Update checked-in dependencies
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646
node_modules/cssstyle/lib/parsers.js
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646
node_modules/cssstyle/lib/parsers.js
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/*********************************************************************
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* These are commonly used parsers for CSS Values they take a string *
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* to parse and return a string after it's been converted, if needed *
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********************************************************************/
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'use strict';
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const { resolve: resolveColor, utils } = require('@asamuzakjp/css-color');
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const { cssCalc, isColor, isGradient, splitValue } = utils;
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exports.TYPES = {
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INTEGER: 1,
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NUMBER: 2,
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LENGTH: 3,
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PERCENT: 4,
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URL: 5,
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COLOR: 6,
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STRING: 7,
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ANGLE: 8,
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KEYWORD: 9,
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NULL_OR_EMPTY_STR: 10,
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CALC: 11,
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VAR: 12,
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GRADIENT: 13,
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};
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// regular expressions
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var DIGIT = '(?:0|[1-9]\\d*)';
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var NUMBER = `[+-]?(?:${DIGIT}(?:\\.\\d*)?|\\.\\d+)(?:e-?${DIGIT})?`;
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var integerRegEx = new RegExp(`^[+-]?${DIGIT}$`);
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var numberRegEx = new RegExp(`^${NUMBER}$`);
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var lengthRegEx = new RegExp(
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`^${NUMBER}(?:[cm]m|[dls]?v(?:[bhiw]|max|min)|in|p[ctx]|q|r?(?:[cl]h|cap|e[mx]|ic))$`
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);
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var percentRegEx = new RegExp(`^${NUMBER}%$`);
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var angleRegEx = new RegExp(`^${NUMBER}(?:deg|g?rad|turn)$`);
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var urlRegEx = /^url\(\s*([^)]*)\s*\)$/;
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var stringRegEx = /^("[^"]*"|'[^']*')$/;
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var varRegEx = /^var\(|(?<=[*/\s(])var\(/;
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var calcRegEx =
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/^(?:a?(?:cos|sin|tan)|abs|atan2|calc|clamp|exp|hypot|log|max|min|mod|pow|rem|round|sign|sqrt)\(/;
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// This will return one of the above types based on the passed in string
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exports.valueType = function valueType(val) {
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if (val === '' || val === null) {
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return exports.TYPES.NULL_OR_EMPTY_STR;
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}
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if (typeof val === 'number') {
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val = val.toString();
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}
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if (typeof val !== 'string') {
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return undefined;
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}
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if (integerRegEx.test(val)) {
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return exports.TYPES.INTEGER;
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}
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if (numberRegEx.test(val)) {
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return exports.TYPES.NUMBER;
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}
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if (lengthRegEx.test(val)) {
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return exports.TYPES.LENGTH;
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}
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if (percentRegEx.test(val)) {
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return exports.TYPES.PERCENT;
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}
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if (urlRegEx.test(val)) {
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return exports.TYPES.URL;
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}
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if (varRegEx.test(val)) {
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return exports.TYPES.VAR;
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}
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if (calcRegEx.test(val)) {
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return exports.TYPES.CALC;
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}
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if (stringRegEx.test(val)) {
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return exports.TYPES.STRING;
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}
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if (angleRegEx.test(val)) {
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return exports.TYPES.ANGLE;
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}
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if (isColor(val)) {
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return exports.TYPES.COLOR;
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}
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if (isGradient(val)) {
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return exports.TYPES.GRADIENT;
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}
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switch (val.toLowerCase()) {
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// the following are deprecated in CSS3
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case 'activeborder':
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case 'activecaption':
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case 'appworkspace':
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case 'background':
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case 'buttonface':
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case 'buttonhighlight':
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case 'buttonshadow':
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case 'buttontext':
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case 'captiontext':
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case 'graytext':
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case 'highlight':
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case 'highlighttext':
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case 'inactiveborder':
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case 'inactivecaption':
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case 'inactivecaptiontext':
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case 'infobackground':
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case 'infotext':
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case 'menu':
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case 'menutext':
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case 'scrollbar':
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case 'threeddarkshadow':
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case 'threedface':
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case 'threedhighlight':
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case 'threedlightshadow':
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case 'threedshadow':
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case 'window':
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case 'windowframe':
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case 'windowtext':
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return exports.TYPES.COLOR;
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default:
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return exports.TYPES.KEYWORD;
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}
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};
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exports.parseInteger = function parseInteger(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.INTEGER) {
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return undefined;
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}
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return String(parseInt(val, 10));
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};
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exports.parseNumber = function parseNumber(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.NUMBER && type !== exports.TYPES.INTEGER) {
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return undefined;
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}
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return String(parseFloat(val));
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};
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exports.parseLength = function parseLength(val) {
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if (val === 0 || val === '0') {
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return '0px';
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}
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.LENGTH) {
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return undefined;
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}
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return val;
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};
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exports.parsePercent = function parsePercent(val) {
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if (val === 0 || val === '0') {
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return '0%';
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}
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.PERCENT) {
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return undefined;
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}
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return val;
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};
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// either a length or a percent
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exports.parseMeasurement = function parseMeasurement(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.VAR) {
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return val;
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}
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if (type === exports.TYPES.CALC) {
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return cssCalc(val, {
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format: 'specifiedValue',
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});
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}
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var length = exports.parseLength(val);
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if (length !== undefined) {
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return length;
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}
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return exports.parsePercent(val);
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};
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exports.parseInheritingMeasurement = function parseInheritingMeasurement(v) {
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if (String(v).toLowerCase() === 'auto') {
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return 'auto';
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}
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if (String(v).toLowerCase() === 'inherit') {
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return 'inherit';
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}
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return exports.parseMeasurement(v);
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};
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exports.parseUrl = function parseUrl(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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var res = urlRegEx.exec(val);
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// does it match the regex?
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if (!res) {
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return undefined;
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}
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var str = res[1];
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// if it starts with single or double quotes, does it end with the same?
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if ((str[0] === '"' || str[0] === "'") && str[0] !== str[str.length - 1]) {
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return undefined;
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}
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if (str[0] === '"' || str[0] === "'") {
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str = str.substr(1, str.length - 2);
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}
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var i;
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for (i = 0; i < str.length; i++) {
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switch (str[i]) {
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case '(':
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case ')':
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case ' ':
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case '\t':
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case '\n':
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case "'":
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case '"':
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return undefined;
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case '\\':
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i++;
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break;
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}
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}
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return 'url(' + str + ')';
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};
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exports.parseString = function parseString(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.STRING) {
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return undefined;
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}
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var i;
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for (i = 1; i < val.length - 1; i++) {
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switch (val[i]) {
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case val[0]:
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return undefined;
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case '\\':
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i++;
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while (i < val.length - 1 && /[0-9A-Fa-f]/.test(val[i])) {
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i++;
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}
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break;
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}
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}
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if (i >= val.length) {
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return undefined;
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}
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return val;
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};
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exports.parseColor = function parseColor(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (/^[a-z]+$/i.test(val) && type === exports.TYPES.COLOR) {
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return val;
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}
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var res = resolveColor(val, {
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format: 'specifiedValue',
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});
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if (res) {
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return res;
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}
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return undefined;
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};
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exports.parseAngle = function parseAngle(val) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.ANGLE) {
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return undefined;
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}
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var res = angleRegEx.exec(val);
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var flt = parseFloat(res[1]);
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if (res[2] === 'rad') {
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flt *= 180 / Math.PI;
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} else if (res[2] === 'grad') {
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flt *= 360 / 400;
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}
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while (flt < 0) {
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flt += 360;
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}
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while (flt > 360) {
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flt -= 360;
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}
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return flt + 'deg';
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};
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exports.parseKeyword = function parseKeyword(val, valid_keywords) {
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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return val;
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}
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if (type !== exports.TYPES.KEYWORD) {
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return undefined;
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}
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val = val.toString().toLowerCase();
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var i;
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for (i = 0; i < valid_keywords.length; i++) {
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if (valid_keywords[i].toLowerCase() === val) {
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return valid_keywords[i];
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}
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}
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return undefined;
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};
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exports.parseImage = function parseImage(val) {
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if (/^(?:none|inherit)$/i.test(val)) {
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return val;
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}
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var type = exports.valueType(val);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR || type === exports.TYPES.VAR) {
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return val;
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}
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var values = splitValue(val, ',');
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var isImage = !!values.length;
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var i;
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for (i = 0; i < values.length; i++) {
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var image = values[i];
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var t = exports.valueType(image);
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if (t === exports.TYPES.NULL_OR_EMPTY_STR) {
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return image;
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}
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if (t === exports.TYPES.GRADIENT || /^(?:none|inherit)$/i.test(image)) {
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continue;
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}
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var imageUrl = exports.parseUrl(image);
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if (exports.valueType(imageUrl) === exports.TYPES.URL) {
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values[i] = imageUrl;
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} else {
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isImage = false;
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break;
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}
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}
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if (isImage) {
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return values.join(', ');
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}
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return undefined;
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};
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// utility to translate from border-width to borderWidth
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var dashedToCamelCase = function (dashed) {
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var i;
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var camel = '';
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var nextCap = false;
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for (i = 0; i < dashed.length; i++) {
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if (dashed[i] !== '-') {
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camel += nextCap ? dashed[i].toUpperCase() : dashed[i];
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nextCap = false;
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} else {
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nextCap = true;
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}
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}
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return camel;
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};
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exports.dashedToCamelCase = dashedToCamelCase;
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var is_space = /\s/;
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var opening_deliminators = ['"', "'", '('];
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var closing_deliminators = ['"', "'", ')'];
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// this splits on whitespace, but keeps quoted and parened parts together
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var getParts = function (str) {
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var deliminator_stack = [];
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var length = str.length;
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var i;
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var parts = [];
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var current_part = '';
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var opening_index;
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var closing_index;
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for (i = 0; i < length; i++) {
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opening_index = opening_deliminators.indexOf(str[i]);
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closing_index = closing_deliminators.indexOf(str[i]);
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if (is_space.test(str[i])) {
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if (deliminator_stack.length === 0) {
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if (current_part !== '') {
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parts.push(current_part);
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}
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current_part = '';
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} else {
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current_part += str[i];
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}
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} else {
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if (str[i] === '\\') {
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i++;
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current_part += str[i];
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} else {
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current_part += str[i];
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if (
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closing_index !== -1 &&
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closing_index === deliminator_stack[deliminator_stack.length - 1]
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) {
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deliminator_stack.pop();
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} else if (opening_index !== -1) {
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deliminator_stack.push(opening_index);
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}
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}
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}
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}
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if (current_part !== '') {
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parts.push(current_part);
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}
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return parts;
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};
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/*
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* this either returns undefined meaning that it isn't valid
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* or returns an object where the keys are dashed short
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* hand properties and the values are the values to set
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* on them
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*/
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exports.shorthandParser = function parse(v, shorthand_for) {
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var obj = {};
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var type = exports.valueType(v);
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if (type === exports.TYPES.NULL_OR_EMPTY_STR) {
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Object.keys(shorthand_for).forEach(function (property) {
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obj[property] = '';
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});
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return obj;
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}
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if (typeof v === 'number') {
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v = v.toString();
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}
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if (typeof v !== 'string') {
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return undefined;
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}
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if (v.toLowerCase() === 'inherit') {
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return {};
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}
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var parts = getParts(v);
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var valid = true;
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parts.forEach(function (part, i) {
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var part_valid = false;
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Object.keys(shorthand_for).forEach(function (property) {
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if (shorthand_for[property].isValid(part, i)) {
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part_valid = true;
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obj[property] = part;
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}
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});
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valid = valid && part_valid;
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});
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if (!valid) {
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return undefined;
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}
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return obj;
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};
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exports.shorthandSetter = function (property, shorthand_for) {
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return function (v) {
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var obj = exports.shorthandParser(v, shorthand_for);
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if (obj === undefined) {
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return;
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}
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//console.log('shorthandSetter for:', property, 'obj:', obj);
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Object.keys(obj).forEach(function (subprop) {
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// in case subprop is an implicit property, this will clear
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// *its* subpropertiesX
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var camel = dashedToCamelCase(subprop);
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this[camel] = obj[subprop];
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// in case it gets translated into something else (0 -> 0px)
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obj[subprop] = this[camel];
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this.removeProperty(subprop);
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// don't add in empty properties
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if (obj[subprop] !== '') {
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this._values[subprop] = obj[subprop];
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}
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}, this);
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Object.keys(shorthand_for).forEach(function (subprop) {
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if (!obj.hasOwnProperty(subprop)) {
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this.removeProperty(subprop);
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delete this._values[subprop];
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}
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}, this);
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// in case the value is something like 'none' that removes all values,
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// check that the generated one is not empty, first remove the property
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// if it already exists, then call the shorthandGetter, if it's an empty
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// string, don't set the property
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this.removeProperty(property);
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var calculated = exports.shorthandGetter(property, shorthand_for).call(this);
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if (calculated !== '') {
|
||||
this._setProperty(property, calculated);
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
exports.shorthandGetter = function (property, shorthand_for) {
|
||||
return function () {
|
||||
if (this._values[property] !== undefined) {
|
||||
return this.getPropertyValue(property);
|
||||
}
|
||||
return Object.keys(shorthand_for)
|
||||
.map(function (subprop) {
|
||||
return this.getPropertyValue(subprop);
|
||||
}, this)
|
||||
.filter(function (value) {
|
||||
return value !== '';
|
||||
})
|
||||
.join(' ');
|
||||
};
|
||||
};
|
||||
|
||||
// isValid(){1,4} | inherit
|
||||
// if one, it applies to all
|
||||
// if two, the first applies to the top and bottom, and the second to left and right
|
||||
// if three, the first applies to the top, the second to left and right, the third bottom
|
||||
// if four, top, right, bottom, left
|
||||
exports.implicitSetter = function (property_before, property_after, isValid, parser) {
|
||||
property_after = property_after || '';
|
||||
if (property_after !== '') {
|
||||
property_after = '-' + property_after;
|
||||
}
|
||||
var part_names = ['top', 'right', 'bottom', 'left'];
|
||||
|
||||
return function (v) {
|
||||
if (typeof v === 'number') {
|
||||
v = v.toString();
|
||||
}
|
||||
if (typeof v !== 'string') {
|
||||
return undefined;
|
||||
}
|
||||
var parts;
|
||||
if (v.toLowerCase() === 'inherit' || v === '') {
|
||||
parts = [v];
|
||||
} else {
|
||||
parts = getParts(v);
|
||||
}
|
||||
if (parts.length < 1 || parts.length > 4) {
|
||||
return undefined;
|
||||
}
|
||||
|
||||
if (!parts.every(isValid)) {
|
||||
return undefined;
|
||||
}
|
||||
|
||||
parts = parts.map(function (part) {
|
||||
return parser(part);
|
||||
});
|
||||
this._setProperty(property_before + property_after, parts.join(' '));
|
||||
if (parts.length === 1) {
|
||||
parts[1] = parts[0];
|
||||
}
|
||||
if (parts.length === 2) {
|
||||
parts[2] = parts[0];
|
||||
}
|
||||
if (parts.length === 3) {
|
||||
parts[3] = parts[1];
|
||||
}
|
||||
|
||||
for (var i = 0; i < 4; i++) {
|
||||
var property = property_before + '-' + part_names[i] + property_after;
|
||||
this.removeProperty(property);
|
||||
if (parts[i] !== '') {
|
||||
this._values[property] = parts[i];
|
||||
}
|
||||
}
|
||||
return v;
|
||||
};
|
||||
};
|
||||
|
||||
//
|
||||
// Companion to implicitSetter, but for the individual parts.
|
||||
// This sets the individual value, and checks to see if all four
|
||||
// sub-parts are set. If so, it sets the shorthand version and removes
|
||||
// the individual parts from the cssText.
|
||||
//
|
||||
exports.subImplicitSetter = function (prefix, part, isValid, parser) {
|
||||
var property = prefix + '-' + part;
|
||||
var subparts = [prefix + '-top', prefix + '-right', prefix + '-bottom', prefix + '-left'];
|
||||
|
||||
return function (v) {
|
||||
if (typeof v === 'number') {
|
||||
v = v.toString();
|
||||
}
|
||||
if (v === null) {
|
||||
v = '';
|
||||
}
|
||||
if (typeof v !== 'string') {
|
||||
return undefined;
|
||||
}
|
||||
if (!isValid(v)) {
|
||||
return undefined;
|
||||
}
|
||||
v = parser(v);
|
||||
this._setProperty(property, v);
|
||||
|
||||
var combinedPriority = this.getPropertyPriority(prefix);
|
||||
var parts = subparts.map((subpart) => this._values[subpart]);
|
||||
var priorities = subparts.map((subpart) => this.getPropertyPriority(subpart));
|
||||
// Combine into a single property if all values are set and have the same priority
|
||||
if (
|
||||
parts.every((p) => p !== '' && p != null) &&
|
||||
priorities.every((p) => p === priorities[0]) &&
|
||||
priorities[0] === combinedPriority
|
||||
) {
|
||||
for (var i = 0; i < subparts.length; i++) {
|
||||
this.removeProperty(subparts[i]);
|
||||
this._values[subparts[i]] = parts[i];
|
||||
}
|
||||
this._setProperty(prefix, parts.join(' '), priorities[0]);
|
||||
} else {
|
||||
this.removeProperty(prefix);
|
||||
for (var j = 0; j < subparts.length; j++) {
|
||||
// The property we're setting won't be important, the rest will either keep their priority or inherit it from the combined property
|
||||
var priority = subparts[j] === property ? '' : priorities[j] || combinedPriority;
|
||||
this._setProperty(subparts[j], parts[j], priority);
|
||||
}
|
||||
}
|
||||
return v;
|
||||
};
|
||||
};
|
||||
|
||||
var camel_to_dashed = /[A-Z]/g;
|
||||
var first_segment = /^\([^-]\)-/;
|
||||
var vendor_prefixes = ['o', 'moz', 'ms', 'webkit'];
|
||||
exports.camelToDashed = function (camel_case) {
|
||||
var match;
|
||||
var dashed = camel_case.replace(camel_to_dashed, '-$&').toLowerCase();
|
||||
match = dashed.match(first_segment);
|
||||
if (match && vendor_prefixes.indexOf(match[1]) !== -1) {
|
||||
dashed = '-' + dashed;
|
||||
}
|
||||
return dashed;
|
||||
};
|
||||
Loading…
Add table
Add a link
Reference in a new issue