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package recording
import (
"bytes"
"github.com/kr/binarydist"
)
type patch []byte
type frame []byte
func doDiff(prev, next []byte) (err error, p patch) {
oldReader := bytes.NewReader(prev)
newReader := bytes.NewReader(next)
writer := new(bytes.Buffer)
if err = binarydist.Diff(oldReader, newReader, writer); err != nil {
return
}
return nil, patch(writer.Bytes())
}
func doPatch(cur []byte, p patch) (err error, f frame) {
oldReader := bytes.NewReader(cur)
patchReader := bytes.NewReader(p)
newWriter := new(bytes.Buffer)
if err = binarydist.Patch(oldReader, newWriter, patchReader); err != nil {
return
}
return nil, newWriter.Bytes()
}
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