fix router

src/router/match.go

@@ -0,0 +1,24 @@
+package router
+
+import "regexp"
+
+func regexGroups(input string, regex *regexp.Regexp) map[string]string {
+	groups := make(map[string]string)
+	matches := regex.FindStringSubmatchIndex(input)
+	for i, key := range regex.SubexpNames()[1:] {
+		groups[key] = input[matches[i*2+2]:matches[i*2+3]]
+	}
+	return groups
+}
+
+func routeRegexp(route string) *regexp.Regexp {
+	chunks := regexp.MustCompile(`[\*\:]\w+`)
+	output := chunks.ReplaceAllStringFunc(route, func(m string) string {
+		if m[0:1] == `*` {
+			return "(?P<" + m[1:] + ">.+)"
+		}
+		return "(?P<" + m[1:] + ">[^/]+)"
+	})
+	output = "^" + output + "$"
+	return regexp.MustCompile(output)
+}