Move Ingress godeps to vendor/

vendor/k8s.io/kubernetes/pkg/api/resource/suffix.go

@@ -0,0 +1,136 @@
+/*
+Copyright 2014 The Kubernetes Authors All rights reserved.
+
+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 resource
+
+import (
+	"strconv"
+)
+
+type suffix string
+
+// suffixer can interpret and construct suffixes.
+type suffixer interface {
+	interpret(suffix) (base, exponent int, fmt Format, ok bool)
+	construct(base, exponent int, fmt Format) (s suffix, ok bool)
+}
+
+// quantitySuffixer handles suffixes for all three formats that quantity
+// can handle.
+var quantitySuffixer = newSuffixer()
+
+type bePair struct {
+	base, exponent int
+}
+
+type listSuffixer struct {
+	suffixToBE map[suffix]bePair
+	beToSuffix map[bePair]suffix
+}
+
+func (ls *listSuffixer) addSuffix(s suffix, pair bePair) {
+	if ls.suffixToBE == nil {
+		ls.suffixToBE = map[suffix]bePair{}
+	}
+	if ls.beToSuffix == nil {
+		ls.beToSuffix = map[bePair]suffix{}
+	}
+	ls.suffixToBE[s] = pair
+	ls.beToSuffix[pair] = s
+}
+
+func (ls *listSuffixer) lookup(s suffix) (base, exponent int, ok bool) {
+	pair, ok := ls.suffixToBE[s]
+	if !ok {
+		return 0, 0, false
+	}
+	return pair.base, pair.exponent, true
+}
+
+func (ls *listSuffixer) construct(base, exponent int) (s suffix, ok bool) {
+	s, ok = ls.beToSuffix[bePair{base, exponent}]
+	return
+}
+
+type suffixHandler struct {
+	decSuffixes listSuffixer
+	binSuffixes listSuffixer
+}
+
+func newSuffixer() suffixer {
+	sh := &suffixHandler{}
+
+	sh.binSuffixes.addSuffix("Ki", bePair{2, 10})
+	sh.binSuffixes.addSuffix("Mi", bePair{2, 20})
+	sh.binSuffixes.addSuffix("Gi", bePair{2, 30})
+	sh.binSuffixes.addSuffix("Ti", bePair{2, 40})
+	sh.binSuffixes.addSuffix("Pi", bePair{2, 50})
+	sh.binSuffixes.addSuffix("Ei", bePair{2, 60})
+	// Don't emit an error when trying to produce
+	// a suffix for 2^0.
+	sh.decSuffixes.addSuffix("", bePair{2, 0})
+
+	sh.decSuffixes.addSuffix("n", bePair{10, -9})
+	sh.decSuffixes.addSuffix("u", bePair{10, -6})
+	sh.decSuffixes.addSuffix("m", bePair{10, -3})
+	sh.decSuffixes.addSuffix("", bePair{10, 0})
+	sh.decSuffixes.addSuffix("k", bePair{10, 3})
+	sh.decSuffixes.addSuffix("M", bePair{10, 6})
+	sh.decSuffixes.addSuffix("G", bePair{10, 9})
+	sh.decSuffixes.addSuffix("T", bePair{10, 12})
+	sh.decSuffixes.addSuffix("P", bePair{10, 15})
+	sh.decSuffixes.addSuffix("E", bePair{10, 18})
+
+	return sh
+}
+
+func (sh *suffixHandler) construct(base, exponent int, fmt Format) (s suffix, ok bool) {
+	switch fmt {
+	case DecimalSI:
+		return sh.decSuffixes.construct(base, exponent)
+	case BinarySI:
+		return sh.binSuffixes.construct(base, exponent)
+	case DecimalExponent:
+		if base != 10 {
+			return "", false
+		}
+		if exponent == 0 {
+			return "", true
+		}
+		return suffix("e" + strconv.FormatInt(int64(exponent), 10)), true
+	}
+	return "", false
+}
+
+func (sh *suffixHandler) interpret(suffix suffix) (base, exponent int, fmt Format, ok bool) {
+	// Try lookup tables first
+	if b, e, ok := sh.decSuffixes.lookup(suffix); ok {
+		return b, e, DecimalSI, true
+	}
+	if b, e, ok := sh.binSuffixes.lookup(suffix); ok {
+		return b, e, BinarySI, true
+	}
+
+	if len(suffix) > 1 && (suffix[0] == 'E' || suffix[0] == 'e') {
+		parsed, err := strconv.ParseInt(string(suffix[1:]), 10, 64)
+		if err != nil {
+			return 0, 0, DecimalExponent, false
+		}
+		return 10, int(parsed), DecimalExponent, true
+	}
+
+	return 0, 0, DecimalExponent, false
+}