78 lines
2.4 KiB
JavaScript
78 lines
2.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.parseBoxShadowValue = parseBoxShadowValue;
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exports.formatBoxShadowValue = formatBoxShadowValue;
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let KEYWORDS = new Set([
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'inset',
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'inherit',
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'initial',
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'revert',
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'unset'
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]);
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let COMMA = /\,(?![^(]*\))/g // Comma separator that is not located between brackets. E.g.: `cubiz-bezier(a, b, c)` these don't count.
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;
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let SPACE = /\ +(?![^(]*\))/g // Similar to the one above, but with spaces instead.
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;
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let LENGTH = /^-?(\d+)(.*?)$/g;
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function parseBoxShadowValue(input) {
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let shadows = input.split(COMMA);
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return shadows.map((shadow)=>{
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let value = shadow.trim();
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let result = {
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raw: value
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};
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let parts = value.split(SPACE);
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let seen = new Set();
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for (let part of parts){
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// Reset index, since the regex is stateful.
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LENGTH.lastIndex = 0;
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// Keyword
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if (!seen.has('KEYWORD') && KEYWORDS.has(part)) {
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result.keyword = part;
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seen.add('KEYWORD');
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} else if (LENGTH.test(part)) {
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if (!seen.has('X')) {
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result.x = part;
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seen.add('X');
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} else if (!seen.has('Y')) {
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result.y = part;
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seen.add('Y');
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} else if (!seen.has('BLUR')) {
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result.blur = part;
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seen.add('BLUR');
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} else if (!seen.has('SPREAD')) {
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result.spread = part;
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seen.add('SPREAD');
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}
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} else {
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if (!result.color) {
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result.color = part;
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} else {
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if (!result.unknown) result.unknown = [];
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result.unknown.push(part);
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}
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}
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}
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// Check if valid
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result.valid = result.x !== undefined && result.y !== undefined;
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return result;
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});
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}
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function formatBoxShadowValue(shadows) {
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return shadows.map((shadow)=>{
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if (!shadow.valid) {
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return shadow.raw;
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}
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return [
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shadow.keyword,
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shadow.x,
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shadow.y,
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shadow.blur,
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shadow.spread,
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shadow.color
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].filter(Boolean).join(' ');
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}).join(', ');
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}
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