add filewatch

external/CMakeLists.txt

@@ -20,3 +20,22 @@ if (NOT TARGET solanaceae_plugin)
 	FetchContent_MakeAvailable(solanaceae_plugin)
 endif()
 
+if (NOT TARGET filewatch)
+	FetchContent_Declare(filewatch
+		GIT_REPOSITORY https://github.com/ThomasMonkman/filewatch.git
+		GIT_TAG master
+		EXCLUDE_FROM_ALL
+	)
+
+	# does not provide a proper cmake
+	FetchContent_GetProperties(filewatch)
+	if(NOT filewatch_POPULATED)
+		FetchContent_Populate(filewatch)
+
+		add_library(filewatch INTERFACE
+			${filewatch_SOURCE_DIR}/FileWatch.hpp
+		)
+		target_include_directories(filewatch INTERFACE ${filewatch_SOURCE_DIR})
+		target_compile_features(filewatch INTERFACE cxx_std_11)
+	endif()
+endif()

src/CMakeLists.txt

@@ -13,6 +13,7 @@ target_include_directories(solanaceae_factorio PUBLIC .)
 target_compile_features(solanaceae_factorio PUBLIC cxx_std_17)
 target_link_libraries(solanaceae_factorio PUBLIC
 	solanaceae_message3
+	filewatch
 )
 
 ########################################

src/factorio.cpp

@@ -5,7 +5,13 @@
 
 #include "./log_parse.hpp"
 
-Factorio::Factorio(Contact3Registry& cr, RegistryMessageModel& rmm) : _cr(cr), _rmm(rmm) {
+Factorio::Factorio(Contact3Registry& cr, RegistryMessageModel& rmm) :
+	_cr(cr),
+	_rmm(rmm),
+	_fw("test.txt", [this](const auto& path, const auto event){ this->onFileEvent(path, event);})
+{
+
+
 	_rmm.subscribe(this, RegistryMessageModel_Event::message_construct);
 }
 
@@ -16,3 +22,7 @@ bool Factorio::onEvent(const Message::Events::MessageConstruct& e) {
 	return false;
 }
 
+void onFileEvent(const std::string& path, const filewatch::Event change_type) {
+	std::cout << "file even " << filewatch::event_to_string(change_type) << " on '" << path << "'\n";
+}
+

src/factorio.hpp

@@ -2,15 +2,24 @@
 
 #include <solanaceae/message3/registry_message_model.hpp>
 
+#include <FileWatch.hpp>
+
+#include <string>
+
 class Factorio : public RegistryMessageModelEventI {
 	Contact3Registry& _cr;
 	RegistryMessageModel& _rmm;
 
+	filewatch::FileWatch<std::string> _fw;
+
 	public:
 		Factorio(Contact3Registry& cr, RegistryMessageModel& rmm);
 		virtual ~Factorio(void);
 
 	protected: // rmm
 		bool onEvent(const Message::Events::MessageConstruct& e) override;
+
+	protected:
+		void onFileEvent(const std::string& path, const filewatch::Event change_type);
 };