From: Jason Woofenden <jason@jasonwoof.com>
Date: Thu, 31 Jan 2013 03:44:13 +0000 (-0500)
Subject: add csi_J, fix csi_K(2)
X-Git-Tag: v1.0~29
X-Git-Url: https://jasonwoof.com/gitweb/?p=watch-my-terminal.git;a=commitdiff_plain;h=17c9edab23a2371d7b553aa5d0ffe8f1d41b0bc1

add csi_J, fix csi_K(2)
---

diff --git a/terminal.coffee b/terminal.coffee
index 11c79e0..f3ed817 100644
--- a/terminal.coffee
+++ b/terminal.coffee
@@ -125,6 +125,27 @@ class Terminal
 		else
 			console.log "tried to move cursor to invalid row: #{row}"
 
+	# clear lines (implemented inclusive of the current line)
+	csi_J: (direction) ->
+		switch @fix_esc_arg direction, '0'
+			when '0' # erase down
+				for row in [@y...@height]
+					for i in [0...@width]
+						@text[row][i] = ' '
+						@attributes[row][i] = @a
+			when '1' # erase up
+				for row in [0..@y]
+					for i in [0...@width]
+						@text[row][i] = ' '
+						@attributes[row][i] = @a
+			when '2' # erase everything
+				for row in [0...@height]
+					for i in [0...@width]
+						@text[row][i] = ' '
+						@attributes[row][i] = @a
+			else
+				console.log "confusing arg for csi_J: #{direction}"
+
 	# clear (some or all of) current line
 	csi_K: (direction) ->
 		switch @fix_esc_arg direction, '0'
@@ -136,10 +157,12 @@ class Terminal
 				for i in [0...@x]
 					@text[@y][i] = ' '
 					@attributes[@y][i] = @a
-			when '0' # erase whole line
+			when '2' # erase whole line
 				for i in [0...@width]
 					@text[@y][i] = ' '
 					@attributes[@y][i] = @a
+			else
+				console.log "confusing arg for csi_K: #{direction}"
 
 	# set color, bold, underline, etc
 	csi_m: ->