsltGenericError(xsltGenericErrorContext,
		"document() : invalid arg expecting a nodeset\n");
	    ctxt->error = XPATH_INVALID_TYPE;
	    return;
	}

	obj2 = valuePop(ctxt);
    }

    if (ctxt->value->type == XPATH_NODESET) {
	int i;
	xmlXPathObjectPtr newobj, ret;

	obj = valuePop(ctxt);
	ret = xmlXPathNewNodeSet(NULL);

	if (obj->nodesetval) {
	    for (i = 0; i < obj->nodesetval->nodeNr; i++) {
		valuePush(ctxt,
			  xmlXPathNewNodeSet(obj->nodesetval->nodeTab[i]));
		xmlXPathStringFunction(ctxt, 1);
		if (nargs == 2) {
		    valuePush(ctxt, xmlXPathObjectCopy(obj2));
		} else {
		    valuePush(ctxt,
			      xmlXPathNewNodeSet(obj->nodesetval->nodeTab[i]));
		}
		xsltDocumentFunction(ctxt, 2);
		newobj = valuePop(ctxt);
		ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
						       newobj->nodesetval);
		xmlXPathFreeObject(newobj);
	    }
	}

	xmlXPathFreeObject(obj);
	if (obj2 != NULL)
	    xmlXPathFreeObject(obj2);
	valuePush(ctxt, ret);
	return;
    }
    /*
     * Make sure it's converted to a string
     */
    xmlXPathStringFunction(ctxt, 1);
    if (ctxt->value->type != XPATH_STRING) {
	xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt), NULL, NULL);
	xsltGenericError(xsltGenericErrorContext,
	    "document() : invalid arg expecting a string\n");
	ctxt->error = XPATH_INVALID_TYPE;
	if (obj2 != NULL)
	    xmlXPathFreeObject(obj2);
	return;
    }
    obj = valuePop(ctxt);
    if (obj->stringval == NULL) {
	valuePush(ctxt, xmlXPathNewNodeSet(NULL));
    } else {
	if ((obj2 != NULL) && (obj2->nodesetval != NULL) &&
	    (obj2->nodesetval->nodeNr > 0) &&
	    IS_XSLT_REAL_NODE(obj2->nodesetval->nodeTab[0])) {
	    xmlNodePtr target;

	    target = obj2->nodesetval->nodeTab[0];
	    if (target->type == XML_ATTRIBUTE_NODE) {
		target = ((xmlAttrPtr) target)->parent;
	    }
	    base = xmlNodeGetBase(target->doc, target);
	} else {
	    xsltTransformContextPtr tctxt;
	    
	    tctxt = xsltXPathGetTransformContext(ctxt);
	    if ((tctxt != NULL) && (tctxt->inst != NULL)) {
		base = xmlNodeGetBase(tctxt->inst->doc, tctxt->inst);
	    } else if ((tctxt != NULL) && (tctxt->style != NULL) &&
		       (tctxt->style->doc != NULL)) {
		base = xmlNodeGetBase(tctxt->style->doc, 
			              (xmlNodePtr) tctxt->style->doc);
	    }
	}
	URI = xmlBuildURI(obj->stringval, base);
	if (base != NULL)
	    xmlFree(base);
        if (URI == NULL) {
	    valuePush(ctxt, xmlXPathNewNodeSet(NULL));
	} else {
	    xsltTransformContextPtr tctxt;

	    tctxt = xsltXPathGetTransformContext(ctxt);
	    if (tctxt == NULL) {
		xsltPrintErrorContext(xsltXPathGetTransformContext(ctxt),
			              NULL, NULL);
		xsltGenericError(xsltGenericErrorContext,
			"document() : internal error tctxt == NULL\n");
		valuePush(ctxt, xmlXPathNewNodeSet(NULL));
	    } else {
                if (xmlStrEqual(tctxt->style->doc->URL, URI)) {
                    valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr)tctxt->style->doc));
                }
                else {
		    doc = xsltLoadDocument(tctxt, URI);
		    if (doc == NULL)
		        valuePush(ctxt, xmlXPathNewNodeSet(NULL));
		    else {
		        /* TODO: use XPointer of HTML location for fragment ID */
		        /* pbm #xxx can lead to location sets, not nodesets :-) */
		        valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) doc->doc));
		    }
                }
	    }
	    xmlFree(URI);
	}
    }
    xmlXPathFreeObject(obj);
    if (obj2 != NULL)
	xmlXPathFreeObject(obj2);
}