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ArtifactType.java
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76 lines (67 loc) · 2.01 KB
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/*-
* =LICENSE=
* ORAS Java SDK
* ===
* Copyright (C) 2024 - 2025 ORAS
* ===
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =LICENSEEND=
*/
package land.oras;
import land.oras.exception.OrasException;
import land.oras.utils.Const;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;
/**
* Class for artifact type
*/
@NullMarked
public class ArtifactType {
private final String mediaType;
private ArtifactType(String mediaType) {
this.mediaType = mediaType;
}
/**
* Get the media type
* @return The media type
*/
public String getMediaType() {
return mediaType;
}
@Override
public String toString() {
return mediaType;
}
/**
* Create an artifact type
* @param artifactType The artifact type. Can be null
* @return The artifact type
*/
public static ArtifactType from(@Nullable String artifactType) {
if (artifactType == null) {
return unknown();
}
// Must match https://datatracker.ietf.org/doc/html/rfc6838
if (!artifactType.matches("^[a-zA-Z0-9!#$&-^_]+/[a-zA-Z0-9!#$&-^_]+$")) {
throw new OrasException("Invalid artifact type: %s".formatted(artifactType));
}
return new ArtifactType(artifactType);
}
/**
* Create an unknown artifact type
* @return The unknown artifact type
*/
public static ArtifactType unknown() {
return new ArtifactType(Const.DEFAULT_ARTIFACT_MEDIA_TYPE);
}
}