Add ConsoleLogSink class

Author: albin-johansson

include/tactile/core/log/console_log_sink.hpp

@@ -0,0 +1,24 @@
+// Copyright (C) 2025 Albin Johansson
+// This software is provided under the terms of the MIT License.
+
+#pragma once
+
+#include "tactile/core/log/log_sink.hpp"
+
+namespace tactile {
+
+/// A log sink that forwards messages to the console.
+class ConsoleLogSink final : public ILogSink
+{
+ public:
+  void flush() override;
+
+  void log(const LogEntry& entry) override;
+
+  void set_ansi_colors(bool enabled);
+
+ private:
+  bool m_ansi_colors {true};
+};
+
+}  // namespace tactile

src/tactile/core/log/console_log_sink.cpp

@@ -0,0 +1,70 @@
+// Copyright (C) 2025 Albin Johansson
+// This software is provided under the terms of the MIT License.
+
+#include "tactile/core/log/console_log_sink.hpp"
+
+#include <iostream>
+#include <ostream>
+
+#include "tactile/core/container/string.hpp"
+
+namespace tactile {
+namespace {
+
+constexpr StringView kAnsiColorReset = "\x1B[0m";
+constexpr StringView kAnsiColorFgRedBold = "\x1B[31m\x1B[1m";
+constexpr StringView kAnsiColorFgYellow = "\x1B[33m";
+constexpr StringView kAnsiColorFgMagenta = "\x1B[35m";
+constexpr StringView kAnsiColorFgCyan = "\x1B[36m";
+constexpr StringView kAnsiColorFgWhite = "\x1B[37m";
+
+auto to_ansi_color(const LogCategory category) noexcept -> StringView
+{
+  switch (category) {
+    case LogCategory::kVerbose:
+      return kAnsiColorFgMagenta;
+
+    case LogCategory::kDebug:
+      return kAnsiColorFgCyan;
+
+    case LogCategory::kInfo:
+      return kAnsiColorFgWhite;
+
+    case LogCategory::kWarn:
+      return kAnsiColorFgYellow;
+
+    case LogCategory::kError:
+      return kAnsiColorFgRedBold;
+  }
+
+  return kAnsiColorFgWhite;
+}
+
+}  // namespace
+
+void ConsoleLogSink::flush()
+{
+  std::clog << std::flush;
+}
+
+void ConsoleLogSink::log(const LogEntry& entry)
+{
+  if (m_ansi_colors) {
+    std::clog << to_ansi_color(entry.category);
+  }
+
+  std::clog << entry.prefix << ' ' << entry.message;
+
+  if (m_ansi_colors) {
+    std::clog << kAnsiColorReset;
+  }
+
+  std::clog << '\n';
+}
+
+void ConsoleLogSink::set_ansi_colors(const bool enabled)
+{
+  m_ansi_colors = enabled;
+}
+
+}  // namespace tactile

tools/cmake/targets/tactile_core.cmake

@@ -18,6 +18,7 @@ target_sources(tactile_core
                "${PROJECT_SOURCE_DIR}/include/tactile/core/container/string.hpp"
                "${PROJECT_SOURCE_DIR}/include/tactile/core/container/variant.hpp"
                "${PROJECT_SOURCE_DIR}/include/tactile/core/container/vector.hpp"
+               "${PROJECT_SOURCE_DIR}/include/tactile/core/log/console_log_sink.hpp"
                "${PROJECT_SOURCE_DIR}/include/tactile/core/log/log_category.hpp"
                "${PROJECT_SOURCE_DIR}/include/tactile/core/log/log_entry.hpp"
                "${PROJECT_SOURCE_DIR}/include/tactile/core/log/log_sink.hpp"
@@ -31,5 +32,6 @@ target_sources(tactile_core
                "${PROJECT_SOURCE_DIR}/include/tactile/core/primitives.hpp"
 
                PRIVATE
+               "${PROJECT_SOURCE_DIR}/src/tactile/core/log/console_log_sink.cpp"
                "${PROJECT_SOURCE_DIR}/src/tactile/core/meta/attribute.cpp"
                )