From a031b83a09a8628435317a03f199cdc18b78262f Mon Sep 17 00:00:00 2001
From: Matthew Heon <matthew.heon@gmail.com>
Date: Wed, 1 Nov 2017 11:24:59 -0400
Subject: Initial checkin from CRI-O repo

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
---
 .../k8s.io/apimachinery/pkg/util/net/port_range.go | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 vendor/k8s.io/apimachinery/pkg/util/net/port_range.go

(limited to 'vendor/k8s.io/apimachinery/pkg/util/net/port_range.go')

diff --git a/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go b/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go
new file mode 100644
index 000000000..6a50e6186
--- /dev/null
+++ b/vendor/k8s.io/apimachinery/pkg/util/net/port_range.go
@@ -0,0 +1,113 @@
+/*
+Copyright 2015 The Kubernetes 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 net
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// PortRange represents a range of TCP/UDP ports.  To represent a single port,
+// set Size to 1.
+type PortRange struct {
+	Base int
+	Size int
+}
+
+// Contains tests whether a given port falls within the PortRange.
+func (pr *PortRange) Contains(p int) bool {
+	return (p >= pr.Base) && ((p - pr.Base) < pr.Size)
+}
+
+// String converts the PortRange to a string representation, which can be
+// parsed by PortRange.Set or ParsePortRange.
+func (pr PortRange) String() string {
+	if pr.Size == 0 {
+		return ""
+	}
+	return fmt.Sprintf("%d-%d", pr.Base, pr.Base+pr.Size-1)
+}
+
+// Set parses a string of the form "min-max", inclusive at both ends, and
+// sets the PortRange from it.  This is part of the flag.Value and pflag.Value
+// interfaces.
+func (pr *PortRange) Set(value string) error {
+	value = strings.TrimSpace(value)
+
+	// TODO: Accept "80" syntax
+	// TODO: Accept "80+8" syntax
+
+	if value == "" {
+		pr.Base = 0
+		pr.Size = 0
+		return nil
+	}
+
+	hyphenIndex := strings.Index(value, "-")
+	if hyphenIndex == -1 {
+		return fmt.Errorf("expected hyphen in port range")
+	}
+
+	var err error
+	var low int
+	var high int
+	low, err = strconv.Atoi(value[:hyphenIndex])
+	if err == nil {
+		high, err = strconv.Atoi(value[hyphenIndex+1:])
+	}
+	if err != nil {
+		return fmt.Errorf("unable to parse port range: %s: %v", value, err)
+	}
+
+	if low > 65535 || high > 65535 {
+		return fmt.Errorf("the port range cannot be greater than 65535: %s", value)
+	}
+
+	if high < low {
+		return fmt.Errorf("end port cannot be less than start port: %s", value)
+	}
+
+	pr.Base = low
+	pr.Size = 1 + high - low
+	return nil
+}
+
+// Type returns a descriptive string about this type.  This is part of the
+// pflag.Value interface.
+func (*PortRange) Type() string {
+	return "portRange"
+}
+
+// ParsePortRange parses a string of the form "min-max", inclusive at both
+// ends, and initializs a new PortRange from it.
+func ParsePortRange(value string) (*PortRange, error) {
+	pr := &PortRange{}
+	err := pr.Set(value)
+	if err != nil {
+		return nil, err
+	}
+	return pr, nil
+}
+
+func ParsePortRangeOrDie(value string) *PortRange {
+	pr, err := ParsePortRange(value)
+	if err != nil {
+		panic(fmt.Sprintf("couldn't parse port range %q: %v", value, err))
+	}
+	return pr
+}
-- 
cgit v1.2.3-54-g00ecf