48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
/*
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* CSIHelper, or "Control Sequence Introducer Helper" is the translator of actions into
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* sequence of ANSI characters that will trigger some action in the Terminal.
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*
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* Note: CSI is not from the TV Series.
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*
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* More info:
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* - https://en.wikipedia.org/wiki/ANSI_escape_code
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* - http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x361.html
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* - http://ascii-table.com/ansi-escape-sequences-vt-100.php
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*/
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var CSIHelper = module.exports = {}
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const ESC = CSIHelper.ESC = '\u001b'
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/*
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* Save current cursor position
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*/
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CSIHelper.save = function save() {
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return '\u001b7'
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}
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/*
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* Restore cursor position
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*/
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CSIHelper.restore = function restore() {
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return '\u001b8'
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}
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/*
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* Move cursor up `n` lines. Default is 1
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*/
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CSIHelper.up = function up(n) {
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n = typeof n === 'number' ? n : 1
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return n > 0 ? ESC + '[' + n + 'A' : ''
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}
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/*
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* Move cursor down `n` lines. Default is 1
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*/
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CSIHelper.down = function down(n) {
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n = typeof n === 'number' ? n : 1
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return n > 0 ? ESC + '[' + n + 'B' : ''
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}
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CSIHelper.clearLine = function clearLine() {
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return ESC + '[2K' + ESC + '[1G'
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} |