ci: add golangci-lint GitHub workflow

Author: reugn

.github/workflows/golangci-lint.yml

@@ -0,0 +1,32 @@
+name: golangci-lint
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get go version from go.mod
+        run: |
+          echo "GO_VERSION=$(grep '^go ' go.mod | cut -d " " -f 2)" >> $GITHUB_ENV
+
+      - name: Setup-go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v7
+        with:
+          version: v2.1.5

.golangci.yml

@@ -0,0 +1,57 @@
+version: "2"
+run:
+  timeout: 2m
+linters:
+  default: none
+  enable:
+    - dupl
+    - errcheck
+    - funlen
+    - goconst
+    - gocritic
+    - gocyclo
+    - gosec
+    - govet
+    - ineffassign
+    - lll
+    - misspell
+    - nolintlint
+    - prealloc
+    - revive
+    - staticcheck
+    - thelper
+    - tparallel
+    - unconvert
+    - unparam
+    - unused
+  settings:
+    thelper:
+      test:
+        begin: false
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
+      - linters:
+          - funlen
+          - unparam
+        path: _test\.go
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofmt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

cmd/wifiqr/main.go

@@ -199,7 +199,7 @@ the command line, the user will be prompted for the information.`,
 		Version: version,
 	}
 
-	rootCmd.Run = func(cmd *cobra.Command, args []string) {
+	rootCmd.Run = func(_ *cobra.Command, _ []string) {
 		keySet = rootCmd.Flags().Changed(optionKey)
 
 		exitVal = process(ssid, protocolIn, output, pixels, key, keySet, hidden)

cmd/wifiqr/main_test.go

@@ -22,6 +22,7 @@ func byteString(b [32]byte) string {
 	return s + " }"
 }
 
+//nolint:gosec
 func Test_generateCode(t *testing.T) {
 	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"