cli: add exit command to exit a console (#1371)

Add exit command, which can exit another console except for uart, e.g.
adb console/telnet console.

Export some apis that are needed by multi-console.
Signed-off-by: NJinliang Li <ljl150821@alibaba-inc.com>

components/cli/package.yaml

@@ -46,6 +46,7 @@ source_file:
   - src/iobox/pwd.c ? <CLI_IOBOX_ENABLE>
   - src/iobox/hexdump.c ? <CLI_IOBOX_ENABLE>
   - src/iobox/path_helper.c ? <CLI_IOBOX_ENABLE>
+  - src/iobox/exit.c ? <CLI_IOBOX_ENABLE>
 
 def_config:
   AOS_COMP_CLI: 1

components/cli/src/cli.c

@@ -75,7 +75,7 @@ extern uint32_t vfs_get_match_dev_node(const char *name, char *match_name);
 int32_t cli_va_printf(const char *fmt, va_list va);
 int32_t cli_printf(const char *fmt, ...);
 
-static inline void cli_prefix_print(void)
+void cli_prefix_print(void)
 {
 #if CLI_IOBOX_ENABLE
     char _buf[PATH_MAX] = {0};
@@ -716,7 +716,7 @@ static void cli_down_history(char *inaddr)
  *  Ctrl K               Delete to the end of the line
  *  Ctrl U               Delete the entire line
  */
-static int32_t cli_get_input(char *inbuf, uint32_t size)
+int32_t cli_get_input(char *inbuf, uint32_t size)
 {
     char c;
     uint32_t i;

components/cli/src/cli_adapt.h

@@ -40,6 +40,16 @@ void cli_task_exit(void);
  */
 int32_t cli_getchar(char *inbuf);
 
+/**
+ * @brief Output character to cli
+ *
+ * @param[out] ch the character to be outputed
+ *
+ * @return the number of the character
+ *
+ */
+int32_t cli_putchar(char ch);
+
 /**
  * @brief Put the message via uart
  *

components/cli/src/cli_console.c

@@ -244,7 +244,7 @@ static inline void cli_console_shared_sem_post(aos_sem_t *sem)
     aos_sem_signal(sem);
 }
 
-char *cli_task_get_console(void *task_handle)
+void *cli_task_get_console(void *task_handle)
 {
     ktask_t *task = (ktask_t *)task_handle;
     void *cli_console = NULL;

components/cli/src/cli_console.h

@@ -103,7 +103,7 @@ void check_console_task_exit(void);
 
 int cli_task_set_console(void *task_handle, void *console);
 
-char *cli_task_get_console(void *task_handle);
+void *cli_task_get_console(void *task_handle);
 
 void cli_console_remove_task_list_node(cli_console *console, void *task);
 

components/cli/src/iobox/exit.c

+/*
+ * Copyright (C) 2022 Alibaba Group Holding Limited
+ */
+
+#include <cli_api.h>
+#include <cli_console.h>
+
+static int exit_main(int argc, char **argv)
+{
+    cli_console *cur_console = cli_task_get_console(krhino_cur_task_get());
+    cli_console_set_exit_flag(cur_console);
+    return 0;
+}
+
+ALIOS_CLI_CMD_REGISTER(exit_main, exit, exit the console);