mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-19 13:47:52 +00:00
67 lines
1.1 KiB
CoffeeScript
67 lines
1.1 KiB
CoffeeScript
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windowSize = {}
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updateWindowSize = ->
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size = require('window-size')?.get()
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windowSize.width = size?.width
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windowSize.height = size?.height
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process.stdout.on('resize', updateWindowSize)
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module.exports = (stream = process.stdout) ->
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# make sure we get initial metrics
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updateWindowSize()
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currentWindowSize = ->
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# always return a copy.
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# width/height can be undefined if no TTY.
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width: windowSize.width
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height: windowSize.height
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hideCursor = ->
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stream.write('\u001B[?25l')
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showCursor = ->
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stream.write('\u001B[?25h')
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cursorUp = (rows = 0) ->
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stream.write("\u001B[#{rows}A")
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cursorDown = (rows = 0) ->
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stream.write("\u001B[#{rows}B")
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cursorHidden = ->
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Promise = require('bluebird')
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Promise.try(hideCursor).disposer(showCursor)
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write = (str) ->
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stream.write(str)
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writeLine = (str) ->
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stream.write("#{str}\n")
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clearLine = ->
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stream.write('\u001B[2K\r')
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replaceLine = (str) ->
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clearLine()
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write(str)
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deleteToEnd = ->
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stream.write('\u001b[0J')
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return {
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stream
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currentWindowSize
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hideCursor
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showCursor
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cursorHidden
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cursorUp
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cursorDown
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write
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writeLine
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clearLine
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replaceLine
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deleteToEnd
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}
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