more progress on code 2

code2/grime/filesystem.odin

@@ -0,0 +1,62 @@
+package grime
+// TODO(Ed): Review when os2 is done.
+
+// TODO(Ed): Make an async option...
+file_copy_sync :: proc( path_src, path_dst: string, allocator := context.allocator ) -> b32
+{
+  file_size : i64
+	{
+		path_info, result := file_status( path_src, allocator )
+		if result != OS_ERROR_NONE {
+			log_fmt("Could not get file info: %v", result, LoggerLevel.Error )
+			return false
+		}
+		file_size = path_info.size
+	}
+
+	src_content, result := file_read_entire( path_src, allocator )
+	if ! result {
+		log_fmt( "Failed to read file to copy: %v", path_src, LoggerLevel.Error )
+		debug_trap()
+		return false
+	}
+
+	result = file_write_entire( path_dst, src_content, false )
+	if ! result {
+		log_fmt( "Failed to copy file: %v", path_dst, LoggerLevel.Error )
+		debug_trap()
+		return false
+	}
+	return true
+}
+
+file_exists :: proc( file_path : string, allocator := context.allocator ) -> b32 {
+	path_info, result := file_status( file_path, allocator )
+	if result != OS_ERROR_NONE {
+		return false
+	}
+	return true;
+}
+
+file_is_locked :: proc( file_path : string ) -> b32 {
+	handle, err := file_open(file_path, FS_Open_Readonly)
+	if err != OS_ERROR_NONE {
+			// If the error indicates the file is in use, return true.
+			return true
+	}
+
+	// If the file opens successfully, close it and return false.
+	file_close(handle)
+	return false
+}
+
+file_rewind :: proc( file : OS_Handle ) {
+	file_seek( file, 0, 0 )
+}
+
+file_read_looped :: proc( file : OS_Handle, data : []byte ) {
+	total_read, result_code := file_read( file, data )
+	if result_code == OS_ERROR_HANDLE_EOF {
+		file_rewind( file )
+	}
+}