-/* $Id: router_flexml.cpp,v 1.1 2005-10-26 14:12:00 marc Exp $
+/* $Id: router_flexml.cpp,v 1.13 2006-01-11 11:51:50 adam Exp $
Copyright (c) 2005, Index Data.
%LICENSE%
*/
-
+#include "config.hpp"
+#include "xmlutil.hpp"
#include "router_flexml.hpp"
+#include "factory_filter.hpp"
+#include "factory_static.hpp"
+
+#include <iostream>
+#include <map>
+#include <list>
+
+#include <boost/shared_ptr.hpp>
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+
+
+namespace yp2 {
+ class RouterFleXML::Route {
+ friend class RouterFleXML::Rep;
+ friend class RouterFleXML::Pos;
+ friend class RouterFleXML;
+ std::list<boost::shared_ptr<const yp2::filter::Base> > m_list;
+ };
+ class RouterFleXML::Rep {
+ friend class RouterFleXML;
+ friend class RouterFleXML::Pos;
+ Rep();
+
+ void base(xmlDocPtr doc, yp2::FactoryFilter &factory);
+
+ typedef std::map<std::string,
+ boost::shared_ptr<const yp2::filter::Base > >
+ IdFilterMap ;
+
+ IdFilterMap m_id_filter_map;
+
+ std::map<std::string,RouterFleXML::Route> m_routes;
+
+ std::string m_start_route;
+
+ void parse_xml_config_dom(xmlDocPtr doc);
+
+ bool check_element_yp2(const xmlNode *ptr,
+ const std::string &name);
+
+ const xmlNode* jump_to(const xmlNode* node, int xml_node_type);
+
+ const xmlNode* jump_to_next(const xmlNode* node, int xml_node_type);
+
+ const xmlNode* jump_to_children(const xmlNode* node, int xml_node_type);
+ void parse_xml_filters(xmlDocPtr doc, const xmlNode *node);
+ void parse_xml_routes(xmlDocPtr doc, const xmlNode *node);
+
+ bool m_xinclude;
+ private:
+ FactoryFilter *m_factory; // TODO shared_ptr
+ };
+
+ class RouterFleXML::Pos : public RoutePos {
+ public:
+ virtual const filter::Base *move(const char *route);
+ virtual RoutePos *clone();
+ virtual ~Pos();
+ yp2::RouterFleXML::Rep *m_p;
+
+ std::map<std::string,
+ RouterFleXML::Route>::iterator m_route_it;
+ std::list<boost::shared_ptr <const yp2::filter::Base> >::iterator m_filter_it;
+ };
+}
+
+const xmlNode* yp2::RouterFleXML::Rep::jump_to_children(const xmlNode* node,
+ int xml_node_type)
+{
+ node = node->children;
+ for (; node && node->type != xml_node_type; node = node->next)
+ ;
+ return node;
+}
+
+const xmlNode* yp2::RouterFleXML::Rep::jump_to_next(const xmlNode* node,
+ int xml_node_type)
+{
+ node = node->next;
+ for (; node && node->type != xml_node_type; node = node->next)
+ ;
+ return node;
+}
+
+const xmlNode* yp2::RouterFleXML::Rep::jump_to(const xmlNode* node,
+ int xml_node_type)
+{
+ for (; node && node->type != xml_node_type; node = node->next)
+ ;
+ return node;
+}
+
+bool yp2::RouterFleXML::Rep::check_element_yp2(const xmlNode *ptr,
+ const std::string &name)
+{
+ if (!yp2::xml::is_element_yp2(ptr, name))
+ throw yp2::XMLError("Expected element name " + name);
+ return true;
+}
+
+
+void yp2::RouterFleXML::Rep::parse_xml_filters(xmlDocPtr doc,
+ const xmlNode *node)
+{
+ unsigned int filter_nr = 0;
+ while(node && check_element_yp2(node, "filter"))
+ {
+ filter_nr++;
+
+ const struct _xmlAttr *attr;
+ std::string id_value;
+ std::string type_value;
+ for (attr = node->properties; attr; attr = attr->next)
+ {
+ std::string name = std::string((const char *) attr->name);
+ std::string value;
+
+ if (attr->children && attr->children->type == XML_TEXT_NODE)
+ value = std::string((const char *)attr->children->content);
+
+ if (name == "id")
+ id_value = value;
+ else if (name == "type")
+ type_value = value;
+ else
+ throw yp2::XMLError("Only attribute id or type allowed"
+ " in filter element. Got " + name);
+ }
+
+ yp2::filter::Base* filter_base = m_factory->create(type_value);
+
+ filter_base->configure(node);
+
+ if (m_id_filter_map.find(id_value) != m_id_filter_map.end())
+ throw yp2::XMLError("Filter " + id_value + " already defined");
+
+ m_id_filter_map[id_value] =
+ boost::shared_ptr<yp2::filter::Base>(filter_base);
+
+ node = jump_to_next(node, XML_ELEMENT_NODE);
+ }
+}
+
+void yp2::RouterFleXML::Rep::parse_xml_routes(xmlDocPtr doc,
+ const xmlNode *node)
+{
+ check_element_yp2(node, "route");
+
+ unsigned int route_nr = 0;
+ while(yp2::xml::is_element_yp2(node, "route"))
+ {
+ route_nr++;
+
+ const struct _xmlAttr *attr;
+ std::string id_value;
+ for (attr = node->properties; attr; attr = attr->next)
+ {
+ std::string name = std::string((const char *) attr->name);
+ std::string value;
+
+ if (attr->children && attr->children->type == XML_TEXT_NODE)
+ value = std::string((const char *)attr->children->content);
+
+ if (name == "id")
+ id_value = value;
+ else
+ throw yp2::XMLError("Only attribute 'id' allowed for"
+ " element 'route'."
+ " Got " + name);
+ }
+
+ Route route;
+
+ // process <filter> nodes in third level
+ const xmlNode* node3 = jump_to_children(node, XML_ELEMENT_NODE);
+
+ unsigned int filter3_nr = 0;
+ while(node3 && check_element_yp2(node3, "filter"))
+ {
+ filter3_nr++;
+
+ const struct _xmlAttr *attr;
+ std::string refid_value;
+ std::string type_value;
+ for (attr = node3->properties; attr; attr = attr->next)
+ {
+ std::string name = std::string((const char *) attr->name);
+ std::string value;
+
+ if (attr->children && attr->children->type == XML_TEXT_NODE)
+ value = std::string((const char *)attr->children->content);
+
+ if (name == "refid")
+ refid_value = value;
+ else if (name == "type")
+ type_value = value;
+ else
+ throw yp2::XMLError("Only attribute 'refid' or 'type'"
+ " allowed for element 'filter'."
+ " Got " + name);
+ }
+ if (refid_value.length())
+ {
+ std::map<std::string,
+ boost::shared_ptr<const yp2::filter::Base > >::iterator it;
+ it = m_id_filter_map.find(refid_value);
+ if (it == m_id_filter_map.end())
+ throw yp2::XMLError("Unknown filter refid "
+ + refid_value);
+ else
+ route.m_list.push_back(it->second);
+ }
+ else if (type_value.length())
+ {
+ yp2::filter::Base* filter_base = m_factory->create(type_value);
+
+ filter_base->configure(node3);
+
+ route.m_list.push_back(
+ boost::shared_ptr<yp2::filter::Base>(filter_base));
+ }
+ node3 = jump_to_next(node3, XML_ELEMENT_NODE);
+
+ }
+ std::map<std::string,RouterFleXML::Route>::iterator it;
+ it = m_routes.find(id_value);
+ if (it != m_routes.end())
+ throw yp2::XMLError("Route id='" + id_value
+ + "' already exist");
+ else
+ m_routes[id_value] = route;
+ node = jump_to_next(node, XML_ELEMENT_NODE);
+ }
+}
+
+void yp2::RouterFleXML::Rep::parse_xml_config_dom(xmlDocPtr doc)
+{
+ if (!doc)
+ throw yp2::XMLError("Empty XML Document");
+
+ const xmlNode* root = xmlDocGetRootElement(doc);
+
+ check_element_yp2(root, "yp2");
+
+ // process <start> node which is expected first element node
+ const xmlNode* node = jump_to_children(root, XML_ELEMENT_NODE);
+ if (check_element_yp2(node, "start"))
+ {
+ const struct _xmlAttr *attr;
+ std::string id_value;
+ for (attr = node->properties; attr; attr = attr->next)
+ {
+ std::string name = std::string((const char *) attr->name);
+ std::string value;
+
+ if (attr->children && attr->children->type == XML_TEXT_NODE)
+ value = std::string((const char *)attr->children->content);
+
+ if (name == "route")
+ m_start_route = value;
+ else
+ throw yp2::XMLError("Only attribute start allowed"
+ " in element 'start'. Got " + name);
+ }
+ node = jump_to_next(node, XML_ELEMENT_NODE);
+ }
+ // process <filters> node which is expected second element node
+ check_element_yp2(node, "filters");
+
+ parse_xml_filters(doc, jump_to_children(node, XML_ELEMENT_NODE));
+
+ // process <routes> node which is expected third element node
+ node = jump_to_next(node, XML_ELEMENT_NODE);
+ check_element_yp2(node, "routes");
+
+ parse_xml_routes(doc, jump_to_children(node, XML_ELEMENT_NODE));
+
+ node = jump_to_next(node, XML_ELEMENT_NODE);
+ if (node)
+ {
+ throw yp2::XMLError("Unexpected element "
+ + std::string((const char *)node->name));
+ }
+}
+
+yp2::RouterFleXML::Rep::Rep() : m_xinclude(false)
+{
+}
+
+void yp2::RouterFleXML::Rep::base(xmlDocPtr doc, yp2::FactoryFilter &factory)
+{
+ m_factory = &factory;
+ parse_xml_config_dom(doc);
+ m_start_route = "start";
+}
+
+yp2::RouterFleXML::RouterFleXML(xmlDocPtr doc, yp2::FactoryFilter &factory)
+ : m_p(new Rep)
+{
+ m_p->base(doc, factory);
+}
+
+yp2::RouterFleXML::RouterFleXML(std::string xmlconf, yp2::FactoryFilter &factory)
+ : m_p(new Rep)
+{
+ LIBXML_TEST_VERSION;
+
+ xmlDocPtr doc = xmlParseMemory(xmlconf.c_str(),
+ xmlconf.size());
+ if (!doc)
+ throw yp2::XMLError("xmlParseMemory failed");
+ else
+ {
+ m_p->base(doc, factory);
+ xmlFreeDoc(doc);
+ }
+}
+
+yp2::RouterFleXML::~RouterFleXML()
+{
+}
+
+const yp2::filter::Base *yp2::RouterFleXML::Pos::move(const char *route)
+{
+ if (route && *route)
+ {
+ std::cout << "move to " << route << "\n";
+ m_route_it = m_p->m_routes.find(route);
+ if (m_route_it == m_p->m_routes.end())
+ {
+ std::cout << "no such route " << route << "\n";
+ throw yp2::XMLError("bad route " + std::string(route));
+ }
+ m_filter_it = m_route_it->second.m_list.begin();
+ }
+ if (m_filter_it == m_route_it->second.m_list.end())
+ return 0;
+ const yp2::filter::Base *f = (*m_filter_it).get();
+ m_filter_it++;
+ return f;
+}
+
+yp2::RoutePos *yp2::RouterFleXML::createpos() const
+{
+ yp2::RouterFleXML::Pos *p = new yp2::RouterFleXML::Pos;
+
+ p->m_route_it = m_p->m_routes.find(m_p->m_start_route);
+ if (p->m_route_it == m_p->m_routes.end())
+ {
+ delete p;
+ return 0;
+ }
+ p->m_filter_it = p->m_route_it->second.m_list.begin();
+ p->m_p = m_p.get();
+ return p;
+}
+
+yp2::RoutePos *yp2::RouterFleXML::Pos::clone()
+{
+ yp2::RouterFleXML::Pos *p = new yp2::RouterFleXML::Pos;
+ p->m_filter_it = m_filter_it;
+ p->m_route_it = m_route_it;
+ p->m_p = m_p;
+ return p;
+}
+yp2::RouterFleXML::Pos::~Pos()
+{
+}
/*
projects / metaproxy-moved-to-github.git / blobdiff