1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/github.com/go-redis/redis/v7/internal/util.go b/vendor/github.com/go-redis/redis/v7/internal/util.go
new file mode 100644
index 0000000000..844f34bad8
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/internal/util.go
@@ -0,0 +1,56 @@
+package internal
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-redis/redis/v7/internal/util"
+)
+
+func Sleep(ctx context.Context, dur time.Duration) error {
+	t := time.NewTimer(dur)
+	defer t.Stop()
+
+	select {
+	case <-t.C:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+func ToLower(s string) string {
+	if isLower(s) {
+		return s
+	}
+
+	b := make([]byte, len(s))
+	for i := range b {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			c += 'a' - 'A'
+		}
+		b[i] = c
+	}
+	return util.BytesToString(b)
+}
+
+func isLower(s string) bool {
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			return false
+		}
+	}
+	return true
+}
+
+func Unwrap(err error) error {
+	u, ok := err.(interface {
+		Unwrap() error
+	})
+	if !ok {
+		return nil
+	}
+	return u.Unwrap()
+}