l18n: add localization support

Revise the messages to make them localizable.

Note: The log messages are not marked for localization. Probably, we
want to keep log files in English for easier global troubleshooting.

Having a user run `go generate` requires a valid and up-to-date Go
environment. Rather than instructing users how to setup the environment
correctly, the `go generate` was integrated into build.bat. This reuses
the Go building environment downloaded and prepared by build.bat to
provide controllable and consistent result.

Use `make generate` on Linux.

As the zgotext.go output varies for GOARCH=386 and amd64, one had to be
chosen to provide stable output. The former is the first one to build in
build.bat.

Signed-off-by: Simon Rozman <simon@rozman.si>

1 files changed, 4 insertions, 3 deletions

diff --git a/ui/filesave.go b/ui/filesave.go
index 4b5c2947..7ca8a2c2 100644
--- a/ui/filesave.go
+++ b/ui/filesave.go
@@ -6,10 +6,11 @@
 package ui
 
 import (
-	"fmt"
 	"os"
 
 	"github.com/lxn/walk"
+
+	"golang.zx2c4.com/wireguard/windows/l18n"
 )
 
 func writeFileWithOverwriteHandling(owner walk.Form, filePath string, write func(file *os.File) error) bool {
@@ -18,7 +19,7 @@ func writeFileWithOverwriteHandling(owner walk.Form, filePath string, write func
 			return false
 		}
 
-		showErrorCustom(owner, "Writing file failed", err.Error())
+		showErrorCustom(owner, l18n.Sprintf("Writing file failed"), err.Error())
 
 		return true
 	}
@@ -26,7 +27,7 @@ func writeFileWithOverwriteHandling(owner walk.Form, filePath string, write func
 	file, err := os.OpenFile(filePath, os.O_CREATE|os.O_WRONLY|os.O_EXCL, 0600)
 	if err != nil {
 		if os.IsExist(err) {
-			if walk.DlgCmdNo == walk.MsgBox(owner, "Writing file failed", fmt.Sprintf(`File ‘%s’ already exists.
+			if walk.DlgCmdNo == walk.MsgBox(owner, l18n.Sprintf("Writing file failed"), l18n.Sprintf(`File ‘%s’ already exists.
 
 Do you want to overwrite it?`, filePath), walk.MsgBoxYesNo|walk.MsgBoxDefButton2|walk.MsgBoxIconWarning) {
 				return false