Add Debian package building, add manpage, release v1.0.0

cmd/s3-genindex/main.go

@@ -20,6 +20,9 @@ import (
 	"git.ipng.ch/ipng/s3-genindex/internal/indexgen"
 )
 
+// Version is the application version (sync'd from debian/changelog)
+const Version = "1.0.0-1"
+
 // S3Config holds S3 connection configuration
 type S3Config struct {
 	Endpoint string
@@ -348,6 +351,7 @@ func main() {
 	var dryRun bool
 	var showIndexFiles bool
 	var watermarkURL string
+	var showVersion bool
 
 	// Set defaults
 	opts.DirAppend = true
@@ -363,6 +367,7 @@ func main() {
 	flag.BoolVar(&opts.Verbose, "v", false, "verbosely list every processed file")
 	flag.BoolVar(&showIndexFiles, "i", false, "show index.html files in directory listings")
 	flag.StringVar(&watermarkURL, "wm", "", "watermark logo URL to display in top left corner")
+	flag.BoolVar(&showVersion, "version", false, "show version information")
 
 	flag.Usage = func() {
 		fmt.Fprintf(os.Stderr, "Generate directory index files (recursive is ON, hidden files included by default).\n")
@@ -381,6 +386,12 @@ func main() {
 
 	flag.Parse()
 
+	// Handle version flag
+	if showVersion {
+		fmt.Printf("s3-genindex version %s\n", Version)
+		os.Exit(0)
+	}
+
 	// Check mutual exclusion and that exactly one option is provided
 	if directory == "" && s3URL == "" {
 		fmt.Fprintf(os.Stderr, "Error: Either -d <directory> or -s3 <url> must be specified.\n\n")