| 21 | |
| 22 | // fallow-ignore-next-line complexity |
| 23 | function parseCssRules(css: string): CssRule[] { |
| 24 | const rules: CssRule[] = []; |
| 25 | let i = 0; |
| 26 | const len = css.length; |
| 27 | while (i < len) { |
| 28 | const braceOpen = css.indexOf("{", i); |
| 29 | if (braceOpen === -1) break; |
| 30 | const selector = css.slice(i, braceOpen).trim(); |
| 31 | if (!selector) { |
| 32 | i = braceOpen + 1; |
| 33 | continue; |
| 34 | } |
| 35 | // skip leading whitespace to get the true selector start |
| 36 | let selStart = i; |
| 37 | while (selStart < braceOpen && " \t\r\n".includes(css[selStart]!)) selStart++; |
| 38 | // find closing }, respecting quoted strings so `content: "}"` doesn't end the rule |
| 39 | let j = braceOpen + 1; |
| 40 | let quote: string | null = null; |
| 41 | while (j < len) { |
| 42 | const ch = css[j]!; |
| 43 | if (quote) { |
| 44 | if (ch === "\\" && j + 1 < len) |
| 45 | j++; // skip escaped char |
| 46 | else if (ch === quote) quote = null; |
| 47 | } else if (ch === '"' || ch === "'") { |
| 48 | quote = ch; |
| 49 | } else if (ch === "}") { |
| 50 | break; |
| 51 | } |
| 52 | j++; |
| 53 | } |
| 54 | rules.push({ selector, body: css.slice(braceOpen + 1, j), start: selStart, end: j + 1 }); |
| 55 | i = j + 1; |
| 56 | } |
| 57 | return rules; |
| 58 | } |
| 59 | |
| 60 | // fallow-ignore-next-line complexity |
| 61 | function parseDeclarations(body: string): Record<string, string> { |