27 lines
1004 B
TypeScript
27 lines
1004 B
TypeScript
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import { isAbsolute, relative, sep } from "node:path";
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export const withinRoot = (root: string, path: string): boolean => {
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const value = relative(root, path);
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return (
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value === "" ||
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(value !== ".." && !value.startsWith(`..${sep}`) && !isAbsolute(value))
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);
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};
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export const pathFromRoot = (root: string, path: string): string => {
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const value = relative(root, path);
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return withinRoot(root, path)
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? value.split(sep).join("/") || "."
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: "<outside-root>";
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};
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export const compareNames = (left: string, right: string): number => {
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const leftPoints = [...left].map((value) => value.codePointAt(0) ?? 0);
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const rightPoints = [...right].map((value) => value.codePointAt(0) ?? 0);
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const length = Math.min(leftPoints.length, rightPoints.length);
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for (let index = 0; index < length; index += 1) {
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const difference = (leftPoints[index] ?? 0) - (rightPoints[index] ?? 0);
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if (difference !== 0) return difference;
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}
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return leftPoints.length - rightPoints.length;
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};
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