mirror of
https://github.com/clearlinux/rkt.git
synced 2026-08-19 13:36:39 +00:00
Jonathan Boulle
9685f37575
Inspired by a similar change in the Kubernetes project [1], this changes the copyright header to the more generic "The rkt Authors" rather than "CoreOS, Inc.", which is only sometimes correct. https://github.com/GoogleCloudPlatform/kubernetes/commit/6b3a6e6b983f967c88d14d26542ec6e30c49ebd3
75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
// Copyright 2014 The rkt Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package store
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import (
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"compress/bzip2"
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"compress/gzip"
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"errors"
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"fmt"
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"io"
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"net/url"
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"strings"
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"github.com/coreos/rkt/Godeps/_workspace/src/github.com/appc/spec/aci"
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)
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// blockTransform creates a path slice from the given string to use as a
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// directory prefix. The string must be in hash format:
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// "sha256-abcdefgh"... -> []{"sha256", "ab"}
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// Right now it just copies the default of git which is a two byte prefix. We
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// will likely want to add re-sharding later.
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func blockTransform(s string) []string {
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// TODO(philips): use spec/types.Hash after export typ field
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parts := strings.SplitN(s, "-", 2)
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if len(parts) != 2 {
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panic(fmt.Errorf("blockTransform should never receive non-hash, got %v", s))
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}
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return []string{
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parts[0],
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parts[1][0:2],
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}
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}
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func parseAlways(s string) *url.URL {
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u, _ := url.Parse(s)
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return u
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}
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func decompress(rs io.Reader, typ aci.FileType) (io.Reader, error) {
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var (
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dr io.Reader
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err error
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)
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switch typ {
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case aci.TypeGzip:
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dr, err = gzip.NewReader(rs)
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if err != nil {
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return nil, err
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}
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case aci.TypeBzip2:
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dr = bzip2.NewReader(rs)
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case aci.TypeXz:
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dr = aci.XzReader(rs)
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case aci.TypeTar:
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dr = rs
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case aci.TypeUnknown:
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return nil, errors.New("error: unknown image filetype")
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default:
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return nil, errors.New("no type returned from DetectFileType?")
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}
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return dr, nil
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}
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