Update vendor package github.com/coreos/...

vendor/github.com/coreos/go-semver/NOTICE

@@ -0,0 +1,5 @@
+CoreOS Project
+Copyright 2018 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).

vendor/github.com/coreos/go-semver/semver/semver.go

@@ -1,9 +1,25 @@
+// Copyright 2013-2015 CoreOS, Inc.
+//
+// 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.
+
+// Semantic Versions http://semver.org
 package semver
 
 import (
 	"bytes"
 	"errors"
 	"fmt"
+	"regexp"
 	"strconv"
 	"strings"
 )
@@ -29,35 +45,21 @@ func splitOff(input *string, delim string) (val string) {
 	return val
 }
 
+func New(version string) *Version {
+	return Must(NewVersion(version))
+}
+
 func NewVersion(version string) (*Version, error) {
 	v := Version{}
 
-	dotParts := strings.SplitN(version, ".", 3)
-
-	if len(dotParts) != 3 {
-		return nil, errors.New(fmt.Sprintf("%s is not in dotted-tri format", version))
+	if err := v.Set(version); err != nil {
+		return nil, err
 	}
 
-	v.Metadata = splitOff(&dotParts[2], "+")
-	v.PreRelease = PreRelease(splitOff(&dotParts[2], "-"))
-
-	parsed := make([]int64, 3, 3)
-
-	for i, v := range dotParts[:3] {
-		val, err := strconv.ParseInt(v, 10, 64)
-		parsed[i] = val
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	v.Major = parsed[0]
-	v.Minor = parsed[1]
-	v.Patch = parsed[2]
-
 	return &v, nil
 }
 
+// Must is a helper for wrapping NewVersion and will panic if err is not nil.
 func Must(v *Version, err error) *Version {
 	if err != nil {
 		panic(err)
@@ -65,45 +67,107 @@ func Must(v *Version, err error) *Version {
 	return v
 }
 
-func (v *Version) String() string {
+// Set parses and updates v from the given version string. Implements flag.Value
+func (v *Version) Set(version string) error {
+	metadata := splitOff(&version, "+")
+	preRelease := PreRelease(splitOff(&version, "-"))
+	dotParts := strings.SplitN(version, ".", 3)
+
+	if len(dotParts) != 3 {
+		return fmt.Errorf("%s is not in dotted-tri format", version)
+	}
+
+	if err := validateIdentifier(string(preRelease)); err != nil {
+		return fmt.Errorf("failed to validate pre-release: %v", err)
+	}
+
+	if err := validateIdentifier(metadata); err != nil {
+		return fmt.Errorf("failed to validate metadata: %v", err)
+	}
+
+	parsed := make([]int64, 3, 3)
+
+	for i, v := range dotParts[:3] {
+		val, err := strconv.ParseInt(v, 10, 64)
+		parsed[i] = val
+		if err != nil {
+			return err
+		}
+	}
+
+	v.Metadata = metadata
+	v.PreRelease = preRelease
+	v.Major = parsed[0]
+	v.Minor = parsed[1]
+	v.Patch = parsed[2]
+	return nil
+}
+
+func (v Version) String() string {
 	var buffer bytes.Buffer
 
-	base := fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
-	buffer.WriteString(base)
+	fmt.Fprintf(&buffer, "%d.%d.%d", v.Major, v.Minor, v.Patch)
 
 	if v.PreRelease != "" {
-		buffer.WriteString(fmt.Sprintf("-%s", v.PreRelease))
+		fmt.Fprintf(&buffer, "-%s", v.PreRelease)
 	}
 
 	if v.Metadata != "" {
-		buffer.WriteString(fmt.Sprintf("+%s", v.Metadata))
+		fmt.Fprintf(&buffer, "+%s", v.Metadata)
 	}
 
 	return buffer.String()
 }
 
-func (v *Version) LessThan(versionB Version) bool {
-	versionA := *v
-	cmp := recursiveCompare(versionA.Slice(), versionB.Slice())
-
-	if cmp == 0 {
-		cmp = preReleaseCompare(versionA, versionB)
+func (v *Version) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var data string
+	if err := unmarshal(&data); err != nil {
+		return err
 	}
-
-	if cmp == -1 {
-		return true
-	}
-
-	return false
+	return v.Set(data)
 }
 
-/* Slice converts the comparable parts of the semver into a slice of strings */
-func (v *Version) Slice() []int64 {
+func (v Version) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + v.String() + `"`), nil
+}
+
+func (v *Version) UnmarshalJSON(data []byte) error {
+	l := len(data)
+	if l == 0 || string(data) == `""` {
+		return nil
+	}
+	if l < 2 || data[0] != '"' || data[l-1] != '"' {
+		return errors.New("invalid semver string")
+	}
+	return v.Set(string(data[1 : l-1]))
+}
+
+// Compare tests if v is less than, equal to, or greater than versionB,
+// returning -1, 0, or +1 respectively.
+func (v Version) Compare(versionB Version) int {
+	if cmp := recursiveCompare(v.Slice(), versionB.Slice()); cmp != 0 {
+		return cmp
+	}
+	return preReleaseCompare(v, versionB)
+}
+
+// Equal tests if v is equal to versionB.
+func (v Version) Equal(versionB Version) bool {
+	return v.Compare(versionB) == 0
+}
+
+// LessThan tests if v is less than versionB.
+func (v Version) LessThan(versionB Version) bool {
+	return v.Compare(versionB) < 0
+}
+
+// Slice converts the comparable parts of the semver into a slice of integers.
+func (v Version) Slice() []int64 {
 	return []int64{v.Major, v.Minor, v.Patch}
 }
 
-func (p *PreRelease) Slice() []string {
-	preRelease := string(*p)
+func (p PreRelease) Slice() []string {
+	preRelease := string(p)
 	return strings.Split(preRelease, ".")
 }
 
@@ -119,7 +183,7 @@ func preReleaseCompare(versionA Version, versionB Version) int {
 		return -1
 	}
 
-	// If there is a prelease, check and compare each part.
+	// If there is a prerelease, check and compare each part.
 	return recursivePreReleaseCompare(a.Slice(), b.Slice())
 }
 
@@ -141,9 +205,12 @@ func recursiveCompare(versionA []int64, versionB []int64) int {
 }
 
 func recursivePreReleaseCompare(versionA []string, versionB []string) int {
-	// Handle slice length disparity.
+	// A larger set of pre-release fields has a higher precedence than a smaller set,
+	// if all of the preceding identifiers are equal.
 	if len(versionA) == 0 {
-		// Nothing to compare too, so we return 0
+		if len(versionB) > 0 {
+			return -1
+		}
 		return 0
 	} else if len(versionB) == 0 {
 		// We're longer than versionB so return 1.
@@ -153,7 +220,8 @@ func recursivePreReleaseCompare(versionA []string, versionB []string) int {
 	a := versionA[0]
 	b := versionB[0]
 
-	aInt := false; bInt := false
+	aInt := false
+	bInt := false
 
 	aI, err := strconv.Atoi(versionA[0])
 	if err == nil {
@@ -165,6 +233,13 @@ func recursivePreReleaseCompare(versionA []string, versionB []string) int {
 		bInt = true
 	}
 
+	// Numeric identifiers always have lower precedence than non-numeric identifiers.
+	if aInt && !bInt {
+		return -1
+	} else if !aInt && bInt {
+		return 1
+	}
+
 	// Handle Integer Comparison
 	if aInt && bInt {
 		if aI > bI {
@@ -207,3 +282,15 @@ func (v *Version) BumpPatch() {
 	v.PreRelease = PreRelease("")
 	v.Metadata = ""
 }
+
+// validateIdentifier makes sure the provided identifier satisfies semver spec
+func validateIdentifier(id string) error {
+	if id != "" && !reIdentifier.MatchString(id) {
+		return fmt.Errorf("%s is not a valid semver identifier", id)
+	}
+	return nil
+}
+
+// reIdentifier is a regular expression used to check that pre-release and metadata
+// identifiers satisfy the spec requirements
+var reIdentifier = regexp.MustCompile(`^[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*$`)

vendor/github.com/coreos/go-semver/semver/sort.go

@@ -1,3 +1,17 @@
+// Copyright 2013-2015 CoreOS, Inc.
+//
+// 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 semver
 
 import (