From 2cb8586c943d4e299f067f96cf57543352224609 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= <ondra@ondrovo.com>
Date: Thu, 10 Aug 2017 01:58:10 +0200
Subject: [PATCH] preparation for insert and delete commands

---
 user/ansi_parser_callbacks.c |  8 ++++----
 user/screen.c                | 28 ++++++++++++++++++++++++++++
 user/screen.h                |  6 ++++++
 3 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/user/ansi_parser_callbacks.c b/user/ansi_parser_callbacks.c
index 0aa64ea..712ef04 100644
--- a/user/ansi_parser_callbacks.c
+++ b/user/ansi_parser_callbacks.c
@@ -267,19 +267,19 @@ apars_handle_CSI(char leadchar, int *params, char keychar)
 			break;
 
 		case 'L':
-			// TODO insert line
+			screen_insert_lines(n1);
 			break;
 
 		case 'M':
-			// TODO delete line
+			screen_delete_lines(n1);
 			break;
 
 		case '@':
-			// TODO insert character (in line)
+			screen_insert_characters(n1);
 			break;
 
 		case 'P':
-			// TODO delete character (in line)
+			screen_delete_characters(n1);
 			break;
 	}
 }
diff --git a/user/screen.c b/user/screen.c
index 0cc86f8..17bbcea 100644
--- a/user/screen.c
+++ b/user/screen.c
@@ -276,6 +276,34 @@ screen_fill_with_E(void)
 
 //region Screen manipulation
 
+void screen_insert_lines(unsigned int lines)
+{
+	NOTIFY_LOCK();
+	// TODO
+	NOTIFY_DONE();
+}
+
+void screen_delete_lines(unsigned int lines)
+{
+	NOTIFY_LOCK();
+	// TODO
+	NOTIFY_DONE();
+}
+
+void screen_insert_characters(unsigned int count)
+{
+	NOTIFY_LOCK();
+	// TODO
+	NOTIFY_DONE();
+}
+
+void screen_delete_characters(unsigned int count)
+{
+	NOTIFY_LOCK();
+	// TODO
+	NOTIFY_DONE();
+}
+
 /**
  * Change the screen size
  *
diff --git a/user/screen.h b/user/screen.h
index b2d93f0..705b4bf 100644
--- a/user/screen.h
+++ b/user/screen.h
@@ -122,6 +122,12 @@ void screen_scroll_down(unsigned int lines);
 /** esc # 8 - fill entire screen with E of default colors */
 void screen_fill_with_E(void);
 
+// --- insert / delete ---
+void screen_insert_lines(unsigned int lines);
+void screen_delete_lines(unsigned int lines);
+void screen_insert_characters(unsigned int count);
+void screen_delete_characters(unsigned int count);
+
 // --- Cursor control ---
 
 /** Set cursor position */