added goreleaser to manage releases

.github/workflows/release_build.yml

@@ -0,0 +1,31 @@
+name: Release Go project
+
+on:
+  push:
+    tags:
+      - "*" # triggers only if push new tag version, like `0.8.4` or else
+
+jobs:
+  build:
+    name: GoReleaser build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # See: https://goreleaser.com/ci/actions/
+
+      - name: Set up Go 1.15
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15
+        id: go
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@master
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GO_RELEASER_GITHUB_TOKEN }}

main.go

@@ -211,10 +211,10 @@ func replaceTextBetweenMarkers(sourceText string, config Config) string {
 	paddedReplaceText := fmt.Sprintf("%s%s", strings.Repeat(" ", config.Indent),
 		reAddSpaces.ReplaceAllString(config.Block, "\n"+strings.Repeat(" ", config.Indent)))
 
-	if !config.State {
-		// Remove the block
+	switch {
+	case !config.State:
 		return removeExistingBlock(sourceText, config.BeginMarker, config.EndMarker)
-	} else if config.InsertBefore != "" {
+	case config.InsertBefore != "":
 		sourceText = removeExistingBlock(sourceText, config.BeginMarker, config.EndMarker)
 
 		var index = strings.LastIndex(sourceText, config.InsertBefore)
@@ -233,7 +233,7 @@ func replaceTextBetweenMarkers(sourceText string, config Config) string {
 			paddedReplaceText,
 			paddedEndMarker,
 			sourceText[index:])
-	} else if config.InsertAfter != "" {
+	case config.InsertAfter != "":
 		sourceText = removeExistingBlock(sourceText, config.BeginMarker, config.EndMarker)
 
 		var index = strings.LastIndex(sourceText, config.InsertAfter)
@@ -253,7 +253,7 @@ func replaceTextBetweenMarkers(sourceText string, config Config) string {
 			paddedReplaceText,
 			paddedEndMarker,
 			sourceText[index:])
-	} else if strings.Contains(sourceText, config.BeginMarker) {
+	case strings.Contains(sourceText, config.BeginMarker):
 		// Remove any leading spaces before replacing the block in case indentation changed
 		beginIndex := strings.LastIndex(sourceText, config.BeginMarker)
 		sourceText = removeLeadingSpacesOfBlock(sourceText, beginIndex)
@@ -266,7 +266,7 @@ func replaceTextBetweenMarkers(sourceText string, config Config) string {
 				paddedReplaceText,
 				paddedEndMarker),
 		)
-	} else {
+	default:
 		// Not found, add to EOF
 		return fmt.Sprintf("%s%s\n%s\n%s\n",
 			sourceText,