| /* |
| * Copyright 2022 Google LLC |
| * |
| * 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. |
| */ |
| package com.google.android.libraries.mobiledatadownload.file.transforms; |
| |
| import android.net.Uri; |
| import com.google.android.libraries.mobiledatadownload.file.common.internal.LiteTransformFragments; |
| import com.google.common.collect.ImmutableList; |
| import com.google.mobiledatadownload.TransformProto; |
| |
| /** Helper for Uri classes to handle transform fragments using proto specs. */ |
| public final class TransformProtoFragments { |
| |
| /** Adds this spec to the URI, replacing existing spec if present. */ |
| public static Uri addOrReplaceTransform(Uri uri, TransformProto.Transform spec) { |
| ImmutableList.Builder<String> result = ImmutableList.builder(); |
| ImmutableList<String> oldSpecs = LiteTransformFragments.parseTransformSpecs(uri); |
| String newSpec = TransformProtos.toEncodedSpec(spec); |
| String newSpecName = LiteTransformFragments.parseSpecName(newSpec); |
| for (String oldSpec : oldSpecs) { |
| String oldSpecName = LiteTransformFragments.parseSpecName(oldSpec); |
| if (!oldSpecName.equals(newSpecName)) { |
| result.add(oldSpec); |
| } |
| } |
| result.add(newSpec); |
| return uri.buildUpon() |
| .encodedFragment(LiteTransformFragments.joinTransformSpecs(result.build())) |
| .build(); |
| } |
| |
| private TransformProtoFragments() {} |
| } |