injectors

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.20)
 include(cmake/color.cmake)
-set(BLT_VERSION 5.2.8)
+set(BLT_VERSION 5.2.9)
 
 set(BLT_TARGET BLT)
 

include/blt/logging/fwddecl.h

@@ -30,6 +30,8 @@ namespace blt::logging
 	struct fmt_token_t;
 	class fmt_tokenizer_t;
 	class fmt_parser_t;
+
+	class injector_t;
 }
 
 #endif //BLT_LOGGING_FWDDECL_H

include/blt/logging/injector.h

@@ -0,0 +1,41 @@
+#pragma once
+/*
+ *  Copyright (C) 2024  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef BLT_LOGGING_INJECTOR_H
+#define BLT_LOGGING_INJECTOR_H
+
+namespace blt::logging
+{
+	struct injector_output_t
+	{
+		std::string new_logging_output;
+		// should we continue processing the injector call chain?
+		bool should_continue;
+		// should we log the resulting string at the end of the injector call chain? If false for any injector, it becomes false for all injectors.
+		bool should_log;
+	};
+
+	class injector_t
+	{
+	public:
+		virtual ~injector_t() = default;
+		virtual injector_output_t inject(const std::string& input) = 0;
+	};
+}
+
+#endif //BLT_LOGGING_INJECTOR_H

include/blt/logging/logging_config.h

@@ -20,6 +20,7 @@
 #define BLT_LOGGING_LOGGING_CONFIG_H
 
 #include <array>
+#include <memory>
 #include <optional>
 #include <string>
 #include <vector>
@@ -133,9 +134,15 @@ namespace blt::logging
 
 		void compile();
 
-		logging_config_t& add_log_output(fs::writer_t* writer)
+		logging_config_t& add_log_output(fs::writer_t& writer)
 		{
-			m_log_outputs.push_back(writer);
+			m_log_outputs.push_back(&writer);
+			return *this;
+		}
+
+		logging_config_t& add_injector(injector_t* injector)
+		{
+			m_injectors.push_back(std::unique_ptr<injector_t>(injector));
 			return *this;
 		}
 
@@ -200,8 +207,7 @@ namespace blt::logging
 											i32 line) const;
 
 	private:
-		std::vector<std::string> m_log_tag_content;
-		std::vector<tags::detail::log_tag_token_t> m_log_tag_tokens;
+		std::vector<std::unique_ptr<injector_t>> m_injectors;
 		// wrappers for streams exist in blt/fs/stream_wrappers.h
 		std::vector<fs::writer_t*> m_log_outputs = get_default_log_outputs();
 		std::string m_log_format = get_default_log_format();
@@ -219,6 +225,9 @@ namespace blt::logging
 
 		size_t m_longest_name_length = 0;
 
+		std::vector<std::string> m_log_tag_content;
+		std::vector<tags::detail::log_tag_token_t> m_log_tag_tokens;
+
 		static std::string get_default_log_format();
 		static std::vector<fs::writer_t*> get_default_log_outputs();
 		static std::array<std::string, LOG_LEVEL_COUNT> get_default_log_level_colors();

src/blt/logging/logging.cpp

@@ -20,7 +20,7 @@
 #include <mutex>
 #include <sstream>
 #include <thread>
-#include <blt/iterator/enumerate.h>
+#include <blt/logging/injector.h>
 #include <blt/logging/logging.h>
 #include <blt/std/hashmap.h>
 #include <blt/std/types.h>