snapshot of https://github.com/ory/keto.git (master, 2026-09-16; blobs > 131072B omitted)

oryx/pagination/parse.go

@@ -0,0 +1,48 @@
+// Copyright © 2023 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+package pagination
+
+import (
+	"net/http"
+	"strconv"
+)
+
+// Parse parses limit and offset from *http.Request with given limits and defaults.
+func Parse(r *http.Request, defaultLimit, defaultOffset, maxLimit int) (int, int) {
+	var offset, limit int
+
+	if offsetParam := r.URL.Query().Get("offset"); offsetParam == "" {
+		offset = defaultOffset
+	} else {
+		if offset64, err := strconv.ParseInt(offsetParam, 10, 64); err != nil {
+			offset = defaultOffset
+		} else {
+			offset = int(offset64)
+		}
+	}
+
+	if limitParam := r.URL.Query().Get("limit"); limitParam == "" {
+		limit = defaultLimit
+	} else {
+		if limit64, err := strconv.ParseInt(limitParam, 10, 64); err != nil {
+			limit = defaultLimit
+		} else {
+			limit = int(limit64)
+		}
+	}
+
+	if limit > maxLimit {
+		limit = maxLimit
+	}
+
+	if limit < 0 {
+		limit = 0
+	}
+
+	if offset < 0 {
+		offset = 0
+	}
+
+	return limit, offset
+}