syncthing/files/set_anal.go
2014-04-13 14:30:55 +02:00

45 lines
689 B
Go

//+build anal
package files
import (
"crypto/md5"
"github.com/calmh/syncthing/scanner"
)
type key struct {
Name string
Version uint64
Modified int64
Hash [md5.Size]byte
}
func keyFor(f scanner.File) key {
h := md5.New()
for _, b := range f.Blocks {
h.Write(b.Hash)
}
return key{
Name: f.Name,
Version: f.Version,
Modified: f.Modified,
Hash: md5.Sum(nil),
}
}
func (a key) newerThan(b key) bool {
if a.Version != b.Version {
return a.Version > b.Version
}
if a.Modified != b.Modified {
return a.Modified > b.Modified
}
for i := 0; i < md5.Size; i++ {
if a.Hash[i] != b.Hash[i] {
return a.Hash[i] > b.Hash[i]
}
}
return false
}