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234 lines
4.4 KiB
CoffeeScript
234 lines
4.4 KiB
CoffeeScript
class AsciiIo.VT
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constructor: (@cols, @lines) ->
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_.extend(this, Backbone.Events)
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@interpreter = new AsciiIo.AnsiInterpreter @onChange
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@reset()
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onChange: (action, args...) =>
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@[action](args...)
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feed: (data) ->
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rest = @interpreter.parse data
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rest.length is 0
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reset: ->
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@interpreter.reset()
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@resetTerminal()
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bell: ->
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@trigger 'bell'
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state: ->
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changes: @buffer.changes()
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cursorX: @buffer.cursorX
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cursorY: @buffer.cursorY
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clearChanges: ->
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@buffer.clearChanges()
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# ==== Screen buffer operations
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clearScreen: ->
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@buffer.clear()
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switchToNormalBuffer: ->
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@buffer = @normalBuffer
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@updateScreen()
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switchToAlternateBuffer: ->
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@alternateBuffer.setBrush(@normalBuffer.getBrush())
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@alternateBuffer.setCharset(@normalBuffer.getCharset())
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@buffer = @alternateBuffer
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@updateScreen()
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updateScreen: ->
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@buffer.updateScreen()
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carriageReturn: ->
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@buffer.goToFirstColumn()
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backspace: ->
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@buffer.priorColumn()
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# === ANSI handlers
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# ------ Cursor control
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showCursor: ->
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@trigger 'cursor-visibility', true
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hideCursor: ->
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@trigger 'cursor-visibility', false
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# ----- Scroll control
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reverseIndex: ->
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@buffer.goToPriorRow()
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lineFeed: ->
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@buffer.goToNextRow()
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verticalTab: ->
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@buffer.goToNextRow()
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formFeed: ->
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@buffer.goToNextRow()
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index: ->
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@buffer.goToNextRow()
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newLine: ->
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@buffer.goToNextRowFirstColumn()
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# === Commands
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# ----- Scroll control
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setScrollRegion: (top, bottom) ->
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if top < 1
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top = 1
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if bottom > @lines
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bottom = @lines
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if bottom > top
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@scrollRegion.setTop(top - 1)
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@scrollRegion.setBottom(bottom - 1)
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setHorizontalTabStop: ->
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@tabStops.add(@cursorX)
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# ----- Terminal control
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resetTerminal: ->
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@scrollRegion = new AsciiIo.ScrollRegion(0, @lines - 1)
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@tabStops = new AsciiIo.TabStops(@cols)
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@normalBuffer = new AsciiIo.ScreenBuffer(@cols, @lines, @scrollRegion, @tabStops)
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@alternateBuffer = new AsciiIo.ScreenBuffer(@cols, @lines, @scrollRegion, @tabStops)
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@buffer = @normalBuffer
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@fg = @bg = undefined
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@bright = false
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@underline = false
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@italic = false
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@updateScreen()
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saveTerminalState: ->
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@buffer.saveCursor()
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@scrollRegion.save()
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@buffer.saveBrush()
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restoreTerminalState: ->
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@buffer.restoreBrush()
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@scrollRegion.restore()
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@buffer.restoreCursor()
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reportRowAndColumn: ->
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setUkCharset: ->
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@buffer.setCharset('uk')
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setUsCharset: ->
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@buffer.setCharset('us')
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setSpecialCharset: ->
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@buffer.setCharset('special')
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# ---- new
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print: (text) ->
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@buffer.print text
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insertCharacters: (n) ->
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@buffer.insertCharacters n
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priorRow: (n) ->
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@buffer.priorRow n
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nextRow: (n) ->
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@buffer.nextRow n
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nextColumn: (n) ->
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@buffer.nextColumn n
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priorColumn: (n) ->
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@buffer.priorColumn n
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nextRowFirstColumn: (n) ->
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@buffer.nextRowFirstColumn n
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priorRowFirstColumn: (n) ->
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@buffer.priorRowFirstColumn n
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goToColumn: (n) ->
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@buffer.goToColumn n
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goToRowAndColumn: (n, m) ->
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@buffer.goToRowAndColumn n, m
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goToNextHorizontalTabStop: (n = 1) ->
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@buffer.goToNextHorizontalTabStop n
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eraseScreen: ->
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@buffer.eraseScreen()
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eraseFromScreenStart: ->
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@buffer.eraseFromScreenStart()
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eraseToScreenEnd: ->
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@buffer.eraseToScreenEnd()
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eraseRow: ->
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@buffer.eraseRow()
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eraseFromRowStart: ->
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@buffer.eraseFromRowStart()
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eraseToRowEnd: ->
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@buffer.eraseToRowEnd()
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insertLine: (n) ->
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@buffer.insertLine n
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deleteLine: (n) ->
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@buffer.deleteLine n
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deleteCharacters: (n) ->
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@buffer.deleteCharacters n
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scrollUp: (n) ->
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@buffer.scrollUp n
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scrollDown: (n) ->
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@buffer.scrollDown n
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eraseCharacters: (n) ->
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@buffer.eraseCharacters n
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goToPriorHorizontalTabStop: (n) ->
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@buffer.goToPriorHorizontalTabStop n
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repeatLastCharacter: (n) ->
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@buffer.repeatLastCharacter n
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goToRow: (n) ->
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@buffer.goToRow n
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clearHorizontalTabStop: ->
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@buffer.clearHorizontalTabStop()
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clearAllHorizontalTabStops: ->
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@buffer.clearAllHorizontalTabStops()
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# References:
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# http://en.wikipedia.org/wiki/ANSI_escape_code
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# http://ttssh2.sourceforge.jp/manual/en/about/ctrlseq.html
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# http://real-world-systems.com/docs/ANSIcode.html
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# http://www.shaels.net/index.php/propterm/documents
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# http://manpages.ubuntu.com/manpages/lucid/man7/urxvt.7.html
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# http://vt100.net/docs/vt102-ug/chapter5.html
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