/// <summary>
/// Determines the packages needed for merging, including dependencies if necessary.
/// </summary>
/// <param name="distarr">packages selected for merging</param>
/// <param name="mopts">merge options</param>
/// <param name="downloader">the downloader</param>
/// <param name="scheduled">output list of packages scheduled for merge</param>
private void ScheduleMerges(IDistribution[] distarr, MergeOptions mopts, Downloader downloader,
out List<MergeEventArgs> scheduled)
{
scheduled = new List<MergeEventArgs>();
DependencyGraph dg = DependencyGraph.Compute(distarr);
IDistribution[] distdeparr = dg.SortedNodes.ToArray();
DependencyGraph.Conflict[] conflicts = dg.FindSlotConflicts();
if (conflicts.Length > 0)
throw new SlotConflictException(conflicts);
for (int i = 0; i < distdeparr.Length; i++) {
IDistribution dist = distdeparr[i];
Atom current = _pkgmgr
.FindPackages(Atom.Parse(dist.Package.FullName, AtomParseOptions.WithoutVersion))
.Where(n => n.Slot == dist.Slot)
.SingleOrDefault();
bool realselect = distarr.Contains(dist);
if (!realselect && current != null && !mopts.HasFlag(MergeOptions.Deep) && dg.CheckSatisfies(current))
dist = dist.PortsTree.Lookup(current);
MergeEventArgs mea = new MergeEventArgs();
mea.Previous = current;
mea.Selected = realselect && !mopts.HasFlag(MergeOptions.OneShot);
mea.Distribution = dist;
mea.FetchOnly = mopts.HasFlag(MergeOptions.FetchOnly);
mea.HardMask = dist.PortsTree.IsHardMasked(dist);
mea.KeywordMask = dist.PortsTree.IsKeywordMasked(dist);
mea.KeywordsNeeded = dist.Keywords
.Where(kw => _cfg.AcceptKeywords.Contains(kw) ||
_cfg.AcceptKeywords.Contains(Distribution.GetKeywordName(kw)))
.ToArray();
if (!mopts.HasFlag(MergeOptions.Pretend) && (mea.HardMask || mea.KeywordMask))
throw new MaskedPackageException(dist.Package.FullName);
if (current == null)
mea.Flags |= MergeFlags.New;
if (!mea.Flags.HasFlag(MergeFlags.New) && current.Version == dist.Version)
mea.Flags |= MergeFlags.Replacing;
if (!mea.Flags.HasFlag(MergeFlags.New) && !mea.Flags.HasFlag(MergeFlags.Replacing))
mea.Flags |= MergeFlags.Updating;
if (!mea.Flags.HasFlag(MergeFlags.New) && current.Version > dist.Version)
mea.Flags |= MergeFlags.Downgrading;
if (dist.Slot > 0)
mea.Flags |= MergeFlags.Slot;
if (dist.Interactive)
mea.Flags |= MergeFlags.Interactive;
/* TODO block */
if (mea.Flags.HasFlag(MergeFlags.Updating))
mea.Selected = _pkgmgr.IsSelected(dist.Atom);
if (dist.FetchRestriction && Distribution.CheckSourcesExist(dist, _cfg.DistFilesDir))
mea.Flags |= MergeFlags.FetchExists;
else if (dist.FetchRestriction)
mea.Flags |= MergeFlags.FetchNeeded;
if (mea.Flags.HasFlag(MergeFlags.Replacing) &&
(!realselect || mopts.HasFlag(MergeOptions.NoReplace)) && !mopts.HasFlag(MergeOptions.EmptyTree))
continue;
if (mea.Flags.HasFlag(MergeFlags.FetchNeeded) && !mopts.HasFlag(MergeOptions.Pretend)) {
throw new InstallException("Fetch restriction is enabled for " + dist.ToString()
+ "\nCopy the package archive into " + _cfg.DistFilesDir);
}
if (!(mea.Flags.HasFlag(MergeFlags.FetchExists) || mea.Flags.HasFlag(MergeFlags.FetchNeeded)))
mea.FetchHandle = downloader.Enqueue(dist);
scheduled.Add(mea);
}
}