69 lines
2.1 KiB
CoffeeScript
69 lines
2.1 KiB
CoffeeScript
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class @ImageTextModeAVATAR extends @ImageTextMode
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constructor: ( options ) ->
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super
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@tabstop = 8
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@linewrap = 80
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this[k] = v for own k, v of options
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parse: ( content ) ->
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@screen = []
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@x = 0
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@y = 0
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@attr = 3
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content = content.split( '' )
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while ch = content.shift()
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if ch is "\x1a"
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break
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else if ch is "\n"
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@x = 0
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@y++
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else if ch is "\r"
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continue
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else if ch is "\t"
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i = ( @x + 1 ) % @tabstop
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@putpixel ' ' while i-- > 0
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else if ch.charCodeAt( 0 ) is 12
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@screen = []
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@attr = 3
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@insert = false
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else if ch.charCodeAt( 0 ) is 25
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ch = content.shift()
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i = content.shift().charCodeAt( 0 )
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@putpixel( ch ) while i-- > 0
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else if ch.charCodeAt( 0 ) is 22
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c = content.shift().charCodeAt( 0 )
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switch c
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when 1
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@attr = content.shift().charCodeAt( 0 ) & 0x7f
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when 2
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@attr |= 0x80
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when 3
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@y--
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@y = 0 if @y < 0
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when 4
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@y++
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when 5
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@x--
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@x = 0 if @x < 0
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when 6
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@x++
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when 7
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@screen[ @y ][ i ] = null for i in [ @x .. screen[ @y ].length - 1 ]
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when 8
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@y = content.shift().charCodeAt( 0 ) - 1
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@x = content.shift().charCodeAt( 0 ) - 1
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@y = 0 if @y < 0
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@x = 0 if @x < 0
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else
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@putpixel ch
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putpixel: ( ch ) ->
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@screen[ @y ] = [] if !@screen[ @y ]?
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@screen[ @y ][ @x ] = { ch: ch, attr: @attr }
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if ++@x >= @linewrap
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@x = 0
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@y++
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