1 files changed, 64 insertions, 0 deletions
diff --git a/models/db/convert.go b/models/db/convert.go
new file mode 100644
index 0000000..956e17d
--- /dev/null
+++ b/models/db/convert.go
@@ -0,0 +1,64 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package db
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+
+	"xorm.io/xorm"
+	"xorm.io/xorm/schemas"
+)
+
+// ConvertDatabaseTable converts database and tables from utf8 to utf8mb4 if it's mysql and set ROW_FORMAT=dynamic
+func ConvertDatabaseTable() error {
+	if x.Dialect().URI().DBType != schemas.MYSQL {
+		return nil
+	}
+
+	r, err := CheckCollations(x)
+	if err != nil {
+		return err
+	}
+
+	databaseName := strings.SplitN(setting.Database.Name, "?", 2)[0]
+	_, err = x.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE %s", databaseName, r.ExpectedCollation))
+	if err != nil {
+		return err
+	}
+
+	tables, err := x.DBMetas()
+	if err != nil {
+		return err
+	}
+	for _, table := range tables {
+		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` ROW_FORMAT=dynamic", table.Name)); err != nil {
+			return err
+		}
+
+		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE %s", table.Name, r.ExpectedCollation)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Cell2Int64 converts a xorm.Cell type to int64,
+// and handles possible irregular cases.
+func Cell2Int64(val xorm.Cell) int64 {
+	switch (*val).(type) {
+	case []uint8:
+		log.Trace("Cell2Int64 ([]uint8): %v", *val)
+
+		v, _ := strconv.ParseInt(string((*val).([]uint8)), 10, 64)
+		return v
+	default:
+		return (*val).(int64)
+	}
+}