From de2d983ab85b383d3d35cf0fb0a85f28835b09f6 Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Wed, 30 Mar 2011 19:44:15 +0100
Subject: [cmdline] Add support for shell history

The up and down arrow keys will now function roughly as expected at
the iPXE command line.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 src/hci/shell.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/hci/shell.c b/src/hci/shell.c
index f8b1ec27..e426ba94 100644
--- a/src/hci/shell.c
+++ b/src/hci/shell.c
@@ -21,6 +21,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 #include <getopt.h>
 #include <readline/readline.h>
 #include <ipxe/command.h>
@@ -75,17 +76,25 @@ struct command help_command __command = {
  *
  */
 int shell ( void ) {
+	struct readline_history history;
 	char *line;
 	int rc = 0;
 
+	/* Initialise shell history */
+	memset ( &history, 0, sizeof ( history ) );
+
+	/* Read and execute commands */
 	do {
-		line = readline ( shell_prompt );
+		line = readline_history ( shell_prompt, &history );
 		if ( line ) {
 			rc = system ( line );
 			free ( line );
 		}
 	} while ( ! shell_stopped ( SHELL_STOP_COMMAND_SEQUENCE ) );
 
+	/* Discard shell history */
+	history_free ( &history );
+
 	return rc;
 }
 
-- 
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