} // proc ZipFileItem
private void GZipFileItem(CmdletNotify notify, CmdletProgress bar, Stream src, DirectoryInfo targetPath, FileIndexItem item)
{
using (var dst = new FileWrite(notify, new FileInfo(Path.Combine(targetPath.FullName, item.ArchiveName)), false, CompressMode.Auto))
{
Stuff.CopyRawBytes(bar, item.RelativePath, src.Length, src, dst.Stream);
dst.Commit();
}
} // proc GZipFileItem
} // proc ReadIndex
public void WriteIndex(CmdletNotify notify, string fileName)
{
var file = CreateIndexFileName(fileName);
// erzeuge den index nicht direkt
using (var dst = new FileWrite(notify, file, false, CompressMode.Auto))
using (var sw = new StreamWriter(dst.Stream, Encoding.Unicode))
{
var csv = new CsvWriter(sw, FileIndexItem.csvDefinition);
foreach (var cur in files.Values)
{
csv.WriteData(cur.GetLineData());
}
dst.Commit();
}
} // proc WriteIndex
protected override void ProcessRecord()
{
const string zipArchivePlaceHolder = "#";
using (var bar = Notify.CreateStatus("Erzeuge Backup", $"Sicherung von {Source}..."))
{
var totalBytes = 0L;
//var position = 0L;
var itemsModified = 0;
var itemsUnmodified = 0;
var itemsZipped = 0;
var archiveUsed = new Dictionary <string, int>(StringComparer.OrdinalIgnoreCase);
// Lade Index-Datei
bar.StatusDescription = "Lese Index...";
var targetPath = new DirectoryInfo(Target);
var targetIndex = Path.Combine(targetPath.FullName, "index.txt.gz");
var index = new FileIndex();
if (String.IsNullOrEmpty(ShadowIndex)) // Kein lokaler Index, also lade dem vom Target
{
index.ReadIndex(Notify, targetIndex);
}
else
{
index.ReadIndex(Notify, ShadowIndex);
}
// Gleiche die Daten ab und erzeuge die Statistik
bar.StatusDescription = "Vergleiche Dateien mit Index...";
var swFileStopWatch = Stopwatch.StartNew();
var files = new FileList(Notify, new DirectoryInfo(Source), Excludes);
foreach (var c in files)
{
var indexItem = index.UpdateFile(c);
var tmp = 0;
// Gib einen zwischen Bericht
if (swFileStopWatch.ElapsedMilliseconds > 500)
{
bar.StatusDescription = $"Vergleiche {c.RelativePath} mit Index...";
swFileStopWatch = Stopwatch.StartNew();
}
switch (indexItem.State)
{
case FileIndexState.Modified:
// Erzeuge den Eintrag im Index
if (c.FileInfo.Length < ZipArchiveBorder)
{
itemsZipped++;
indexItem.ArchiveName = zipArchivePlaceHolder;
}
else
{
if (String.IsNullOrEmpty(indexItem.ArchiveName))
{
indexItem.ArchiveName = Guid.NewGuid().ToString("N") + Path.GetExtension(indexItem.RelativePath) + (ZipFile(indexItem.RelativePath) ? ".gz" : ".nopack");
}
}
// Statistik für den Progress
totalBytes += c.FileInfo.Length;
itemsModified++;
// Erhöhe den Zugriff
if (archiveUsed.TryGetValue(indexItem.ArchiveName, out tmp))
{
archiveUsed[indexItem.ArchiveName] = tmp + 1;
}
break;
case FileIndexState.Unmodified:
// Prüfe die existens den Archives
if (Force || (String.IsNullOrEmpty(ShadowIndex) && !File.Exists(Path.Combine(targetPath.FullName, indexItem.ArchiveName))))
{
indexItem.Update(c.FileInfo);
goto case FileIndexState.Modified;
}
itemsUnmodified++;
// Erhöhe den Zugriff
if (archiveUsed.TryGetValue(indexItem.ArchiveName, out tmp))
{
archiveUsed[indexItem.ArchiveName] = tmp + 1;
}
break;
case FileIndexState.None:
if (archiveUsed.ContainsKey(indexItem.ArchiveName))
{
archiveUsed[indexItem.ArchiveName] = 0;
}
break;
}
}
// Schreibe das neue Archiv
if (itemsModified > 0)
{
string currentArchiveName = null;
FileWrite zipStream = null;
ZipOutputStream zip = null;
try
{
bar.StartRemaining();
bar.Maximum = totalBytes;
var removeItems = new List <FileIndexItem>();
foreach (var c in index)
{
switch (c.State)
{
case FileIndexState.Modified: // Kopiere die Datei
using (var src = Stuff.OpenRead(new FileInfo(Path.Combine(Source, c.RelativePath)), Notify, allowEmpty: true))
{
if (c.ArchiveName == zipArchivePlaceHolder)
{
// Schließe das Archiv, wenn genug Inhalt
if (zipStream != null && zipStream.Stream.Position > 512 << 20)
{
zipStream.Commit();
CloseZipStream(zipStream, zip);
currentArchiveName = null;
}
// Erzeuge das Archiv
if (currentArchiveName == null)
{
currentArchiveName = Guid.NewGuid().ToString("N") + ".zip";
CreateZipStream(targetPath, currentArchiveName, out zipStream, out zip);
}
// Kopiere die Daten
ZipFileItem(Notify, bar, src, zip, c);
c.ArchiveName = currentArchiveName;
}
else
{
GZipFileItem(Notify, bar, src, targetPath, c);
}
}
break;
case FileIndexState.None: // Lösche den Index
removeItems.Remove(c);
break;
}
}
// Entferne die Einträge aus dem Index
foreach (var c in removeItems)
{
index.RemoveEntry(c);
}
if (zipStream != null)
{
zipStream.Commit();
}
}
finally
{
CloseZipStream(zipStream, zip);
}
// Schreibe den Index
bar.StopRemaining();
bar.StatusDescription = "Schreibe Index...";
if (!String.IsNullOrEmpty(ShadowIndex))
{
index.WriteIndex(Notify, ShadowIndex);
}
index.WriteIndex(Notify, targetIndex);
// Lösche ungenutzte Archive
if (String.IsNullOrEmpty(ShadowIndex))
{
foreach (var c in archiveUsed)
{
if (c.Value == 0)
{
var file = new FileInfo(Path.Combine(targetPath.FullName, c.Key));
bar.StatusDescription = $"Nicht mehr benötigtes Archiv '{c.Key}'...";
Notify.SafeIO(file.Delete, bar.StatusDescription);
}
}
}
else // Erzeuge nur eine Löschdatei
{
bar.StatusDescription = "Nicht mehr benötigte Archive werden gelöscht...";
using (var sw = new StreamWriter(Stuff.OpenWrite(new FileInfo(Path.Combine(targetPath.FullName, "index_rm.txt")), Notify, CompressMode.Stored)))
{
sw.BaseStream.Position = sw.BaseStream.Length;
foreach (var c in archiveUsed)
{
if (c.Value == 0)
{
sw.WriteLine(c.Key);
}
}
}
}
}
}
} // proc ProcessRecord
} // proc ZipFileItem
private void GZipFileItem(CmdletNotify notify, CmdletProgress bar, Stream src, DirectoryInfo targetPath, FileIndexItem item)
{
using (var dst = new FileWrite(notify, new FileInfo(Path.Combine(targetPath.FullName, item.ArchiveName)), false, CompressMode.Auto))
{
Stuff.CopyRawBytes(bar, item.RelativePath, src.Length, src, dst.Stream);
dst.Commit();
}
} // proc GZipFileItem