public void Go()
{
while (_queue.Any())
lock (this)
{
if (!_queue.Any()) continue;
var current = _queue.First();
if (!current.Key.Directory.Exists)
{
CreateDirectoryTree(current.Value.Source.Directory, current.Key.Directory);
}
using (Stream src = current.Value.Source.OpenRead())
{
if (src.Length <= 0)
{
// Diff/New file is empty, skip it.
_queue.Remove(current.Key);
continue;
}
if (current.Key.Exists) // trying to merge/apply data diff
if (Diff.IsBinary(src) || _copyAsBinary) // binary blobs are copied whole
using (Stream dest = current.Key.Open(FileMode.Truncate, FileAccess.ReadWrite))
src.CopyTo(dest);
else
using (Stream dest = current.Key.Open(FileMode.Open, FileAccess.ReadWrite))
{
var srcBytes = src.toArray();
Patch P = new Patch();
if (P.ParseHunks(srcBytes) == 0)
{
// No diff hunks in the file.
// Diff file not a diff, and not empty. Handle it as a binary file overwrite.
dest.SetLength(0);
src.CopyTo(dest);
_queue.Remove(current.Key);
continue;
}
var newBytes = P.SimpleApply(dest.toArray());
// Replace this call with a more sophisticated (read "intellegent") diff application method.
dest.Position = 0;
dest.Write(newBytes, 0, newBytes.Length);
dest.SetLength(newBytes.Length);
/*
MergeResult mr = current.Value.Base == null
? MergeAlgorithm.merge(new RawText(dest.toArray()),
new RawText(src.toArray()),
new RawText(dest.toArray())) // use the base as "theirs"
: MergeAlgorithm.merge(new RawText(dest.toArray()),
new RawText(src.toArray()),
new RawText(
current.Value.Base.OpenRead()
.toArray()));
bool conflicts = mr.containsConflicts();
bool blurb = conflicts;
*/
}
else
using (var dest = current.Key.Create())
if (current.Value.Base == null || !current.Value.Base.Exists || Diff.IsBinary(src) ||
_copyAsBinary)
src.CopyTo(dest);
else
{
byte[] baseBytes = current.Value.Base.OpenRead().toArray();
byte[] srcBytes = src.toArray();
// string baseStr = baseBytes.Aggregate(String.Empty, (current1, b) => current1 + (char) b);
// string srcStr = srcBytes.Aggregate(String.Empty, (current1, b) => current1 + (char)b);
var diff = new Diff(baseBytes, srcBytes);
if (diff.HasDifferences)
{
var df = new DiffFormatter();
df.FormatEdits(dest, new RawText(baseBytes), new RawText(srcBytes),
diff.GetEdits());
/*
Stream diffStream = new MemoryStream();
df.FormatEdits(diffStream, new RawText(baseBytes), new RawText(srcBytes), diff.GetEdits());
var fh = new CombinedFileHeader(Patch.ReadFully(diffStream), 0);
var outStr = fh.getScriptText();
byte[] bytes = outStr.Cast<byte>().ToArray();
dest.Write(bytes, 0, bytes.Length);
*/
}
else // Not really different, just different metadata. skip it.
{
dest.Close();
current.Key.Delete();
_queue.Remove(current.Key);
continue;
}
}
}
// set the attributes and file timestamps (and ACLs if it's ntfs...)
current.Key.Attributes = current.Value.Source.Attributes;
if (current.Key.FileSystem is NtfsFileSystem)
{
var D = (NtfsFileSystem) current.Key.FileSystem;
var S = (NtfsFileSystem) current.Value.Source.FileSystem;
D.SetSecurity(current.Key.FullName, S.GetSecurity(current.Value.Source.FullName));
D.SetFileStandardInformation(current.Key.FullName,
S.GetFileStandardInformation(current.Value.Source.FullName));
}
else
{
current.Key.CreationTimeUtc = current.Value.Source.CreationTimeUtc;
current.Key.LastWriteTimeUtc = current.Value.Source.LastWriteTimeUtc;
current.Key.LastAccessTimeUtc = current.Value.Source.LastAccessTimeUtc;
}
_queue.Remove(current.Key);
}
}
internal virtual int parseBody(Patch script, int end)
{
byte[] buf = Buffer;
int c = RawParseUtils.nextLF(buf, _startOffset), last = c;
OldLinesDeleted = 0;
OldLinesAdded = 0;
for (; c < end; last = c, c = RawParseUtils.nextLF(buf, c))
{
bool breakScan;
switch (buf[c])
{
case (byte)' ':
case (byte)'\n':
LinesContext++;
continue;
case (byte)'-':
OldLinesDeleted++;
continue;
case (byte)'+':
OldLinesAdded++;
continue;
case (byte)'\\': // Matches "\ No newline at end of file"
continue;
default:
breakScan = true;
break;
}
if (breakScan)
{
break;
}
}
if (last < end && LinesContext + OldLinesDeleted - 1 == OldLineCount
&& LinesContext + OldLinesAdded == NewLineCount
&& RawParseUtils.match(buf, last, Patch.SigFooter) >= 0)
{
// This is an extremely common occurrence of "corruption".
// Users add footers with their signatures After this mark,
// and git diff adds the git executable version number.
// Let it slide; the hunk otherwise looked sound.
//
OldLinesDeleted--;
return last;
}
if (LinesContext + OldLinesDeleted < OldLineCount)
{
int missingCount = OldLineCount - (LinesContext + OldLinesDeleted);
//script.error(buf, _startOffset, "Truncated hunk, at least " + missingCount + " old lines is missing");
throw new FormatException(String.Format("Truncated hunk, at least {0} old line(s) missing. Hunk start @ {1}. Hunk:\n{2}",missingCount, _startOffset, buf));
}
else if (LinesContext + OldLinesAdded < NewLineCount)
{
int missingCount = NewLineCount - (LinesContext + OldLinesAdded);
//script.error(buf, _startOffset, "Truncated hunk, at least " + missingCount + " new lines is missing");
throw new FormatException(String.Format("Truncated hunk, at least {0} new line(s) missing. Hunk start @ {1}. Hunk:\n{2}", missingCount, _startOffset, buf));
}
else if (LinesContext + OldLinesDeleted > OldLineCount
|| LinesContext + OldLinesAdded > NewLineCount)
{
string oldcnt = OldLineCount + ":" + NewLineCount;
string newcnt = (LinesContext + OldLinesDeleted) + ":"
+ (LinesContext + OldLinesAdded);
//script.warn(buf, _startOffset, "Hunk header " + oldcnt + " does not match body line count of " + newcnt);
throw new FormatException(String.Format("Hunk header {0} does not match body line count of {1}. Hunk start @ {1}. Hunk:\n{2}" + oldcnt, newcnt, _startOffset, buf));
}
return c;
}
