--- libaitcli/src/cli.c	2013/08/12 09:50:29	1.6
+++ libaitcli/src/cli.c	2022/10/19 23:18:54	1.11.2.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: cli.c,v 1.6 2013/08/12 09:50:29 misho Exp $
+* $Id: cli.c,v 1.11.2.1 2022/10/19 23:18:54 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -12,7 +12,7 @@ terms:
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
-Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
+Copyright 2004 - 2022
 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -50,13 +50,15 @@ SUCH DAMAGE.
  * cli_Cmd_Exit() - Builtin helper function for Exit from Cli
  *
  * @cli_buffer = CLI buffer
- * @idx = Selected command ID
+ * @idx = Config level
  * @args = Parsed arguments array
  * return: RETCODE_EOF exit from Cli!
 */
-int cli_Cmd_Exit(void * __restrict cli_buffer, int idx, char ** __restrict args)
+int
+cli_Cmd_Exit(void * __restrict cli_buffer, int idx, char ** __restrict args)
 {
 	cli_Printf(cli_buffer, "\n");
+	((linebuffer_t*) cli_buffer)->line_kill = 42;
 	return RETCODE_EOF;
 }
 
@@ -64,11 +66,12 @@ int cli_Cmd_Exit(void * __restrict cli_buffer, int idx
  * cli_Cmd_Help() - Builtin helper function for Help screen
  *
  * @cli_buffer = CLI buffer
- * @idx = Selected command ID
+ * @idx = Config level
  * @args = Parsed arguments array
  * return: RETCODE_ERR in error or RETCODE_OK
 */
-int cli_Cmd_Help(void * __restrict cli_buffer, int idx, char ** __restrict args)
+int
+cli_Cmd_Help(void * __restrict cli_buffer, int idx, char ** __restrict args)
 {
 	linebuffer_t *buf = cli_buffer;
 	struct tagCommand *cmd;
@@ -80,8 +83,12 @@ int cli_Cmd_Help(void * __restrict cli_buffer, int idx
 
 	cli_Printf(buf, "\n");
 	if (!args) {
-		SLIST_FOREACH(cmd, &buf->line_cmds, cmd_next)
+		SLIST_FOREACH(cmd, &buf->line_cmds, cmd_next) {
+			if (!(cmd->cmd_level & (1 << idx)))
+				continue;
+
 			cli_Printf(buf, "%s\t\t%s\n", cmd->cmd_name, cmd->cmd_help);
+		}
 	} else {
 		if (!args[1])
 			cli_Printf(buf, "Help screen::\n");
@@ -90,8 +97,11 @@ int cli_Cmd_Help(void * __restrict cli_buffer, int idx
 				return RETCODE_OK;
 
 		SLIST_FOREACH(cmd, &buf->line_cmds, cmd_next) {
-			if (args[1] && (cmd->cmd_level != buf->line_level || strcmp(args[1], cmd->cmd_name)))
+			if (!(cmd->cmd_level & (1 << idx)))
 				continue;
+			if (args[1] && (!(cmd->cmd_level & (1 << idx)) || 
+						strcmp(args[1], cmd->cmd_name)))
+				continue;
 
 			cli_Printf(buf, "%s%s\t\t%s\n", args[1] ? "Syntax::\n\t" : "", cmd->cmd_name, 
 					args[1] ? cmd->cmd_info: cmd->cmd_help);
@@ -106,12 +116,99 @@ int cli_Cmd_Help(void * __restrict cli_buffer, int idx
  * cli_Cmd_Unsupported() - Builtin helper function for unsupported commands
  *
  * @cli_buffer = CLI buffer
- * @idx = Selected command ID
+ * @idx = Config level
  * @args = Parsed arguments array
  * return: RETCODE_OK ok
 */
-int cli_Cmd_Unsupported(void * __restrict cli_buffer, int idx, char ** __restrict args)
+int
+cli_Cmd_Unsupported(void * __restrict cli_buffer, int idx, char ** __restrict args)
 {
 	cli_Printf(cli_buffer, "Command %s not supported in this version ...\n", args[0]);
+	return RETCODE_OK;
+}
+
+/*
+ * cli_Cmd_Config() - Builtin helper function for enter into config level from Cli
+ *
+ * @cli_buffer = CLI buffer
+ * @idx = Config level
+ * @args = Parsed arguments array
+ * return: RETCODE_ERR in error or RETCODE_OK
+*/
+int
+cli_Cmd_Config(void * __restrict cli_buffer, int idx, char ** __restrict args)
+{
+	linebuffer_t *buf = cli_buffer;
+	char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
+
+	if (idx == sizeof idx * 8 - 1)
+		return RETCODE_ERR;
+
+	buf->line_level++;
+	snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
+	cli_setPrompt(buf, szPrompt);
+	cli_Printf(buf, "Enter to config level %d\n", buf->line_level);
+	return RETCODE_OK;
+}
+
+/*
+ * cli_Cmd_End() - Builtin helper function for end config level from Cli
+ *
+ * @cli_buffer = CLI buffer
+ * @idx = Config level
+ * @args = Parsed arguments array
+ * return: RETCODE_EOF in level 0 or RETCODE_OK
+*/
+int
+cli_Cmd_End(void * __restrict cli_buffer, int idx, char ** __restrict args)
+{
+	linebuffer_t *buf = cli_buffer;
+	char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
+
+	if (!idx)
+		return cli_Cmd_Exit(cli_buffer, idx, args);
+
+	buf->line_level--;
+	snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
+	cli_setPrompt(buf, szPrompt);
+	cli_Printf(buf, "Enter to config level %d\n", buf->line_level);
+	return RETCODE_OK;
+}
+
+/*
+ * cli_Cmd_Top() - Builtin helper function for top level of Cli
+ *
+ * @cli_buffer = CLI buffer
+ * @idx = Config level
+ * @args = Parsed arguments array
+ * return: RETCODE_OK ok
+*/
+int
+cli_Cmd_Top(void * __restrict cli_buffer, int idx, char ** __restrict args)
+{
+	linebuffer_t *buf = cli_buffer;
+	char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
+
+	buf->line_level ^= buf->line_level;
+	snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
+	cli_setPrompt(buf, szPrompt);
+	cli_Printf(buf, "Enter to top config level %d\n", buf->line_level);
+	return RETCODE_OK;
+}
+
+/*
+ * cli_Cmd_WhereAmI() - Builtin helper function for query level of Cli
+ *
+ * @cli_buffer = CLI buffer
+ * @idx = Config level
+ * @args = Parsed arguments array
+ * return: RETCODE_OK ok
+*/
+int
+cli_Cmd_WhereAmI(void * __restrict cli_buffer, int idx, char ** __restrict args)
+{
+	linebuffer_t *buf = cli_buffer;
+
+	cli_Printf(buf, "Current config level is %d\n", buf->line_level);
 	return RETCODE_OK;
 }