jimeh/casecmp
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Change main vars to be compatible with goreleaser

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And also various smaller cleanup and optimizations.
This commit is contained in:
Jim Myhrberg
2018-05-07 01:39:32 +01:00
parent c16b23b685
commit 15fb686368
2 changed files with 67 additions and 37 deletions
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81
main.go
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@@ -1,8 +1,8 @@
package main
import (
"bytes"
"fmt"
"io"
"log"
"net/http"
"os"
@@ -11,47 +11,57 @@ import (
"gopkg.in/alecthomas/kingpin.v2"
)
// Name of application.
var Name = "casecmp"
// Version gets populated with version at build-time.
var Version string
// DefaultPort that service runs on.
var DefaultPort = "8080"
var (
name = "casecmp"
version = "dev"
commit = "unknown"
date = "unknown"
defaultPort = "8080"
)
// Argument parsing setup.
var (
port = kingpin.Flag("port", "Port to listen to.").Short('p').
Default("").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()
portFlag = kingpin.Flag("port", "Port to listen to.").Short('p').
Default("").String()
bindFlag = kingpin.Flag("bind", "Bind address.").Short('b').
Default("0.0.0.0").String()
versionFlag = kingpin.Flag("version", "Print version info.").
Short('v').Bool()
)
func indexHandler(w http.ResponseWriter, r *http.Request) {
resp := Name + " " + Version + "\n" +
"\n" +
"Case-insensitive string comparison, as an API. Because ¯\\_(ツ)_/¯\n" +
"\n" +
"Example usage:\n" +
"curl -X POST -F \"a=Foo Bar\" -F \"b=FOO BAR\" " +
"http://" + r.Host + "/\n" +
"curl -X POST http://" + r.Host + "/?a=Foo%%20Bar&b=FOO%%20BAR"
scheme := "http"
if r.TLS != nil {
scheme = "https"
}
io.WriteString(w, resp)
_, err := fmt.Fprintf(w, `%s %s
Case-insensitive string comparison, as an API. Because ¯\_(ツ)_/¯
Example usage:
curl -X POST -F "a=Foo Bar" -F "b=FOO BAR" %s://%s/
curl -X POST "%s://%s/?a=Foo+Bar&b=FOO+BAR"`,
name, version, scheme, r.Host, scheme, r.Host)
if err != nil {
log.Fatal(err)
}
}
func casecmpHandler(w http.ResponseWriter, r *http.Request) {
a := r.FormValue("a")
b := r.FormValue("b")
resp := "0"
if strings.EqualFold(string(a), string(b)) {
resp = "1"
}
fmt.Fprintf(w, resp)
_, err := fmt.Fprintf(w, resp)
if err != nil {
log.Fatal(err)
}
}
func rootHandler(w http.ResponseWriter, r *http.Request) {
@@ -68,22 +78,29 @@ func rootHandler(w http.ResponseWriter, r *http.Request) {
}
func printVersion() {
fmt.Println(Name + " " + Version)
var buffer bytes.Buffer
buffer.WriteString(fmt.Sprintf("%s %s", name, version))
if commit != "unknown" {
buffer.WriteString(fmt.Sprintf(" (%s)", commit))
}
fmt.Println(buffer.String())
}
func startServer() {
http.HandleFunc("/", rootHandler)
if *port == "" {
if *portFlag == "" {
envPort := os.Getenv("PORT")
if envPort != "" {
*port = envPort
*portFlag = envPort
} else {
*port = DefaultPort
*portFlag = defaultPort
}
}
address := *bind + ":" + *port
address := *bindFlag + ":" + *portFlag
fmt.Println("Listening on " + address)
log.Fatal(http.ListenAndServe(address, nil))
}
@@ -91,7 +108,7 @@ func startServer() {
func main() {
kingpin.Parse()
if *version {
if *versionFlag {
printVersion()
} else {
startServer()