generated from sapphiredev/sapphire-template
/
RouteData.ts
74 lines (61 loc) · 1.77 KB
/
RouteData.ts
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const [slash, colon]: [number, number] = [47, 58];
/**
* @since 1.0.0
*/
export const enum TypeState {
/**
* @since 1.0.0
*/
Static,
/**
* @since 1.0.0
*/
Dynamic
}
export type MatchData = Record<string, string> | null;
export class RouteData {
public readonly path: string;
private readonly static: boolean;
private readonly parts: readonly ParsedPart[];
public constructor(path: string) {
this.path = path;
this.parts = RouteData.split(path).map(RouteData.parsePart.bind(null));
this.static = this.parts.every((part) => part.type === TypeState.Static);
}
public match(split: readonly string[]): MatchData {
if (split.length !== this.parts.length) return null;
if (this.static) return this.parts.every((part, index) => part.value === split[index]) ? {} : null;
const parameters: [string, string][] = [];
for (let i = 0; i < this.parts.length; ++i) {
const part = this.parts[i];
const value = split[i];
if (part.type === TypeState.Static) {
if (part.value === value) continue;
return null;
}
parameters.push([part.value, value]);
}
return Object.fromEntries(parameters);
}
/**
* @since 1.0.0
*/
private static parsePart(value: string): ParsedPart {
const type = value.charCodeAt(0) === colon ? TypeState.Dynamic : TypeState.Static;
if (type === TypeState.Dynamic) value = value.substring(1);
return { value, type };
}
/**
* @since 1.0.0
*/
private static split(url: string): string[] {
if (url.length === 1 && url.charCodeAt(0) === slash) return [''];
if (url.charCodeAt(0) === slash) url = url.substring(1);
if (url.length > 0 && url.charCodeAt(url.length - 1) === slash) url = url.substring(0, url.length - 1);
return url.split('/');
}
}
export interface ParsedPart {
value: string;
type: TypeState;
}