@a = 0x000007 # cursor attributes
@partial = ''
@resize width, height
-
+
resize: (width, height) ->
# FIXME: write a version that retains some of the data
@width = width
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]
@attributes.push(tmp)
# slide cursor up with rest of text
@y -= 1
-
+
wrap_to_next_line: ->
if @y is @height - 1
@add_new_line()
if @x is @width
@wrap_to_next_line()
return
-
+
set_attribute_bits: (mask, value) ->
@a = (@a & ~mask) | value
- csi_m: default: "0", go: ->
+ # we're supposed to ignore leeding zeros, and while we're at it, lets swap
+ # in the default for blank or missing values
+ fix_esc_arg: (value, deef_alt) ->
+ if value? and value != ''
+ while value[0] is '0' and value.length > 1
+ value = value.substr 1
+ return value
+ else
+ return deef_alt
+
+ # set cursor position (one based)
+ csi_H: (row, column) ->
+ row = 0 + @fix_esc_arg row, 1
+ column = 0 + @fix_esc_arg column, 1
+ # convert to 0 base
+ column -= 1
+ if 0 <= column < @width
+ @x = column
+ else
+ console.log "tried to move cursor to invalid column: #{column}"
+ row -= 1
+ if 0 <= row < @height
+ @y = row
+ else
+ console.log "tried to move cursor to invalid row: #{row}"
+
+ # clear (some or all of) current line
+ csi_K: (direction) ->
+ switch @fix_esc_arg direction, '0'
+ when '0' # erase to right
+ for i in [@x...@width]
+ @text[@y][i] = ' '
+ @attributes[@y][i] = @a
+ when '1' # erase to left
+ for i in [0...@x]
+ @text[@y][i] = ' '
+ @attributes[@y][i] = @a
+ when '0' # erase whole line
+ for i in [0...@width]
+ @text[@y][i] = ' '
+ @attributes[@y][i] = @a
+
+ # set color, bold, underline, etc
+ csi_m: ->
+ args = []
for i in arguments
- fixed = i
- while fixed[0] is '0'
- fixed = fixed.substr 1
- switch fixed
+ args.push @fix_esc_arg i, 0
+
+ while args.length > 0
+ switch args.shift()
# remove all style/color
- when '' # leading zeros are removed (even if that's all of them)
+ when '0'
@set_attribute_bits 0xffffff, 0x000007
# style attributes
@set_attribute_bits 0x40000, 0x40000
when '8' # invisible
@set_attribute_bits 0x80000, 0x80000
-
+
# disable style attributes
when '22' # not bold... according to a page
@set_attribute_bits 0x10000, 0
when '37', '39' # fg white (39 is default)
@set_attribute_bits 0xff, 0x07
+ when '38'
+ if args.length >= 2 and args[0] is '5'
+ args.shift()
+ @set_attribute_bits 0xff, (0xff & args.shift())
+ else
+ @set_attribute_bits 0x20000, 0x20000
+
# 8 bg colors
when '40' # bg black
@set_attribute_bits 0xff00, 0x0000
when '49' # bg default
@set_attribute_bits 0xff00, 0x0000
+ when '48'
+ if args.length >= 2 and args[0] is '5'
+ args.shift()
+ @set_attribute_bits 0xff00, ((0xff & args.shift()) << 8)
+ else
+ @set_attribute_bits 0x20000, 0x20000
+
# bright fg colors
when '90' # fg bright black
@set_attribute_bits 0xff, 0x08
# str is the whole escape sequence (minus the esc[ prefix)
update_sequence: (str) ->
command = @["csi_#{str.substr str.length - 1}"]
- return unless command?
+ if not command?
+ console.log "Unrecognized sequence: ESC[#{str}"
+ return
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...
+ command.call this, args...
update_sequence_then_text: (str) ->
len = @escape_sequence_length str
Got questions, comments, patches, etc.? Contact Jason Woofenden