Merge PR #16: Use %USERPROFILE% instead of $HOME on Windows for Grumble's default data dir.

cmd/grumble/args.go

@@ -13,6 +13,7 @@ type UsageArgs struct {
 	BuildDate      string
 	OS             string
 	Arch           string
+	DefaultDataDir string
 }
 
 var usageTmpl = `usage: grumble [options]
@@ -23,7 +24,7 @@ var usageTmpl = `usage: grumble [options]
  --help
      Shows this help listing.
 
- --datadir <data-dir> (default: $HOME/.grumble)
+ --datadir <data-dir> (default: {{.DefaultDataDir}})
      Directory to use for server storage.
 
  --log <log-path> (default: $DATADIR/grumble.log)
@@ -54,11 +55,12 @@ type args struct {
 }
 
 func defaultDataDir() string {
+	homedir := os.Getenv("HOME")
 	dirname := ".grumble"
 	if runtime.GOOS == "windows" {
-		dirname = "grumble"
+		homedir = os.Getenv("USERPROFILE")
 	}
-	return filepath.Join(os.Getenv("HOME"), dirname)
+	return filepath.Join(homedir, dirname)
 }
 
 func defaultLogPath() string {
@@ -76,6 +78,7 @@ func Usage() {
 		BuildDate:      buildDate,
 		OS:             runtime.GOOS,
 		Arch:           runtime.GOARCH,
+		DefaultDataDir: defaultDataDir(),
 	})
 	if err != nil {
 		panic("unable to execute usage template")