Replace Gorilla Mux with net/http router

go.mod

@@ -1,8 +1,5 @@
 module idicon
 
-go 1.20
+go 1.22
 
-require (
-	github.com/BurntSushi/toml v1.4.0
-	github.com/gorilla/mux v1.8.1
-)
+require github.com/BurntSushi/toml v1.4.0

go.sum

@@ -1,4 +1,2 @@
 github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
 github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
-github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
-github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=

idicon.go

@@ -5,7 +5,6 @@ import (
 	"flag"
 	"fmt"
 	"github.com/BurntSushi/toml"
-	"github.com/gorilla/mux"
 	"idicon/icons"
 	"image/gif"
 	"image/jpeg"
@@ -26,7 +25,7 @@ func pageRequestHandler(w http.ResponseWriter, _ *http.Request) {
 }
 
 func requestHandler(w http.ResponseWriter, r *http.Request) {
-	id := mux.Vars(r)["id"]
+	id := r.PathValue("id")
 
 	size, err := strconv.Atoi(r.URL.Query().Get("s"))
 	if err != nil {
@@ -135,9 +134,9 @@ func main() {
 
 	configure(*configFile)
 
-	router := mux.NewRouter()
-	router.HandleFunc("/avatar", pageRequestHandler)
-	router.HandleFunc("/avatar/{id}", requestHandler)
+	router := http.NewServeMux()
+	router.HandleFunc("GET /avatar", pageRequestHandler)
+	router.HandleFunc("GET /avatar/{id}", requestHandler)
 	log.Printf("Starting on port %d ...\n", *port)
 	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *port), router))
 }

idicon_test.go

@@ -7,8 +7,6 @@ import (
 	"os"
 	"reflect"
 	"testing"
-
-	"github.com/gorilla/mux"
 )
 
 //go:embed testdata/1a79a4d60de6718e8e5b326e338ae533_v1.png
@@ -26,8 +24,8 @@ var gh2 []byte
 //go:embed testdata/1a79a4d60de6718e8e5b326e338ae533_s40.png
 var s40 []byte
 
-func testRouter() *mux.Router {
-	router := mux.NewRouter()
+func testRouter() *http.ServeMux {
+	router := http.NewServeMux()
 	router.HandleFunc("/avatar/{id}", requestHandler)
 	return router
 }