main: adding a quiet flag to reduce the output

so you can test and just check return code

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

main.go

@@ -17,6 +17,7 @@ var (
 	flRun         = flag.String("run", "", "comma delimited list of rules to run. Defaults to all.")
 	flVerbose     = flag.Bool("v", false, "verbose")
 	flDebug       = flag.Bool("D", false, "debug output")
+	flQuiet       = flag.Bool("q", false, "less output")
 	flDir         = flag.String("d", ".", "git directory to validate from")
 )
 
@@ -26,6 +27,9 @@ func main() {
 	if *flDebug {
 		os.Setenv("DEBUG", "1")
 	}
+	if *flQuiet {
+		os.Setenv("QUIET", "1")
+	}
 
 	if *flListRules {
 		for _, r := range validate.RegisteredRules {

validate/runner.go

@@ -70,10 +70,18 @@ func (r *Runner) Run() error {
 
 	// run them and show results
 	for _, commit := range c {
-		fmt.Printf(" * %s %q ... ", commit["abbreviated_commit"], commit["subject"])
+		if os.Getenv("QUIET") == "" {
+			fmt.Printf(" * %s %q ... ", commit["abbreviated_commit"], commit["subject"])
+		}
 		vr := Commit(commit, r.Rules)
 		r.Results = append(r.Results, vr...)
-		if _, fail := vr.PassFail(); fail == 0 {
+		_, fail := vr.PassFail()
+		if os.Getenv("QUIET") != "" {
+			// everything else in the loop is printing output.
+			// If we're quiet, then just continue
+			continue
+		}
+		if fail == 0 {
 			fmt.Println("PASS")
 		} else {
 			fmt.Println("FAIL")