Moved the windows stuff to separate file

user/user.go

@@ -5,8 +5,6 @@ import (
 	"os"
 	"runtime"
 
-	"golang.org/x/sys/windows"
-
 	"git.martyn.berlin/martyn/directories/base"
 )
 
@@ -22,8 +20,7 @@ func Audio() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Music, 0)
-		return path, err
+		return windowsAudio()
 	case "darwin":
 		h, err := Home()
 		return h + "/Music", err
@@ -39,8 +36,7 @@ func Desktop() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Desktop, 0)
-		return path, err
+		return windowsDesktop()
 	case "darwin":
 		h, err := Home()
 		return h + "/Desktop", err
@@ -56,8 +52,7 @@ func Documents() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Documents, 0)
-		return path, err
+		return windowsDocuments()
 	case "darwin":
 		h, err := Home()
 		return h + "/Documents", err
@@ -73,8 +68,7 @@ func Downloads() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Downloads, 0)
-		return path, err
+		return windowsDownloads()
 	case "darwin":
 		h, err := Home()
 		return h + "/Downloads", err
@@ -109,8 +103,7 @@ func Pictures() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Pictures, 0)
-		return path, err
+		return windowsPictures()
 	case "darwin":
 		h, err := Home()
 		return h + "/Pictures", err
@@ -126,8 +119,7 @@ func Public() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Public, 0)
-		return path, err
+		return windowsPublic()
 	case "darwin":
 		h, err := Home()
 		return h + "/Public", err
@@ -143,8 +135,7 @@ func Templates() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Templates, 0)
-		return path, err
+		return windowsTemplates()
 	case "darwin":
 		h, err := Home()
 		return h + "/Templates", err
@@ -160,8 +151,7 @@ func Videos() (string, error) {
 			return e, nil
 		}
 	case "windows":
-		path, err := windows.KnownFolderPath(windows.FOLDERID_Videos, 0)
-		return path, err
+		return windowsVideos()
 	case "darwin":
 		h, err := Home()
 		return h + "/Videos", err

user/user_nonwindows.go

@@ -0,0 +1,42 @@
+//go:build !windows
+// +build !windows
+
+package user
+
+import "errors"
+
+func wrongPlatform() (string, error) {
+	return "", errors.New("using windows call on non-windows system")
+}
+
+func windowsAudio() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsDesktop() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsDocuments() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsDownloads() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsPictures() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsPublic() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsTemplates() (string, error) {
+	return wrongPlatform()
+}
+
+func windowsVideos() (string, error) {
+	return wrongPlatform()
+}

user/user_windows.go

@@ -0,0 +1,46 @@
+//go:build windows
+// +build windows
+
+package user
+
+import "golang.org/x/sys/windows"
+
+func windowsAudio() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Music, 0)
+	return path, err
+}
+
+func windowsDesktop() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Desktop, 0)
+	return path, err
+}
+
+func windowsDocuments() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Documents, 0)
+	return path, err
+}
+
+func windowsDownloads() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Downloads, 0)
+	return path, err
+}
+
+func windowsPictures() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Pictures, 0)
+	return path, err
+}
+
+func windowsPublic() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Public, 0)
+	return path, err
+}
+
+func windowsTemplates() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Templates, 0)
+	return path, err
+}
+
+func windowsVideos() (string, error) {
+	path, err := windows.KnownFolderPath(windows.FOLDERID_Videos, 0)
+	return path, err
+}