util/scripts/maintainers.go: Introduce command line argument handling

First new option is -debug.

Change-Id: Ia6e9b3675449a0b1e6f5d7526ee999f925eaadb2
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/29606
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 22 insertions, 25 deletions

diff --git a/util/scripts/maintainers.go b/util/scripts/maintainers.go
index 4d6cb7d822eb..e4c2387398d1 100644
--- a/util/scripts/maintainers.go
+++ b/util/scripts/maintainers.go
@@ -15,6 +15,7 @@ package main
 
 import (
 	"bufio"
+	"flag"
 	"fmt"
 	"log"
 	"os"
@@ -258,46 +259,42 @@ func glob_to_regex(glob string) string {
 }
 
 func main() {
-	var files []string
-	var maint bool
-	var debug bool
-	var err error
-
-	args := os.Args[1:]
-	if len(args) == 0 {
-		/* get the filenames */
-		files, err = get_git_files()
-		if err != nil {
-			log.Fatalf("Oops.")
-			return
-		}
-		maint = false
-	} else {
-		files = args
-		maint = true
-	}
+	var (
+		files []string
+		err   error
+		debug = flag.Bool("debug", false, "emit additional debug output")
+	)
+	flag.Parse()
 
+	/* get and build subsystem database */
 	maintainers, err := get_maintainers()
 	if err != nil {
 		log.Fatalf("Oops.")
 		return
 	}
-
-	/* build subsystem database */
 	build_maintainers(maintainers)
 
-	if debug {
+	if *debug {
 		print_maintainers()
 	}
 
-	if maint {
-		/* Find maintainers for each file */
+	args := flag.Args()
+	if len(args) == 0 {
+		/* get the filenames */
+		files, err = get_git_files()
+		if err != nil {
+			log.Fatalf("Oops.")
+			return
+		}
 		for _, file := range files {
-			find_maintainer(file)
+			find_unmaintained(file)
 		}
 	} else {
+		files = args
+
+		/* Find maintainers for each file */
 		for _, file := range files {
-			find_unmaintained(file)
+			find_maintainer(file)
 		}
 	}
 }