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forgejo/modules/indexer/internal/paginator.go

35 lines
929 B
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package internal
import (
"math"
"code.gitea.io/gitea/models/db"
)
// ParsePaginator parses a db.Paginator into a skip and limit
func ParsePaginator(paginator *db.ListOptions, max ...int) (int, int) {
// Use a very large number to indicate no limit
unlimited := math.MaxInt32
if len(max) > 0 {
// Some indexer engines have a limit on the page size, respect that
unlimited = max[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()
}