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| 1 | +// Copyright (c) .NET Foundation and contributors. All rights reserved. |
| 2 | +// Licensed under the MIT license. See LICENSE file in the project root for full license information. |
| 3 | + |
| 4 | +using Microsoft.Build.Framework; |
| 5 | +using System.Collections.Generic; |
| 6 | +using System.Linq; |
| 7 | + |
| 8 | +namespace Microsoft.NET.Build.Tasks.ConflictResolution |
| 9 | +{ |
| 10 | + public class ResolveOverlappingItemGroupConflicts : TaskBase |
| 11 | + { |
| 12 | + [Required] |
| 13 | + public ITaskItem[] ItemGroup1 { get; set; } |
| 14 | + |
| 15 | + [Required] |
| 16 | + public ITaskItem[] ItemGroup2 { get; set; } |
| 17 | + |
| 18 | + public string[] PreferredPackages { get; set; } |
| 19 | + |
| 20 | + public ITaskItem[] PackageOverrides { get; set; } |
| 21 | + |
| 22 | + [Output] |
| 23 | + public ITaskItem[] RemovedItemGroup1 { get; set; } |
| 24 | + |
| 25 | + [Output] |
| 26 | + public ITaskItem[] RemovedItemGroup2 { get; set; } |
| 27 | + |
| 28 | + protected override void ExecuteCore() |
| 29 | + { |
| 30 | + var packageRanks = new PackageRank(PreferredPackages); |
| 31 | + var packageOverrides = new PackageOverrideResolver<ConflictItem>(PackageOverrides); |
| 32 | + var conflicts = new HashSet<ConflictItem>(); |
| 33 | + |
| 34 | + var conflictItemGroup1 = GetConflictTaskItems(ItemGroup1, ConflictItemType.CopyLocal); |
| 35 | + var conflictItemGroup2 = GetConflictTaskItems(ItemGroup2, ConflictItemType.CopyLocal); |
| 36 | + |
| 37 | + using (var conflictResolver = new ConflictResolver<ConflictItem>(packageRanks, packageOverrides, Log)) |
| 38 | + { |
| 39 | + var allConflicts = conflictItemGroup1.Concat(conflictItemGroup2); |
| 40 | + conflictResolver.ResolveConflicts(allConflicts, |
| 41 | + ci => ItemUtilities.GetReferenceTargetPath(ci.OriginalItem), |
| 42 | + (ConflictItem winner, ConflictItem loser) => { conflicts.Add(loser); }); |
| 43 | + |
| 44 | + var conflictItems = conflicts.Select(i => i.OriginalItem); |
| 45 | + RemovedItemGroup1 = ItemGroup1.Intersect(conflictItems).ToArray(); |
| 46 | + RemovedItemGroup2 = ItemGroup2.Intersect(conflictItems).ToArray(); |
| 47 | + } |
| 48 | + } |
| 49 | + |
| 50 | + private IEnumerable<ConflictItem> GetConflictTaskItems(ITaskItem[] items, ConflictItemType itemType) |
| 51 | + { |
| 52 | + return (items != null) ? items.Select(i => new ConflictItem(i, itemType)) : Enumerable.Empty<ConflictItem>(); |
| 53 | + } |
| 54 | + } |
| 55 | +} |
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