private static void AddNewBranches(Commit commit, GraphEntry entry)
{
var branchIndex = entry.Lines.Max(l => l.BranchIndex) + 1;
foreach (var parent in commit.Parents.Skip(1))
{
var matchingLine = entry.Lines.FirstOrDefault(e => e.ParentId == parent.Id);
int currentBranchIndex, endIndex;
if (matchingLine != null)
{
currentBranchIndex = matchingLine.BranchIndex;
endIndex = matchingLine.EndIndex;
}
else
{
currentBranchIndex = branchIndex;
endIndex = entry.Lines.Select(l => l.EndIndex).Distinct().Count();
branchIndex += 1;
}
entry.Lines.Add(new GraphLine()
{
ParentId = parent.Id,
BranchIndex = currentBranchIndex,
Color = GetBranchColor(currentBranchIndex),
StartsFromThisRevision = true,
StartIndex = entry.RevisionIndex,
EndIndex = endIndex
});
}
}
private static void ContinuePreviousLines(GraphEntry previous, Commit commit, GraphEntry entry)
{
bool commitIndexSet = false;
var linesToContinue = GetLinesToContinue(previous);
for (int index = 0; index < linesToContinue.Count; index++)
{
var line = linesToContinue[index];
if (line.ParentId == entry.RevisionId)
{
if (!commitIndexSet)
{
entry.RevisionIndex = index;
entry.RevisionColor = line.Color;
commitIndexSet = true;
}
entry.Lines.Add(new GraphLine()
{
BranchIndex = line.BranchIndex,
ParentId = commit.Parents.FirstOrDefault()?.Id,
Color = line.Color,
StartIndex = index,
EndIndex = entry.RevisionIndex,
EndsInThisRevision = index != entry.RevisionIndex || !commit.Parents.Any()
});
}
else
{
entry.Lines.Add(new GraphLine()
{
BranchIndex = line.BranchIndex,
ParentId = line.ParentId,
Color = line.Color,
StartIndex = index,
EndIndex = entry.Lines.Count(l => !l.EndsInThisRevision)
});
}
}
if (!commitIndexSet)
{
var newTipIndex = entry.Lines.Count(l => !l.EndsInThisRevision);
entry.RevisionIndex = newTipIndex;
entry.RevisionColor = GetBranchColor(newTipIndex);
entry.Lines.Add(new GraphLine()
{
BranchIndex = newTipIndex,
StartIndex = newTipIndex,
EndIndex = newTipIndex,
StartsFromThisRevision = true,
Color = entry.RevisionColor,
ParentId = commit.Parents.FirstOrDefault()?.Id
});
}
}
public static GraphEntry FromCommit(GraphEntry previous, Commit commit)
{
if (previous == null) {
return CreateFirstEntry(commit);
}
return CreateEntryFromCommit(previous, commit);
}
private static List <GraphLine> GetLinesToContinue(GraphEntry previous)
{
return(previous.Lines
.Where(l => !l.EndsInThisRevision)
.GroupBy(l => l.EndIndex)
.Select(g => g.First())
.ToList());
}
public static GraphEntry FromCommit(GraphEntry previous, Commit commit)
{
if (previous == null)
{
return(CreateFirstEntry(commit));
}
return(CreateEntryFromCommit(previous, commit));
}
private static GraphEntry CreateEntryFromCommit(GraphEntry previous, Commit commit)
{
var entry = new GraphEntry()
{
RevisionId = commit.Id
};
ContinuePreviousLines(previous, commit, entry);
AddNewBranches(commit, entry);
return(entry);
}
private static GraphEntry CreateFirstEntry(Commit commit)
{
var entry = new GraphEntry {
RevisionId = commit.Id,
RevisionIndex = 0,
RevisionColor = GetBranchColor(0),
Lines =
{
new GraphLine()
{
ParentId = commit.Parents.FirstOrDefault()?.Id,
Color = GetBranchColor(0),
BranchIndex = 0,
StartsFromThisRevision = true,
StartIndex = 0,
EndIndex = 0
}
}
};
AddNewBranches(commit, entry);
return(entry);
}
private static void AddNewBranches(Commit commit, GraphEntry entry)
{
var branchIndex = entry.Lines.Max(l => l.BranchIndex) + 1;
foreach (var parent in commit.Parents.Skip(1)) {
var matchingLine = entry.Lines.FirstOrDefault(e => e.ParentId == parent.Id);
int currentBranchIndex, endIndex;
if (matchingLine != null) {
currentBranchIndex = matchingLine.BranchIndex;
endIndex = matchingLine.EndIndex;
} else {
currentBranchIndex = branchIndex;
endIndex = entry.Lines.Select(l => l.EndIndex).Distinct().Count();
branchIndex += 1;
}
entry.Lines.Add(new GraphLine() {
ParentId = parent.Id,
BranchIndex = currentBranchIndex,
Color = GetBranchColor(currentBranchIndex),
StartsFromThisRevision = true,
StartIndex = entry.RevisionIndex,
EndIndex = endIndex
});
}
}
private static List<GraphLine> GetLinesToContinue(GraphEntry previous)
{
return previous.Lines
.Where(l => !l.EndsInThisRevision)
.GroupBy(l => l.EndIndex)
.Select(g => g.First())
.ToList();
}
private static GraphEntry CreateFirstEntry(Commit commit)
{
var entry = new GraphEntry {
RevisionId = commit.Id,
RevisionIndex = 0,
RevisionColor = GetBranchColor(0),
Lines = {
new GraphLine() {
ParentId = commit.Parents.FirstOrDefault()?.Id,
Color = GetBranchColor(0),
BranchIndex = 0,
StartsFromThisRevision = true,
StartIndex = 0,
EndIndex = 0
}
}
};
AddNewBranches(commit, entry);
return entry;
}
private static GraphEntry CreateEntryFromCommit(GraphEntry previous, Commit commit)
{
var entry = new GraphEntry() {
RevisionId = commit.Id
};
ContinuePreviousLines(previous, commit, entry);
AddNewBranches(commit, entry);
return entry;
}
private static void ContinuePreviousLines(GraphEntry previous, Commit commit, GraphEntry entry)
{
bool commitIndexSet = false;
var linesToContinue = GetLinesToContinue(previous);
for (int index = 0; index < linesToContinue.Count; index++) {
var line = linesToContinue[index];
if (line.ParentId == entry.RevisionId) {
if (!commitIndexSet) {
entry.RevisionIndex = index;
entry.RevisionColor = line.Color;
commitIndexSet = true;
}
entry.Lines.Add(new GraphLine() {
BranchIndex = line.BranchIndex,
ParentId = commit.Parents.FirstOrDefault()?.Id,
Color = line.Color,
StartIndex = index,
EndIndex = entry.RevisionIndex,
EndsInThisRevision = index != entry.RevisionIndex || !commit.Parents.Any()
});
} else {
entry.Lines.Add(new GraphLine() {
BranchIndex = line.BranchIndex,
ParentId = line.ParentId,
Color = line.Color,
StartIndex = index,
EndIndex = entry.Lines.Count(l => !l.EndsInThisRevision)
});
}
}
if (!commitIndexSet) {
var newTipIndex = entry.Lines.Count(l => !l.EndsInThisRevision);
entry.RevisionIndex = newTipIndex;
entry.RevisionColor = GetBranchColor(newTipIndex);
entry.Lines.Add(new GraphLine() {
BranchIndex = newTipIndex,
StartIndex = newTipIndex,
EndIndex = newTipIndex,
StartsFromThisRevision = true,
Color = entry.RevisionColor,
ParentId = commit.Parents.FirstOrDefault()?.Id
});
}
}