feat: add qrcode output

README.md

@@ -32,4 +32,16 @@ Transfer and browse files as simple as possiable via HTTP. Supported Windows, Li
     b. open on port 8080:
 
         > simplefileserver.exe 8080
-        $ ./simplefileserver 8080
+        $ ./simplefileserver 8080
+
+4. [New Option] Show the url qrcode in the terminal.(Windows default window not support now)
+
+    a. output all local ip addr qrcode:
+
+        > simplefileserver.exe qr
+        $ ./simplefileserver qr
+
+    b. output local ip addr qrcode with special key(eg: just output ip addr contains 192 once)
+
+        > simplefileserver.exe qr192
+        $ ./simplefileserver qr192     

simplefileserver.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"strconv"
 	"net"
+	"github.com/mdp/qrterminal"
 )
 
 var staticPath = "/static/"
@@ -38,14 +39,11 @@ func getCurrentDirectory() string {
 func home(w http.ResponseWriter, r *http.Request) {
 	currentPath := getCurrentDirectory()
 	fmt.Fprintf(w, "<h1>Files in [%s]</h1></br></br></br>", currentPath)
-	filenames := listDir(currentPath)
-	for _, filename := range filenames {
+	fileNames := listDir(currentPath)
+	for _, filename := range fileNames {
 		fmt.Fprintf(w, "<a href=\"%s%s\">%s</a></br>", staticPath, string(filename), string(filename))
 	}
 	fmt.Fprintf(w, "</br></br></br>See the new version of SimpleFileServer :<a href=\"%s\">%s</a>", repoUrl, repoUrl)
-	//if len(filenames)<1{
-	//	fmt.Fprintln(w,"no file in this directory")
-	//}
 }
 
 func getLocalIPs() []string {
@@ -66,24 +64,59 @@ func getLocalIPs() []string {
 }
 
 func entry() {
-	port := "80"
+	var defaultPort = "80"
+	port := defaultPort
+	showQRCode := false
+	const qr = "qr"
+	showQRCodeIpFilter := qr
 	if len(os.Args) > 1 {
 		tmpPort, err := strconv.Atoi(os.Args[1])
 		if err != nil {
-			log.Println("http port must a num, eg: simplefileserver.exe 80")
+			log.Println("http port must a num, eg: simplefileserver.exe 8080")
 			log.Println("use defualut http port:" + port)
 		} else {
 			port = strconv.Itoa(tmpPort)
 		}
+		//check qr
+		for _, arg := range os.Args {
+			if strings.Contains(arg, qr) {
+				showQRCode = true
+				showQRCodeIpFilter = arg
+				break
+			}
+		}
 	}
+
 	http.HandleFunc("/", home)
 	http.HandleFunc(staticPath, func(w http.ResponseWriter, r *http.Request) {
 		log.Println(r.URL.Path)
 		http.ServeFile(w, r, r.URL.Path[len(staticPath):])
 	})
-	log.Println("starttd file server http://127.0.0.1:" + port)
+	var startEcho = "started file server http://127.0.0.1"
+	if port != defaultPort {
+		startEcho = fmt.Sprintf("%s:%s", startEcho, port)
+	}
+	log.Println(startEcho)
+	var optPreAddr = "Optional addr: http://"
 	for _, localIp := range getLocalIPs() {
-		log.Println("Optional addr: http://" + localIp + ":" + port)
+		urlAddr := fmt.Sprintf("%s%s", optPreAddr, localIp)
+		if port != defaultPort {
+			urlAddr = fmt.Sprintf("%s:%s", urlAddr, port)
+		}
+		log.Println(urlAddr)
+		if showQRCode {
+			if showQRCodeIpFilter != qr {
+				if strings.Contains(urlAddr, strings.Replace(showQRCodeIpFilter, qr, "", -1)) {
+					qrterminal.Generate(urlAddr, qrterminal.L, os.Stdout)
+					fmt.Println()
+					break
+				}
+			} else {
+				qrterminal.Generate(urlAddr, qrterminal.L, os.Stdout)
+				fmt.Println()
+			}
+		}
+
 	}
 	log.Fatal(http.ListenAndServe(":"+port, nil))
 }