private void UpdateHeader()
{
var entry = _document.Lines.Any() ? _document.FindEntry(_view.SelectedLine) : null;
var emptyMarker = _viewStage ? "*nothing to commit*" : "*clean*";
var path = entry == null ? emptyMarker : entry.Changes.Path;
var mode = _viewStage ? "S" : "W";
_header.Text = $" {mode} | {path}";
}
public static string ComputePatch(PatchDocument document, IEnumerable <int> lineIndexes, PatchDirection direction)
{
var isUndo = direction == PatchDirection.Reset ||
direction == PatchDirection.Unstage;
var newPatch = new StringBuilder();
var entryLines = lineIndexes.Select(i => new { i, e = document.FindEntry(i) }).GroupBy(t => t.e, t => t.i);
foreach (var entryLine in entryLines)
{
var entry = entryLine.Key;
var hunkLines = entryLine.Select(i => new { i, h = entry.FindHunk(i) }).GroupBy(t => t.h, t => t.i);
foreach (var hunkLine in hunkLines)
{
var hunk = hunkLine.Key;
var lineSet = new HashSet <int>(hunkLine);
// Get current hunk information
var oldStart = hunk.OldStart;
var newStart = hunk.NewStart;
// Compute the new hunk size
var oldLength = 0;
for (var i = hunk.Offset; i < hunk.Offset + hunk.Length; i++)
{
var line = document.Lines[i];
var kind = line.Kind;
var wasPresent = kind == PatchLineKind.Context ||
kind == PatchLineKind.Removal && (!isUndo || lineSet.Contains(i)) ||
kind == PatchLineKind.Addition && (isUndo && !lineSet.Contains(i));
if (wasPresent)
{
oldLength++;
}
}
var delta = lineSet.Select(i => document.Lines[i])
.Select(l => l.Kind)
.Where(k => k.IsAdditionOrRemoval())
.Select(k => k == PatchLineKind.Addition ? 1 : -1)
.Sum();
var newLength = oldLength + delta;
// Add header
var changes = entry.Changes;
var oldPath = changes.OldPath.Replace(@"\", "/");
var oldExists = oldLength != 0 || changes.OldMode != Mode.Nonexistent;
var path = changes.Path.Replace(@"\", "/");
if (oldExists)
{
newPatch.AppendFormat("--- {0}\n", oldPath);
}
else
{
newPatch.AppendFormat("new file mode {0}\n", changes.Mode);
newPatch.Append("--- /dev/null\n");
}
newPatch.AppendFormat("+++ b/{0}\n", path);
// Write hunk header
newPatch.Append("@@ -");
newPatch.Append(oldStart);
if (oldLength != 1)
{
newPatch.Append(",");
newPatch.Append(oldLength);
}
newPatch.Append(" +");
newPatch.Append(newStart);
if (newLength != 1)
{
newPatch.Append(",");
newPatch.Append(newLength);
}
newPatch.Append(" @@");
newPatch.Append("\n");
// Write hunk
var previousIncluded = false;
for (var i = hunk.Offset; i < hunk.Offset + hunk.Length; i++)
{
var line = document.Lines[i];
var kind = line.Kind;
if (lineSet.Contains(i) ||
kind == PatchLineKind.Context ||
previousIncluded && kind == PatchLineKind.NoEndOfLine)
{
newPatch.Append(line.Text);
newPatch.Append("\n");
previousIncluded = true;
}
else if (!isUndo && kind == PatchLineKind.Removal ||
isUndo && kind == PatchLineKind.Addition)
{
newPatch.Append(" ");
newPatch.Append(line.Text, 1, line.Text.Length - 1);
newPatch.Append("\n");
previousIncluded = true;
}
else
{
previousIncluded = false;
}
}
}
}
return(newPatch.ToString());
}
public static string ComputePatch(PatchDocument document, IEnumerable<int> lineIndexes, PatchDirection direction)
{
var isUndo = direction == PatchDirection.Reset ||
direction == PatchDirection.Unstage;
var newPatch = new StringBuilder();
var entryLines = lineIndexes.Select(i => new {i, e = document.FindEntry(i)}).GroupBy(t => t.e, t => t.i);
foreach (var entryLine in entryLines)
{
var entry = entryLine.Key;
var hunkLines = entryLine.Select(i => new {i, h = entry.FindHunk(i)}).GroupBy(t => t.h, t => t.i);
foreach (var hunkLine in hunkLines)
{
var hunk = hunkLine.Key;
var lineSet = new HashSet<int>(hunkLine);
// Get current hunk information
var oldStart = hunk.OldStart;
var newStart = hunk.NewStart;
// Compute the new hunk size
var oldLength = 0;
for (var i = hunk.Offset; i < hunk.Offset + hunk.Length; i++)
{
var line = document.Lines[i];
var kind = line.Kind;
var wasPresent = kind == PatchLineKind.Context ||
kind == PatchLineKind.Removal && (!isUndo || lineSet.Contains(i)) ||
kind == PatchLineKind.Addition && (isUndo && !lineSet.Contains(i));
if (wasPresent)
oldLength++;
}
var delta = lineSet.Select(i => document.Lines[i])
.Select(l => l.Kind)
.Where(k => k.IsAdditionOrRemoval())
.Select(k => k == PatchLineKind.Addition ? 1 : -1)
.Sum();
var newLength = oldLength + delta;
// Add header
var changes = entry.Changes;
var oldPath = changes.OldPath.Replace(@"\", "/");
var oldExists = oldLength != 0 || changes.OldMode != Mode.Nonexistent;
var path = changes.Path.Replace(@"\", "/");
if (oldExists)
{
newPatch.AppendFormat("--- {0}\n", oldPath);
}
else
{
newPatch.AppendFormat("new file mode {0}\n", changes.Mode);
newPatch.Append("--- /dev/null\n");
}
newPatch.AppendFormat("+++ b/{0}\n", path);
// Write hunk header
newPatch.Append("@@ -");
newPatch.Append(oldStart);
if (oldLength != 1)
{
newPatch.Append(",");
newPatch.Append(oldLength);
}
newPatch.Append(" +");
newPatch.Append(newStart);
if (newLength != 1)
{
newPatch.Append(",");
newPatch.Append(newLength);
}
newPatch.Append(" @@");
newPatch.Append("\n");
// Write hunk
var previousIncluded = false;
for (var i = hunk.Offset; i < hunk.Offset + hunk.Length; i++)
{
var line = document.Lines[i];
var kind = line.Kind;
if (lineSet.Contains(i) ||
kind == PatchLineKind.Context ||
previousIncluded && kind == PatchLineKind.NoEndOfLine)
{
newPatch.Append(line.Text);
newPatch.Append("\n");
previousIncluded = true;
}
else if (!isUndo && kind == PatchLineKind.Removal ||
isUndo && kind == PatchLineKind.Addition)
{
newPatch.Append(" ");
newPatch.Append(line.Text, 1, line.Text.Length - 1);
newPatch.Append("\n");
previousIncluded = true;
}
else
{
previousIncluded = false;
}
}
}
}
return newPatch.ToString();
}