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|
package ingest
import (
"bytes"
"errors"
"io"
objectid "codeberg.org/lindenii/furgit/object/id"
)
func discardZeroObjectPack(
src io.Reader,
algo objectid.Algorithm,
opts Options,
headerRaw [packHeaderSize]byte,
) (Result, error) {
hashImpl, err := algo.New()
if err != nil {
return Result{}, err
}
_, _ = hashImpl.Write(headerRaw[:])
trailer := make([]byte, algo.Size())
_, err = io.ReadFull(src, trailer)
if err != nil {
return Result{}, &PackTrailerMismatchError{}
}
computed := hashImpl.Sum(nil)
if !bytes.Equal(computed, trailer) {
return Result{}, &PackTrailerMismatchError{}
}
if opts.RequireTrailingEOF {
var probe [1]byte
n, err := src.Read(probe[:])
if n > 0 || err == nil {
return Result{}, errors.New("packfile/ingest: pack has trailing garbage")
}
if err != io.EOF {
return Result{}, err
}
}
packHash, err := objectid.FromBytes(algo, trailer)
if err != nil {
return Result{}, err
}
return Result{
PackHash: packHash,
ObjectCount: 0,
}, nil
}
|
