cmd: remove configdir usage

cmd/configdir_go112.go

@@ -0,0 +1,68 @@
+// +build !go1.13
+
+/*
+ *
+ * k6 - a next-generation load testing tool
+ * Copyright (C) 2019 Load Impact
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package cmd
+
+import (
+	"errors"
+	"os"
+	"runtime"
+)
+
+// TODO(cuonglm): remove this when last supported version bump to go1.13
+func configDir() (string, error) {
+	var dir string
+
+	switch runtime.GOOS {
+	case "windows":
+		dir = os.Getenv("AppData")
+		if dir == "" {
+			return "", errors.New("%AppData% is not defined")
+		}
+
+	case "darwin":
+		dir = os.Getenv("HOME")
+		if dir == "" {
+			return "", errors.New("$HOME is not defined")
+		}
+		dir += "/Library/Application Support"
+
+	case "plan9":
+		dir = os.Getenv("home")
+		if dir == "" {
+			return "", errors.New("$home is not defined")
+		}
+		dir += "/lib"
+
+	default: // Unix
+		dir = os.Getenv("XDG_CONFIG_HOME")
+		if dir == "" {
+			dir = os.Getenv("HOME")
+			if dir == "" {
+				return "", errors.New("neither $XDG_CONFIG_HOME nor $HOME are defined")
+			}
+			dir += "/.config"
+		}
+	}
+
+	return dir, nil
+}

cmd/configdir_go113.go

@@ -0,0 +1,29 @@
+// +build go1.13
+
+/*
+ *
+ * k6 - a next-generation load testing tool
+ * Copyright (C) 2019 Load Impact
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package cmd
+
+import "os"
+
+func configDir() (string, error) {
+	return os.UserConfigDir()
+}

cmd/root.go

@@ -31,7 +31,6 @@ import (
 	"github.com/fatih/color"
 	"github.com/mattn/go-colorable"
 	"github.com/mattn/go-isatty"
-	"github.com/shibukawa/configdir"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -114,13 +113,16 @@ func rootCmdPersistentFlagSet() *pflag.FlagSet {
 }
 
 func init() {
-	// TODO: find a better library... or better yet, simply port the few dozen lines of code for getting the
-	// per-user config folder in a cross-platform way
-	configDirs := configdir.New("loadimpact", "k6")
-	configFolders := configDirs.QueryFolders(configdir.Global)
-	if len(configFolders) > 0 {
-		defaultConfigFilePath = filepath.Join(configFolders[0].Path, defaultConfigFileName)
+	confDir, err := configDir()
+	if err != nil {
+		panic(err)
 	}
+	defaultConfigFilePath = filepath.Join(
+		confDir,
+		"loadimpact",
+		"k6",
+		defaultConfigFileName,
+	)
 
 	RootCmd.PersistentFlags().AddFlagSet(rootCmdPersistentFlagSet())
 }