happy-dom
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
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JavaScript
const SPLIT_BY_COMMA_REGEXP = /[,()]/gm;
const SPLIT_BY_SPACE_REGEXP = /[()]|\s+/gm;
/**
* Style declaration value parser.
*/
export default class CSSStyleDeclarationValueUtility {
/**
* Splits by comma while respecting nested parentheses.
*
* @param value Value to split.
* @returns Array of parts.
*/
static splitByComma(value) {
const parts = [];
const regexp = new RegExp(SPLIT_BY_COMMA_REGEXP);
let match;
let depth = 0;
let lastIndex = 0;
while ((match = regexp.exec(value))) {
switch (match[0]) {
case '(':
depth++;
break;
case ')':
depth--;
break;
case ',':
if (depth === 0) {
const part = value.substring(lastIndex, match.index).trim();
if (part) {
parts.push(part);
}
lastIndex = regexp.lastIndex;
}
break;
}
}
if (lastIndex < value.length) {
parts.push(value.substring(lastIndex).trim());
}
return parts;
}
/**
* Splits by space while respecting nested parentheses.
*
* @param value Value to split.
* @returns Array of parts.
*/
static splitBySpace(value) {
const parts = [];
const regexp = new RegExp(SPLIT_BY_SPACE_REGEXP);
let match;
let depth = 0;
let lastIndex = 0;
while ((match = regexp.exec(value))) {
switch (match[0]) {
case '(':
depth++;
break;
case ')':
depth--;
break;
default:
if (depth === 0) {
const part = value.substring(lastIndex, match.index).trim();
if (part) {
parts.push(part);
}
lastIndex = regexp.lastIndex;
}
break;
}
}
if (lastIndex < value.length) {
const part = value.substring(lastIndex).trim();
if (part) {
parts.push(part);
}
}
return parts;
}
}
//# sourceMappingURL=CSSStyleDeclarationValueUtility.js.map