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