Add --ignore-case option (#28)

.github/workflows/test.yml

@@ -1,24 +1,32 @@
-on: [push, pull_request]
 name: Test
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
 jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.13.x, 1.14.x]
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        go-version: [1.14.x, 1.16.x]
+        os: [macos-latest, ubuntu-latest, windows-latest]
+
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-      - name: Install Go
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
         uses: actions/setup-go@v2
         with:
           go-version: ${{ matrix.go-version }}
-      - name: Checkout code
-        uses: actions/checkout@v2
+
+      - name: Build
+        run: go build -v ./...
+
       - name: Test
-        run: go test ./...
+        run: go test -v ./... -coverprofile=coverage.txt -covermode=atomic
+
+      - name: Upload coverage to Codecov
+        run: bash <(curl -s https://codecov.io/bash)
+        if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.16.x'

cmd/generate.go

@@ -28,11 +28,15 @@ var generateConfigMapCmd = &cobra.Command{
 		stripPrefix, err := cmd.Flags().GetBool("strip-prefix")
 		handleError(err)
 
+		ignoreCase, err := cmd.Flags().GetBool("ignore-case")
+		handleError(err)
+
 		configMap, err := lib.GenerateConfigMap(lib.GenerateConfigMapParams{
 			Name:            name,
 			FromEnvironment: fromEnv,
 			Prefix:          prefix,
 			StripPrefix:     stripPrefix,
+			IgnoreCase:      ignoreCase,
 		})
 		handleError(err)
 
@@ -45,7 +49,7 @@ func init() {
 	generateCmd.AddCommand(generateConfigMapCmd)
 
 	generateConfigMapCmd.Flags().Bool("env", false, "Load variables from environment")
-	generateConfigMapCmd.Flags().Bool("strip-prefix", false, "Strip the variable name prefix")
-
 	generateConfigMapCmd.Flags().String("prefix", "", "Filter the variables by this prefix")
+	generateConfigMapCmd.Flags().Bool("strip-prefix", false, "Strip the variable name prefix")
+	generateConfigMapCmd.Flags().BoolP("ignore-case", "i", false, "Ignore  case  distinctions when filtering variable names")
 }

lib/generate.go

@@ -14,6 +14,7 @@ type GenerateConfigMapParams struct {
 	FromEnvironment bool
 	Prefix          string
 	StripPrefix     bool
+	IgnoreCase      bool
 }
 
 func (p GenerateConfigMapParams) Validate() error {
@@ -45,6 +46,10 @@ func (p GenerateConfigMapParams) getVariables() (map[string]string, error) {
 }
 
 func (p GenerateConfigMapParams) isValidKey(key string) bool {
+	if p.IgnoreCase {
+		key = strings.ToLower(key)
+		p.Prefix = strings.ToLower(p.Prefix)
+	}
 	return strings.HasPrefix(key, p.Prefix)
 }