コード例 #1
0
ファイル: indexpack.go プロジェクト: gameduell/kythe
func unpackIndex(ctx context.Context, pack *indexpack.Archive, dir string) error {
	fetcher := pack.Fetcher(ctx)
	return pack.ReadUnits(ctx, formatKey, func(u interface{}) error {
		unit, ok := u.(*apb.CompilationUnit)
		if !ok {
			return fmt.Errorf("%T is not a CompilationUnit", u)
		}
		idx, err := kindex.FromUnit(unit, fetcher)
		if err != nil {
			return fmt.Errorf("error creating kindex: %v", err)
		}
		path := kindexPath(dir, idx)
		if !*quiet {
			log.Println("Writing compilation unit to", path)
		}
		f, err := vfs.Create(ctx, path)
		if err != nil {
			return fmt.Errorf("error creating output file: %v", err)
		}
		if _, err := idx.WriteTo(f); err != nil {
			f.Close() // try to close file before returning
			return fmt.Errorf("error writing output file: %v", err)
		}
		return f.Close()
	})
}
コード例 #2
0
ファイル: indexpack.go プロジェクト: gameduell/kythe
func main() {
	flag.Parse()

	if *toArchive != "" && *fromArchive != "" {
		fmt.Fprintln(os.Stderr, "ERROR: --to_archive and --from_archive are mutually exclusive")
		flag.Usage()
	} else if *toArchive != "" && *viewArchive != "" {
		fmt.Fprintln(os.Stderr, "ERROR: --to_archive and --view_archive are mutually exclusive")
		flag.Usage()
	} else if *fromArchive != "" && *viewArchive != "" {
		fmt.Fprintln(os.Stderr, "ERROR: --from_archive and --view_archive are mutually exclusive")
		flag.Usage()
	} else if *toArchive == "" && *fromArchive == "" && *viewArchive == "" {
		fmt.Fprintln(os.Stderr, "ERROR: One of [--to_archive --from_archive --view_archive] must be specified")
		flag.Usage()
	}

	archiveRoot := *toArchive
	if archiveRoot == "" {
		archiveRoot = *fromArchive
	}
	if archiveRoot == "" {
		archiveRoot = *viewArchive
	}

	ctx := context.Background()
	var err error

	opts := []indexpack.Option{indexpack.UnitType(apb.CompilationUnit{})}
	if strings.HasPrefix(archiveRoot, "gs://") {
		path := strings.Trim(strings.TrimPrefix(archiveRoot, "gs://"), "/")
		parts := strings.SplitN(path, "/", 2)
		ctx, err = oauth2Config.Context(ctx)
		if err != nil {
			log.Fatal(err)
		}
		opts = append(opts, indexpack.FS(gcs.FS{parts[0]}))
		if len(parts) == 2 {
			archiveRoot = parts[1]
		} else {
			archiveRoot = "/"
		}
	}

	pack, err := indexpack.CreateOrOpen(ctx, archiveRoot, opts...)
	if err != nil {
		log.Fatalf("Error opening indexpack at %q: %v", archiveRoot, err)
	}

	if *toArchive != "" {
		if len(flag.Args()) == 0 {
			log.Println("WARNING: no kindex file paths given")
		}
		for _, path := range flag.Args() {
			kindex, err := kindex.Open(ctx, path)
			if err != nil {
				log.Fatalf("Error opening kindex at %q: %v", path, err)
			}
			if err := packIndex(ctx, pack, kindex); err != nil {
				log.Fatalf("Error packing kindex at %q into %q: %v", path, pack.Root(), err)
			}
		}
	} else if *fromArchive != "" {
		var dir string
		if len(flag.Args()) > 1 {
			fmt.Fprintf(os.Stderr, "ERROR: Too many positional arguments for --from_archive: %v\n", flag.Args())
			flag.Usage()
		} else if len(flag.Args()) == 1 {
			dir = flag.Arg(0)
			if err := os.MkdirAll(dir, os.ModePerm); err != nil {
				log.Fatalf("Error creating directory %q: %v", dir, err)
			}
		}
		if err := unpackIndex(ctx, pack, dir); err != nil {
			log.Fatalf("Error unpacking compilation units at %q: %v", pack.Root(), err)
		}
	} else {
		en := json.NewEncoder(os.Stdout)
		fetcher := pack.Fetcher(ctx)
		displayCompilation := func(i interface{}) error {
			cu := i.(*apb.CompilationUnit)
			if *printFiles {
				idx, err := kindex.FromUnit(cu, fetcher)
				if err != nil {
					return fmt.Errorf("error reading files for compilation: %v", err)
				}
				return en.Encode(idx)
			}
			return en.Encode(cu)
		}
		if len(flag.Args()) == 0 {
			if err := pack.ReadUnits(ctx, formatKey, displayCompilation); err != nil {
				log.Fatal(err)
			}
		} else {
			for _, digest := range flag.Args() {
				if err := pack.ReadUnit(ctx, formatKey, digest, displayCompilation); err != nil {
					log.Fatal(err)
				}
			}
		}
	}
}