gral_directory_monitor

eyelash · Feb 12, 2024 · f4d406b · f4d406b
1 parent 838ce82
commit f4d406b
Show file tree

Hide file tree

Showing 4 changed files with 37 additions and 0 deletions.
diff --git a/gral.h b/gral.h
@@ -181,6 +181,7 @@ void gral_file_remove(char const *path);
 void gral_directory_create(char const *path);
 void gral_directory_iterate(char const *path, void (*callback)(char const *name, void *user_data), void *user_data);
 void gral_directory_remove(char const *path);
+void gral_directory_monitor(char const *path, void (*callback)(void *user_data), void *user_data);
 
 
 /*=========

diff --git a/gral_linux.c b/gral_linux.c
@@ -768,6 +768,10 @@ void gral_directory_remove(char const *path) {
 	rmdir(path);
 }
 
+void gral_directory_monitor(char const *path, void (*callback)(void *user_data), void *user_data) {
+	// TODO: implement
+}
+
 
 /*=========
     TIME

diff --git a/gral_macos.m b/gral_macos.m
@@ -803,6 +803,10 @@ void gral_directory_remove(char const *path) {
 	rmdir(path);
 }
 
+void gral_directory_monitor(char const *path, void (*callback)(void *user_data), void *user_data) {
+	// TODO: implement
+}
+
 
 /*=========
     TIME

diff --git a/gral_windows.cpp b/gral_windows.cpp
@@ -1171,6 +1171,34 @@ void gral_directory_remove(char const *path) {
 	RemoveDirectory(utf8_to_utf16(path));
 }
 
+struct DirectoryMonitor {
+	HANDLE directory;
+	OVERLAPPED overlapped;
+	char buffer[4096];
+};
+
+static void directory_monitor_callback(DWORD dwErrorCode, DWORD dwNumberOfBytesTransfered, LPOVERLAPPED lpOverlapped) {
+	DirectoryMonitor *monitor = lpOverlapped.hEvent;
+	DWORD offset = 0;
+	while (TRUE) {
+		FILE_NOTIFY_INFORMATION *information = (FILE_NOTIFY_INFORMATION *)(monitor->buffer + offset);
+		if (information->NextEntryOffset == 0) {
+			break;
+		}
+		offset += information->NextEntryOffset;
+	}
+	ReadDirectoryChangesW(monitor->directory, monitor->buffer, sizeof(monitor->buffer), FALSE, FILE_NOTIFY_CHANGE_FILE_NAME, NULL, &monitor->overlapped, directory_monitor_callback);
+}
+
+void gral_directory_monitor(char const *path, void (*callback)(void *user_data), void *user_data) {
+	DirectoryMonitor *monitor = new DirectoryMonitor();
+	monitor->directory = CreateFile(utf8_to_utf16(path), FILE_LIST_DIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, NULL);
+	ZeroMemory(&monitor->overlapped, sizeof(monitor->overlapped));
+	monitor->overlapped.hEvent = monitor;
+	ReadDirectoryChangesW(monitor->directory, monitor->buffer, sizeof(monitor->buffer), FALSE, FILE_NOTIFY_CHANGE_FILE_NAME, NULL, &monitor->overlapped, directory_monitor_callback);
+	//CloseHandle(monitor->directory);
+}
+
 
 /*=========
     TIME