commit a037316bb5bb9f3337151e449b71d1313efe24b7
author Szymon Janc <ext.szymon.janc@tieto.com> Wed Oct 26 18:15:02 2016 +0200
committer Anas Nashif <nashif@linux.intel.com> Tue Nov 01 23:37:37 2016 +0000
tree dad9392a108de264c258cca59c62574172ebb078
parent 6b0cf54c60f99252c5279e89640e544b89ac8798

console: Add support for DEL key

This allows to delete character after cursor.

Change-Id: I9acc5e1edeb688ea4ec36e91aef69ecb5f5f6354
Signed-off-by: Szymon Janc <ext.szymon.janc@tieto.com>

drivers/console/uart_console.c

diff --git a/drivers/console/uart_console.c b/drivers/console/uart_console.c
index 9bc40b9..54fb549 100644
--- a/drivers/console/uart_console.c
+++ b/drivers/console/uart_console.c
@@ -151,6 +151,7 @@
 #define ANSI_BACKWARD      'D'
 #define ANSI_END           'F'
 #define ANSI_HOME          'H'
+#define ANSI_DEL           '~'
 
 static int read_uart(struct device *uart, uint8_t *buf, unsigned int size)
 {
@@ -250,7 +251,7 @@
 static unsigned int ansi_val, ansi_val_2;
 static uint8_t cur, end;
 
-static void handle_ansi(uint8_t byte)
+static void handle_ansi(uint8_t byte, char *line)
 {
 	if (atomic_test_and_clear_bit(&esc_state, ESC_ANSI_FIRST)) {
 		if (!isdigit(byte)) {
@@ -324,6 +325,14 @@
 		cur += end;
 		end = 0;
 		break;
+	case ANSI_DEL:
+		if (!end) {
+			break;
+		}
+
+		cursor_forward(1);
+		del_char(&line[cur], --end);
+		break;
 	default:
 		break;
 	}
@@ -370,7 +379,7 @@
 
 		/* Handle ANSI escape mode */
 		if (atomic_test_bit(&esc_state, ESC_ANSI)) {
-			handle_ansi(byte);
+			handle_ansi(byte, cmd->line);
 			continue;
 		}