X-Git-Url: https://jasonwoof.com/gitweb/?p=watch-my-terminal.git;a=blobdiff_plain;f=terminal.coffee;h=360fb1ad57c8ce3d8ab9771f57b5b93603836e60;hp=94be906e2901c860a112442393aba45cd5297f00;hb=1700d1f6d76490cd696f9072bf28d595a4e484c5;hpb=7be31fd57ea61d523cafa9bbf950a326afd11968

diff --git a/terminal.coffee b/terminal.coffee
index 94be906..360fb1a 100644
--- a/terminal.coffee
+++ b/terminal.coffee
@@ -6,25 +6,26 @@ class Terminal
 	constructor: (width, height) ->
 		@width = 1
 		@height = 1
-		@text = [""]
-		@attributes = [0]
+		@text = []
+		@attributes = []
 		@x = 0
 		@y = 0
+		@a = 0 # cursor attributes
 		@partial = ''
 		@resize width, height
-		@text_callbacks = []
-		@sequence_callbacks = []
 	
-	on: (evt, callback) ->
-		@["#{evt}_callbacks"].push callback
-
 	resize: (width, height) ->
 		# FIXME: write a version that retains some of the data
+		@width = width
+		@height = height
 		@text = []
 		@attributes = []
-		for i in [0...height]
-			@text[i] = ""
-			@attributes[i] = new Array(width)
+		for y in [0...height]
+			@text[y] = []
+			@attributes[y] = []
+			for x in [0...width]
+				@text[y].push ' '
+				@attributes[y].push 0
 
 	# pass data from stdout
 	update: (data) ->
@@ -43,19 +44,133 @@ class Terminal
 				else
 					@update_sequence_then_text parts[i]
 		return
+	
+	clear_rest_of_line: ->
+		for i in [@x...@width]
+			@text[@y][i] = ' '
+			@attributes[@y][i] = @a
+	
+	add_new_line: ->
+		# clear top line
+		for i in [0...@width]
+			@text[0][i] = ' '
+			@attributes[0][i] = 0
+		# move (newly cleared) top line to the bottom
+		tmp = @text.shift()
+		@text.push(tmp)
+		tmp = @attributes.shift()
+		@attributes.push(tmp)
+		# slide cursor up with rest of text
+		@y -= 1
+	
+	wrap_to_next_line: ->
+		if @y is @height - 1
+			@add_new_line()
+		@y += 1
+		@x = 0
 
 	# str has no escape sequences
 	update_text: (str) ->
 		return unless str.length > 0
-		for c in @text_callbacks
-			c str
-		console.log "text: \"#{str}\"" # FIXME
+		for c in str
+			switch c
+				when '\t' # tab
+					@update_text "        ".substr(@x % 8)
+				when '\x07' # bell
+					false
+				when '\x0d' # cr
+					@x = 0
+				when '\x08' # backspace
+					if @x > 0
+						@x -= 1
+						@text[@y][@x] = ' '
+						# should this set the attribute too?
+				when '\x0a', '\x0b' # lf, vertical tab (same thing)
+					@wrap_to_next_line()
+				else
+					@text[@y][@x] = c
+					@attributes[@y][@x] = @a
+					@x += 1
+					if @x is @width
+						@wrap_to_next_line()
+		return
+	
+	set_attribute_bits: (mask, value) ->
+		@a = (@a & ~mask) | value
+
+	csi_m: default: "0", go: ->
+		for i in arguments
+			switch i
+				when '0'
+					@set_attribute_bits 0xffffff, 0
+				when '1' # bold
+					@set_attribute_bits 0x100, 1
+				when '4' # underline
+					@set_attribute_bits 0x200, 1
+				when '5' # blink
+					@set_attribute_bits 0x400, 1
+				when '8' # invisible
+					@set_attribute_bits 0x800, 1
+				
+				when '22' # not bold... according to a page
+					@set_attribute_bits 0x100, 0
+				when '21' # ... though this would make more sense for "not bold"
+					@set_attribute_bits 0x100, 0
+				when '24' # not underline
+					@set_attribute_bits 0x200, 0
+				when '25' # not blink
+					@set_attribute_bits 0x400, 0
+				when '28' # not invisible
+					@set_attribute_bits 0x800, 0
+
+				when '30' # fg black
+					@set_attribute_bits 0xff, 0
+				when '31' # fg red
+					@set_attribute_bits 0xff, 0xe0
+				when '32' # fg green
+					@set_attribute_bits 0xff, 0x1c
+				when '33' # fg yellow
+					@set_attribute_bits 0xff, 0xfc
+				when '34' # fg blue
+					@set_attribute_bits 0xff, 0x02
+				when '35' # fg magenta
+					@set_attribute_bits 0xff, 0xe2
+				when '36' # fg cyan
+					@set_attribute_bits 0xff, 0x1f
+				when '37', '39' # fg white  (39 is default)
+					@set_attribute_bits 0xff, 0xff
+
+				when '40' # bg black
+					@set_attribute_bits 0xff00, 0
+				when '41' # bg red
+					@set_attribute_bits 0xff00, 0xe000
+				when '42' # bg green
+					@set_attribute_bits 0xff00, 0x1c00
+				when '43' # bg yellow
+					@set_attribute_bits 0xff00, 0xfc00
+				when '44' # bg blue
+					@set_attribute_bits 0xff00, 0x0200
+				when '45' # bg magenta
+					@set_attribute_bits 0xff00, 0xe200
+				when '46' # bg cyan
+					@set_attribute_bits 0xff00, 0x1f00
+				when '47', '49' # bg white  (49 is default)
+					@set_attribute_bits 0xff00, 0xff
+
+				else
+					# if we don't recognize the style, go back to default
+					@set_attribute_bits 0xffffff, 0
+		return
 
 	# str is the whole escape sequence (minus the esc[ prefix)
 	update_sequence: (str) ->
-		for c in @sequence_callbacks
-			c str
-		console.log "sequence: \"#{str}\"" # FIXME
+		command = @["csi_#{str.substr str.length - 1}"]
+		return unless command?
+		args = str.substr(0, str.length - 1).split ';'
+		for i in [0...args.length]
+			if args[i] is ''
+				args[i] = command.default
+		command.go.call this, args...
 
 	update_sequence_then_text: (str) ->
 		len = @escape_sequence_length str