public DiffData(DIFF_STATE state, string baseDir, Win32.FIND_DATA src, Win32.FIND_DATA trg)
{
this.state = state;
this.baseDir = baseDir;
this.src = src;
this.trg = trg;
}
public static IEnumerable <Spi.Native.Win32.FIND_DATA> EntriesEx(StringBuilder FullDirname, ErrorHandler errorHandler)
{
Win32.FIND_DATA find_data = new Win32.FIND_DATA();
FullDirname.Append("\\*");
IntPtr SearchHandle = IntPtr.Zero;
try
{
SearchHandle = Win32.FindFirstFileEx(
FullDirname.ToString()
, Win32.FINDEX_INFO_LEVELS.FindExInfoBasic
, ref find_data
, Win32.FINDEX_SEARCH_OPS.FindExSearchNameMatch
, IntPtr.Zero
, Win32.FINDEX_ADDITIONAL_FLAGS.FIND_FIRST_EX_LARGE_FETCH);
FullDirname.Length -= 2;
if (SearchHandle == Win32.INVALID_HANDLE_VALUE)
{
int LastWinError = Marshal.GetLastWin32Error();
if (LastWinError == Win32.ERROR_PATH_NOT_FOUND || LastWinError == Win32.ERROR_DIRECTORY)
{
yield break;
}
else
{
errorHandler?.Invoke(LastWinError, "FindFirstFile, " + FullDirname);
}
}
else
{
do
{
if (Spi.Misc.IsDotOrDotDotDirectory(find_data.cFileName))
{
continue;
}
yield return(find_data);
}while (Win32.FindNextFile_IntPtr(SearchHandle, ref find_data));
if (Marshal.GetLastWin32Error() != Win32.ERROR_NO_MORE_FILES)
{
errorHandler?.Invoke(Marshal.GetLastWin32Error(), "FindNextFile, " + FullDirname);
}
}
}
finally
{
if (SearchHandle != IntPtr.Zero)
{
Win32.FindClose_IntPtr(SearchHandle);
}
}
}
private static bool FileAppearInMoreDirectories(Win32.FIND_DATA newFile, List <string> newDirs, Win32.FIND_DATA delFile, List <string> delDirs, TextWriter errWriter)
{
if (newDirs.Count == 1 && delDirs.Count == 1)
{
return(false);
}
WriteErrorWhenFileIsInMoreThanOneDirectory(newFile.cFileName, newDirs, "b", errWriter);
WriteErrorWhenFileIsInMoreThanOneDirectory(delFile.cFileName, delDirs, "a", errWriter);
return(true);
}
private static void WriteModifyLine(TextWriter writer, ref Win32.FIND_DATA src, ref Win32.FIND_DATA trg, string FullFilename)
{
writer.WriteLine(
"{0:X}|{1:X}"
+ "\t{2}|{3}"
+ "\t{4}|{5}"
+ "\t{6}"
, src.dwFileAttributes
, (trg.dwFileAttributes == src.dwFileAttributes ? "-" : trg.dwFileAttributes.ToString("X"))
, ConvertFiletimeToString(src.ftLastWriteTime, FullFilename, "lastWriteTime")
, CmpDirs.CmpFileTimes(src.ftLastWriteTime, trg.ftLastWriteTime) == 0 ? "-" : ConvertFiletimeToString(trg.ftLastWriteTime, FullFilename, "lastWriteTime")
, src.FileSize
, src.FileSize == trg.FileSize ? "-" : trg.FileSize.ToString()
, FullFilename
);
}
private static void WriteFindDataLine(TextWriter writer, ref Win32.FIND_DATA findData, string FullFilename)
{
uint attr = findData.dwFileAttributes;
writer.WriteLine(
"{0}{1}{2}{3}{4}\t{5:X}" // attributes (human \t machine)
+ "\t{6}\t{7}\t{8}" // create, access, modify (human)
+ "\t{9}\t{10}" // filesize, filename
, (((attr & (uint)System.IO.FileAttributes.Archive) != 0) ? 'A' : '-')
, (((attr & (uint)System.IO.FileAttributes.System) != 0) ? 'S' : '-')
, (((attr & (uint)System.IO.FileAttributes.Hidden) != 0) ? 'H' : '-')
, (((attr & (uint)System.IO.FileAttributes.ReadOnly) != 0) ? 'R' : '-')
, (((attr & (uint)System.IO.FileAttributes.Directory) != 0) ? 'D' : '-')
, attr
, ConvertFiletimeToString(findData.ftCreationTime, FullFilename, "creationTime")
, ConvertFiletimeToString(findData.ftLastAccessTime, FullFilename, "lastAccessTime")
, ConvertFiletimeToString(findData.ftLastWriteTime, FullFilename, "lastWriteTime")
, findData.FileSize
, FullFilename
);
}
public static int CompareFindData_Name_Size_Modified(Win32.FIND_DATA a, Win32.FIND_DATA b)
{
int cmp;
if ((cmp = String.Compare(a.cFileName, b.cFileName)) != 0)
{
return(cmp);
}
//if ((cmp = Misc.CompareULongsToInt(a.FileSize, b.FileSize)) != 0) return cmp;
if ((cmp = Comparer <ulong> .Default.Compare(a.FileSize, b.FileSize)) != 0)
{
return(cmp);
}
//if ((cmp = Misc.CmpFileTimes(a.ftCreationTime, b.ftCreationTime)) != 0) return cmp;
if ((cmp = Misc.CmpFileTimes(a.ftLastWriteTime, b.ftLastWriteTime)) != 0)
{
return(cmp);
}
return(0);
}
/// <summary>
/// ATTENZIONE!!!! --- DANGER-ZONE --- MULTI-THREADING AHEAD!!!
/// </summary>
public void DiffCallback(DIFF_STATE state, string basedir, ref Win32.FIND_DATA find_data_src, ref Win32.FIND_DATA find_data_trg)
{
Win32.FIND_DATA?File_Data_ToUse;
Win32.FIND_DATA?File_Data_NewDel;
TextWriter toWriteTo;
ProcessDiffState_UpdateCounters(state, ref find_data_src, ref find_data_trg,
out toWriteTo, out File_Data_ToUse, out File_Data_NewDel);
if (!_writeSameSame && state == DIFF_STATE.SAMESAME)
{
return;
}
if (toWriteTo == null)
{
return;
}
string filenameToPrint = (state == DIFF_STATE.NEW) ? find_data_src.cFileName : find_data_trg.cFileName;
string FullFilename = Path.Combine(basedir, filenameToPrint);
if (File_Data_ToUse.HasValue)
{
var findData = File_Data_ToUse.Value;
if (state == DIFF_STATE.MODIFY)
{
WriteModifyLine(toWriteTo, ref find_data_src, ref find_data_trg, FullFilename);
}
else
{
WriteFindDataLine(toWriteTo, ref findData, FullFilename);
}
}
else
{
toWriteTo.WriteLine($"{FullFilename}");
}
}
private void ProcessDiffState_UpdateCounters(DIFF_STATE state,
ref Win32.FIND_DATA find_data_src, ref Win32.FIND_DATA find_data_trg,
out TextWriter toWriteTo,
out Win32.FIND_DATA?File_Data_ToUse, out Win32.FIND_DATA?File_Data_NewDel)
{
File_Data_NewDel = null;
switch (state)
{
default:
throw new Exception($"internal error. no such writer for this kind of state. [{state.ToString()}]");
case DIFF_STATE.SAMESAME:
if (!Spi.Misc.IsDirectory(find_data_src))
{
Interlocked.Increment(ref _stats.FilesSame);
Interlocked.Add(ref _stats.FilesSameBytes, (long)find_data_src.FileSize);
toWriteTo = _writers.sameWriter;
File_Data_ToUse = find_data_src;
}
else
{
toWriteTo = null;
File_Data_ToUse = null;
}
break;
case DIFF_STATE.NEW:
if (Spi.Misc.IsDirectory(find_data_src))
{
Interlocked.Increment(ref _stats.DirsNew);
toWriteTo = _writers.newDirWriter;
File_Data_ToUse = null;
}
else
{
Interlocked.Increment(ref _stats.FilesNew);
Interlocked.Add(ref _stats.FilesNewBytes, (long)find_data_src.FileSize);
toWriteTo = _writers.newWriter;
File_Data_ToUse = find_data_src;
File_Data_NewDel = find_data_src;
}
break;
case DIFF_STATE.MODIFY:
toWriteTo = _writers.modWriter;
Interlocked.Increment(ref _stats.FilesMod);
Interlocked.Add(ref _stats.FilesModBytes, (long)find_data_trg.FileSize - (long)find_data_src.FileSize);
File_Data_ToUse = find_data_trg;
break;
case DIFF_STATE.DELETE:
if (Spi.Misc.IsDirectory(find_data_trg))
{
toWriteTo = _writers.delDirWriter;
File_Data_ToUse = null;
Interlocked.Increment(ref _stats.DirsDel);
}
else
{
toWriteTo = _writers.delWriter;
Interlocked.Increment(ref _stats.FilesDel);
Interlocked.Add(ref _stats.FilesDelBytes, (long)find_data_trg.FileSize);
File_Data_ToUse = find_data_trg;
File_Data_NewDel = find_data_trg;
}
break;
}
}
