Move to vendor dir

vendor/github.com/cppforlife/go-semi-semantic/version/ver_seg_comp_int.go

@@ -0,0 +1,49 @@
+package version
+
+import (
+	"errors"
+	"regexp"
+	"strconv"
+)
+
+var (
+	verSegCompIntRegexp = regexp.MustCompile(`\A[0-9]+\z`)
+)
+
+type VerSegCompInt struct{ I int }
+
+func NewVerSegCompIntFromString(piece string) (VerSegCompInt, bool, error) {
+	if !verSegCompIntRegexp.MatchString(piece) {
+		return VerSegCompInt{}, false, nil
+	}
+
+	i, err := strconv.Atoi(piece)
+	if err != nil {
+		return VerSegCompInt{}, true, err
+	}
+
+	return VerSegCompInt{i}, true, nil
+}
+
+func (i VerSegCompInt) Validate() error {
+	if i.I < 0 {
+		return errors.New("Expected integer component to be greater than or equal to 0")
+	}
+
+	return nil
+}
+
+func (i VerSegCompInt) Compare(other VerSegComp) int {
+	otherTyped := other.(VerSegCompInt)
+	switch {
+	case i.I < otherTyped.I:
+		return -1
+	case i.I == otherTyped.I:
+		return 0
+	case i.I > otherTyped.I:
+		return 1
+	}
+	panic("unreachable")
+}
+
+func (i VerSegCompInt) AsString() string { return strconv.Itoa(i.I) }

vendor/github.com/cppforlife/go-semi-semantic/version/ver_seg_comp_str.go

@@ -0,0 +1,43 @@
+package version
+
+import (
+	"errors"
+	"regexp"
+)
+
+var (
+	verSegCompStrRegexp = regexp.MustCompile(`\A[0-9A-Za-z_\-]+\z`)
+)
+
+type VerSegCompStr struct{ S string }
+
+func NewVerSegCompStrFromString(piece string) (VerSegCompStr, bool) {
+	if !verSegCompStrRegexp.MatchString(piece) {
+		return VerSegCompStr{}, false
+	}
+
+	return VerSegCompStr{piece}, true
+}
+
+func (s VerSegCompStr) Validate() error {
+	if len(s.S) == 0 {
+		return errors.New("Expected string component to be non-empty")
+	}
+
+	return nil
+}
+
+func (s VerSegCompStr) Compare(other VerSegComp) int {
+	otherTyped := other.(VerSegCompStr)
+	switch {
+	case s.S < otherTyped.S:
+		return -1
+	case s.S == otherTyped.S:
+		return 0
+	case s.S > otherTyped.S:
+		return 1
+	}
+	panic("unreachable")
+}
+
+func (s VerSegCompStr) AsString() string { return s.S }

vendor/github.com/cppforlife/go-semi-semantic/version/version.go

@@ -0,0 +1,152 @@
+package version
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+)
+
+var (
+	versionRegexp = matchingRegexp{regexp.MustCompile(`\A(?P<release>[0-9A-Za-z_\.]+)(\-(?P<pre_release>[0-9A-Za-z_\-\.]+))?(\+(?P<post_release>[0-9A-Za-z_\-\.]+))?\z`)}
+)
+
+type matchingRegexp struct {
+	*regexp.Regexp
+}
+
+type Version struct {
+	Release, PreRelease, PostRelease VersionSegment
+
+	Segments []VersionSegment
+}
+
+func NewVersionFromString(v string) (Version, error) {
+	var err error
+
+	if len(v) == 0 {
+		return Version{}, errors.New("Expected version to be non-empty string")
+	}
+
+	captures := versionRegexp.FindStringSubmatchMap(v)
+	if len(captures) == 0 {
+		errMsg := fmt.Sprintf("Expected version '%s' to match version format", v)
+		return Version{}, errors.New(errMsg)
+	}
+
+	release := VersionSegment{}
+	preRelease := VersionSegment{}
+	postRelease := VersionSegment{}
+
+	if releaseStr, ok := captures["release"]; ok {
+		release, err = NewVersionSegmentFromString(releaseStr)
+		if err != nil {
+			return Version{}, err
+		}
+	}
+
+	if preReleaseStr, ok := captures["pre_release"]; ok {
+		preRelease, err = NewVersionSegmentFromString(preReleaseStr)
+		if err != nil {
+			return Version{}, err
+		}
+	}
+
+	if postReleaseStr, ok := captures["post_release"]; ok {
+		postRelease, err = NewVersionSegmentFromString(postReleaseStr)
+		if err != nil {
+			return Version{}, err
+		}
+	}
+
+	return NewVersion(release, preRelease, postRelease)
+}
+
+func NewVersion(release, preRelease, postRelease VersionSegment) (Version, error) {
+	if release.Empty() {
+		return Version{}, errors.New("Expected to non-empty release segment for constructing version")
+	}
+
+	version := Version{
+		Release:     release,
+		PreRelease:  preRelease,
+		PostRelease: postRelease,
+		Segments:    []VersionSegment{release, preRelease, postRelease},
+	}
+
+	return version, nil
+}
+
+func (v Version) String() string { return v.AsString() }
+
+func (v Version) AsString() string {
+	result := v.Release.AsString()
+
+	if !v.PreRelease.Empty() {
+		result += "-" + v.PreRelease.AsString()
+	}
+
+	if !v.PostRelease.Empty() {
+		result += "+" + v.PostRelease.AsString()
+	}
+
+	return result
+}
+
+func (v Version) Compare(other Version) int {
+	result := v.Release.Compare(other.Release)
+	if result != 0 {
+		return result
+	}
+
+	if !v.PreRelease.Empty() || !other.PreRelease.Empty() {
+		if v.PreRelease.Empty() {
+			return 1
+		}
+		if other.PreRelease.Empty() {
+			return -1
+		}
+		result = v.PreRelease.Compare(other.PreRelease)
+		if result != 0 {
+			return result
+		}
+	}
+
+	if !v.PostRelease.Empty() || !other.PostRelease.Empty() {
+		if v.PostRelease.Empty() {
+			return -1
+		}
+		if other.PostRelease.Empty() {
+			return 1
+		}
+		result = v.PostRelease.Compare(other.PostRelease)
+		if result != 0 {
+			return result
+		}
+	}
+
+	return 0
+}
+
+func (v Version) IsEq(other Version) bool { return v.Compare(other) == 0 }
+func (v Version) IsGt(other Version) bool { return v.Compare(other) == 1 }
+func (v Version) IsLt(other Version) bool { return v.Compare(other) == -1 }
+
+func (r *matchingRegexp) FindStringSubmatchMap(s string) map[string]string {
+	captures := map[string]string{}
+
+	match := r.FindStringSubmatch(s)
+	if match == nil {
+		return captures
+	}
+
+	for i, name := range r.SubexpNames() {
+		// 0 is a whole regex
+		if i == 0 || name == "" || match[i] == "" {
+			continue
+		}
+
+		captures[name] = match[i]
+	}
+
+	return captures
+}

vendor/github.com/cppforlife/go-semi-semantic/version/version_segment.go

@@ -0,0 +1,143 @@
+package version
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+)
+
+type VerSegComp interface {
+	Validate() error
+	// Compare should panic if incompatible interface is given
+	Compare(VerSegComp) int
+	AsString() string
+}
+
+type VersionSegment struct {
+	Components []VerSegComp
+}
+
+func NewVersionSegmentFromString(v string) (VersionSegment, error) {
+	pieces := strings.Split(v, ".")
+
+	components := []VerSegComp{}
+
+	for _, p := range pieces {
+		i, matchedI, err := NewVerSegCompIntFromString(p)
+		if err != nil {
+			errMsg := fmt.Sprintf("Expected component '%s' from version segment '%s' to be a parseable integer: %s", p, v, err)
+			return VersionSegment{}, errors.New(errMsg)
+		}
+
+		if matchedI {
+			components = append(components, i)
+		} else if s, matched := NewVerSegCompStrFromString(p); matched {
+			components = append(components, s)
+		} else {
+			errMsg := fmt.Sprintf("Expected component '%s' from version segment '%s' to be either an integer or a formatted string", p, v)
+			return VersionSegment{}, errors.New(errMsg)
+		}
+	}
+
+	return VersionSegment{components}, nil
+}
+
+func NewVersionSegment(components []VerSegComp) (VersionSegment, error) {
+	if len(components) == 0 {
+		return VersionSegment{}, errors.New("Expected version segment to be build from at least one component")
+	}
+
+	for _, c := range components {
+		err := c.Validate()
+		if err != nil {
+			return VersionSegment{}, err
+		}
+	}
+
+	return VersionSegment{components}, nil
+}
+
+func (s VersionSegment) Empty() bool { return len(s.Components) == 0 }
+
+func (s VersionSegment) AsString() string {
+	result := ""
+
+	for i, c := range s.Components {
+		result += c.AsString()
+
+		if i < len(s.Components)-1 {
+			result += "."
+		}
+	}
+
+	return result
+}
+
+func (s VersionSegment) Compare(other VersionSegment) int {
+	a := s.Components
+	b := other.Components
+
+	if len(a) > len(b) {
+		comparison := s.compareArrays(a[0:len(b)], b)
+		if comparison != 0 {
+			return comparison
+		}
+		if !s.isAllZeros(a[len(b):len(a)]) {
+			return 1
+		}
+		return 0
+	}
+
+	if len(a) < len(b) {
+		comparison := s.compareArrays(a, b[0:len(a)])
+		if comparison != 0 {
+			return comparison
+		}
+		if !s.isAllZeros(b[len(a):len(b)]) {
+			return -1
+		}
+		return 0
+	}
+
+	return s.compareArrays(a, b)
+}
+
+func (s VersionSegment) IsEq(other VersionSegment) bool { return s.Compare(other) == 0 }
+func (s VersionSegment) IsGt(other VersionSegment) bool { return s.Compare(other) == 1 }
+func (s VersionSegment) IsLt(other VersionSegment) bool { return s.Compare(other) == -1 }
+
+// compareArrays compares 2 equally sized a & b
+func (s VersionSegment) compareArrays(a, b []VerSegComp) int {
+	for i, v1 := range a {
+		v2 := b[i]
+
+		_, v1IsStr := v1.(VerSegCompStr)
+		_, v1IsInt := v1.(VerSegCompInt)
+		_, v2IsStr := v2.(VerSegCompStr)
+		_, v2IsInt := v2.(VerSegCompInt)
+
+		if v1IsStr && v2IsInt {
+			return 1
+		} else if v1IsInt && v2IsStr {
+			return -1
+		}
+
+		comparison := v1.Compare(v2)
+		if comparison != 0 {
+			return comparison
+		}
+	}
+
+	return 0
+}
+
+func (s VersionSegment) isAllZeros(a []VerSegComp) bool {
+	for _, v := range a {
+		vTyped, ok := v.(VerSegCompInt)
+		if !ok || vTyped.I != 0 {
+			return false
+		}
+	}
+
+	return true
+}