Add a bunch of C header samples for the Bayesian classifier

samples/C/filter.h

@@ -0,0 +1,45 @@
+#pragma once
+
+/* Copyright © 2011 Fritz Grimpen
+ *
+ * This file is part of Xelix.
+ *
+ * Xelix 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.
+ *
+ * Xelix 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 Xelix. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <lib/generic.h>
+#include <console/info.h>
+#include <console/driver.h>
+
+struct console_filter {
+	// General callback for all actions etc.
+	// Preferred prototype:
+	// char <name>(char c, console_info_t *info, console_driver_t *input, console_driver_t *output);
+	char (*callback)(char, console_info_t*, console_driver_t*, console_driver_t*);
+
+	// Specific callbacks for read and write
+	// Preferred prototype:
+	// char <name>(char c, console_info_t *info, console_driver_t *input);
+	char (*read_callback)(char, console_info_t*, console_driver_t*);
+
+	// Preferred prototype:
+	// char <name>(char c, console_info_t *info, console_driver_t *output);
+	char (*write_callback)(char, console_info_t*, console_driver_t*);
+
+	// The next filter in the filter chain
+	struct console_filter* next;
+};
+
+typedef struct console_filter console_filter_t;
+