tarsum

package

v0.1.0 Latest Latest Go to latest Published: Jul 27, 2015 License: Apache-2.0, Apache-2.0 Imports: 15 Imported by: 0

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Repository

github.com/dmcgowan/dockramp

Links

Open Source Insights

README ¶

tarsum

Docs: http://godoc.org/github.com/jlhawn/tarsum

Resumable Tarsum Digest which also implements the hash.Hash interface.

Documentation ¶

Index ¶

Variables
type Digest
- func NewDigest(version Version) (*Digest, error)
type Version
- func GetVersionFromTarsum(tarsum string) (Version, error)
- func GetVersions() []Version
- func (tsv Version) String() string

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	ErrNotVersion            = errors.New("string does not include a TarSum Version")
	ErrVersionNotImplemented = errors.New("TarSum Version is not yet implemented")
)

Errors that may be returned by functions in this package

Functions ¶

This section is empty.

Types ¶

type Digest ¶

type Digest struct {
	// contains filtered or unexported fields
}

Digest implements a write-driven interface for calculating TarSums

func NewDigest ¶

func NewDigest(version Version) (*Digest, error)

func (*Digest) BlockSize ¶

func (tsd *Digest) BlockSize() int

func (*Digest) Finished ¶

func (tsd *Digest) Finished() bool

func (*Digest) Label ¶

func (tsd *Digest) Label() string

func (*Digest) Len ¶

func (tsd *Digest) Len() int64

Len returns the number of bytes written to this digest.

func (*Digest) Reset ¶

func (tsd *Digest) Reset()

func (*Digest) Restore ¶

func (tsd *Digest) Restore(state []byte) error

func (*Digest) Size ¶

func (tsd *Digest) Size() int

func (*Digest) State ¶

func (tsd *Digest) State() ([]byte, error)

func (*Digest) Sum ¶

func (tsd *Digest) Sum(extra []byte) []byte

func (*Digest) SumString ¶

func (tsd *Digest) SumString(extra []byte) string

func (*Digest) Write ¶

func (tsd *Digest) Write(p []byte) (n int, err error)

type Version ¶

type Version int

versioning of the TarSum algorithm based on the prefix of the hash used i.e. "tarsum+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b"

const (
	Version0 Version = iota
	Version1
	// NOTE: this variable will be either the latest or an unsettled next-version of the TarSum calculation
	VersionDev
)

Prefix of "tarsum"

func GetVersionFromTarsum ¶

func GetVersionFromTarsum(tarsum string) (Version, error)

GetVersionFromTarsum returns the Version from the provided string

func GetVersions ¶

func GetVersions() []Version

Get a list of all known tarsum Version

func (Version) String ¶

func (tsv Version) String() string

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
archive
tar Package tar implements access to tar archives.	Package tar implements access to tar archives.
sha256 Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4.	Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4.

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