Merge pull request #2740 from Matt-Gleich/homedir

Refactor to use os.UserHomeDir()

git/ssh_config.go

@@ -9,7 +9,7 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/mitchellh/go-homedir"
+	"github.com/cli/cli/internal/config"
 )
 
 var (
@@ -147,10 +147,10 @@ func ParseSSHConfig() SSHAliasMap {
 
 	p := sshParser{}
 
-	if homedir, err := homedir.Dir(); err == nil {
-		userConfig := filepath.Join(homedir, ".ssh", "config")
+	if sshDir, err := config.HomeDirPath(".ssh"); err == nil {
+		userConfig := filepath.Join(sshDir, "config")
 		configFiles = append([]string{userConfig}, configFiles...)
-		p.homeDir = homedir
+		p.homeDir = filepath.Dir(sshDir)
 	}
 
 	for _, file := range configFiles {

internal/config/config_file.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path"
+	"path/filepath"
 	"syscall"
 
 	"github.com/mitchellh/go-homedir"
@@ -14,8 +15,8 @@ import (
 )
 
 func ConfigDir() string {
-	dir, _ := homedir.Expand("~/.config/gh")
-	return dir
+	homeDir, _ := homeDirAutoMigrate()
+	return homeDir
 }
 
 func ConfigFile() string {
@@ -30,6 +31,62 @@ func ParseDefaultConfig() (Config, error) {
 	return ParseConfig(ConfigFile())
 }
 
+func HomeDirPath(subdir string) (string, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		// TODO: remove go-homedir fallback in GitHub CLI v2
+		if legacyDir, err := homedir.Dir(); err == nil {
+			return filepath.Join(legacyDir, subdir), nil
+		}
+		return "", err
+	}
+
+	newPath := filepath.Join(homeDir, subdir)
+	if s, err := os.Stat(newPath); err == nil && s.IsDir() {
+		return newPath, nil
+	}
+
+	// TODO: remove go-homedir fallback in GitHub CLI v2
+	if legacyDir, err := homedir.Dir(); err == nil {
+		legacyPath := filepath.Join(legacyDir, subdir)
+		if s, err := os.Stat(legacyPath); err == nil && s.IsDir() {
+			return legacyPath, nil
+		}
+	}
+
+	return newPath, nil
+}
+
+// Looks up the `~/.config/gh` directory with backwards-compatibility with go-homedir and auto-migration
+// when an old homedir location was found.
+func homeDirAutoMigrate() (string, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		// TODO: remove go-homedir fallback in GitHub CLI v2
+		if legacyDir, err := homedir.Dir(); err == nil {
+			return filepath.Join(legacyDir, ".config", "gh"), nil
+		}
+		return "", err
+	}
+
+	newPath := filepath.Join(homeDir, ".config", "gh")
+	_, newPathErr := os.Stat(newPath)
+	if newPathErr == nil || !os.IsNotExist(err) {
+		return newPath, newPathErr
+	}
+
+	// TODO: remove go-homedir fallback in GitHub CLI v2
+	if legacyDir, err := homedir.Dir(); err == nil {
+		legacyPath := filepath.Join(legacyDir, ".config", "gh")
+		if s, err := os.Stat(legacyPath); err == nil && s.IsDir() {
+			_ = os.MkdirAll(filepath.Dir(newPath), 0755)
+			return newPath, os.Rename(legacyPath, newPath)
+		}
+	}
+
+	return newPath, nil
+}
+
 var ReadConfigFile = func(filename string) ([]byte, error) {
 	f, err := os.Open(filename)
 	if err != nil {