初始提交: Gitea 项目代码

modules/indexer/internal/paginator.go

@@ -0,0 +1,34 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package internal
+
+import (
+	"math"
+
+	"gitea.dev/models/db"
+)
+
+// ParsePaginator parses a db.Paginator into a skip and limit
+func ParsePaginator(paginator *db.ListOptions, maxNums ...int) (int, int) {
+	// Use a very large number to indicate no limit
+	unlimited := math.MaxInt32
+	if len(maxNums) > 0 {
+		// Some indexer engines have a limit on the page size, respect that
+		unlimited = maxNums[0]
+	}
+
+	if paginator == nil || paginator.IsListAll() {
+		// It shouldn't happen. In actual usage scenarios, there should not be requests to search all.
+		// But if it does happen, respect it and return "unlimited".
+		// And it's also useful for testing.
+		return 0, unlimited
+	}
+
+	if paginator.PageSize == 0 {
+		// Do not return any results when searching, it's used to get the total count only.
+		return 0, 0
+	}
+
+	return paginator.GetSkipTake()
+}