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package archive
import (
"context"
"github.com/containers/image/v5/docker/internal/tarfile"
"github.com/containers/image/v5/internal/private"
"github.com/containers/image/v5/types"
)
type archiveImageSource struct {
*tarfile.Source // Implements most of types.ImageSource
ref archiveReference
}
// newImageSource returns a types.ImageSource for the specified image reference.
// The caller must call .Close() on the returned ImageSource.
func newImageSource(ctx context.Context, sys *types.SystemContext, ref archiveReference) (private.ImageSource, error) {
var archive *tarfile.Reader
var closeArchive bool
if ref.archiveReader != nil {
archive = ref.archiveReader
closeArchive = false
} else {
a, err := tarfile.NewReaderFromFile(sys, ref.path)
if err != nil {
return nil, err
}
archive = a
closeArchive = true
}
src := tarfile.NewSource(archive, closeArchive, ref.Transport().Name(), ref.ref, ref.sourceIndex)
return &archiveImageSource{
Source: src,
ref: ref,
}, nil
}
// Reference returns the reference used to set up this source, _as specified by the user_
// (not as the image itself, or its underlying storage, claims). This can be used e.g. to determine which public keys are trusted for this image.
func (s *archiveImageSource) Reference() types.ImageReference {
return s.ref
}
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