Feature goctl error wrap (#995)

* Add `Wrap` in file errorx.go

* Wrap error with `GoctlError`

* format code

* Refactor package `env` to `version`

* Refactor package `IsVersionGatherThan`

* fix typo

Co-authored-by: anqiansong <anqiansong@bytedance.com>

tools/goctl/internal/errorx/errorx._test.go

@@ -0,0 +1,15 @@
+package errorx
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWrap(t *testing.T) {
+	err := errors.New("foo")
+	err = Wrap(err)
+	_, ok := err.(*GoctlError)
+	assert.True(t, ok)
+}

tools/goctl/internal/errorx/errorx.go

@@ -0,0 +1,44 @@
+package errorx
+
+import (
+	"fmt"
+	"runtime"
+	"strings"
+
+	"github.com/tal-tech/go-zero/tools/goctl/internal/version"
+)
+
+var errorFormat = `goctl: generation error: %+v
+goctl version: %s
+%s`
+
+type GoctlError struct {
+	message []string
+	err     error
+}
+
+func (e *GoctlError) Error() string {
+	detail := wrapMessage(e.message...)
+	v := fmt.Sprintf("%s %s/%s", version.BuildVersion, runtime.GOOS, runtime.GOARCH)
+	return fmt.Sprintf(errorFormat, e.err, v, detail)
+}
+
+// Wrap wraps an error with goctl version and message.
+func Wrap(err error, message ...string) error {
+	e, ok := err.(*GoctlError)
+	if ok {
+		return e
+	}
+
+	return &GoctlError{
+		message: message,
+		err:     err,
+	}
+}
+
+func wrapMessage(message ...string) string {
+	if len(message) == 0 {
+		return ""
+	}
+	return fmt.Sprintf(`message: %s`, strings.Join(message, "\n"))
+}