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This commit is contained in:
Vincent Batts 2015-08-11 21:59:23 -04:00
parent e2a62d6b0d
commit 5c8d5cacba
13 changed files with 265 additions and 50 deletions
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31
tar/storage/entry.go
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@ -9,36 +9,41 @@ func (e Entries) Len() int { return len(e) }
func (e Entries) Swap(i, j int) { e[i], e[j] = e[j], e[i] }
func (e Entries) Less(i, j int) bool { return e[i].Position < e[j].Position }
// Type of Entry
type Type int
// EntryType is the type of Entry
type EntryType int
const (
// FileType represents a file payload from the tar stream.
// FileCheckEntry represents a file payload from the tar stream.
//
// This will be used to map to relative paths on disk. Only Size > 0 will get
// read into a resulting output stream (due to hardlinks).
FileType Type = 1 + iota
// SegmentType represents a raw bytes segment from the archive stream. These raw
FileCheckEntry EntryType = 1 + iota
// SegmentEntry represents a raw bytes segment from the archive stream. These raw
// byte segments consist of the raw headers and various padding.
//
// Its payload is to be marshalled base64 encoded.
SegmentType
SegmentEntry
// VerficationEntry is a structure of keywords for validating the on-disk
// file attributes against the attributes of the Tar archive file headers
VerficationEntry
)
// Entry is the structure for packing and unpacking the information read from
// the Tar archive.
//
// FileType Payload checksum is using `hash/crc64` for basic file integrity,
// FileCheckEntry Payload checksum is using `hash/crc64` for basic file integrity,
// _not_ for cryptography.
// From http://www.backplane.com/matt/crc64.html, CRC32 has almost 40,000
// collisions in a sample of 18.2 million, CRC64 had none.
type Entry struct {
Type Type `json:"type"`
Name string `json:"name,omitempty"`
NameRaw []byte `json:"name_raw,omitempty"`
Size int64 `json:"size,omitempty"`
Payload []byte `json:"payload"` // SegmentType stores payload here; FileType stores crc64 checksum here;
Position int `json:"position"`
Type EntryType `json:"type"`
Name string `json:"name,omitempty"`
NameRaw []byte `json:"name_raw,omitempty"`
Size int64 `json:"size,omitempty"`
Payload []byte `json:"payload"` // SegmentType stores payload here; FileType stores crc64 checksum here;
Position int `json:"position"`
}
// SetName will check name for valid UTF-8 string, and set the appropriate