refactoring

server/router.go

@@ -0,0 +1,42 @@
+package server
+
+import (
+	"net/http"
+	"regexp"
+)
+
+type Route struct {
+	url      string
+	urlRegex *regexp.Regexp
+	handler  func(http.ResponseWriter, *http.Request)
+}
+
+func p(path string, handler func(http.ResponseWriter, *http.Request)) Route {
+	var urlRegexp string
+	urlRegexp = regexp.MustCompile(`[\*\:]\w+`).ReplaceAllStringFunc(path, func(m string) string {
+		if m[0:1] == `*` {
+			return "(?P<" + m[1:] + ">.+)"
+		}
+		return "(?P<" + m[1:] + ">[^/]+)"
+	})
+	urlRegexp = "^" + urlRegexp + "$"
+	return Route{
+		url:      path,
+		urlRegex: regexp.MustCompile(urlRegexp),
+		handler:  handler,
+	}
+}
+
+func getRoute(req *http.Request) (*Route, map[string]string) {
+	vars := make(map[string]string)
+	for _, route := range routes {
+		if route.urlRegex.MatchString(req.URL.Path) {
+			matches := route.urlRegex.FindStringSubmatchIndex(req.URL.Path)
+			for i, key := range route.urlRegex.SubexpNames()[1:] {
+				vars[key] = req.URL.Path[matches[i*2+2]:matches[i*2+3]]
+			}
+			return &route, vars
+		}
+	}
+	return nil, nil
+}