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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Core.WindowsInstaller.Bind
{
using System.Collections.Generic;
using System.Linq;
using WixToolset.Core.Bind;
using WixToolset.Data;
using WixToolset.Data.Tuples;
internal class UpdateMediaSequencesCommand
{
public UpdateMediaSequencesCommand(IntermediateSection section, List<FileFacade> fileFacades)
{
this.Section = section;
this.FileFacades = fileFacades;
}
private IntermediateSection Section { get; }
private List<FileFacade> FileFacades { get; }
public void Execute()
{
var mediaRows = this.Section.Tuples.OfType<MediaTuple>().ToDictionary(t => t.DiskId);
// Calculate sequence numbers and media disk id layout for all file media information objects.
if (SectionType.Module == this.Section.Type)
{
var lastSequence = 0;
// Order by Component to group the files by directory.
var optimized = this.OptimizedFileFacades();
foreach (var facade in optimized)
{
facade.Sequence = ++lastSequence;
}
}
else
{
var lastSequence = 0;
MediaTuple mediaTuple = null;
var patchGroups = new Dictionary<int, List<FileFacade>>();
// sequence the non-patch-added files
var optimized = this.OptimizedFileFacades();
foreach (var facade in optimized)
{
if (null == mediaTuple)
{
mediaTuple = mediaRows[facade.DiskId];
if (SectionType.Patch == this.Section.Type)
{
// patch Media cannot start at zero
lastSequence = mediaTuple.LastSequence ?? 1;
}
}
else if (mediaTuple.DiskId != facade.DiskId)
{
mediaTuple.LastSequence = lastSequence;
mediaTuple = mediaRows[facade.DiskId];
}
if (facade.PatchGroup.HasValue)
{
if (patchGroups.TryGetValue(facade.PatchGroup.Value, out var patchGroup))
{
patchGroup = new List<FileFacade>();
patchGroups.Add(facade.PatchGroup.Value, patchGroup);
}
patchGroup.Add(facade);
}
else if (!facade.FromModule)
{
facade.Sequence = ++lastSequence;
}
}
if (null != mediaTuple)
{
mediaTuple.LastSequence = lastSequence;
mediaTuple = null;
}
// sequence the patch-added files
foreach (var patchGroup in patchGroups.Values)
{
foreach (var facade in patchGroup)
{
if (null == mediaTuple)
{
mediaTuple = mediaRows[facade.DiskId];
}
else if (mediaTuple.DiskId != facade.DiskId)
{
mediaTuple.LastSequence = lastSequence;
mediaTuple = mediaRows[facade.DiskId];
}
facade.Sequence = ++lastSequence;
}
}
if (null != mediaTuple)
{
mediaTuple.LastSequence = lastSequence;
}
}
}
private IEnumerable<FileFacade> OptimizedFileFacades()
{
// TODO: Sort these facades even smarter by directory path and component id
// and maybe file size or file extension and other creative ideas to
// get optimal install speed out of MSI.
return this.FileFacades.OrderBy(f => f.ComponentRef);
}
}
}
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