From 8465f6cfdb1136338277933d33483233dfe6f556 Mon Sep 17 00:00:00 2001
From: Eugene R <reugpro@gmail.com>
Date: Fri, 27 May 2022 09:50:01 +0300
Subject: [PATCH] minor linter warning fixes (#13)

---
 cmd/wifiqr/main.go      | 27 ++++++++++++++-------------
 cmd/wifiqr/main_test.go |  6 ++++--
 wifiqr.go               |  2 +-
 3 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/cmd/wifiqr/main.go b/cmd/wifiqr/main.go
index 20fc4f4..d8bb145 100644
--- a/cmd/wifiqr/main.go
+++ b/cmd/wifiqr/main.go
@@ -18,7 +18,7 @@ const (
 	pskDesc  = "network key (password)"
 )
 
-var version string = "develop"
+var version = "develop"
 
 // generateCode creates a WiFi QR code.
 func generateCode(ssid, key string, encoding wifiqr.EncryptionProtocol, hidden bool) (*qrcode.QRCode, error) {
@@ -39,7 +39,7 @@ func validateAndGetFilename(filename string) string {
 	const pngExt = ".png"
 
 	if filepath.Ext(filename) != pngExt {
-		filename = filename + pngExt
+		filename += pngExt
 	}
 
 	return filename
@@ -77,7 +77,7 @@ func getInput(prompt string, validate func(string) error) (string, error) {
 
 // inputValidator is a generic function for getting user input if the value is empty.
 func inputValidator(value, prompt string, validate func(string) error) (string, error) {
-	var err error = nil
+	var err error
 
 	if value == "" {
 		value, err = getInput(prompt, validate)
@@ -134,7 +134,7 @@ func validateEncryption(protocol string) (wifiqr.EncryptionProtocol, error) {
 		},
 	}
 
-	_, enc, err := prompt.Run()
+	_, enc, _ := prompt.Run()
 
 	return wifiqr.NewEncryptionProtocol(enc)
 }
@@ -142,7 +142,7 @@ func validateEncryption(protocol string) (wifiqr.EncryptionProtocol, error) {
 // process generates the QR code given the parameters and can be
 // considered to be a layer below that of the CLI.
 func process(ssid, protocolIn, output string, pixels int, key string, keySet bool, hidden bool) int {
-	var err error = nil
+	var err error
 
 	ssid, err = validateSSID(ssid)
 	if err != nil {
@@ -207,14 +207,15 @@ the command line, the user will be prompted for the information.`,
 
 	rootCmd.Flags().StringVarP(&ssid, "ssid", "i", "", "Wireless network name")
 	rootCmd.Flags().StringVarP(&key, optionKey, "k", "", "Wireless password (pre-shared key / PSK)")
-	rootCmd.Flags().StringVarP(&protocolIn, "protocol", "p", wifiqr.WPA2.String(), "Wireless network encryption protocol ("+
-		strings.Join([]string{
-			wifiqr.WPA2.String(),
-			wifiqr.WPA.String(),
-			wifiqr.WEP.String(),
-			wifiqr.NONE.String(),
-		}, ", ")+
-		").")
+	rootCmd.Flags().StringVarP(&protocolIn, "protocol", "p", wifiqr.WPA2.String(),
+		"Wireless network encryption protocol ("+
+			strings.Join([]string{
+				wifiqr.WPA2.String(),
+				wifiqr.WPA.String(),
+				wifiqr.WEP.String(),
+				wifiqr.NONE.String(),
+			}, ", ")+
+			").")
 	rootCmd.Flags().BoolVarP(&hidden, "hidden", "", false, "Hidden SSID")
 	rootCmd.Flags().StringVarP(&output, "output", "o", "", "PNG file for output (default stdout)")
 	rootCmd.Flags().IntVarP(&pixels, "size", "s", 256, "Image width and height in pixels")
diff --git a/cmd/wifiqr/main_test.go b/cmd/wifiqr/main_test.go
index 74013de..14e42d8 100644
--- a/cmd/wifiqr/main_test.go
+++ b/cmd/wifiqr/main_test.go
@@ -51,7 +51,8 @@ func Test_generateCode(t *testing.T) {
 				encoding: wifiqr.WPA2,
 				hidden:   false,
 			},
-			want:    [32]byte{117, 113, 240, 31, 70, 131, 178, 237, 61, 56, 190, 135, 145, 86, 173, 81, 244, 78, 103, 173, 103, 188, 82, 70, 79, 180, 149, 217, 5, 113, 227, 25},
+			want: [32]byte{117, 113, 240, 31, 70, 131, 178, 237, 61, 56, 190, 135, 145, 86, 173, 81,
+				244, 78, 103, 173, 103, 188, 82, 70, 79, 180, 149, 217, 5, 113, 227, 25},
 			wantErr: false,
 		},
 		{
@@ -79,7 +80,8 @@ func Test_generateCode(t *testing.T) {
 				} else {
 					hash := sha256.Sum256(data)
 					if tt.want != hash {
-						t.Errorf("generateCode() png data does not match wanted hash, got: %v, want %v", byteString(hash), byteString(tt.want))
+						t.Errorf("generateCode() png data does not match wanted hash, got: %v, want %v",
+							byteString(hash), byteString(tt.want))
 					}
 				}
 			}
diff --git a/wifiqr.go b/wifiqr.go
index 5309b8b..4d1e1cd 100644
--- a/wifiqr.go
+++ b/wifiqr.go
@@ -22,7 +22,7 @@ func escapeString(s string) string {
 	// https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-network-config-android-ios-11
 
 	for _, c := range []byte{'\\', ';', ',', '"', ':'} {
-		s = strings.Replace(s, string(c), `\`+string(c), -1)
+		s = strings.ReplaceAll(s, string(c), `\`+string(c))
 	}
 
 	return s