[Vendor] Switch go-version lib (#12719)

* vendor: switch from "mcuadros/go-version" to "hashicorp/go-version"

* Adapt P1

* simplify

* fix lint

* adapt

* fix lint & rm old code

* no deadlock

* rm RWMutex and check GoVersion only 1-time

* Copyright header

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

go.mod

@@ -51,6 +51,7 @@ require (
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/context v1.1.1
 	github.com/hashicorp/go-retryablehttp v0.6.6 // indirect
+	github.com/hashicorp/go-version v1.2.1
 	github.com/huandu/xstrings v1.3.0
 	github.com/issue9/assert v1.3.2 // indirect
 	github.com/issue9/identicon v1.0.1
@@ -65,7 +66,6 @@ require (
 	github.com/markbates/goth v1.61.2
 	github.com/mattn/go-isatty v0.0.12
 	github.com/mattn/go-sqlite3 v1.14.0
-	github.com/mcuadros/go-version v0.0.0-20190308113854-92cdf37c5b75
 	github.com/mgechev/dots v0.0.0-20190921121421-c36f7dcfbb81
 	github.com/mgechev/revive v1.0.2
 	github.com/mholt/archiver/v3 v3.3.0

go.sum

@@ -482,6 +482,8 @@ github.com/hashicorp/go-sockaddr v1.0.0/go.mod h1:7Xibr9yA9JjQq1JpNB2Vw7kxv8xerX
 github.com/hashicorp/go-syslog v1.0.0/go.mod h1:qPfqrKkXGihmCqbJM2mZgkZGvKG1dFdvsLplgctolz4=
 github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
 github.com/hashicorp/go-uuid v1.0.1/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
+github.com/hashicorp/go-version v1.2.1 h1:zEfKbn2+PDgroKdiOzqiE8rsmLqU2uwi5PB5pBJ3TkI=
+github.com/hashicorp/go-version v1.2.1/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/hashicorp/go.net v0.0.1/go.mod h1:hjKkEWcCURg++eb33jQU7oqQcI9XDCnUzHA0oac0k90=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@@ -659,8 +661,6 @@ github.com/mattn/go-sqlite3 v1.14.0 h1:mLyGNKR8+Vv9CAU7PphKa2hkEqxxhn8i32J6FPj1/
 github.com/mattn/go-sqlite3 v1.14.0/go.mod h1:JIl7NbARA7phWnGvh0LKTyg7S9BA+6gx71ShQilpsus=
 github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
-github.com/mcuadros/go-version v0.0.0-20190308113854-92cdf37c5b75 h1:Pijfgr7ZuvX7QIQiEwLdRVr3RoMG+i0SbBO1Qu+7yVk=
-github.com/mcuadros/go-version v0.0.0-20190308113854-92cdf37c5b75/go.mod h1:76rfSfYPWj01Z85hUf/ituArm797mNKcvINh1OlsZKo=
 github.com/mgechev/dots v0.0.0-20190921121421-c36f7dcfbb81 h1:QASJXOGm2RZ5Ardbc86qNFvby9AqkLDibfChMtAg5QM=
 github.com/mgechev/dots v0.0.0-20190921121421-c36f7dcfbb81/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
 github.com/mgechev/revive v1.0.2 h1:v0NxxQ7fSFz/u1NQydPo6EGdq7va0J1BtsZmae6kzUg=

modules/git/command.go

@@ -1,3 +1,4 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
 // Copyright 2015 The Gogs Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
@@ -11,12 +12,10 @@ import (
 	"io"
 	"os"
 	"os/exec"
-	"runtime"
 	"strings"
 	"time"
 
 	"code.gitea.io/gitea/modules/process"
-	"github.com/mcuadros/go-version"
 )
 
 var (
@@ -132,7 +131,7 @@ func (c *Command) RunInDirTimeoutEnvFullPipelineFunc(env []string, timeout time.
 	}
 
 	// TODO: verify if this is still needed in golang 1.15
-	if version.Compare(runtime.Version(), "go1.15", "<") {
+	if goVersionLessThan115 {
 		cmd.Env = append(cmd.Env, "GODEBUG=asyncpreemptoff=1")
 	}
 	cmd.Dir = dir

modules/git/commit.go

@@ -21,7 +21,6 @@ import (
 	"strings"
 
 	"github.com/go-git/go-git/v5/plumbing/object"
-	"github.com/mcuadros/go-version"
 )
 
 // Commit represents a git commit.
@@ -470,7 +469,7 @@ func (c *Commit) GetSubModule(entryname string) (*SubModule, error) {
 
 // GetBranchName gets the closest branch name (as returned by 'git name-rev --name-only')
 func (c *Commit) GetBranchName() (string, error) {
-	binVersion, err := BinVersion()
+	err := LoadGitVersion()
 	if err != nil {
 		return "", fmt.Errorf("Git version missing: %v", err)
 	}
@@ -478,7 +477,7 @@ func (c *Commit) GetBranchName() (string, error) {
 	args := []string{
 		"name-rev",
 	}
-	if version.Compare(binVersion, "2.13.0", ">=") {
+	if CheckGitVersionConstraint(">= 2.13.0") == nil {
 		args = append(args, "--exclude", "refs/tags/*")
 	}
 	args = append(args, "--name-only", "--no-undefined", c.ID.String())

modules/git/git.go

@@ -15,14 +15,9 @@ import (
 
 	"code.gitea.io/gitea/modules/process"
 
-	"github.com/mcuadros/go-version"
+	"github.com/hashicorp/go-version"
 )
 
-// Version return this package's current version
-func Version() string {
-	return "0.4.2"
-}
-
 var (
 	// Debug enables verbose logging on everything.
 	// This should be false in case Gogs starts in SSH mode.
@@ -39,7 +34,10 @@ var (
 	// DefaultContext is the default context to run git commands in
 	DefaultContext = context.Background()
 
-	gitVersion string
+	gitVersion *version.Version
+
+	// will be checked on Init
+	goVersionLessThan115 = true
 )
 
 func log(format string, args ...interface{}) {
@@ -55,31 +53,43 @@ func log(format string, args ...interface{}) {
 	}
 }
 
-// BinVersion returns current Git version from shell.
-func BinVersion() (string, error) {
-	if len(gitVersion) > 0 {
-		return gitVersion, nil
+// LocalVersion returns current Git version from shell.
+func LocalVersion() (*version.Version, error) {
+	if err := LoadGitVersion(); err != nil {
+		return nil, err
+	}
+	return gitVersion, nil
+}
+
+// LoadGitVersion returns current Git version from shell.
+func LoadGitVersion() error {
+	// doesn't need RWMutex because its exec by Init()
+	if gitVersion != nil {
+		return nil
 	}
 
 	stdout, err := NewCommand("version").Run()
 	if err != nil {
-		return "", err
+		return err
 	}
 
 	fields := strings.Fields(stdout)
 	if len(fields) < 3 {
-		return "", fmt.Errorf("not enough output: %s", stdout)
+		return fmt.Errorf("not enough output: %s", stdout)
 	}
 
+	var versionString string
+
 	// Handle special case on Windows.
 	i := strings.Index(fields[2], "windows")
 	if i >= 1 {
-		gitVersion = fields[2][:i-1]
-		return gitVersion, nil
+		versionString = fields[2][:i-1]
+	} else {
+		versionString = fields[2]
 	}
 
-	gitVersion = fields[2]
-	return gitVersion, nil
+	gitVersion, err = version.NewVersion(versionString)
+	return err
 }
 
 // SetExecutablePath changes the path of git executable and checks the file permission and version.
@@ -94,11 +104,17 @@ func SetExecutablePath(path string) error {
 	}
 	GitExecutable = absPath
 
-	gitVersion, err := BinVersion()
+	err = LoadGitVersion()
 	if err != nil {
 		return fmt.Errorf("Git version missing: %v", err)
 	}
-	if version.Compare(gitVersion, GitVersionRequired, "<") {
+
+	versionRequired, err := version.NewVersion(GitVersionRequired)
+	if err != nil {
+		return err
+	}
+
+	if gitVersion.LessThan(versionRequired) {
 		return fmt.Errorf("Git version not supported. Requires version > %v", GitVersionRequired)
 	}
 
@@ -108,6 +124,20 @@ func SetExecutablePath(path string) error {
 // Init initializes git module
 func Init(ctx context.Context) error {
 	DefaultContext = ctx
+
+	// Save current git version on init to gitVersion otherwise it would require an RWMutex
+	if err := LoadGitVersion(); err != nil {
+		return err
+	}
+
+	// Save if the go version used to compile gitea is greater or equal 1.15
+	runtimeVersion, err := version.NewVersion(strings.TrimPrefix(runtime.Version(), "go"))
+	if err != nil {
+		return err
+	}
+	version115, _ := version.NewVersion("1.15")
+	goVersionLessThan115 = runtimeVersion.LessThan(version115)
+
 	// Git requires setting user.name and user.email in order to commit changes - if they're not set just add some defaults
 	for configKey, defaultValue := range map[string]string{"user.name": "Gitea", "user.email": "gitea@fake.local"} {
 		if err := checkAndSetConfig(configKey, defaultValue, false); err != nil {
@@ -120,13 +150,13 @@ func Init(ctx context.Context) error {
 		return err
 	}
 
-	if version.Compare(gitVersion, "2.10", ">=") {
+	if CheckGitVersionConstraint(">= 2.10") == nil {
 		if err := checkAndSetConfig("receive.advertisePushOptions", "true", true); err != nil {
 			return err
 		}
 	}
 
-	if version.Compare(gitVersion, "2.18", ">=") {
+	if CheckGitVersionConstraint(">= 2.18") == nil {
 		if err := checkAndSetConfig("core.commitGraph", "true", true); err != nil {
 			return err
 		}
@@ -143,6 +173,21 @@ func Init(ctx context.Context) error {
 	return nil
 }
 
+// CheckGitVersionConstraint check version constrain against local installed git version
+func CheckGitVersionConstraint(constraint string) error {
+	if err := LoadGitVersion(); err != nil {
+		return err
+	}
+	check, err := version.NewConstraint(constraint)
+	if err != nil {
+		return err
+	}
+	if !check.Check(gitVersion) {
+		return fmt.Errorf("installed git binary  %s does not satisfy version constraint %s", gitVersion.Original(), constraint)
+	}
+	return nil
+}
+
 func checkAndSetConfig(key, defaultValue string, forceToDefault bool) error {
 	stdout, stderr, err := process.GetManager().Exec("git.Init(get setting)", GitExecutable, "config", "--get", key)
 	if err != nil {

modules/git/repo_attribute.go

@@ -7,8 +7,6 @@ package git
 import (
 	"bytes"
 	"fmt"
-
-	"github.com/mcuadros/go-version"
 )
 
 // CheckAttributeOpts represents the possible options to CheckAttribute
@@ -21,7 +19,7 @@ type CheckAttributeOpts struct {
 
 // CheckAttribute return the Blame object of file
 func (repo *Repository) CheckAttribute(opts CheckAttributeOpts) (map[string]map[string]string, error) {
-	binVersion, err := BinVersion()
+	err := LoadGitVersion()
 	if err != nil {
 		return nil, fmt.Errorf("Git version missing: %v", err)
 	}
@@ -42,7 +40,7 @@ func (repo *Repository) CheckAttribute(opts CheckAttributeOpts) (map[string]map[
 	}
 
 	// git check-attr --cached first appears in git 1.7.8
-	if opts.CachedOnly && version.Compare(binVersion, "1.7.8", ">=") {
+	if opts.CachedOnly && CheckGitVersionConstraint(">= 1.7.8") == nil {
 		cmdArgs = append(cmdArgs, "--cached")
 	}
 

modules/git/repo_commit.go

@@ -14,7 +14,6 @@ import (
 
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/object"
-	"github.com/mcuadros/go-version"
 )
 
 // GetRefCommitID returns the last commit ID string of given reference (branch or tag).
@@ -470,7 +469,7 @@ func (repo *Repository) getCommitsBeforeLimit(id SHA1, num int) (*list.List, err
 }
 
 func (repo *Repository) getBranches(commit *Commit, limit int) ([]string, error) {
-	if version.Compare(gitVersion, "2.7.0", ">=") {
+	if CheckGitVersionConstraint(">= 2.7.0") == nil {
 		stdout, err := NewCommand("for-each-ref", "--count="+strconv.Itoa(limit), "--format=%(refname:strip=2)", "--contains", commit.ID.String(), BranchPrefix).RunInDir(repo.Path)
 		if err != nil {
 			return nil, err

modules/git/repo_tag.go

@@ -10,7 +10,6 @@ import (
 	"strings"
 
 	"github.com/go-git/go-git/v5/plumbing"
-	"github.com/mcuadros/go-version"
 )
 
 // TagPrefix tags prefix path on the repository
@@ -239,8 +238,6 @@ func (repo *Repository) GetTags() ([]string, error) {
 		return nil
 	})
 
-	version.Sort(tagNames)
-
 	// Reverse order
 	for i := 0; i < len(tagNames)/2; i++ {
 		j := len(tagNames) - i - 1

modules/git/repo_tree.go

@@ -11,8 +11,6 @@ import (
 	"os"
 	"strings"
 	"time"
-
-	"github.com/mcuadros/go-version"
 )
 
 func (repo *Repository) getTree(id SHA1) (*Tree, error) {
@@ -65,7 +63,7 @@ type CommitTreeOpts struct {
 
 // CommitTree creates a commit from a given tree id for the user with provided message
 func (repo *Repository) CommitTree(sig *Signature, tree *Tree, opts CommitTreeOpts) (SHA1, error) {
-	binVersion, err := BinVersion()
+	err := LoadGitVersion()
 	if err != nil {
 		return SHA1{}, err
 	}
@@ -91,11 +89,11 @@ func (repo *Repository) CommitTree(sig *Signature, tree *Tree, opts CommitTreeOp
 	_, _ = messageBytes.WriteString(opts.Message)
 	_, _ = messageBytes.WriteString("\n")
 
-	if version.Compare(binVersion, "1.7.9", ">=") && (opts.KeyID != "" || opts.AlwaysSign) {
+	if CheckGitVersionConstraint(">= 1.7.9") == nil && (opts.KeyID != "" || opts.AlwaysSign) {
 		cmd.AddArguments(fmt.Sprintf("-S%s", opts.KeyID))
 	}
 
-	if version.Compare(binVersion, "2.0.0", ">=") && opts.NoGPGSign {
+	if CheckGitVersionConstraint(">= 2.0.0") == nil && opts.NoGPGSign {
 		cmd.AddArguments("--no-gpg-sign")
 	}
 

modules/repofiles/temp_repo.go

@@ -19,8 +19,6 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/services/gitdiff"
-
-	"github.com/mcuadros/go-version"
 )
 
 // TemporaryUploadRepository is a type to wrap our upload repositories as a shallow clone
@@ -196,7 +194,7 @@ func (t *TemporaryUploadRepository) CommitTreeWithDate(author, committer *models
 	authorSig := author.NewGitSig()
 	committerSig := committer.NewGitSig()
 
-	binVersion, err := git.BinVersion()
+	err := git.LoadGitVersion()
 	if err != nil {
 		return "", fmt.Errorf("Unable to get git version: %v", err)
 	}
@@ -218,11 +216,11 @@ func (t *TemporaryUploadRepository) CommitTreeWithDate(author, committer *models
 	args := []string{"commit-tree", treeHash, "-p", "HEAD"}
 
 	// Determine if we should sign
-	if version.Compare(binVersion, "1.7.9", ">=") {
+	if git.CheckGitVersionConstraint(">= 1.7.9") == nil {
 		sign, keyID, _ := t.repo.SignCRUDAction(author, t.basePath, "HEAD")
 		if sign {
 			args = append(args, "-S"+keyID)
-		} else if version.Compare(binVersion, "2.0.0", ">=") {
+		} else if git.CheckGitVersionConstraint(">= 2.0.0") == nil {
 			args = append(args, "--no-gpg-sign")
 		}
 	}
@@ -309,7 +307,7 @@ func (t *TemporaryUploadRepository) DiffIndex() (*gitdiff.Diff, error) {
 
 // CheckAttribute checks the given attribute of the provided files
 func (t *TemporaryUploadRepository) CheckAttribute(attribute string, args ...string) (map[string]map[string]string, error) {
-	binVersion, err := git.BinVersion()
+	err := git.LoadGitVersion()
 	if err != nil {
 		log.Error("Error retrieving git version: %v", err)
 		return nil, err
@@ -321,7 +319,7 @@ func (t *TemporaryUploadRepository) CheckAttribute(attribute string, args ...str
 	cmdArgs := []string{"check-attr", "-z", attribute}
 
 	// git check-attr --cached first appears in git 1.7.8
-	if version.Compare(binVersion, "1.7.8", ">=") {
+	if git.CheckGitVersionConstraint(">= 1.7.8") == nil {
 		cmdArgs = append(cmdArgs, "--cached")
 	}
 	cmdArgs = append(cmdArgs, "--")

modules/repository/init.go

@@ -19,7 +19,6 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
 
-	"github.com/mcuadros/go-version"
 	"github.com/unknwon/com"
 )
 
@@ -122,7 +121,7 @@ func initRepoCommit(tmpPath string, repo *models.Repository, u *models.User, def
 		return fmt.Errorf("git add --all: %v", err)
 	}
 
-	binVersion, err := git.BinVersion()
+	err = git.LoadGitVersion()
 	if err != nil {
 		return fmt.Errorf("Unable to get git version: %v", err)
 	}
@@ -132,11 +131,11 @@ func initRepoCommit(tmpPath string, repo *models.Repository, u *models.User, def
 		"-m", "Initial commit",
 	}
 
-	if version.Compare(binVersion, "1.7.9", ">=") {
+	if git.CheckGitVersionConstraint(">= 1.7.9") == nil {
 		sign, keyID, _ := models.SignInitialCommit(tmpPath, u)
 		if sign {
 			args = append(args, "-S"+keyID)
-		} else if version.Compare(binVersion, "2.0.0", ">=") {
+		} else if git.CheckGitVersionConstraint(">= 2.0.0") == nil {
 			args = append(args, "--no-gpg-sign")
 		}
 	}

modules/setting/git.go

@@ -9,8 +9,6 @@ import (
 
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
-
-	version "github.com/mcuadros/go-version"
 )
 
 var (
@@ -71,20 +69,20 @@ func newGit() {
 	}
 	git.DefaultCommandExecutionTimeout = time.Duration(Git.Timeout.Default) * time.Second
 
-	binVersion, err := git.BinVersion()
+	version, err := git.LocalVersion()
 	if err != nil {
 		log.Fatal("Error retrieving git version: %v", err)
 	}
 
-	if version.Compare(binVersion, "2.9", ">=") {
+	if git.CheckGitVersionConstraint(">= 2.9") == nil {
 		// Explicitly disable credential helper, otherwise Git credentials might leak
 		git.GlobalCommandArgs = append(git.GlobalCommandArgs, "-c", "credential.helper=")
 	}
 
 	var format = "Git Version: %s"
-	var args = []interface{}{binVersion}
+	var args = []interface{}{version.Original()}
 	// Since git wire protocol has been released from git v2.18
-	if Git.EnableAutoGitWireProtocol && version.Compare(binVersion, "2.18", ">=") {
+	if Git.EnableAutoGitWireProtocol && git.CheckGitVersionConstraint(">= 2.18") == nil {
 		git.GlobalCommandArgs = append(git.GlobalCommandArgs, "-c", "protocol.version=2")
 		format += ", Wire Protocol %s Enabled"
 		args = append(args, "Version 2") // for focus color

modules/setting/setting.go

@@ -28,7 +28,6 @@ import (
 	"code.gitea.io/gitea/modules/user"
 
 	shellquote "github.com/kballard/go-shellquote"
-	version "github.com/mcuadros/go-version"
 	"github.com/unknwon/com"
 	ini "gopkg.in/ini.v1"
 	"strk.kbt.io/projects/go/libravatar"
@@ -479,12 +478,12 @@ func CheckLFSVersion() {
 		//Disable LFS client hooks if installed for the current OS user
 		//Needs at least git v2.1.2
 
-		binVersion, err := git.BinVersion()
+		err := git.LoadGitVersion()
 		if err != nil {
 			log.Fatal("Error retrieving git version: %v", err)
 		}
 
-		if !version.Compare(binVersion, "2.1.2", ">=") {
+		if git.CheckGitVersionConstraint(">= 2.1.2") != nil {
 			LFS.StartServer = false
 			log.Error("LFS server support needs at least Git v2.1.2")
 		} else {

routers/admin/admin.go

@@ -243,7 +243,9 @@ func Config(ctx *context.Context) {
 	ctx.Data["DisableRouterLog"] = setting.DisableRouterLog
 	ctx.Data["RunUser"] = setting.RunUser
 	ctx.Data["RunMode"] = strings.Title(macaron.Env)
-	ctx.Data["GitVersion"], _ = git.BinVersion()
+	if version, err := git.LocalVersion(); err == nil {
+		ctx.Data["GitVersion"] = version.Original()
+	}
 	ctx.Data["RepoRootPath"] = setting.RepoRootPath
 	ctx.Data["CustomRootPath"] = setting.CustomPath
 	ctx.Data["StaticRootPath"] = setting.StaticRootPath

routers/repo/lfs.go

@@ -33,7 +33,6 @@ import (
 	gogit "github.com/go-git/go-git/v5"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/object"
-	"github.com/mcuadros/go-version"
 	"github.com/unknwon/com"
 )
 
@@ -541,7 +540,7 @@ func LFSPointerFiles(ctx *context.Context) {
 		return
 	}
 	ctx.Data["PageIsSettingsLFS"] = true
-	binVersion, err := git.BinVersion()
+	err := git.LoadGitVersion()
 	if err != nil {
 		log.Fatal("Error retrieving git version: %v", err)
 	}
@@ -586,7 +585,7 @@ func LFSPointerFiles(ctx *context.Context) {
 	go createPointerResultsFromCatFileBatch(catFileBatchReader, &wg, pointerChan, ctx.Repo.Repository, ctx.User)
 	go pipeline.CatFileBatch(shasToBatchReader, catFileBatchWriter, &wg, basePath)
 	go pipeline.BlobsLessThan1024FromCatFileBatchCheck(catFileCheckReader, shasToBatchWriter, &wg)
-	if !version.Compare(binVersion, "2.6.0", ">=") {
+	if git.CheckGitVersionConstraint(">= 2.6.0") != nil {
 		revListReader, revListWriter := io.Pipe()
 		shasToCheckReader, shasToCheckWriter := io.Pipe()
 		wg.Add(2)

services/mirror/mirror.go

@@ -23,7 +23,6 @@ import (
 	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
 
-	"github.com/mcuadros/go-version"
 	"github.com/unknwon/com"
 )
 
@@ -43,11 +42,11 @@ func readAddress(m *models.Mirror) {
 
 func remoteAddress(repoPath string) (string, error) {
 	var cmd *git.Command
-	binVersion, err := git.BinVersion()
+	err := git.LoadGitVersion()
 	if err != nil {
 		return "", err
 	}
-	if version.Compare(binVersion, "2.7", ">=") {
+	if git.CheckGitVersionConstraint(">= 2.7") == nil {
 		cmd = git.NewCommand("remote", "get-url", "origin")
 	} else {
 		cmd = git.NewCommand("config", "--get", "remote.origin.url")

services/pull/merge.go

@@ -25,8 +25,6 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/timeutil"
 	issue_service "code.gitea.io/gitea/services/issue"
-
-	"github.com/mcuadros/go-version"
 )
 
 // Merge merges pull request to base repository.
@@ -113,9 +111,9 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
 
 // rawMerge perform the merge operation without changing any pull information in database
 func rawMerge(pr *models.PullRequest, doer *models.User, mergeStyle models.MergeStyle, message string) (string, error) {
-	binVersion, err := git.BinVersion()
+	err := git.LoadGitVersion()
 	if err != nil {
-		log.Error("git.BinVersion: %v", err)
+		log.Error("git.LoadGitVersion: %v", err)
 		return "", fmt.Errorf("Unable to get git version: %v", err)
 	}
 
@@ -157,7 +155,7 @@ func rawMerge(pr *models.PullRequest, doer *models.User, mergeStyle models.Merge
 	}
 
 	var gitConfigCommand func() *git.Command
-	if version.Compare(binVersion, "1.8.0", ">=") {
+	if git.CheckGitVersionConstraint(">= 1.8.0") == nil {
 		gitConfigCommand = func() *git.Command {
 			return git.NewCommand("config", "--local")
 		}
@@ -213,11 +211,11 @@ func rawMerge(pr *models.PullRequest, doer *models.User, mergeStyle models.Merge
 
 	// Determine if we should sign
 	signArg := ""
-	if version.Compare(binVersion, "1.7.9", ">=") {
+	if git.CheckGitVersionConstraint(">= 1.7.9") == nil {
 		sign, keyID, _ := pr.SignMerge(doer, tmpBasePath, "HEAD", trackingBranch)
 		if sign {
 			signArg = "-S" + keyID
-		} else if version.Compare(binVersion, "2.0.0", ">=") {
+		} else if git.CheckGitVersionConstraint(">= 2.0.0") == nil {
 			signArg = "--no-gpg-sign"
 		}
 	}

vendor/github.com/hashicorp/go-version/LICENSE

@@ -0,0 +1,354 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. “Contributor”
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. “Contributor Version”
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor’s Contribution.
+
+1.3. “Contribution”
+
+     means Covered Software of a particular Contributor.
+
+1.4. “Covered Software”
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. “Incompatible With Secondary Licenses”
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of version
+        1.1 or earlier of the License, but not also under the terms of a
+        Secondary License.
+
+1.6. “Executable Form”
+
+     means any form of the work other than Source Code Form.
+
+1.7. “Larger Work”
+
+     means a work that combines Covered Software with other material, in a separate
+     file or files, that is not Covered Software.
+
+1.8. “License”
+
+     means this document.
+
+1.9. “Licensable”
+
+     means having the right to grant, to the maximum extent possible, whether at the
+     time of the initial grant or subsequently, any and all of the rights conveyed by
+     this License.
+
+1.10. “Modifications”
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to, deletion
+        from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. “Patent Claims” of a Contributor
+
+      means any patent claim(s), including without limitation, method, process,
+      and apparatus claims, in any patent Licensable by such Contributor that
+      would be infringed, but for the grant of the License, by the making,
+      using, selling, offering for sale, having made, import, or transfer of
+      either its Contributions or its Contributor Version.
+
+1.12. “Secondary License”
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. “Source Code Form”
+
+      means the form of the work preferred for making modifications.
+
+1.14. “You” (or “Your”)
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, “You” includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, “control” means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or as
+        part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its Contributions
+        or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution become
+     effective for each Contribution on the date the Contributor first distributes
+     such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under this
+     License. No additional rights or licenses will be implied from the distribution
+     or licensing of Covered Software under this License. Notwithstanding Section
+     2.1(b) above, no patent license is granted by a Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party’s
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of its
+        Contributions.
+
+     This License does not grant any rights in the trademarks, service marks, or
+     logos of any Contributor (except as may be necessary to comply with the
+     notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this License
+     (see Section 10.2) or under the terms of a Secondary License (if permitted
+     under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its Contributions
+     are its original creation(s) or it has sufficient rights to grant the
+     rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under applicable
+     copyright doctrines of fair use, fair dealing, or other equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under the
+     terms of this License. You must inform recipients that the Source Code Form
+     of the Covered Software is governed by the terms of this License, and how
+     they can obtain a copy of this License. You may not attempt to alter or
+     restrict the recipients’ rights in the Source Code Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this License,
+        or sublicense it under different terms, provided that the license for
+        the Executable Form does not attempt to limit or alter the recipients’
+        rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for the
+     Covered Software. If the Larger Work is a combination of Covered Software
+     with a work governed by one or more Secondary Licenses, and the Covered
+     Software is not Incompatible With Secondary Licenses, this License permits
+     You to additionally distribute such Covered Software under the terms of
+     such Secondary License(s), so that the recipient of the Larger Work may, at
+     their option, further distribute the Covered Software under the terms of
+     either this License or such Secondary License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices (including
+     copyright notices, patent notices, disclaimers of warranty, or limitations
+     of liability) contained within the Source Code Form of the Covered
+     Software, except that You may alter any license notices to the extent
+     required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on behalf
+     of any Contributor. You must make it absolutely clear that any such
+     warranty, support, indemnity, or liability obligation is offered by You
+     alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute, judicial
+   order, or regulation then You must: (a) comply with the terms of this License
+   to the maximum extent possible; and (b) describe the limitations and the code
+   they affect. Such description must be placed in a text file included with all
+   distributions of the Covered Software under this License. Except to the
+   extent prohibited by statute or regulation, such description must be
+   sufficiently detailed for a recipient of ordinary skill to be able to
+   understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing basis,
+     if such Contributor fails to notify You of the non-compliance by some
+     reasonable means prior to 60 days after You have come back into compliance.
+     Moreover, Your grants from a particular Contributor are reinstated on an
+     ongoing basis if such Contributor notifies You of the non-compliance by
+     some reasonable means, this is the first time You have received notice of
+     non-compliance with this License from such Contributor, and You become
+     compliant prior to 30 days after Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions, counter-claims,
+     and cross-claims) alleging that a Contributor Version directly or
+     indirectly infringes any patent, then the rights granted to You by any and
+     all Contributors for the Covered Software under Section 2.1 of this License
+     shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an “as is” basis, without
+   warranty of any kind, either expressed, implied, or statutory, including,
+   without limitation, warranties that the Covered Software is free of defects,
+   merchantable, fit for a particular purpose or non-infringing. The entire
+   risk as to the quality and performance of the Covered Software is with You.
+   Should any Covered Software prove defective in any respect, You (not any
+   Contributor) assume the cost of any necessary servicing, repair, or
+   correction. This disclaimer of warranty constitutes an essential part of this
+   License. No use of  any Covered Software is authorized under this License
+   except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from such
+   party’s negligence to the extent applicable law prohibits such limitation.
+   Some jurisdictions do not allow the exclusion or limitation of incidental or
+   consequential damages, so this exclusion and limitation may not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts of
+   a jurisdiction where the defendant maintains its principal place of business
+   and such litigation shall be governed by laws of that jurisdiction, without
+   reference to its conflict-of-law provisions. Nothing in this Section shall
+   prevent a party’s ability to bring cross-claims or counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject matter
+   hereof. If any provision of this License is held to be unenforceable, such
+   provision shall be reformed only to the extent necessary to make it
+   enforceable. Any law or regulation which provides that the language of a
+   contract shall be construed against the drafter shall not be used to construe
+   this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version of
+      the License under which You originally received the Covered Software, or
+      under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a modified
+      version of this License if you rename the license and remove any
+      references to the name of the license steward (except to note that such
+      modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
+      If You choose to distribute Source Code Form that is Incompatible With
+      Secondary Licenses under the terms of this version of the License, the
+      notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - “Incompatible With Secondary Licenses” Notice
+
+      This Source Code Form is “Incompatible
+      With Secondary Licenses”, as defined by
+      the Mozilla Public License, v. 2.0.
+

vendor/github.com/hashicorp/go-version/README.md

@@ -0,0 +1,66 @@
+# Versioning Library for Go
+[![Build Status](https://circleci.com/gh/hashicorp/go-version/tree/master.svg?style=svg)](https://circleci.com/gh/hashicorp/go-version/tree/master)
+[![GoDoc](https://godoc.org/github.com/hashicorp/go-version?status.svg)](https://godoc.org/github.com/hashicorp/go-version)
+
+go-version is a library for parsing versions and version constraints,
+and verifying versions against a set of constraints. go-version
+can sort a collection of versions properly, handles prerelease/beta
+versions, can increment versions, etc.
+
+Versions used with go-version must follow [SemVer](http://semver.org/).
+
+## Installation and Usage
+
+Package documentation can be found on
+[GoDoc](http://godoc.org/github.com/hashicorp/go-version).
+
+Installation can be done with a normal `go get`:
+
+```
+$ go get github.com/hashicorp/go-version
+```
+
+#### Version Parsing and Comparison
+
+```go
+v1, err := version.NewVersion("1.2")
+v2, err := version.NewVersion("1.5+metadata")
+
+// Comparison example. There is also GreaterThan, Equal, and just
+// a simple Compare that returns an int allowing easy >=, <=, etc.
+if v1.LessThan(v2) {
+    fmt.Printf("%s is less than %s", v1, v2)
+}
+```
+
+#### Version Constraints
+
+```go
+v1, err := version.NewVersion("1.2")
+
+// Constraints example.
+constraints, err := version.NewConstraint(">= 1.0, < 1.4")
+if constraints.Check(v1) {
+	fmt.Printf("%s satisfies constraints %s", v1, constraints)
+}
+```
+
+#### Version Sorting
+
+```go
+versionsRaw := []string{"1.1", "0.7.1", "1.4-beta", "1.4", "2"}
+versions := make([]*version.Version, len(versionsRaw))
+for i, raw := range versionsRaw {
+    v, _ := version.NewVersion(raw)
+    versions[i] = v
+}
+
+// After this, the versions are properly sorted
+sort.Sort(version.Collection(versions))
+```
+
+## Issues and Contributing
+
+If you find an issue with this library, please report an issue. If you'd
+like, we welcome any contributions. Fork this library and submit a pull
+request.

vendor/github.com/hashicorp/go-version/constraint.go

@@ -0,0 +1,204 @@
+package version
+
+import (
+	"fmt"
+	"reflect"
+	"regexp"
+	"strings"
+)
+
+// Constraint represents a single constraint for a version, such as
+// ">= 1.0".
+type Constraint struct {
+	f        constraintFunc
+	check    *Version
+	original string
+}
+
+// Constraints is a slice of constraints. We make a custom type so that
+// we can add methods to it.
+type Constraints []*Constraint
+
+type constraintFunc func(v, c *Version) bool
+
+var constraintOperators map[string]constraintFunc
+
+var constraintRegexp *regexp.Regexp
+
+func init() {
+	constraintOperators = map[string]constraintFunc{
+		"":   constraintEqual,
+		"=":  constraintEqual,
+		"!=": constraintNotEqual,
+		">":  constraintGreaterThan,
+		"<":  constraintLessThan,
+		">=": constraintGreaterThanEqual,
+		"<=": constraintLessThanEqual,
+		"~>": constraintPessimistic,
+	}
+
+	ops := make([]string, 0, len(constraintOperators))
+	for k := range constraintOperators {
+		ops = append(ops, regexp.QuoteMeta(k))
+	}
+
+	constraintRegexp = regexp.MustCompile(fmt.Sprintf(
+		`^\s*(%s)\s*(%s)\s*$`,
+		strings.Join(ops, "|"),
+		VersionRegexpRaw))
+}
+
+// NewConstraint will parse one or more constraints from the given
+// constraint string. The string must be a comma-separated list of
+// constraints.
+func NewConstraint(v string) (Constraints, error) {
+	vs := strings.Split(v, ",")
+	result := make([]*Constraint, len(vs))
+	for i, single := range vs {
+		c, err := parseSingle(single)
+		if err != nil {
+			return nil, err
+		}
+
+		result[i] = c
+	}
+
+	return Constraints(result), nil
+}
+
+// Check tests if a version satisfies all the constraints.
+func (cs Constraints) Check(v *Version) bool {
+	for _, c := range cs {
+		if !c.Check(v) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// Returns the string format of the constraints
+func (cs Constraints) String() string {
+	csStr := make([]string, len(cs))
+	for i, c := range cs {
+		csStr[i] = c.String()
+	}
+
+	return strings.Join(csStr, ",")
+}
+
+// Check tests if a constraint is validated by the given version.
+func (c *Constraint) Check(v *Version) bool {
+	return c.f(v, c.check)
+}
+
+func (c *Constraint) String() string {
+	return c.original
+}
+
+func parseSingle(v string) (*Constraint, error) {
+	matches := constraintRegexp.FindStringSubmatch(v)
+	if matches == nil {
+		return nil, fmt.Errorf("Malformed constraint: %s", v)
+	}
+
+	check, err := NewVersion(matches[2])
+	if err != nil {
+		return nil, err
+	}
+
+	return &Constraint{
+		f:        constraintOperators[matches[1]],
+		check:    check,
+		original: v,
+	}, nil
+}
+
+func prereleaseCheck(v, c *Version) bool {
+	switch vPre, cPre := v.Prerelease() != "", c.Prerelease() != ""; {
+	case cPre && vPre:
+		// A constraint with a pre-release can only match a pre-release version
+		// with the same base segments.
+		return reflect.DeepEqual(c.Segments64(), v.Segments64())
+
+	case !cPre && vPre:
+		// A constraint without a pre-release can only match a version without a
+		// pre-release.
+		return false
+
+	case cPre && !vPre:
+		// OK, except with the pessimistic operator
+	case !cPre && !vPre:
+		// OK
+	}
+	return true
+}
+
+//-------------------------------------------------------------------
+// Constraint functions
+//-------------------------------------------------------------------
+
+func constraintEqual(v, c *Version) bool {
+	return v.Equal(c)
+}
+
+func constraintNotEqual(v, c *Version) bool {
+	return !v.Equal(c)
+}
+
+func constraintGreaterThan(v, c *Version) bool {
+	return prereleaseCheck(v, c) && v.Compare(c) == 1
+}
+
+func constraintLessThan(v, c *Version) bool {
+	return prereleaseCheck(v, c) && v.Compare(c) == -1
+}
+
+func constraintGreaterThanEqual(v, c *Version) bool {
+	return prereleaseCheck(v, c) && v.Compare(c) >= 0
+}
+
+func constraintLessThanEqual(v, c *Version) bool {
+	return prereleaseCheck(v, c) && v.Compare(c) <= 0
+}
+
+func constraintPessimistic(v, c *Version) bool {
+	// Using a pessimistic constraint with a pre-release, restricts versions to pre-releases
+	if !prereleaseCheck(v, c) || (c.Prerelease() != "" && v.Prerelease() == "") {
+		return false
+	}
+
+	// If the version being checked is naturally less than the constraint, then there
+	// is no way for the version to be valid against the constraint
+	if v.LessThan(c) {
+		return false
+	}
+	// We'll use this more than once, so grab the length now so it's a little cleaner
+	// to write the later checks
+	cs := len(c.segments)
+
+	// If the version being checked has less specificity than the constraint, then there
+	// is no way for the version to be valid against the constraint
+	if cs > len(v.segments) {
+		return false
+	}
+
+	// Check the segments in the constraint against those in the version. If the version
+	// being checked, at any point, does not have the same values in each index of the
+	// constraints segments, then it cannot be valid against the constraint.
+	for i := 0; i < c.si-1; i++ {
+		if v.segments[i] != c.segments[i] {
+			return false
+		}
+	}
+
+	// Check the last part of the segment in the constraint. If the version segment at
+	// this index is less than the constraints segment at this index, then it cannot
+	// be valid against the constraint
+	if c.segments[cs-1] > v.segments[cs-1] {
+		return false
+	}
+
+	// If nothing has rejected the version by now, it's valid
+	return true
+}

vendor/github.com/hashicorp/go-version/go.mod

@@ -0,0 +1 @@
+module github.com/hashicorp/go-version

vendor/github.com/hashicorp/go-version/version.go

@@ -0,0 +1,384 @@
+package version
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// The compiled regular expression used to test the validity of a version.
+var (
+	versionRegexp *regexp.Regexp
+	semverRegexp  *regexp.Regexp
+)
+
+// The raw regular expression string used for testing the validity
+// of a version.
+const (
+	VersionRegexpRaw string = `v?([0-9]+(\.[0-9]+)*?)` +
+		`(-([0-9]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)|(-?([A-Za-z\-~]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)))?` +
+		`(\+([0-9A-Za-z\-~]+(\.[0-9A-Za-z\-~]+)*))?` +
+		`?`
+
+	// SemverRegexpRaw requires a separator between version and prerelease
+	SemverRegexpRaw string = `v?([0-9]+(\.[0-9]+)*?)` +
+		`(-([0-9]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)|(-([A-Za-z\-~]+[0-9A-Za-z\-~]*(\.[0-9A-Za-z\-~]+)*)))?` +
+		`(\+([0-9A-Za-z\-~]+(\.[0-9A-Za-z\-~]+)*))?` +
+		`?`
+)
+
+// Version represents a single version.
+type Version struct {
+	metadata string
+	pre      string
+	segments []int64
+	si       int
+	original string
+}
+
+func init() {
+	versionRegexp = regexp.MustCompile("^" + VersionRegexpRaw + "$")
+	semverRegexp = regexp.MustCompile("^" + SemverRegexpRaw + "$")
+}
+
+// NewVersion parses the given version and returns a new
+// Version.
+func NewVersion(v string) (*Version, error) {
+	return newVersion(v, versionRegexp)
+}
+
+// NewSemver parses the given version and returns a new
+// Version that adheres strictly to SemVer specs
+// https://semver.org/
+func NewSemver(v string) (*Version, error) {
+	return newVersion(v, semverRegexp)
+}
+
+func newVersion(v string, pattern *regexp.Regexp) (*Version, error) {
+	matches := pattern.FindStringSubmatch(v)
+	if matches == nil {
+		return nil, fmt.Errorf("Malformed version: %s", v)
+	}
+	segmentsStr := strings.Split(matches[1], ".")
+	segments := make([]int64, len(segmentsStr))
+	si := 0
+	for i, str := range segmentsStr {
+		val, err := strconv.ParseInt(str, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf(
+				"Error parsing version: %s", err)
+		}
+
+		segments[i] = int64(val)
+		si++
+	}
+
+	// Even though we could support more than three segments, if we
+	// got less than three, pad it with 0s. This is to cover the basic
+	// default usecase of semver, which is MAJOR.MINOR.PATCH at the minimum
+	for i := len(segments); i < 3; i++ {
+		segments = append(segments, 0)
+	}
+
+	pre := matches[7]
+	if pre == "" {
+		pre = matches[4]
+	}
+
+	return &Version{
+		metadata: matches[10],
+		pre:      pre,
+		segments: segments,
+		si:       si,
+		original: v,
+	}, nil
+}
+
+// Must is a helper that wraps a call to a function returning (*Version, error)
+// and panics if error is non-nil.
+func Must(v *Version, err error) *Version {
+	if err != nil {
+		panic(err)
+	}
+
+	return v
+}
+
+// Compare compares this version to another version. This
+// returns -1, 0, or 1 if this version is smaller, equal,
+// or larger than the other version, respectively.
+//
+// If you want boolean results, use the LessThan, Equal,
+// GreaterThan, GreaterThanOrEqual or LessThanOrEqual methods.
+func (v *Version) Compare(other *Version) int {
+	// A quick, efficient equality check
+	if v.String() == other.String() {
+		return 0
+	}
+
+	segmentsSelf := v.Segments64()
+	segmentsOther := other.Segments64()
+
+	// If the segments are the same, we must compare on prerelease info
+	if reflect.DeepEqual(segmentsSelf, segmentsOther) {
+		preSelf := v.Prerelease()
+		preOther := other.Prerelease()
+		if preSelf == "" && preOther == "" {
+			return 0
+		}
+		if preSelf == "" {
+			return 1
+		}
+		if preOther == "" {
+			return -1
+		}
+
+		return comparePrereleases(preSelf, preOther)
+	}
+
+	// Get the highest specificity (hS), or if they're equal, just use segmentSelf length
+	lenSelf := len(segmentsSelf)
+	lenOther := len(segmentsOther)
+	hS := lenSelf
+	if lenSelf < lenOther {
+		hS = lenOther
+	}
+	// Compare the segments
+	// Because a constraint could have more/less specificity than the version it's
+	// checking, we need to account for a lopsided or jagged comparison
+	for i := 0; i < hS; i++ {
+		if i > lenSelf-1 {
+			// This means Self had the lower specificity
+			// Check to see if the remaining segments in Other are all zeros
+			if !allZero(segmentsOther[i:]) {
+				// if not, it means that Other has to be greater than Self
+				return -1
+			}
+			break
+		} else if i > lenOther-1 {
+			// this means Other had the lower specificity
+			// Check to see if the remaining segments in Self are all zeros -
+			if !allZero(segmentsSelf[i:]) {
+				//if not, it means that Self has to be greater than Other
+				return 1
+			}
+			break
+		}
+		lhs := segmentsSelf[i]
+		rhs := segmentsOther[i]
+		if lhs == rhs {
+			continue
+		} else if lhs < rhs {
+			return -1
+		}
+		// Otherwis, rhs was > lhs, they're not equal
+		return 1
+	}
+
+	// if we got this far, they're equal
+	return 0
+}
+
+func allZero(segs []int64) bool {
+	for _, s := range segs {
+		if s != 0 {
+			return false
+		}
+	}
+	return true
+}
+
+func comparePart(preSelf string, preOther string) int {
+	if preSelf == preOther {
+		return 0
+	}
+
+	var selfInt int64
+	selfNumeric := true
+	selfInt, err := strconv.ParseInt(preSelf, 10, 64)
+	if err != nil {
+		selfNumeric = false
+	}
+
+	var otherInt int64
+	otherNumeric := true
+	otherInt, err = strconv.ParseInt(preOther, 10, 64)
+	if err != nil {
+		otherNumeric = false
+	}
+
+	// if a part is empty, we use the other to decide
+	if preSelf == "" {
+		if otherNumeric {
+			return -1
+		}
+		return 1
+	}
+
+	if preOther == "" {
+		if selfNumeric {
+			return 1
+		}
+		return -1
+	}
+
+	if selfNumeric && !otherNumeric {
+		return -1
+	} else if !selfNumeric && otherNumeric {
+		return 1
+	} else if !selfNumeric && !otherNumeric && preSelf > preOther {
+		return 1
+	} else if selfInt > otherInt {
+		return 1
+	}
+
+	return -1
+}
+
+func comparePrereleases(v string, other string) int {
+	// the same pre release!
+	if v == other {
+		return 0
+	}
+
+	// split both pre releases for analyse their parts
+	selfPreReleaseMeta := strings.Split(v, ".")
+	otherPreReleaseMeta := strings.Split(other, ".")
+
+	selfPreReleaseLen := len(selfPreReleaseMeta)
+	otherPreReleaseLen := len(otherPreReleaseMeta)
+
+	biggestLen := otherPreReleaseLen
+	if selfPreReleaseLen > otherPreReleaseLen {
+		biggestLen = selfPreReleaseLen
+	}
+
+	// loop for parts to find the first difference
+	for i := 0; i < biggestLen; i = i + 1 {
+		partSelfPre := ""
+		if i < selfPreReleaseLen {
+			partSelfPre = selfPreReleaseMeta[i]
+		}
+
+		partOtherPre := ""
+		if i < otherPreReleaseLen {
+			partOtherPre = otherPreReleaseMeta[i]
+		}
+
+		compare := comparePart(partSelfPre, partOtherPre)
+		// if parts are equals, continue the loop
+		if compare != 0 {
+			return compare
+		}
+	}
+
+	return 0
+}
+
+// Equal tests if two versions are equal.
+func (v *Version) Equal(o *Version) bool {
+	if v == nil || o == nil {
+		return v == o
+	}
+
+	return v.Compare(o) == 0
+}
+
+// GreaterThan tests if this version is greater than another version.
+func (v *Version) GreaterThan(o *Version) bool {
+	return v.Compare(o) > 0
+}
+
+// GreaterThanOrEqual tests if this version is greater than or equal to another version.
+func (v *Version) GreaterThanOrEqual(o *Version) bool {
+	return v.Compare(o) >= 0
+}
+
+// LessThan tests if this version is less than another version.
+func (v *Version) LessThan(o *Version) bool {
+	return v.Compare(o) < 0
+}
+
+// LessThanOrEqual tests if this version is less than or equal to another version.
+func (v *Version) LessThanOrEqual(o *Version) bool {
+	return v.Compare(o) <= 0
+}
+
+// Metadata returns any metadata that was part of the version
+// string.
+//
+// Metadata is anything that comes after the "+" in the version.
+// For example, with "1.2.3+beta", the metadata is "beta".
+func (v *Version) Metadata() string {
+	return v.metadata
+}
+
+// Prerelease returns any prerelease data that is part of the version,
+// or blank if there is no prerelease data.
+//
+// Prerelease information is anything that comes after the "-" in the
+// version (but before any metadata). For example, with "1.2.3-beta",
+// the prerelease information is "beta".
+func (v *Version) Prerelease() string {
+	return v.pre
+}
+
+// Segments returns the numeric segments of the version as a slice of ints.
+//
+// This excludes any metadata or pre-release information. For example,
+// for a version "1.2.3-beta", segments will return a slice of
+// 1, 2, 3.
+func (v *Version) Segments() []int {
+	segmentSlice := make([]int, len(v.segments))
+	for i, v := range v.segments {
+		segmentSlice[i] = int(v)
+	}
+	return segmentSlice
+}
+
+// Segments64 returns the numeric segments of the version as a slice of int64s.
+//
+// This excludes any metadata or pre-release information. For example,
+// for a version "1.2.3-beta", segments will return a slice of
+// 1, 2, 3.
+func (v *Version) Segments64() []int64 {
+	result := make([]int64, len(v.segments))
+	copy(result, v.segments)
+	return result
+}
+
+// String returns the full version string included pre-release
+// and metadata information.
+//
+// This value is rebuilt according to the parsed segments and other
+// information. Therefore, ambiguities in the version string such as
+// prefixed zeroes (1.04.0 => 1.4.0), `v` prefix (v1.0.0 => 1.0.0), and
+// missing parts (1.0 => 1.0.0) will be made into a canonicalized form
+// as shown in the parenthesized examples.
+func (v *Version) String() string {
+	var buf bytes.Buffer
+	fmtParts := make([]string, len(v.segments))
+	for i, s := range v.segments {
+		// We can ignore err here since we've pre-parsed the values in segments
+		str := strconv.FormatInt(s, 10)
+		fmtParts[i] = str
+	}
+	fmt.Fprintf(&buf, strings.Join(fmtParts, "."))
+	if v.pre != "" {
+		fmt.Fprintf(&buf, "-%s", v.pre)
+	}
+	if v.metadata != "" {
+		fmt.Fprintf(&buf, "+%s", v.metadata)
+	}
+
+	return buf.String()
+}
+
+// Original returns the original parsed version as-is, including any
+// potential whitespace, `v` prefix, etc.
+func (v *Version) Original() string {
+	return v.original
+}

vendor/github.com/hashicorp/go-version/version_collection.go

@@ -0,0 +1,17 @@
+package version
+
+// Collection is a type that implements the sort.Interface interface
+// so that versions can be sorted.
+type Collection []*Version
+
+func (v Collection) Len() int {
+	return len(v)
+}
+
+func (v Collection) Less(i, j int) bool {
+	return v[i].LessThan(v[j])
+}
+
+func (v Collection) Swap(i, j int) {
+	v[i], v[j] = v[j], v[i]
+}

vendor/github.com/mcuadros/go-version/.gitignore

@@ -1,22 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe

vendor/github.com/mcuadros/go-version/.travis.yml

@@ -1 +0,0 @@
-language: go

vendor/github.com/mcuadros/go-version/LICENSE

@@ -1,19 +0,0 @@
-Copyright (c) 2013 Máximo Cuadros
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is furnished
-to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

vendor/github.com/mcuadros/go-version/README.md

@@ -1,80 +0,0 @@
-go-version [![Build Status](https://travis-ci.org/mcuadros/go-version.svg?branch=master)](https://travis-ci.org/mcuadros/go-version) [![GoDoc](https://godoc.org/github.com/mcuadros/go-version?status.svg)](http://godoc.org/github.com/mcuadros/go-version)
-==============================
-
-Version normalizer and comparison library for go, heavy based on PHP version_compare function and Version comparsion libs from [Composer](https://github.com/composer/composer) PHP project
-
-Installation
-
-The recommended way to install go-version
-
-```
-go get github.com/mcuadros/go-version
-```
-
-Examples
-
-How import the package
-
-```go
-import (
-    "github.com/mcuadros/go-version"
-)
-```
-
-`version.Normalize()`: Normalizes a version string to be able to perform comparisons on it
-
-```go
-version.Normalize("10.4.13-b")
-//Returns: 10.4.13.0-beta
-```
-
-
-`version.CompareSimple()`: Compares two normalizated version number strings
-
-```go
-version.CompareSimple("1.2", "1.0.1")
-//Returns: 1
-
-version.CompareSimple("1.0rc1", "1.0")
-//Returns: -1
-```
-
-
-`version.Compare()`: Compares two normalizated version number strings, for a particular relationship
-
-```go
-version.Compare("1.0-dev", "1.0", "<")
-//Returns: true
-
-version.Compare("1.0rc1", "1.0", ">=")
-//Returns: false
-
-version.Compare("2.3.4", "v3.1.2", "<")
-//Returns: true
-```
-
-`version.ConstrainGroup.Match()`: Match a given version againts a group of constrains, read about constraint string format at [Composer documentation](http://getcomposer.org/doc/01-basic-usage.md#package-versions)  
-
-```go
-c := version.NewConstrainGroupFromString(">2.0,<=3.0")
-c.Match("2.5.0beta")
-//Returns: true
-
-c := version.NewConstrainGroupFromString("~1.2.3")
-c.Match("1.2.3.5")
-//Returns: true
-```
-
-`version.Sort()`: Sorts a string slice of version number strings using version.CompareSimple()
-
-```go
-version.Sort([]string{"1.10-dev", "1.0rc1", "1.0", "1.0-dev"})
-//Returns []string{"1.0-dev", "1.0rc1", "1.0", "1.10-dev"}
-```
-
-License
-
-MIT, see [LICENSE](LICENSE)

vendor/github.com/mcuadros/go-version/compare.go

@@ -1,173 +0,0 @@
-package version
-
-import (
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var regexpSigns = regexp.MustCompile(`[_\-+]`)
-var regexpDotBeforeDigit = regexp.MustCompile(`([^.\d]+)`)
-var regexpMultipleDots = regexp.MustCompile(`\.{2,}`)
-
-var specialForms = map[string]int{
-	"SNAPSHOT": -7,
-	"snapshot": -7,
-	"dev":      -6,
-	"alpha":    -5,
-	"a":        -5,
-	"beta":     -4,
-	"b":        -4,
-	"RC":       -3,
-	"rc":       -3,
-	"#":        -2,
-	"p":        1,
-	"pl":       1,
-}
-
-var unknownForm int = -7
-
-// Compares two version number strings, for a particular relationship
-//
-// Usage
-//     version.Compare("2.3.4", "v3.1.2", "<")
-//     Returns: true
-//
-//     version.Compare("1.0rc1", "1.0", ">=")
-//     Returns: false
-func Compare(version1, version2, operator string) bool {
-	version1N := Normalize(version1)
-	version2N := Normalize(version2)
-
-	return CompareNormalized(version1N, version2N, operator)
-}
-
-// Compares two normalizated version number strings, for a particular relationship
-//
-// The function first replaces _, - and + with a dot . in the version strings
-// and also inserts dots . before and after any non number so that for example
-// '4.3.2RC1' becomes '4.3.2.RC.1'.
-//
-// Then it splits the results like if you were using Split(version, '.').
-// Then it compares the parts starting from left to right. If a part contains
-// special version strings these are handled in the following order: any string
-// not found in this list:
-//   < dev < alpha = a < beta = b < RC = rc < # < pl = p.
-//
-// Usage
-//     version.CompareNormalized("1.0-dev", "1.0", "<")
-//     Returns: true
-//
-//     version.CompareNormalized("1.0rc1", "1.0", ">=")
-//     Returns: false
-//
-//     version.CompareNormalized("1.0", "1.0b1", "ge")
-//     Returns: true
-func CompareNormalized(version1, version2, operator string) bool {
-	compare := CompareSimple(version1, version2)
-
-	switch {
-	case operator == ">" || operator == "gt":
-		return compare > 0
-	case operator == ">=" || operator == "ge":
-		return compare >= 0
-	case operator == "<=" || operator == "le":
-		return compare <= 0
-	case operator == "==" || operator == "=" || operator == "eq":
-		return compare == 0
-	case operator == "<>" || operator == "!=" || operator == "ne":
-		return compare != 0
-	case operator == "" || operator == "<" || operator == "lt":
-		return compare < 0
-	}
-
-	return false
-}
-
-// Compares two normalizated version number strings
-//
-// Just the same of CompareVersion but return a int result, 0 if both version
-// are equal, 1 if the right side is bigger and -1 if the right side is lower
-//
-// Usage
-//     version.CompareSimple("1.2", "1.0.1")
-//     Returns: 1
-//
-//     version.CompareSimple("1.0rc1", "1.0")
-//     Returns: -1
-func CompareSimple(version1, version2 string) int {
-	var x, r, l int = 0, 0, 0
-
-	v1, v2 := prepVersion(version1), prepVersion(version2)
-	len1, len2 := len(v1), len(v2)
-
-	if len1 > len2 {
-		x = len1
-	} else {
-		x = len2
-	}
-
-	for i := 0; i < x; i++ {
-		if i < len1 && i < len2 {
-			if v1[i] == v2[i] {
-				continue
-			}
-		}
-
-		r = 0
-		if i < len1 {
-			r = numVersion(v1[i])
-		}
-
-		l = 0
-		if i < len2 {
-			l = numVersion(v2[i])
-		}
-
-		if r < l {
-			return -1
-		} else if r > l {
-			return 1
-		}
-	}
-
-	return 0
-}
-
-func prepVersion(version string) []string {
-	if len(version) == 0 {
-		return []string{""}
-	}
-
-	version = regexpSigns.ReplaceAllString(version, ".")
-	version = regexpDotBeforeDigit.ReplaceAllString(version, ".$1.")
-	version = regexpMultipleDots.ReplaceAllString(version, ".")
-
-	return strings.Split(version, ".")
-}
-
-func numVersion(value string) int {
-	if value == "" {
-		return 0
-	}
-
-	if number, err := strconv.Atoi(value); err == nil {
-		return number
-	}
-
-	if special, ok := specialForms[value]; ok {
-		return special
-	}
-
-	return unknownForm
-}
-
-func ValidSimpleVersionFormat(value string) bool {
-	normalized := Normalize(value)
-	for _, component := range prepVersion(normalized) {
-		if numVersion(component) == unknownForm {
-			return false
-		}
-	}
-	return true
-}

vendor/github.com/mcuadros/go-version/constraint.go

@@ -1,49 +0,0 @@
-package version
-
-import (
-	"strings"
-)
-
-type Constraint struct {
-	operator string
-	version  string
-}
-
-// Return a new Constrain and sets operator and version to compare
-func NewConstrain(operator, version string) *Constraint {
-	constraint := new(Constraint)
-	constraint.SetOperator(operator)
-	constraint.SetVersion(version)
-
-	return constraint
-}
-
-// Sets operator to compare
-func (self *Constraint) SetOperator(operator string) {
-	self.operator = operator
-}
-
-// Get operator to compare
-func (self *Constraint) GetOperator() string {
-	return self.operator
-}
-
-// Sets version to compare
-func (self *Constraint) SetVersion(version string) {
-	self.version = version
-}
-
-// Get version to compare
-func (self *Constraint) GetVersion() string {
-	return self.version
-}
-
-// Match a given version againts the constraint
-func (self *Constraint) Match(version string) bool {
-	return Compare(version, self.version, self.operator)
-}
-
-// Return a string representation
-func (self *Constraint) String() string {
-	return strings.Trim(self.operator+" "+self.version, " ")
-}

vendor/github.com/mcuadros/go-version/doc.go

@@ -1,6 +0,0 @@
-/*
-Version normalizer and comparison library for go, heavy based on PHP 
-version_compare function and Version comparsion libs from Composer 
-(https://github.com/composer/composer) PHP project
-*/
-package version

vendor/github.com/mcuadros/go-version/group.go

@@ -1,300 +0,0 @@
-package version
-
-import (
-	"regexp"
-	"strconv"
-	"strings"
-	"sync"
-)
-
-type ConstraintGroup struct {
-	constraints []*Constraint
-}
-
-// Return a new NewConstrainGroup
-func NewConstrainGroup() *ConstraintGroup {
-	group := new(ConstraintGroup)
-
-	return group
-}
-
-// Return a new NewConstrainGroup and create the constraints based on a string
-//
-// Version constraints can be specified in a few different ways:
-//
-// Exact version: You can specify the exact version of a package, for 
-// example 1.0.2.
-//
-// Range: By using comparison operators you can specify ranges of valid versions. 
-// Valid operators are >, >=, <, <=, !=. An example range would be >=1.0. You can 
-// define multiple ranges, separated by a comma: >=1.0,<2.0.
-// 
-// Wildcard: You can specify a pattern with a * wildcard. 1.0.* is the equivalent 
-// of >=1.0,<1.1.
-//
-// Next Significant Release (Tilde Operator): The ~ operator is best explained by 
-// example: ~1.2 is equivalent to >=1.2,<2.0, while ~1.2.3 is equivalent to 
-// >=1.2.3,<1.3. As you can see it is mostly useful for projects respecting 
-// semantic versioning. A common usage would be to mark the minimum minor 
-// version you depend on, like ~1.2 (which allows anything up to, but not 
-// including, 2.0). Since in theory there should be no backwards compatibility 
-// breaks until 2.0, that works well. Another way of looking at it is that 
-// using ~ specifies a minimum version, but allows the last digit specified 
-// to go up.
-//
-// By default only stable releases are taken into consideration. If you would like 
-// to also get RC, beta, alpha or dev versions of your dependencies you can do so 
-// using stability flags. To change that for all packages instead of doing per 
-// dependency you can also use the minimum-stability setting.
-// 
-// From: http://getcomposer.org/doc/01-basic-usage.md#package-versions
-func NewConstrainGroupFromString(name string) *ConstraintGroup {
-	group := new(ConstraintGroup)
-	group.fromString(name)
-
-	return group
-}
-
-// Adds a Contraint to the group
-func (self *ConstraintGroup) AddConstraint(constraint ...*Constraint) {
-	if self.constraints == nil {
-		self.constraints = make([]*Constraint, 0)
-	}
-
-	self.constraints = append(self.constraints, constraint...)
-}
-
-// Return all the constraints
-func (self *ConstraintGroup) GetConstraints() []*Constraint {
-	return self.constraints
-}
-
-// Match a given version againts the group
-//
-// Usage
-//     c := version.NewConstrainGroupFromString(">2.0,<=3.0")
-//     c.Match("2.5.0beta")
-//     Returns: true
-//
-//     c := version.NewConstrainGroupFromString("~1.2.3")
-//     c.Match("1.2.3.5")
-//     Returns: true
-func (self *ConstraintGroup) Match(version string) bool {
-	for _, constraint := range self.constraints {
-		if constraint.Match(version) == false {
-			return false
-		}
-	}
-
-	return true
-}
-
-func (self *ConstraintGroup) fromString(constraint string) bool {
-	result := RegFind(`(?i)^([^,\s]*?)@(stable|RC|beta|alpha|dev)$`, constraint)
-	if result != nil {
-		constraint = result[1]
-		if constraint == "" {
-			constraint = "*"
-		}
-	}
-
-	result = RegFind(`(?i)^(dev-[^,\s@]+?|[^,\s@]+?\.x-dev)#.+$`, constraint)
-	if result != nil {
-		if result[1] != "" {
-			constraint = result[1]
-		}
-	}
-
-	constraints := RegSplit(`\s*,\s*`, strings.Trim(constraint, " "))
-
-	if len(constraints) > 1 {
-		for _, part := range constraints {
-			self.AddConstraint(self.parseConstraint(part)...)
-		}
-
-		return true
-	}
-
-	self.AddConstraint(self.parseConstraint(constraints[0])...)
-
-	return true
-}
-
-func (self *ConstraintGroup) parseConstraint(constraint string) []*Constraint {
-
-	stabilityModifier := ""
-
-	result := RegFind(`(?i)^([^,\s]+?)@(stable|RC|beta|alpha|dev)$`, constraint)
-	if result != nil {
-		constraint = result[1]
-		if result[2] != "stable" {
-			stabilityModifier = result[2]
-		}
-	}
-
-	result = RegFind(`^[x*](\.[x*])*$`, constraint)
-	if result != nil {
-		return make([]*Constraint, 0)
-	}
-
-	highVersion := ""
-	lowVersion := ""
-
-	result = RegFind(`(?i)^~(\d+)(?:\.(\d+))?(?:\.(\d+))?(?:\.(\d+))?`+modifierRegex+`?$`, constraint)
-	if result != nil {
-		if len(result) > 4 && result[4] != "" {
-			last, _ := strconv.Atoi(result[3])
-			highVersion = result[1] + "." + result[2] + "." + strconv.Itoa(last+1) + ".0-dev"
-			lowVersion = result[1] + "." + result[2] + "." + result[3] + "." + result[4]
-		} else if len(result) > 3 && result[3] != "" {
-			last, _ := strconv.Atoi(result[2])
-			highVersion = result[1] + "." + strconv.Itoa(last+1) + ".0.0-dev"
-			lowVersion = result[1] + "." + result[2] + "." + result[3] + ".0"
-		} else {
-			last, _ := strconv.Atoi(result[1])
-			highVersion = strconv.Itoa(last+1) + ".0.0.0-dev"
-			if len(result) > 2 && result[2] != "" {
-				lowVersion = result[1] + "." + result[2] + ".0.0"
-			} else {
-				lowVersion = result[1] + ".0.0.0"
-			}
-		}
-
-		if len(result) > 5 && result[5] != "" {
-			lowVersion = lowVersion + "-" + expandStability(result[5])
-
-		}
-
-		if len(result) > 6 && result[6] != "" {
-			lowVersion = lowVersion + result[6]
-		}
-
-		if len(result) > 7 && result[7] != "" {
-			lowVersion = lowVersion + "-dev"
-		}
-
-		return []*Constraint{
-			{">=", lowVersion},
-			{"<", highVersion},
-		}
-	}
-
-	result = RegFind(`^(\d+)(?:\.(\d+))?(?:\.(\d+))?\.[x*]$`, constraint)
-	if result != nil {
-		if len(result) > 3 && result[3] != "" {
-			highVersion = result[1] + "." + result[2] + "." + result[3] + ".9999999"
-			if result[3] == "0" {
-				last, _ := strconv.Atoi(result[2])
-				lowVersion = result[1] + "." + strconv.Itoa(last-1) + ".9999999.9999999"
-			} else {
-				last, _ := strconv.Atoi(result[3])
-				lowVersion = result[1] + "." + result[2] + "." + strconv.Itoa(last-1) + ".9999999"
-			}
-
-		} else if len(result) > 2 && result[2] != "" {
-			highVersion = result[1] + "." + result[2] + ".9999999.9999999"
-			if result[2] == "0" {
-				last, _ := strconv.Atoi(result[1])
-				lowVersion = strconv.Itoa(last-1) + ".9999999.9999999.9999999"
-			} else {
-				last, _ := strconv.Atoi(result[2])
-				lowVersion = result[1] + "." + strconv.Itoa(last-1) + ".9999999.9999999"
-			}
-
-		} else {
-			highVersion = result[1] + ".9999999.9999999.9999999"
-			if result[1] == "0" {
-				return []*Constraint{{"<", highVersion}}
-			} else {
-				last, _ := strconv.Atoi(result[1])
-				lowVersion = strconv.Itoa(last-1) + ".9999999.9999999.9999999"
-			}
-		}
-
-		return []*Constraint{
-			{">", lowVersion},
-			{"<", highVersion},
-		}
-	}
-
-	// match operators constraints
-	result = RegFind(`^(<>|!=|>=?|<=?|==?)?\s*(.*)`, constraint)
-	if result != nil {
-		version := Normalize(result[2])
-
-		if stabilityModifier != "" && parseStability(version) == "stable" {
-			version = version + "-" + stabilityModifier
-		} else if result[1] == "<" {
-			match := RegFind(`(?i)-stable$`, result[2])
-			if match == nil {
-				version = version + "-dev"
-			}
-		}
-
-		if len(result) > 1 && result[1] != "" {
-			return []*Constraint{{result[1], version}}
-		} else {
-			return []*Constraint{{"=", version}}
-
-		}
-	}
-
-	return []*Constraint{{constraint, stabilityModifier}}
-}
-
-// PCRegMap : PreCompiled Regex Map
-type PCRegMap struct {
-	sync.RWMutex
-	m map[string]*regexp.Regexp
-}
-
-// MustCompile : to replace regexp.MustCompile in RegFind.
-func (p *PCRegMap) MustCompile(pattern string) *regexp.Regexp {
-	p.RLock()
-	ret, exist := p.m[pattern]
-	p.RUnlock()
-	if exist {
-		return ret
-	}
-	ret = regexp.MustCompile(pattern)
-	p.Lock()
-	p.m[pattern] = ret
-	p.Unlock()
-	return ret
-}
-
-var (
-	regexpCache *PCRegMap
-)
-
-func init() {
-	regexpCache = new(PCRegMap)
-	regexpCache.m = make(map[string]*regexp.Regexp)
-}
-
-func RegFind(pattern, subject string) []string {
-	reg := regexpCache.MustCompile(pattern)
-	matched := reg.FindAllStringSubmatch(subject, -1)
-
-	if matched != nil {
-		return matched[0]
-	}
-
-	return nil
-}
-
-func RegSplit(pattern, subject string) []string {
-	reg := regexp.MustCompile(pattern)
-	indexes := reg.FindAllStringIndex(subject, -1)
-
-	laststart := 0
-	result := make([]string, len(indexes)+1)
-
-	for i, element := range indexes {
-		result[i] = subject[laststart:element[0]]
-		laststart = element[1]
-	}
-
-	result[len(indexes)] = subject[laststart:len(subject)]
-	return result
-}

vendor/github.com/mcuadros/go-version/normalize.go

@@ -1,116 +0,0 @@
-package version
-
-import (
-	"regexp"
-	"strings"
-)
-
-var modifierRegex = `[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?`
-
-var regexpMasterLikeBranches = regexp.MustCompile(`^(?:dev-)?(?:master|trunk|default)$`)
-var regexpBranchNormalize = regexp.MustCompile(`(?i)^v?(\d+)(\.(?:\d+|[x*]))?(\.(?:\d+|[x*]))?(\.(?:\d+|[x*]))?$`)
-
-// Normalizes a version string to be able to perform comparisons on it
-//
-// Example:
-//     version.Normalize("10.4.13-b")
-//     Returns: 10.4.13.0-beta
-//
-func Normalize(version string) string {
-
-	// ignore aliases and just assume the alias is required instead of the source
-	result := RegFind(`^([^,\s]+) +as +([^,\s]+)$`, version)
-	if result != nil {
-		version = result[1]
-	}
-
-	// match master-like branches
-	if regexpMasterLikeBranches.MatchString(strings.ToLower(version)) {
-		return "9999999-dev"
-	}
-
-	if strings.HasPrefix(strings.ToLower(version), "dev-") {
-		return "dev-" + version[4:len(version)]
-	}
-
-	index := 0
-
-	// match classical versioning
-	result = RegFind(`(?i)^v?(\d{1,3})(\.\d+)?(\.\d+)?(\.\d+)?`+modifierRegex+`$`, version)
-	if result != nil {
-		version = ""
-		for _, val := range result[1:5] {
-			if val != "" {
-				version = version + val
-			} else {
-				version = version + ".0"
-			}
-		}
-
-		index = 5
-	} else {
-		// match date-based versioning
-		result = RegFind(`(?i)^v?(\d{4}(?:[.:-]?\d{2}){1,6}(?:[.:-]?\d{1,3})?)`+modifierRegex+`$`, version)
-		if result != nil {
-			version = regexp.MustCompile(`\D`).ReplaceAllString(result[1], "-")
-			index = 2
-		}
-	}
-
-	if index != 0 {
-		if result[index] != "" {
-			if result[index] == "stable" {
-				return version
-			}
-
-			version = version + "-" + expandStability(result[index])
-			if result[index+1] != "" {
-				version = version + result[index+1]
-			}
-		}
-
-		if result[index+2] != "" {
-			version = version + "-dev"
-		}
-
-		return version
-	}
-
-	result = RegFind(`(?i)(.*?)[.-]?dev$`, version)
-	if result != nil {
-		return normalizeBranch(result[1])
-	}
-
-	return version
-}
-
-func normalizeBranch(name string) string {
-	name = strings.Trim(name, " ")
-
-	if name == "master" || name == "trunk" || name == "default" {
-		return Normalize(name)
-	}
-
-	replace := strings.NewReplacer("*", "9999999", "x", "9999999")
-
-	matched := regexpBranchNormalize.FindAllStringSubmatch(name, -1)
-	if matched != nil {
-		name = ""
-		for _, val := range matched[0][1:5] {
-			if val != "" {
-				name = name + replace.Replace(val)
-			} else {
-				name = name + ".9999999"
-			}
-		}
-
-		return name + "-dev"
-
-	}
-
-	if strings.HasSuffix(strings.ToLower(name), "-dev") {
-		return name
-	}
-
-	return "dev-" + name
-}

vendor/github.com/mcuadros/go-version/sort.go

@@ -1,36 +0,0 @@
-package version
-
-import (
-	"sort"
-)
-
-// Sorts a string slice of version number strings using version.CompareSimple()
-//
-// Example:
-//     version.Sort([]string{"1.10-dev", "1.0rc1", "1.0", "1.0-dev"})
-//     Returns []string{"1.0-dev", "1.0rc1", "1.0", "1.10-dev"}
-//
-func Sort(versionStrings []string) {
-	versions := versionSlice(versionStrings)
-	sort.Sort(versions)
-}
-
-type versionSlice []string
-
-func (s versionSlice) Len() int {
-	return len(s)
-}
-
-func (s versionSlice) Less(i, j int) bool {
-	cmp := CompareSimple(Normalize(s[i]), Normalize(s[j]))
-	if cmp == 0 {
-		return s[i] < s[j]
-	}
-	return cmp < 0
-}
-
-func (s versionSlice) Swap(i, j int) {
-	tmp := s[j]
-	s[j] = s[i]
-	s[i] = tmp
-}

vendor/github.com/mcuadros/go-version/stability.go

@@ -1,83 +0,0 @@
-package version
-
-import (
-	"regexp"
-	"strings"
-)
-
-const (
-	Development = iota
-	Alpha
-	Beta
-	RC
-	Stable
-)
-
-func expandStability(stability string) string {
-	stability = strings.ToLower(stability)
-
-	switch stability {
-	case "a":
-		return "alpha"
-	case "b":
-		return "beta"
-	case "p":
-		return "patch"
-	case "pl":
-		return "patch"
-	case "rc":
-		return "RC"
-	}
-
-	return stability
-}
-
-func parseStability(version string) string {
-	version = regexp.MustCompile(`(?i)#.+$`).ReplaceAllString(version, " ")
-	version = strings.ToLower(version)
-
-	if strings.HasPrefix(version, "dev-") || strings.HasSuffix(version, "-dev") {
-		return "dev"
-	}
-
-	result := RegFind(`(?i)^v?(\d{1,3})(\.\d+)?(\.\d+)?(\.\d+)?`+modifierRegex+`$`, version)
-	if result != nil {
-		if len(result) > 3 {
-			return "dev"
-		}
-	}
-
-	if result[1] != "" {
-		if "beta" == result[1] || "b" == result[1] {
-			return "beta"
-		}
-		if "alpha" == result[1] || "a" == result[1] {
-			return "alpha"
-		}
-		if "rc" == result[1] {
-			return "RC"
-		}
-	}
-
-	return "stable"
-}
-
-func GetStability(version string) int {
-	result := RegFind(`(?i)(stable|RC|beta|alpha|dev)`, Normalize(version))
-	if len(result) == 0 {
-		return Stable
-	}
-
-	switch result[1] {
-	case "dev":
-		return Development
-	case "alpha":
-		return Alpha
-	case "beta":
-		return Beta
-	case "RC":
-		return RC
-	}
-
-	return Stable
-}

vendor/modules.txt

@@ -423,6 +423,9 @@ github.com/hashicorp/go-cleanhttp
 # github.com/hashicorp/go-retryablehttp v0.6.6
 ## explicit
 github.com/hashicorp/go-retryablehttp
+# github.com/hashicorp/go-version v1.2.1
+## explicit
+github.com/hashicorp/go-version
 # github.com/hashicorp/hcl v1.0.0
 github.com/hashicorp/hcl
 github.com/hashicorp/hcl/hcl/ast
@@ -547,9 +550,6 @@ github.com/mattn/go-runewidth
 github.com/mattn/go-sqlite3
 # github.com/matttproud/golang_protobuf_extensions v1.0.1
 github.com/matttproud/golang_protobuf_extensions/pbutil
-# github.com/mcuadros/go-version v0.0.0-20190308113854-92cdf37c5b75
-## explicit
-github.com/mcuadros/go-version
 # github.com/mgechev/dots v0.0.0-20190921121421-c36f7dcfbb81
 ## explicit
 github.com/mgechev/dots