initial commit

main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/qiangxue/fasthttp-routing"
+	"github.com/valyala/fasthttp"
+	"gopkg.in/alecthomas/kingpin.v2"
+)
+
+// Version gets populated with version at build-time.
+var Version string
+var defaultPort = "8080"
+
+var (
+	port = kingpin.Flag("port", "Port to listen to.").Short('p').
+		Default(defaultPort).String()
+	bind = kingpin.Flag("bind", "Bind address.").Short('b').
+		Default("0.0.0.0").String()
+	version = kingpin.Flag("version", "Print version info.").
+		Short('v').Bool()
+)
+
+func indexHandler(c *routing.Context) error {
+	c.Write([]byte(
+		"Case-insensitive string comparison, as an API. Because ¯\\_(ツ)_/¯\n" +
+			"\n" +
+			"Example:\n" +
+			"curl -X POST -F \"a=Foo Bar\" -F \"b=FOO BAR\" " +
+			"http://casecmp.bah.io/",
+	))
+	return nil
+}
+
+func casecmpHandler(c *routing.Context) error {
+	a := c.FormValue("a")
+	b := c.FormValue("b")
+
+	resp := "0"
+	if strings.EqualFold(string(a), string(b)) {
+		resp = "1"
+	}
+
+	c.Write([]byte(resp))
+	return nil
+}
+
+func printVersion() {
+	fmt.Println("casecmp " + Version)
+}
+
+func startServer() {
+	r := routing.New()
+	r.Get("/", indexHandler)
+	r.Post("/", casecmpHandler)
+
+	server := fasthttp.Server{Handler: r.HandleRequest}
+
+	if *port == defaultPort {
+		envPort := os.Getenv("PORT")
+		if envPort != "" {
+			*port = envPort
+		}
+	}
+
+	address := *bind + ":" + *port
+	fmt.Println("Listening on " + address)
+	log.Fatal(server.ListenAndServe(address))
+}
+
+func main() {
+	kingpin.Parse()
+
+	if *version {
+		printVersion()
+	} else {
+		startServer()
+	}
+}