Initial workings of project2 - renders gentoobrowse homepage

1 files changed, 78 insertions, 0 deletions

diff --git a/project2/envproc.cpp b/project2/envproc.cpp
new file mode 100644
index 0000000..0313c0f
--- /dev/null
+++ b/project2/envproc.cpp
@@ -0,0 +1,78 @@
+#include "envproc.h"
+#include "rdbmsDataSource.h"
+#include "sqlView.h"
+#include <map>
+#include <libxml/tree.h>
+#include <libxml/xinclude.h>
+#include <boost/shared_ptr.hpp>
+#include <boost/any.hpp>
+#include <boost/foreach.hpp>
+
+void
+EnvironmentProcessor::init()
+{
+	elems = regexExtractSet("/([^/?]+)", request_uri.c_str());
+	params = regexExtractMulti("&?([^=]+)=?([^&]*)", query_string.c_str(), 2);
+	page = elems.size() > 0 ? elems[0] : "index";
+}
+
+template <class X, class Y>
+void
+collectAll(std::map<ustring, Y> & objs, xmlNodePtr node, const ustring & name)
+{
+	if (name == node->name) {
+		fprintf(stderr, "Found a %s\n", name.c_str());
+		try {
+			objs[xmlGetProp(node, BAD_CAST "name")] = Y(new X(node));
+			fprintf(stderr, "Load succeeded\n");
+		}
+		catch (const std::exception & e) {
+			// Assume the XML node is what we thought it was
+			fprintf(stderr, "Load failed (%s)\n", e.what());
+		}
+		catch (...) {
+			// Assume the XML node is what we thought it was
+			fprintf(stderr, "Load failed\n");
+		}
+	}
+	else {
+		for (xmlNodePtr child = node->children; child; child = child->next) {
+			collectAll<X, Y>(objs, child, name);
+		}
+	}
+}
+
+xmlDocPtr
+EnvironmentProcessor::process()
+{
+	xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
+	xmlDocPtr pageXDoc = xmlReadFile(("present/" + page + ".xml").c_str(), NULL, XML_PARSE_XINCLUDE);
+	while (xmlXIncludeProcess(pageXDoc) > 0);
+	xmlNodePtr root = xmlDocGetRootElement(pageXDoc);
+	// Collect datasources
+	RdbmsDataSources rdbmsDataSources;
+	collectAll<_RdbmsDataSource>(rdbmsDataSources, root, BAD_CAST "rdbmsdatasource");
+	// Collect views
+	SqlViews sqlViews;
+	collectAll<_SqlView>(sqlViews, root, BAD_CAST "sqlview");
+	//
+	xmlNodePtr root_node = xmlNewNode(NULL, xmlGetProp(root, BAD_CAST "root"));
+	try {
+		BOOST_FOREACH(SqlViews::value_type s, sqlViews) {
+			s.second->execute(rdbmsDataSources, root_node);
+		}
+	}
+	catch (...) {
+	}
+	xmlDocSetRootElement(doc, root_node);
+	char * buf;
+	if (asprintf(&buf, "type=\"text/xsl\" href=\"%s\"",
+			xmlGetProp(root, BAD_CAST "style")) > 0) {
+		xmlAddPrevSibling(root_node,
+				xmlNewDocPI(doc, BAD_CAST "xml-stylesheet", BAD_CAST buf));
+	}
+	free(buf);
+	xmlFreeDoc(pageXDoc);
+	return doc;
+}
+