chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,65 @@
+// Copyright 2024 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package information_schema
+
+import (
+	"github.com/dolthub/dolt/go/libraries/doltcore/doltdb"
+	"github.com/dolthub/go-mysql-server/sql"
+	"github.com/dolthub/go-mysql-server/sql/information_schema"
+	"github.com/dolthub/go-mysql-server/sql/mysql_db"
+)
+
+// allDatabasesWithNames returns the current database(s) and their catalog and schema names.
+func allDatabasesWithNames(ctx *sql.Context, cat sql.Catalog, privCheck bool) ([]information_schema.DbWithNames, error) {
+	var dbs []information_schema.DbWithNames
+
+	currentDB := ctx.GetCurrentDatabase()
+	currentRevDB, _ := doltdb.SplitRevisionDbName(currentDB)
+
+	allDbs := cat.AllDatabases(ctx)
+	for _, db := range allDbs {
+		// Always unwrap PrivilegedDatabase to reach the underlying SchemaDatabase implementation.
+		// PrivilegedDatabase does not implement sql.SchemaDatabase; unwrapping is required for
+		// schema iteration regardless of privilege-check mode.
+		if privDatabase, ok := db.(mysql_db.PrivilegedDatabase); ok {
+			db = privDatabase.Unwrap()
+		}
+
+		sdb, ok := db.(sql.SchemaDatabase)
+		if ok {
+			var dbsForSchema []information_schema.DbWithNames
+			schemas, err := sdb.AllSchemas(ctx)
+			if err != nil {
+				return nil, err
+			}
+
+			for _, schema := range schemas {
+				dbName := db.Name()
+				revDb, _ := doltdb.SplitRevisionDbName(dbName)
+				// Add database it is the current database/revision database and if SchemaName exists
+				if schema.SchemaName() != "" && (dbName == currentDB || revDb == currentRevDB) {
+					dbsForSchema = append(dbsForSchema, information_schema.DbWithNames{
+						Database:    schema,
+						CatalogName: schema.Name(),
+						SchemaName:  schema.SchemaName(),
+					})
+				}
+			}
+			dbs = append(dbs, dbsForSchema...)
+		}
+	}
+
+	return dbs, nil
+}