fix: goctl not compile on windows (#1500)

tools/goctl/migrate/cancel+polyfill.go

@@ -0,0 +1,7 @@
+//go:build windows
+// +build windows
+
+package migrate
+
+func cancelOnSignals() {
+}

tools/goctl/migrate/cancel.go

@@ -0,0 +1,31 @@
+//go:build linux || darwin
+// +build linux darwin
+
+package migrate
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/zeromicro/go-zero/core/syncx"
+	"github.com/zeromicro/go-zero/tools/goctl/util/console"
+)
+
+func cancelOnSignals() {
+	doneChan := syncx.NewDoneChan()
+	defer doneChan.Close()
+
+	go func(dc *syncx.DoneChan) {
+		c := make(chan os.Signal)
+		signal.Notify(c, syscall.SIGTERM, syscall.SIGKILL, syscall.SIGINT, syscall.SIGTSTP, syscall.SIGQUIT)
+		select {
+		case <-c:
+			console.Error(`
+migrate failed, reason: "User Canceled"`)
+			os.Exit(0)
+		case <-dc.Done():
+			return
+		}
+	}(doneChan)
+}

tools/goctl/migrate/migrate.go

@@ -10,16 +10,13 @@ import (
 	"io/fs"
 	"io/ioutil"
 	"os"
-	"os/signal"
 	"path/filepath"
 	"runtime"
 	"strings"
-	"syscall"
 	"time"
 
 	"github.com/logrusorgru/aurora"
 	"github.com/urfave/cli"
-	"github.com/zeromicro/go-zero/core/syncx"
 	"github.com/zeromicro/go-zero/tools/goctl/util/console"
 	"github.com/zeromicro/go-zero/tools/goctl/util/ctx"
 	"github.com/zeromicro/go-zero/tools/goctl/vars"
@@ -71,22 +68,7 @@ func rewriteImport(verbose bool) error {
 		time.Sleep(200 * time.Millisecond)
 	}
 
-	doneChan := syncx.NewDoneChan()
-	defer func() {
-		doneChan.Close()
-	}()
-	go func(dc *syncx.DoneChan) {
-		c := make(chan os.Signal)
-		signal.Notify(c, syscall.SIGTERM, syscall.SIGKILL, syscall.SIGINT, syscall.SIGTSTP, syscall.SIGQUIT)
-		select {
-		case <-c:
-			console.Error(`
-migrate failed, reason: "User Canceled"`)
-			os.Exit(0)
-		case <-dc.Done():
-			return
-		}
-	}(doneChan)
+	cancelOnSignals()
 
 	wd, err := os.Getwd()
 	if err != nil {