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package testgit
import (
"bytes"
"iter"
"path/filepath"
"strings"
"testing"
"lindenii.org/go/furgit/object/id"
)
// PackObjectsOptions controls one pack-objects invocation.
type PackObjectsOptions struct {
// RevIndex requests writing a .rev reverse index alongside the pack.
RevIndex bool
}
// PackObjects packs the supplied objects with git pack-objects
// into a temporary directory,
// and returns the artifact path prefix "<dir>/pack-<hash>",
// to which ".pack", ".idx", and ".rev" suffixes apply.
func (repo *Repo) PackObjects(tb testing.TB, oids iter.Seq[id.ObjectID], opts PackObjectsOptions) (string, error) {
tb.Helper()
dir := tb.TempDir()
var stdin bytes.Buffer
for oid := range oids {
stdin.WriteString(oid.String())
stdin.WriteByte('\n')
}
revIndex := "false"
if opts.RevIndex {
revIndex = "true"
}
out, err := repo.run(tb, &stdin,
"git", "-c", "pack.writeReverseIndex="+revIndex,
"pack-objects", "--end-of-options", filepath.Join(dir, "pack"))
if err != nil {
return "", err
}
return filepath.Join(dir, "pack-"+strings.TrimSpace(string(out))), nil
}
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