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feat: use Go 1.24 and a net/http ServeMux for routing #19

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Merged
jimeh merged 1 commit into from
Mar 16, 2025
Merged

feat: use Go 1.24 and a net/http ServeMux for routing #19

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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
NAME = casecmp
BINARY = bin/${NAME}
VERSION ?= $(shell cat VERSION)
VERSION ?= $(shell git describe --tags)
SOURCES = $(shell find . -name '*.go' -o -name 'Makefile')

$(BINARY): $(SOURCES)
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2 changes: 1 addition & 1 deletion go.mod
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
module github.com/jimeh/casecmp

go 1.20
go 1.24
76 changes: 39 additions & 37 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,11 @@ curl -X POST -H "Content-Type: application/json" -d '{"a":"Foo Bar","b":"FOO BAR
`))

func indexHandler(w http.ResponseWriter, r *http.Request) {
if r.Method != "GET" || r.URL.RawQuery != "" {
casecmpHandler(w, r)
return
}

scheme := "http"
if r.TLS != nil || *forceHTTPSFlag {
scheme = "https"
Expand Down Expand Up @@ -89,20 +94,44 @@ type JSONData struct {
B string `json:"b"`
}

func casecmpHandler(w http.ResponseWriter, r *http.Request) error {
func casecmpHandler(w http.ResponseWriter, r *http.Request) {
equal, err := casecmp(r)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
_, _ = fmt.Fprint(w, err.Error())
return
}

resp := "0"
if equal {
resp = "1"
}

accept := r.Header.Get("Accept")
if strings.Contains(accept, "application/json") {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
_, _ = fmt.Fprintf(w, `{"result":%s}`, resp)

return
}

_, _ = fmt.Fprint(w, resp)
}

func casecmp(r *http.Request) (bool, error) {
var a, b string

contentType := r.Header.Get("Content-Type")
if strings.Contains(contentType, "application/json") {
body, err := io.ReadAll(r.Body)
if err != nil {
return err
return false, err
}

d := JSONData{}
err = json.Unmarshal(body, &d)
if err != nil {
return err
return false, fmt.Errorf("invalid JSON request: %w", err)
}

a = d.A
Expand All @@ -112,39 +141,7 @@ func casecmpHandler(w http.ResponseWriter, r *http.Request) error {
b = r.FormValue("b")
}

resp := "0"
if strings.EqualFold(string(a), string(b)) {
resp = "1"
}

accept := r.Header.Get("Accept")
if strings.Contains(accept, "application/json") {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
_, err := fmt.Fprintf(w, `{"result":%s}`, resp)
return err
}

_, err := fmt.Fprint(w, resp)
return err
}

func handler(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/":
if r.Method != "GET" || r.URL.RawQuery != "" {
err := casecmpHandler(w, r)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
_, _ = fmt.Fprint(w, err.Error())
}
return
}
indexHandler(w, r)
case "/about":
aboutHandler(w, r)
default:
http.NotFound(w, r)
}
return strings.EqualFold(string(a), string(b)), nil
}

func printVersion() {
Expand Down Expand Up @@ -184,14 +181,19 @@ func startServer() error {
*forceHTTPSFlag = true
}

mux := http.NewServeMux()
mux.HandleFunc("/{$}", indexHandler)
mux.HandleFunc("/about", aboutHandler)
mux.HandleFunc("/about/{$}", aboutHandler)

address := fmt.Sprintf("%s:%d", *bindFlag, *portFlag)
fmt.Printf("Listening on %s\n", address)

srv := &http.Server{
ReadTimeout: 5 * time.Second,
WriteTimeout: 5 * time.Second,
IdleTimeout: 30 * time.Second,
Handler: http.HandlerFunc(handler),
Handler: mux,
Addr: address,
}

Expand Down
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