public HgCompareInfo PerformComparison(HgNodeID baseNodeID, HgNodeID headNodeID, bool includeFileDiffs = false)
{
var hgRevsetManager = new HgRevsetManager();
var @base = Changelog[baseNodeID];
var head = Changelog[headNodeID];
var baseAncestors = hgRevsetManager.GetAncestors(this, new HgRevset(@base.Metadata));
var headAncestors = hgRevsetManager.GetAncestors(this, new HgRevset(head.Metadata));
var changesets = GetChangesets(headAncestors - baseAncestors);
if(changesets.Count == 0)
return new HgCompareInfo(@base, head, new List<HgChangeset>(), new List<HgRollupFileDiffInfo>());
var files = changesets.SelectMany(c => c.Files).Distinct().OrderBy(f => f).ToList();
var startManifest = Manifest[@base.ManifestNodeID];
var endManifest = Manifest[head.ManifestNodeID];
//
// Only pick files that were indeed changed between two bounding changesets
var diffs = new List<HgRollupFileDiffInfo>();
if(includeFileDiffs)
{
var changedFiles = files.Where(f => startManifest[f] == null && endManifest[f] != null || startManifest[f] != null && endManifest[f] == null || (startManifest[f] != null && endManifest[f] != null && startManifest[f].FilelogNodeID != endManifest[f].FilelogNodeID)).ToList();
var diffGenerator = new HgDiffGenerator();
diffs = changedFiles.
Select(f => new {
file = f,
start = startManifest[f],
end = endManifest[f]
}).
Select(f => new {
f.file,
start = f.start == null ? null : GetFile(f.start),
end = f.end == null ? null : GetFile(f.end)
}).
Select(f => new {
f.file,
isBinary = f.start != null && f.start.IsBinary || f.end != null && f.end.IsBinary,
f.start,
f.end
}).
Select(f => new {
f.file,
f.isBinary,
start = f.start == null || f.isBinary ? "" : Encoder.DecodeAsUtf8(f.start.Data),
end = f.end == null || f.isBinary ? "" : Encoder.DecodeAsUtf8(f.end.Data)
}).
Select(f => new {
f.file,
f.isBinary,
diff = f.isBinary ? null : diffGenerator.UnifiedDiff(f.start, f.end, 3)
}).
//
// Do not include files that were not in fact changed between revision
Where(f => f.diff == null || f.diff.Hunks.Sum(h => h.Lines.Count(l => l.Added || l.Removed )) > 0).
Select(f => GetHgRollupFileDiffInfo(new HgPath(f.file), f.isBinary, f.diff)).
ToList();
}
return new HgCompareInfo(@base, head, changesets, diffs);
}
public HgDivergenceInfo GetDivergence(HgNodeID baseNodeID, HgNodeID headNodeID)
{
var hgRevsetManager = new HgRevsetManager();
var @base = (baseNodeID == HgNodeID.Null ? null : Changelog[baseNodeID]);
var head = (headNodeID == HgNodeID.Null ? null : Changelog[headNodeID]);
var baseAncestors = @base == null ?
new HgRevset() :
hgRevsetManager.GetAncestors(this, new HgRevset(@base.Metadata));
var headAncestors = head == null ?
new HgRevset() :
hgRevsetManager.GetAncestors(this, new HgRevset(head.Metadata));
var ahead = headAncestors - baseAncestors;
var behind = baseAncestors - headAncestors;
//
// If ahead has only one commit and that one is closing branch without affecting any files, ignore it altogether
if(ahead.Count == 1)
{
var aheadChangeset = Changelog[ahead.Single().NodeID];
if(aheadChangeset.Branch.Closed && aheadChangeset.Files.Count == 0)
ahead = new HgRevset();
} // if
return new HgDivergenceInfo(ahead, head, behind, @base);
}