Extended error logging

Fixes #33

src/ifcparse/IfcLogger.cpp

@@ -0,0 +1,73 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell is distributed in the hope that it will be useful,              *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of               *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#include "IfcLogger.h"
+#include "../ifcparse/IfcException.h"
+
+#include <boost/algorithm/string/replace.hpp>
+#include <boost/optional.hpp>
+
+#include <iostream>
+#include <algorithm>
+
+
+void Logger::SetProduct(boost::optional<IfcSchema::IfcProduct*> product) {
+	current_product = product;
+}
+void Logger::SetOutput(std::ostream* l1, std::ostream* l2) { 
+	log1 = l1; 
+	log2 = l2; 
+	if ( ! log2 ) {
+		log2 = &log_stream;
+	}
+}
+void Logger::Message(Logger::Severity type, const std::string& message, IfcAbstractEntity* entity) {
+	if ( log2 && type >= verbosity ) {
+		(*log2) << "[" << severity_strings[type] << "] ";
+		if ( current_product ) {
+		    (*log2) << "{" << (*current_product)->GlobalId() << "} ";
+		}
+		(*log2) << message << std::endl;
+		if ( entity ) (*log2) << entity->toString() << std::endl;
+	}
+}
+void Logger::Status(const std::string& message, bool new_line) {
+	if ( log1 ) {
+		(*log1) << message;
+		if ( new_line ) (*log1) << std::endl;
+		else (*log1) << std::flush;
+	}
+}
+void Logger::ProgressBar(int progress) {
+	if ( log1 ) {
+		Status("\r[" + std::string(progress,'#') + std::string(50 - progress,' ') + "]", false);
+	}
+}
+std::string Logger::GetLog() {
+	return log_stream.str();
+}
+void Logger::Verbosity(Logger::Severity v) { verbosity = v; }
+Logger::Severity Logger::Verbosity() { return verbosity; }
+
+std::ostream* Logger::log1 = 0;
+std::ostream* Logger::log2 = 0;
+std::stringstream Logger::log_stream;
+Logger::Severity Logger::verbosity = Logger::LOG_NOTICE;
+const char* Logger::severity_strings[] = { "Notice","Warning","Error" };
+boost::optional<IfcSchema::IfcProduct*> Logger::current_product;