Golang git.CurrentRef函數代碼示例

func checkoutWithIncludeExclude(include []string, exclude []string) {
	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not checkout")
	}

	pointers, err := lfs.ScanTree(ref)
	if err != nil {
		Panic(err, "Could not scan for Git LFS files")
	}

	var wait sync.WaitGroup
	wait.Add(1)

	c := make(chan *lfs.WrappedPointer)

	go func() {
		checkoutWithChan(c)
		wait.Done()
	}()
	for _, pointer := range pointers {
		if lfs.FilenamePassesIncludeExcludeFilter(pointer.Name, include, exclude) {
			c <- pointer
		}

	}
	close(c)
	wait.Wait()

}

func pullCommand(cmd *cobra.Command, args []string) {
	requireInRepo()

	if len(args) > 0 {
		// Remote is first arg
		if err := git.ValidateRemote(args[0]); err != nil {
			Panic(err, fmt.Sprintf("Invalid remote name '%v'", args[0]))
		}
		lfs.Config.CurrentRemote = args[0]
	} else {
		// Actively find the default remote, don't just assume origin
		defaultRemote, err := git.DefaultRemote()
		if err != nil {
			Panic(err, "No default remote")
		}
		lfs.Config.CurrentRemote = defaultRemote
	}

	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not pull")
	}

	includePaths, excludePaths := determineIncludeExcludePaths(pullIncludeArg, pullExcludeArg)

	c := fetchRefToChan(ref.Sha, includePaths, excludePaths)
	checkoutFromFetchChan(includePaths, excludePaths, c)
}

// Background task, must call waitg.Done() once at end
func pruneTaskGetRetainedWorktree(retainChan chan string, errorChan chan error, waitg *sync.WaitGroup) {
	defer waitg.Done()

	// Retain other worktree HEADs too
	// Working copy, branch & maybe commit is different but repo is shared
	allWorktreeRefs, err := git.GetAllWorkTreeHEADs(lfs.LocalGitStorageDir)
	if err != nil {
		errorChan <- err
		return
	}
	// Don't repeat any commits, worktrees are always on their own branches but
	// may point to the same commit
	commits := lfs.NewStringSet()
	// current HEAD is done elsewhere
	headref, err := git.CurrentRef()
	if err != nil {
		errorChan <- err
		return
	}
	commits.Add(headref.Sha)
	for _, ref := range allWorktreeRefs {
		if commits.Add(ref.Sha) {
			// Worktree is on a different commit
			waitg.Add(1)
			// Don't need to 'cd' to worktree since we share same repo
			go pruneTaskGetRetainedAtRef(ref.Sha, retainChan, errorChan, waitg)
		}
	}

}

func fetchCommand(cmd *cobra.Command, args []string) {
	var refs []string

	if len(args) > 0 {
		// Remote is first arg
		lfs.Config.CurrentRemote = args[0]
	} else {
		trackedRemote, err := git.CurrentRemote()
		if err == nil {
			lfs.Config.CurrentRemote = trackedRemote
		} // otherwise leave as default (origin)
	}
	if len(args) > 1 {
		refs = args[1:]
	} else {
		ref, err := git.CurrentRef()
		if err != nil {
			Panic(err, "Could not fetch")
		}
		refs = []string{ref}
	}

	includePaths, excludePaths := determineIncludeExcludePaths(fetchIncludeArg, fetchExcludeArg)

	// Fetch refs sequentially per arg order; duplicates in later refs will be ignored
	for _, ref := range refs {
		fetchRef(ref, includePaths, excludePaths)
	}

}

func lsFilesCommand(cmd *cobra.Command, args []string) {
	requireInRepo()

	var ref string
	var err error

	if len(args) == 1 {
		ref = args[0]
	} else {
		fullref, err := git.CurrentRef()
		if err != nil {
			Exit(err.Error())
		}
		ref = fullref.Sha
	}

	showOidLen := 10
	if longOIDs {
		showOidLen = 64
	}

	files, err := lfs.ScanTree(ref)
	if err != nil {
		Panic(err, "Could not scan for Git LFS tree: %s", err)
	}

	for _, p := range files {
		Print("%s %s %s", p.Oid[0:showOidLen], lsFilesMarker(p), p.Name)
	}
}

func fetchCommand(cmd *cobra.Command, args []string) {
	requireInRepo()

	var refs []*git.Ref

	if len(args) > 0 {
		// Remote is first arg
		lfs.Config.CurrentRemote = args[0]
	} else {
		trackedRemote, err := git.CurrentRemote()
		if err == nil {
			lfs.Config.CurrentRemote = trackedRemote
		} // otherwise leave as default (origin)
	}

	if len(args) > 1 {
		for _, r := range args[1:] {
			ref, err := git.ResolveRef(r)
			if err != nil {
				Panic(err, "Invalid ref argument")
			}
			refs = append(refs, ref)
		}
	} else {
		ref, err := git.CurrentRef()
		if err != nil {
			Panic(err, "Could not fetch")
		}
		refs = []*git.Ref{ref}
	}

	if fetchAllArg {
		if fetchRecentArg || len(args) > 1 {
			Exit("Cannot combine --all with ref arguments or --recent")
		}
		if fetchIncludeArg != "" || fetchExcludeArg != "" {
			Exit("Cannot combine --all with --include or --exclude")
		}
		if len(lfs.Config.FetchIncludePaths()) > 0 || len(lfs.Config.FetchExcludePaths()) > 0 {
			Print("Ignoring global include / exclude paths to fulfil --all")
		}
		fetchAll()

	} else { // !all
		includePaths, excludePaths := determineIncludeExcludePaths(fetchIncludeArg, fetchExcludeArg)

		// Fetch refs sequentially per arg order; duplicates in later refs will be ignored
		for _, ref := range refs {
			Print("Fetching %v", ref.Name)
			fetchRef(ref.Sha, includePaths, excludePaths)
		}

		if fetchRecentArg || lfs.Config.FetchPruneConfig().FetchRecentAlways {
			fetchRecent(refs, includePaths, excludePaths)
		}
	}
}

func pull(includePaths, excludePaths []string) {

	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not pull")
	}

	c := fetchRefToChan(ref.Sha, includePaths, excludePaths)
	checkoutFromFetchChan(includePaths, excludePaths, c)

}

// Background task, must call waitg.Done() once at end
func pruneTaskGetRetainedCurrentAndRecentRefs(retainChan chan string, errorChan chan error, waitg *sync.WaitGroup) {
	defer waitg.Done()

	// We actually increment the waitg in this func since we kick off sub-goroutines
	// Make a list of what unique commits to keep, & search backward from
	commits := lfs.NewStringSet()
	// Do current first
	ref, err := git.CurrentRef()
	if err != nil {
		errorChan <- err
		return
	}
	commits.Add(ref.Sha)
	waitg.Add(1)
	go pruneTaskGetRetainedAtRef(ref.Sha, retainChan, errorChan, waitg)

	// Now recent
	fetchconf := lfs.Config.FetchPruneConfig()
	if fetchconf.FetchRecentRefsDays > 0 {
		pruneRefDays := fetchconf.FetchRecentRefsDays + fetchconf.PruneOffsetDays
		tracerx.Printf("PRUNE: Retaining non-HEAD refs within %d (%d+%d) days", pruneRefDays, fetchconf.FetchRecentRefsDays, fetchconf.PruneOffsetDays)
		refsSince := time.Now().AddDate(0, 0, -pruneRefDays)
		// Keep all recent refs including any recent remote branches
		refs, err := git.RecentBranches(refsSince, fetchconf.FetchRecentRefsIncludeRemotes, "")
		if err != nil {
			Panic(err, "Could not scan for recent refs")
		}
		for _, ref := range refs {
			if commits.Add(ref.Sha) {
				// A new commit
				waitg.Add(1)
				go pruneTaskGetRetainedAtRef(ref.Sha, retainChan, errorChan, waitg)
			}
		}
	}

	// For every unique commit we've fetched, check recent commits too
	// Only if we're fetching recent commits, otherwise only keep at refs
	if fetchconf.FetchRecentCommitsDays > 0 {
		pruneCommitDays := fetchconf.FetchRecentCommitsDays + fetchconf.PruneOffsetDays
		for commit := range commits.Iter() {
			// We measure from the last commit at the ref
			summ, err := git.GetCommitSummary(commit)
			if err != nil {
				errorChan <- fmt.Errorf("Couldn't scan commits at %v: %v", commit, err)
				continue
			}
			commitsSince := summ.CommitDate.AddDate(0, 0, -pruneCommitDays)
			waitg.Add(1)
			go pruneTaskGetPreviousVersionsOfRef(commit, commitsSince, retainChan, errorChan, waitg)
		}
	}
}

func checkoutWithIncludeExclude(include []string, exclude []string) {
	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not checkout")
	}

	pointers, err := lfs.ScanTree(ref.Sha)
	if err != nil {
		Panic(err, "Could not scan for Git LFS files")
	}

	var wait sync.WaitGroup
	wait.Add(1)

	c := make(chan *lfs.WrappedPointer, 1)

	go func() {
		checkoutWithChan(c)
		wait.Done()
	}()

	// Count bytes for progress
	var totalBytes int64
	for _, pointer := range pointers {
		totalBytes += pointer.Size
	}

	logPath, _ := cfg.Os.Get("GIT_LFS_PROGRESS")
	progress := progress.NewProgressMeter(len(pointers), totalBytes, false, logPath)
	progress.Start()
	totalBytes = 0
	for _, pointer := range pointers {
		totalBytes += pointer.Size
		if lfs.FilenamePassesIncludeExcludeFilter(pointer.Name, include, exclude) {
			progress.Add(pointer.Name)
			c <- pointer
			// not strictly correct (parallel) but we don't have a callback & it's just local
			// plus only 1 slot in channel so it'll block & be close
			progress.TransferBytes("checkout", pointer.Name, pointer.Size, totalBytes, int(pointer.Size))
			progress.FinishTransfer(pointer.Name)
		} else {
			progress.Skip(pointer.Size)
		}
	}
	close(c)
	wait.Wait()
	progress.Finish()

}

func fetchCommand(cmd *cobra.Command, args []string) {
	var refs []string

	if len(args) > 0 {
		refs = args
	} else {
		ref, err := git.CurrentRef()
		if err != nil {
			Panic(err, "Could not fetch")
		}
		refs = []string{ref}
	}

	// Fetch refs sequentially per arg order; duplicates in later refs will be ignored
	for _, ref := range refs {
		fetchRef(ref)
	}

}

func fetchCommand(cmd *cobra.Command, args []string) {
	var refs []*git.Ref

	if len(args) > 0 {
		// Remote is first arg
		lfs.Config.CurrentRemote = args[0]
	} else {
		trackedRemote, err := git.CurrentRemote()
		if err == nil {
			lfs.Config.CurrentRemote = trackedRemote
		} // otherwise leave as default (origin)
	}
	if len(args) > 1 {
		for _, r := range args[1:] {
			ref, err := git.ResolveRef(r)
			if err != nil {
				Panic(err, "Invalid ref argument")
			}
			refs = append(refs, ref)
		}
	} else {
		ref, err := git.CurrentRef()
		if err != nil {
			Panic(err, "Could not fetch")
		}
		refs = []*git.Ref{ref}
	}

	includePaths, excludePaths := determineIncludeExcludePaths(fetchIncludeArg, fetchExcludeArg)

	// Fetch refs sequentially per arg order; duplicates in later refs will be ignored
	for _, ref := range refs {
		Print("Fetching %v", ref.Name)
		fetchRef(ref.Sha, includePaths, excludePaths)
	}

	if fetchRecentArg || lfs.Config.FetchPruneConfig().FetchRecentAlways {
		fetchRecent(refs, includePaths, excludePaths)
	}

}

func checkoutFromFetchChan(include []string, exclude []string, in chan *lfs.WrappedPointer) {
	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not checkout")
	}
	// Need to ScanTree to identify multiple files with the same content (fetch will only report oids once)
	pointers, err := lfs.ScanTree(ref.Sha)
	if err != nil {
		Panic(err, "Could not scan for Git LFS files")
	}

	// Map oid to multiple pointers
	mapping := make(map[string][]*lfs.WrappedPointer)
	for _, pointer := range pointers {
		if lfs.FilenamePassesIncludeExcludeFilter(pointer.Name, include, exclude) {
			mapping[pointer.Oid] = append(mapping[pointer.Oid], pointer)
		}
	}

	// Launch git update-index
	c := make(chan *lfs.WrappedPointer)

	var wait sync.WaitGroup
	wait.Add(1)

	go func() {
		checkoutWithChan(c)
		wait.Done()
	}()

	// Feed it from in, which comes from fetch
	for p := range in {
		// Add all of the files for this oid
		for _, fp := range mapping[p.Oid] {
			c <- fp
		}
	}
	close(c)
	wait.Wait()
}

func lsFilesCommand(cmd *cobra.Command, args []string) {
	var ref string
	var err error

	if len(args) == 1 {
		ref = args[0]
	} else {
		ref, err = git.CurrentRef()
		if err != nil {
			Panic(err, "Could not ls-files")
		}
	}

	pointers, err := lfs.ScanRefs(ref, "")
	if err != nil {
		Panic(err, "Could not scan for Git LFS files")
	}

	for _, p := range pointers {
		Print(p.Name)
	}
}

func pullCommand(cmd *cobra.Command, args []string) {

	if len(args) > 0 {
		// Remote is first arg
		lfs.Config.CurrentRemote = args[0]
	} else {
		trackedRemote, err := git.CurrentRemote()
		if err == nil {
			lfs.Config.CurrentRemote = trackedRemote
		} // otherwise leave as default (origin)
	}

	ref, err := git.CurrentRef()
	if err != nil {
		Panic(err, "Could not pull")
	}

	includePaths, excludePaths := determineIncludeExcludePaths(pullIncludeArg, pullExcludeArg)

	c := fetchRefToChan(ref, includePaths, excludePaths)
	checkoutFromFetchChan(includePaths, excludePaths, c)
}

func lsFilesCommand(cmd *cobra.Command, args []string) {
	var ref string
	var err error

	if len(args) == 1 {
		ref = args[0]
	} else {
		fullref, err := git.CurrentRef()
		if err != nil {
			Panic(err, "Could not ls-files")
		}
		ref = fullref.Sha
	}

	scanOpt := &lfs.ScanRefsOptions{SkipDeletedBlobs: true}
	pointers, err := lfs.ScanRefs(ref, "", scanOpt)
	if err != nil {
		Panic(err, "Could not scan for Git LFS files")
	}

	for _, p := range pointers {
		Print(p.Name)
	}
}