Add support for regex matching routes

lib/src/http/routing/RegExRoute.ts

@@ -0,0 +1,57 @@
+import {Route, RouteParameters} from './Route.ts'
+import {Logging} from '../../service/logging/Logging.ts'
+import {make} from '../../../../di/src/global.ts'
+
+export class RegExRoute extends Route {
+    protected key_regex: RegExp
+
+    constructor(
+        protected base: string,
+        protected key: string,
+    ) {
+        super(base)
+        this.key_regex = this.build_regex(key)
+    }
+
+    public get route() {
+        return this.base + this.key
+    }
+
+    public match(incoming: string): boolean {
+        if ( !incoming.toLowerCase().startsWith(this.base) ) return false
+        incoming = incoming.substr(this.base.length)
+
+        const success = this.key_regex.test(incoming)
+
+        if ( !success ) {
+            make(Logging).debug(`RegExRoute match failed. (Testing: ${incoming}, Key: ${this.key}, Rex: ${this.key_regex})`)
+        }
+
+        return success
+    }
+
+    public build_parameters(incoming: string): RouteParameters {
+        if ( incoming.toLowerCase().startsWith(this.base) ) incoming = incoming.substr(this.base.length)
+
+        const results = this.key_regex.exec(incoming.toLowerCase())
+        if ( !results ) return {}
+
+        const [match, ...wildcards] = results
+        const params: RouteParameters = {}
+        let current_wildcard: number = 1
+
+        for ( const wild of wildcards ) {
+            params[`$${current_wildcard}`] = wild
+            current_wildcard += 1
+        }
+
+        return params
+    }
+
+    protected build_regex(key: string) {
+        if ( !key.startsWith('rex ') ) {
+            throw new TypeError(`Invalid regular expression route pattern: ${key}`)
+        }
+        return new RegExp(key.substr(4))
+    }
+}