Initial commit

pkg/params/pagging.go

@@ -0,0 +1,54 @@
+/*
+
+ Copyright 2019 The KubeSphere Authors.
+
+ 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 params
+
+import (
+	"regexp"
+	"strconv"
+
+	"golang.org/x/tools/container/intsets"
+)
+
+const (
+	Paging     = "paging"
+	OrderBy    = "orderBy"
+	Conditions = "conditions"
+	Reserve    = "reserve"
+)
+
+func ParsePaging(paging string) (limit, offset int) {
+	limit = intsets.MaxInt
+	offset = 0
+	if groups := regexp.MustCompile(`^limit=(\d+),page=(\d+)$`).FindStringSubmatch(paging); len(groups) == 3 {
+		limit, _ = strconv.Atoi(groups[1])
+		page, _ := strconv.Atoi(groups[2])
+		if page < 0 {
+			page = 1
+		}
+		offset = (page - 1) * limit
+	}
+	return
+}
+
+func ParseReserve(reserve string) bool {
+	b, err := strconv.ParseBool(reserve)
+	if err != nil {
+		return false
+	}
+	return b
+}