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	Refactor modules/git global variables (#29376)
Move some global variables into a struct to improve maintainability
This commit is contained in:
		@@ -33,16 +33,18 @@ var (
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	// DefaultContext is the default context to run git commands in, must be initialized by git.InitXxx
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	DefaultContext context.Context
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	SupportProcReceive bool // >= 2.29
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	SupportHashSha256  bool // >= 2.42, SHA-256 repositories no longer an ‘experimental curiosity’
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	DefaultFeatures struct {
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		GitVersion *version.Version
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	gitVersion *version.Version
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		SupportProcReceive bool // >= 2.29
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		SupportHashSha256  bool // >= 2.42, SHA-256 repositories no longer an ‘experimental curiosity’
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	}
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)
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// loadGitVersion tries to get the current git version and stores it into a global variable
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func loadGitVersion() error {
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	// doesn't need RWMutex because it's executed by Init()
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	if gitVersion != nil {
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	if DefaultFeatures.GitVersion != nil {
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		return nil
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	}
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@@ -53,7 +55,7 @@ func loadGitVersion() error {
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	ver, err := parseGitVersionLine(strings.TrimSpace(stdout))
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	if err == nil {
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		gitVersion = ver
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		DefaultFeatures.GitVersion = ver
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	}
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	return err
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}
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@@ -93,7 +95,7 @@ func SetExecutablePath(path string) error {
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		return err
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	}
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	if gitVersion.LessThan(versionRequired) {
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	if DefaultFeatures.GitVersion.LessThan(versionRequired) {
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		moreHint := "get git: https://git-scm.com/download/"
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		if runtime.GOOS == "linux" {
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			// there are a lot of CentOS/RHEL users using old git, so we add a special hint for them
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@@ -102,22 +104,22 @@ func SetExecutablePath(path string) error {
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				moreHint = "get git: https://git-scm.com/download/linux and https://ius.io"
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			}
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		}
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		return fmt.Errorf("installed git version %q is not supported, Gitea requires git version >= %q, %s", gitVersion.Original(), RequiredVersion, moreHint)
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		return fmt.Errorf("installed git version %q is not supported, Gitea requires git version >= %q, %s", DefaultFeatures.GitVersion.Original(), RequiredVersion, moreHint)
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	}
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	if err = checkGitVersionCompatibility(gitVersion); err != nil {
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		return fmt.Errorf("installed git version %s has a known compatibility issue with Gitea: %w, please upgrade (or downgrade) git", gitVersion.String(), err)
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	if err = checkGitVersionCompatibility(DefaultFeatures.GitVersion); err != nil {
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		return fmt.Errorf("installed git version %s has a known compatibility issue with Gitea: %w, please upgrade (or downgrade) git", DefaultFeatures.GitVersion.String(), err)
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	}
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	return nil
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}
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// VersionInfo returns git version information
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func VersionInfo() string {
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	if gitVersion == nil {
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	if DefaultFeatures.GitVersion == nil {
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		return "(git not found)"
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	}
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	format := "%s"
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	args := []any{gitVersion.Original()}
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	args := []any{DefaultFeatures.GitVersion.Original()}
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	// Since git wire protocol has been released from git v2.18
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	if setting.Git.EnableAutoGitWireProtocol && CheckGitVersionAtLeast("2.18") == nil {
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		format += ", Wire Protocol %s Enabled"
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@@ -187,9 +189,9 @@ func InitFull(ctx context.Context) (err error) {
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	if CheckGitVersionAtLeast("2.9") == nil {
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		globalCommandArgs = append(globalCommandArgs, "-c", "credential.helper=")
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	}
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	SupportProcReceive = CheckGitVersionAtLeast("2.29") == nil
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	SupportHashSha256 = CheckGitVersionAtLeast("2.42") == nil && !isGogit
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	if SupportHashSha256 {
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	DefaultFeatures.SupportProcReceive = CheckGitVersionAtLeast("2.29") == nil
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	DefaultFeatures.SupportHashSha256 = CheckGitVersionAtLeast("2.42") == nil && !isGogit
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	if DefaultFeatures.SupportHashSha256 {
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		SupportedObjectFormats = append(SupportedObjectFormats, Sha256ObjectFormat)
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	} else {
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		log.Warn("sha256 hash support is disabled - requires Git >= 2.42. Gogit is currently unsupported")
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@@ -254,7 +256,7 @@ func syncGitConfig() (err error) {
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		}
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	}
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	if SupportProcReceive {
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	if DefaultFeatures.SupportProcReceive {
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		// set support for AGit flow
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		if err := configAddNonExist("receive.procReceiveRefs", "refs/for"); err != nil {
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			return err
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@@ -309,15 +311,15 @@ func syncGitConfig() (err error) {
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// CheckGitVersionAtLeast check git version is at least the constraint version
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func CheckGitVersionAtLeast(atLeast string) error {
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	if gitVersion == nil {
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	if DefaultFeatures.GitVersion == nil {
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		panic("git module is not initialized") // it shouldn't happen
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	}
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	atLeastVersion, err := version.NewVersion(atLeast)
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	if err != nil {
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		return err
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	}
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	if gitVersion.Compare(atLeastVersion) < 0 {
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		return fmt.Errorf("installed git binary version %s is not at least %s", gitVersion.Original(), atLeast)
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	if DefaultFeatures.GitVersion.Compare(atLeastVersion) < 0 {
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		return fmt.Errorf("installed git binary version %s is not at least %s", DefaultFeatures.GitVersion.Original(), atLeast)
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	}
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	return nil
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}
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