265 lines
9.2 KiB
JavaScript
265 lines
9.2 KiB
JavaScript
'use strict'
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var config
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var CHAR_COMMENT_REPLACEMENT = '\uFFFD' // <20>
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var CHAR_TOKEN_REPLACEMENT = '\u00A4'// ¤
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var CHAR_TOKEN_START = '\u00AB' // «
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var CHAR_TOKEN_END = '\u00BB' // »
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var REGEX_COMMENT_REPLACEMENT = new RegExp(CHAR_COMMENT_REPLACEMENT, 'ig')
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var REGEX_TOKEN_REPLACEMENT = new RegExp(CHAR_TOKEN_REPLACEMENT, 'ig')
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var PATTERN_NUMBER = '\\-?(\\d*?\\.\\d+|\\d+)'
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var PATTERN_NUMBER_WITH_CALC = '(calc' + CHAR_TOKEN_REPLACEMENT + ')|(' + PATTERN_NUMBER + ')(?!d\\()'
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var PATTERN_TOKEN = CHAR_TOKEN_START + '\\d+:\\d+' + CHAR_TOKEN_END // «offset:index»
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var PATTERN_TOKEN_WITH_NAME = '\\w*?' + CHAR_TOKEN_START + '\\d+:\\d+' + CHAR_TOKEN_END // «offset:index»
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var REGEX_COMMENT = /\/\*[^]*?\*\//igm // none-greedy
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var REGEX_DIRECTIVE = /\/\*(?:!)?rtl:[^]*?\*\//img
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var REGEX_ESCAPE = /[.*+?^${}()|[\]\\]/g
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var REGEX_FUNCTION = /\([^\(\)]+\)/i
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var REGEX_HEX_COLOR = /#[a-f0-9]{3,6}/ig
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var REGEX_CALC = /calc/
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var REGEX_TOKENS = new RegExp(PATTERN_TOKEN, 'ig')
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var REGEX_TOKENS_WITH_NAME = new RegExp(PATTERN_TOKEN_WITH_NAME, 'ig')
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var REGEX_COMPLEMENT = new RegExp(PATTERN_NUMBER_WITH_CALC, 'i')
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var REGEX_NEGATE_ALL = new RegExp(PATTERN_NUMBER_WITH_CALC, 'ig')
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var REGEX_NEGATE_ONE = new RegExp(PATTERN_NUMBER_WITH_CALC, 'i')
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var DEFAULT_STRING_MAP_OPTIONS = { scope: '*', ignoreCase: true }
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var TOKEN_ID = 0
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function compare (what, to, ignoreCase) {
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if (ignoreCase) {
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return what.toLowerCase() === to.toLowerCase()
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}
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return what === to
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}
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function escapeRegExp (string) {
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return string.replace(REGEX_ESCAPE, '\\$&')
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}
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module.exports = {
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extend: function (dest, src) {
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if (typeof dest === 'undefined' || typeof dest !== 'object') {
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dest = {}
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}
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for (var prop in src) {
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if (!dest.hasOwnProperty(prop)) {
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dest[prop] = src[prop]
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}
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}
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return dest
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},
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swap: function (value, a, b, options) {
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var expr = escapeRegExp(a) + '|' + escapeRegExp(b)
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options = options || DEFAULT_STRING_MAP_OPTIONS
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var greedy = options.hasOwnProperty('greedy') ? options.greedy : config.greedy
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if (!greedy) {
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expr = '\\b(' + expr + ')\\b'
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}
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var flags = options.ignoreCase ? 'img' : 'mg'
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return value.replace(new RegExp(expr, flags), function (m) { return compare(m, a, options.ignoreCase) ? b : a })
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},
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swapLeftRight: function (value) {
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return this.swap(value, 'left', 'right')
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},
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swapLtrRtl: function (value) {
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return this.swap(value, 'ltr', 'rtl')
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},
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applyStringMap: function (value, isUrl) {
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var result = value
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for (var x = 0; x < config.stringMap.length; x++) {
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var map = config.stringMap[x]
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var options = this.extend(map.options, DEFAULT_STRING_MAP_OPTIONS)
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if (options.scope === '*' || (isUrl && options.scope === 'url') || (!isUrl && options.scope === 'selector')) {
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if (Array.isArray(map.search) && Array.isArray(map.replace)) {
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for (var mapIndex = 0; mapIndex < map.search.length; mapIndex++) {
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result = this.swap(result, map.search[mapIndex], map.replace[mapIndex % map.search.length], options)
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}
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} else {
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result = this.swap(result, map.search, map.replace, options)
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}
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if (map.exclusive === true) {
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break
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}
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}
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}
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return result
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},
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negate: function (value) {
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var state = this.saveTokens(value)
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state.value = state.value.replace(REGEX_NEGATE_ONE, function (num) {
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return REGEX_TOKEN_REPLACEMENT.test(num) ? num.replace(REGEX_TOKEN_REPLACEMENT, function (m) { return '(-1*' + m + ')' }) : parseFloat(num, 10) * -1
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})
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return this.restoreTokens(state)
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},
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negateAll: function (value) {
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var state = this.saveTokens(value)
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state.value = state.value.replace(REGEX_NEGATE_ALL, function (num) {
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return REGEX_TOKEN_REPLACEMENT.test(num) ? num.replace(REGEX_TOKEN_REPLACEMENT, function (m) { return '(-1*' + m + ')' }) : parseFloat(num, 10) * -1
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})
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return this.restoreTokens(state)
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},
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complement: function (value) {
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var state = this.saveTokens(value)
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state.value = state.value.replace(REGEX_COMPLEMENT, function (num) {
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return REGEX_TOKEN_REPLACEMENT.test(num) ? num.replace(REGEX_TOKEN_REPLACEMENT, function (m) { return '(100% - ' + m + ')' }) : 100 - parseFloat(num, 10)
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})
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return this.restoreTokens(state)
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},
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save: function (what, who, replacement, restorer, exclude) {
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var state = {
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value: who,
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store: [],
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replacement: replacement,
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restorer: restorer
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}
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state.value = state.value.replace(what, function (c) {
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if (exclude && c.match(exclude)) {
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return c
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} else {
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state.store.push(c); return state.replacement
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}
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})
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return state
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},
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restore: function (state) {
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var index = 0
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var result = state.value.replace(state.restorer, function () {
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return state.store[index++]
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})
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state.store.length = 0
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return result
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},
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saveComments: function (value) {
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return this.save(REGEX_COMMENT, value, CHAR_COMMENT_REPLACEMENT, REGEX_COMMENT_REPLACEMENT)
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},
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restoreComments: function (state) {
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return this.restore(state)
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},
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saveTokens: function (value, excludeCalc) {
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return excludeCalc === true
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? this.save(REGEX_TOKENS_WITH_NAME, value, CHAR_TOKEN_REPLACEMENT, REGEX_TOKEN_REPLACEMENT, REGEX_CALC)
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: this.save(REGEX_TOKENS, value, CHAR_TOKEN_REPLACEMENT, REGEX_TOKEN_REPLACEMENT)
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},
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restoreTokens: function (state) {
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return this.restore(state)
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},
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guard: function (what, who, indexed) {
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var state = {
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value: who,
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store: [],
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offset: TOKEN_ID++,
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token: CHAR_TOKEN_START + TOKEN_ID,
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indexed: indexed === true
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}
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if (state.indexed === true) {
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while (what.test(state.value)) {
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state.value = state.value.replace(what, function (m) { state.store.push(m); return state.token + ':' + state.store.length + CHAR_TOKEN_END })
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}
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} else {
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state.value = state.value.replace(what, function (m) { state.store.push(m); return state.token + CHAR_TOKEN_END })
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}
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return state
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},
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unguard: function (state, callback) {
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if (state.indexed === true) {
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var detokenizer = new RegExp('(\\w*?)' + state.token + ':(\\d+)' + CHAR_TOKEN_END, 'i')
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while (detokenizer.test(state.value)) {
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state.value = state.value.replace(detokenizer, function (match, name, index) {
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var value = state.store[index - 1]
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if (typeof callback === 'function') {
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return name + callback(value, name)
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}
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return name + value
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})
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}
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return state.value
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} else {
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return state.value.replace(new RegExp('(\\w*?)' + state.token + CHAR_TOKEN_END, 'i'), function (match, name) {
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var value = state.store.shift()
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if (typeof callback === 'function') {
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return name + callback(value, name)
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}
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return name + value
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})
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}
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},
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guardHexColors: function (value) {
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return this.guard(REGEX_HEX_COLOR, value, true)
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},
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unguardHexColors: function (state, callback) {
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return this.unguard(state, callback)
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},
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guardFunctions: function (value) {
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return this.guard(REGEX_FUNCTION, value, true)
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},
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unguardFunctions: function (state, callback) {
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return this.unguard(state, callback)
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},
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trimDirective: function (value) {
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return value.replace(REGEX_DIRECTIVE, '')
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},
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regexCache: {},
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regexDirective: function (name) {
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// /(?:\/\*(?:!)?rtl:ignore(?::)?)([^]*?)(?:\*\/)/img
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this.regexCache[name] = this.regexCache[name] || new RegExp('(?:\\/\\*(?:!)?rtl:' + (name ? escapeRegExp(name) + '(?::)?' : '') + ')([^]*?)(?:\\*\\/)', 'img')
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return this.regexCache[name]
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},
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regex: function (what, options) {
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what = what || []
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var expression = ''
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for (var x = 0; x < what.length; x++) {
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switch (what[x]) {
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case 'percent':
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expression += '|(' + PATTERN_NUMBER + '%)'
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break
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case 'length':
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expression += '|(' + PATTERN_NUMBER + ')(?:ex|ch|r?em|vh|vw|vmin|vmax|px|mm|cm|in|pt|pc)?'
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break
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case 'number':
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expression += '|(' + PATTERN_NUMBER + ')'
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break
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case 'position':
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expression += '|(left|center|right|top|bottom)'
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break
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case 'calc':
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expression += '|(calc' + PATTERN_TOKEN + ')'
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break
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}
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}
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return new RegExp(expression.slice(1), options)
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},
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isLastOfType: function (node) {
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var isLast = true
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var next = node.next()
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while (next) {
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if (next && next.type === node.type) {
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isLast = false
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break
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}
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next = next.next()
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}
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return isLast
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},
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/**
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* Simple breakable each: returning false in the callback will break the loop
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* returns false if the loop was broken, otherwise true
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*/
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each: function (array, callback) {
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for (var len = 0; len < array.length; len++) {
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if (callback(array[len]) === false) {
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return false
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}
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}
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return true
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}
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}
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module.exports.configure = function (configuration) {
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config = configuration
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return this
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}
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