82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
// Copyright 2019 Drone IO, Inc.
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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 image
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import "github.com/docker/distribution/reference"
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// Trim returns the short image name without tag.
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func Trim(name string) string {
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ref, err := reference.ParseAnyReference(name)
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if err != nil {
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return name
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}
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named, err := reference.ParseNamed(ref.String())
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if err != nil {
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return name
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}
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named = reference.TrimNamed(named)
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return reference.FamiliarName(named)
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}
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// Expand returns the fully qualified image name.
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func Expand(name string) string {
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ref, err := reference.ParseAnyReference(name)
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if err != nil {
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return name
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}
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named, err := reference.ParseNamed(ref.String())
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if err != nil {
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return name
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}
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named = reference.TagNameOnly(named)
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return named.String()
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}
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// Match returns true if the image name matches
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// an image in the list. Note the image tag is not used
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// in the matching logic.
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func Match(from string, to ...string) bool {
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from = Trim(from)
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for _, match := range to {
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if from == Trim(match) {
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return true
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}
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}
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return false
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}
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// MatchTag returns true if the image name matches
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// an image in the list, including the tag.
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func MatchTag(a, b string) bool {
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return Expand(a) == Expand(b)
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}
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// MatchHostname returns true if the image hostname
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// matches the specified hostname.
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func MatchHostname(image, hostname string) bool {
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ref, err := reference.ParseAnyReference(image)
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if err != nil {
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return false
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}
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named, err := reference.ParseNamed(ref.String())
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if err != nil {
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return false
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}
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if hostname == "index.docker.io" {
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hostname = "docker.io"
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}
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return reference.Domain(named) == hostname
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}
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