Add logging facility

src/log/Log.cpp

@@ -0,0 +1,92 @@
+/**
+ * @file Log.cpp
+ * @author Jun <jun@firmwarejun.net>
+ * @brief Logging utilities
+ * @version 0.1
+ * @date 2023-10-06
+ *
+ * Copyright (c) 2023 jun <https://git.firmwarejun.net/jun/MolecularDynamics2>
+ *
+ */
+
+#include "Log.hpp"
+
+#include <boost/core/null_deleter.hpp>
+#include <boost/date_time/posix_time/posix_time_types.hpp>
+#include <boost/log/sinks/sync_frontend.hpp>
+#include <boost/log/sinks/text_ostream_backend.hpp>
+#include <boost/log/support/date_time.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/formatter_parser.hpp>
+
+#include <boost/log/core.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/trivial.hpp>
+
+namespace logging = boost::log;
+namespace expr = boost::log::expressions;
+
+void my_formatter(logging::record_view const &rec,
+                  logging::formatting_ostream &strm) {
+  auto severity = rec[logging::trivial::severity];
+
+  auto white = "\033[37m";
+  auto red = "\033[31m";
+  auto green = "\033[32m";
+  auto yellow = "\033[33m";
+  auto blue = "\033[34m";
+  auto orange = "\033[35m";
+  auto cyan = "\033[36m";
+  auto clear = "\033[0m";
+
+  auto severityColor = white;
+
+  if (severity) {
+    // Set the color
+    switch (severity.get()) {
+    case logging::trivial::severity_level::info:
+      severityColor = cyan;
+      break;
+    case logging::trivial::severity_level::warning:
+      severityColor = yellow;
+      break;
+    case logging::trivial::severity_level::error:
+    case logging::trivial::severity_level::fatal:
+      severityColor = red;
+      break;
+    default:
+      // White
+      severityColor = white;
+      break;
+    }
+  }
+
+  strm << "[" << logging::extract<boost::posix_time::ptime>("TimeStamp", rec)
+       << "]";
+
+  strm << severityColor << "[" << severity.get() << "] " << rec[expr::smessage]
+       << clear;
+}
+
+void setupLogging() {
+  namespace sinks = boost::log::sinks;
+  namespace attrs = boost::log::attributes;
+  namespace keywords = boost::log::keywords;
+
+  boost::shared_ptr<sinks::text_ostream_backend> backend =
+      boost::make_shared<sinks::text_ostream_backend>();
+
+  backend->add_stream(
+      boost::shared_ptr<std::ostream>(&std::clog, boost::null_deleter()));
+
+  // typedef sinks::synchronous_sink<ColorSink> sink_t;
+  typedef sinks::synchronous_sink<sinks::text_ostream_backend> sink_t;
+
+  boost::shared_ptr<sink_t> sink(new sink_t(backend));
+
+  sink->set_formatter(&my_formatter);
+  sink->locked_backend()->auto_flush(true);
+
+  logging::add_common_attributes();
+  logging::core::get()->add_sink(sink);
+}

src/log/Log.hpp

@@ -0,0 +1,17 @@
+/**
+ * @file Log.hpp
+ * @author Jun <jun@firmwarejun.net>
+ * @brief Logging utilities
+ * @version 0.1
+ * @date 2023-10-06
+ *
+ * Copyright (c) 2023 jun <https://git.firmwarejun.net/jun/MolecularDynamics2>
+ *
+ */
+
+#pragma once
+
+#include <boost/log/sinks/basic_sink_backend.hpp>
+#include <boost/log/sinks/sync_frontend.hpp>
+
+void setupLogging();