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'use strict'
module.exports = ansiHTML
// Reference to https://github.com/sindresorhus/ansi-regex
var _regANSI = /(?:(?:\u001b\[)|\u009b)(?:(?:[0-9]{1,3})?(?:(?:;[0-9]{0,3})*)?[A-M|f-m])|\u001b[A-M]/
var _defColors = { reset: ['fff', '000'], // [FOREGROUD_COLOR, BACKGROUND_COLOR]
black: '000', red: 'ff0000', green: '209805', yellow: 'e8bf03', blue: '0000ff', magenta: 'ff00ff', cyan: '00ffee', lightgrey: 'f0f0f0', darkgrey: '888' } var _styles = { 30: 'black', 31: 'red', 32: 'green', 33: 'yellow', 34: 'blue', 35: 'magenta', 36: 'cyan', 37: 'lightgrey' } var _openTags = { '1': 'font-weight:bold', // bold
'2': 'opacity:0.5', // dim
'3': '<i>', // italic
'4': '<u>', // underscore
'8': 'display:none', // hidden
'9': '<del>' // delete
} var _closeTags = { '23': '</i>', // reset italic
'24': '</u>', // reset underscore
'29': '</del>' // reset delete
}
;[0, 21, 22, 27, 28, 39, 49].forEach(function (n) { _closeTags[n] = '</span>' })
/** * Converts text with ANSI color codes to HTML markup. * @param {String} text * @returns {*} */ function ansiHTML (text) { // Returns the text if the string has no ANSI escape code.
if (!_regANSI.test(text)) { return text }
// Cache opened sequence.
var ansiCodes = [] // Replace with markup.
var ret = text.replace(/\033\[(\d+)m/g, function (match, seq) { var ot = _openTags[seq] if (ot) { // If current sequence has been opened, close it.
if (!!~ansiCodes.indexOf(seq)) { // eslint-disable-line no-extra-boolean-cast
ansiCodes.pop() return '</span>' } // Open tag.
ansiCodes.push(seq) return ot[0] === '<' ? ot : '<span style="' + ot + ';">' }
var ct = _closeTags[seq] if (ct) { // Pop sequence
ansiCodes.pop() return ct } return '' })
// Make sure tags are closed.
var l = ansiCodes.length ;(l > 0) && (ret += Array(l + 1).join('</span>'))
return ret }
/** * Customize colors. * @param {Object} colors reference to _defColors */ ansiHTML.setColors = function (colors) { if (typeof colors !== 'object') { throw new Error('`colors` parameter must be an Object.') }
var _finalColors = {} for (var key in _defColors) { var hex = colors.hasOwnProperty(key) ? colors[key] : null if (!hex) { _finalColors[key] = _defColors[key] continue } if ('reset' === key) { if (typeof hex === 'string') { hex = [hex] } if (!Array.isArray(hex) || hex.length === 0 || hex.some(function (h) { return typeof h !== 'string' })) { throw new Error('The value of `' + key + '` property must be an Array and each item could only be a hex string, e.g.: FF0000') } var defHexColor = _defColors[key] if (!hex[0]) { hex[0] = defHexColor[0] } if (hex.length === 1 || !hex[1]) { hex = [hex[0]] hex.push(defHexColor[1]) }
hex = hex.slice(0, 2) } else if (typeof hex !== 'string') { throw new Error('The value of `' + key + '` property must be a hex string, e.g.: FF0000') } _finalColors[key] = hex } _setTags(_finalColors) }
/** * Reset colors. */ ansiHTML.reset = function () { _setTags(_defColors) }
/** * Expose tags, including open and close. * @type {Object} */ ansiHTML.tags = {}
if (Object.defineProperty) { Object.defineProperty(ansiHTML.tags, 'open', { get: function () { return _openTags } }) Object.defineProperty(ansiHTML.tags, 'close', { get: function () { return _closeTags } }) } else { ansiHTML.tags.open = _openTags ansiHTML.tags.close = _closeTags }
function _setTags (colors) { // reset all
_openTags['0'] = 'font-weight:normal;opacity:1;color:#' + colors.reset[0] + ';background:#' + colors.reset[1] // inverse
_openTags['7'] = 'color:#' + colors.reset[1] + ';background:#' + colors.reset[0] // dark grey
_openTags['90'] = 'color:#' + colors.darkgrey
for (var code in _styles) { var color = _styles[code] var oriColor = colors[color] || '000' _openTags[code] = 'color:#' + oriColor code = parseInt(code) _openTags[(code + 10).toString()] = 'background:#' + oriColor } }
ansiHTML.reset()
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