67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
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package tarball
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"github.com/containers/image/transports"
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"github.com/containers/image/types"
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)
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const (
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transportName = "tarball"
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separator = ":"
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)
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var (
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// Transport implements the types.ImageTransport interface for "tarball:" images,
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// which are makeshift images constructed using one or more possibly-compressed tar
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// archives.
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Transport = &tarballTransport{}
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)
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type tarballTransport struct {
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}
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func (t *tarballTransport) Name() string {
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return transportName
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}
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func (t *tarballTransport) ParseReference(reference string) (types.ImageReference, error) {
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var stdin []byte
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var err error
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filenames := strings.Split(reference, separator)
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for _, filename := range filenames {
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if filename == "-" {
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stdin, err = ioutil.ReadAll(os.Stdin)
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if err != nil {
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return nil, fmt.Errorf("error buffering stdin: %v", err)
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}
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continue
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}
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f, err := os.Open(filename)
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if err != nil {
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return nil, fmt.Errorf("error opening %q: %v", filename, err)
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}
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f.Close()
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}
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ref := &tarballReference{
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transport: t,
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filenames: filenames,
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stdin: stdin,
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}
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return ref, nil
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}
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func (t *tarballTransport) ValidatePolicyConfigurationScope(scope string) error {
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// See the explanation in daemonReference.PolicyConfigurationIdentity.
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return errors.New(`tarball: does not support any scopes except the default "" one`)
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}
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func init() {
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transports.Register(Transport)
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}
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