/usr/share/gocode/src/github.com/stevvooe/resumable/resumable.go is in golang-github-stevvooe-resumable-dev 0.0~git20150521.0.51ad441-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | // Package resumable registers resumable versions of hash functions. Resumable
// varieties of hash functions are available via the standard crypto package.
// Support can be checked by type assertion against the resumable.Hash
// interface.
//
// While one can use these sub-packages directly, it makes more sense to
// register them using side-effect imports:
//
// import _ "github.com/stevvooe/resumable/sha256"
//
// This will make the resumable hashes available to the application through
// the standard crypto package. For example, if a new sha256 is required, one
// should use the following:
//
// h := crypto.SHA256.New()
//
// Such a features allows one to control the inclusion of resumable hash
// support in a single file. Applications that require the resumable hash
// implementation can type switch to detect support, while other parts of the
// application can be completely oblivious to the presence of the alternative
// hash functions.
//
// Also note that the implementations available in this package are completely
// untouched from their Go counterparts in the standard library. Only an extra
// file is added to each package to implement the extra resumable hash
// functions.
package resumable
import "hash"
// Hash is the common interface implemented by all resumable hash functions.
type Hash interface {
hash.Hash
// Len returns the number of bytes written to the Hash so far.
Len() int64
// State returns a snapshot of the state of the Hash.
State() ([]byte, error)
// Restore resets the Hash to the given state.
Restore(state []byte) error
}
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