public void Bind(ArchiveReader.Stats stats)
{
onTick = delegate {
this.Text = stats.Title;
progressBar1.Value = Math.Max(0, Math.Min(100, (int)(stats.Progress * 100)));
textStatus.Text = stats.Status;
TimeSpan time = (stats.EndTime ?? DateTime.Now) - stats.StartTime;
TimeSpan writeTime = (stats.EndTime ?? DateTime.Now) - (stats.WriteStartTime ?? DateTime.Now);
long writeSpeed = (int)writeTime.TotalSeconds == 0 ? 0 : stats.TotalWritten / (int)writeTime.TotalSeconds;
labelL1.Text = "Total processed:"; textL1.Text = FormatSize(stats.TotalWritten + stats.Unmodified);
labelL2.Text = "Elapsed time:"; textL2.Text = string.Format("{0}:{1:D2}:{2:D2}", time.Hours, time.Minutes, time.Seconds);
labelL3.Text = "Average speed:"; textL3.Text = writeSpeed == 0 ? "-" : (FormatSize(writeSpeed) + "/s");
labelL4.Text = ""; textL4.Text = "";
labelR1.Text = "Unmodified:"; textR1.Text = FormatSize(stats.Unmodified, stats.Unmodified + stats.ReadFromArchiveCompressed + stats.ReadFromWorkingCopy);
labelR2.Text = "Read from archive:"; textR2.Text = FormatSize(stats.ReadFromArchiveCompressed, stats.Unmodified + stats.ReadFromArchiveCompressed + stats.ReadFromWorkingCopy);
labelR3.Text = "Read from working copy:"; textR3.Text = FormatSize(stats.ReadFromWorkingCopy, stats.Unmodified + stats.ReadFromArchiveCompressed + stats.ReadFromWorkingCopy);
labelR4.Text = ""; textR4.Text = "";
buttonCancel.Enabled = (stats.EndTime == null);
};
onCancel = delegate {
stats.Canceled = true;
stats.EndTime = DateTime.Now;
};
}
public static bool Extract(string archiveFilename, string destination, Stats stats)
{
stats.Title = Path.GetFileName(archiveFilename);
ArchiveReader archive = new ArchiveReader(archiveFilename, stats);
bool writeEnabled = (destination != null);
Dictionary<string, ZipFile> openZips = new Dictionary<string, ZipFile>();
openZips[archive.ArchiveName.ToLowerInvariant()] = archive.zipFile;
FileStream openFile = null;
IAsyncResult openFileRead = null;
string openFilePathLC = null;
long totalSize = 0;
long totalSizeDone = 0;
// Setup cache
Dictionary<string, ExtractedData> dataCache = new Dictionary<string, ExtractedData>();
int time = 0;
foreach (File file in archive.files) {
totalSize += file.Size;
foreach (int hashIndex in file.HashIndices) {
if (stats.Canceled) return false;
string path = archive.GetString(archive.hashes[hashIndex].Path).ToLowerInvariant();
if (!dataCache.ContainsKey(path)) dataCache.Add(path, new ExtractedData());
dataCache[path].Refs.Add(time++);
}
}
string stateFile = writeEnabled ? Path.Combine(destination, Settings.StateFile) : null;
stats.Status = "Loading working copy state";
WorkingCopy workingCopy = writeEnabled ? WorkingCopy.Load(stateFile) : new WorkingCopy();
WorkingCopy newWorkingFiles = new WorkingCopy();
List<WorkingHash> oldWorkingHashes = new List<WorkingHash>();
if (writeEnabled) {
int oldCount = workingCopy.Count;
workingCopy = WorkingCopy.HashLocalFiles(destination, stats, workingCopy);
if (workingCopy.Count > oldCount) {
stats.Status = "Saving working copy state";
workingCopy.Save(stateFile);
}
}
foreach(WorkingFile wf in workingCopy.GetAll()) {
foreach(WorkingHash wh in wf.Hashes) {
wh.File = wf;
}
oldWorkingHashes.AddRange(wf.Hashes);
}
oldWorkingHashes.Sort();
if (stats.Canceled) return false;
string tmpPath = null;
if (writeEnabled) {
tmpPath = Path.Combine(destination, Settings.TmpDirectory);
Directory.CreateDirectory(tmpPath);
}
Dictionary<ExtractedData, bool> loaded = new Dictionary<ExtractedData, bool>();
float waitingForDecompression = 0.0f;
float mbUnloadedDueToMemoryPressure = 0.0f;
stats.Status = writeEnabled ? "Extracting" : "Verifying";
stats.WriteStartTime = DateTime.Now;
foreach (File file in archive.files) {
string tmpFileName = null;
FileStream outFile = null;
if (writeEnabled) {
// Quickpath - see if the file exists and has correct content
WorkingFile workingFile = workingCopy.Find(Path.Combine(destination, file.Name));
if (workingFile != null && workingFile.ExistsOnDisk() && !workingFile.IsModifiedOnDisk()) {
if (new Hash(workingFile.Hash).CompareTo(new Hash(file.Hash)) == 0) {
// The file is already there - no need to extract it
stats.Status = "Skipped " + file.Name;
workingFile.UserModified = false;
newWorkingFiles.Add(workingFile);
stats.Unmodified += file.Size;
totalSizeDone += file.Size;
continue;
}
}
int tmpFileNamePostfix = 0;
do {
tmpFileName = Path.Combine(tmpPath, file.Name + (tmpFileNamePostfix == 0 ? string.Empty : ("-" + tmpFileNamePostfix.ToString())));
tmpFileNamePostfix++;
} while (System.IO.File.Exists(tmpFileName));
Directory.CreateDirectory(Path.GetDirectoryName(tmpFileName));
outFile = new FileStream(tmpFileName, FileMode.CreateNew, FileAccess.Write);
// Avoid fragmentation
outFile.SetLength(file.Size);
outFile.Position = 0;
}
List<WorkingHash> workingHashes = new List<WorkingHash>();
try {
stats.Progress = 0;
stats.Status = (writeEnabled ? "Extracting " : "Verifying ") + file.Name;
SHA1CryptoServiceProvider sha1Provider = new SHA1CryptoServiceProvider();
Queue<MemoryStreamRef> writeQueue = new Queue<MemoryStreamRef>();
int p = 0;
for (int i = 0; i < file.HashIndices.Count; i++) {
if (stats.Canceled) {
stats.Status = "Canceled. No files were modified.";
return false;
}
// Prefetch
for (; p < file.HashIndices.Count; p++) {
if (writeQueue.Count > 0 && writeQueue.Peek().Ready.WaitOne(TimeSpan.Zero)) break; // Some data is ready - go process it
int prefetchSize = 0;
Dictionary<MemoryStream, bool> prefetchedStreams = new Dictionary<MemoryStream, bool>();
foreach(MemoryStreamRef memStreamRef in writeQueue) {
prefetchedStreams[memStreamRef.MemStream] = true;
}
foreach(MemoryStream prefetchedStream in prefetchedStreams.Keys) {
prefetchSize += (int)prefetchedStream.Length;
}
if (writeQueue.Count > 0 && prefetchSize > Settings.WritePrefetchSize) break; // We have prefetched enough data
HashSource hashSrc = archive.hashes[file.HashIndices[p]];
string path = archive.GetString(hashSrc.Path).ToLowerInvariant();
ExtractedData data = dataCache[path];
// See if we have the hash on disk. Try our best not to seek too much
WorkingHash onDiskHash = null;
long bestSeekDistance = long.MaxValue;
int idx = oldWorkingHashes.BinarySearch(new WorkingHash() { Hash = hashSrc.Hash });
if (idx >= 0) {
while (idx - 1 >= 0 && oldWorkingHashes[idx - 1].Hash.Equals(hashSrc.Hash)) idx--;
for (; idx < oldWorkingHashes.Count && oldWorkingHashes[idx].Hash.Equals(hashSrc.Hash); idx++) {
WorkingHash wh = oldWorkingHashes[idx];
long seekDistance;
if (openFile != null && openFilePathLC == wh.File.NameLowercase) {
seekDistance = Math.Abs(openFile.Position - wh.Offset);
} else {
seekDistance = long.MaxValue;
}
if (onDiskHash == null || seekDistance < bestSeekDistance) {
onDiskHash = wh;
bestSeekDistance = seekDistance;
}
}
}
if (onDiskHash != null && ((openFilePathLC == onDiskHash.File.NameLowercase) || (onDiskHash.File.ExistsOnDisk() && !onDiskHash.File.IsModifiedOnDisk()))) {
MemoryStream memStream = new MemoryStream(onDiskHash.Length);
memStream.SetLength(onDiskHash.Length);
// Finish the last read
if (openFileRead != null) {
openFile.EndRead(openFileRead);
openFileRead = null;
}
// Open other file
if (openFilePathLC != onDiskHash.File.NameLowercase) {
if (openFile != null) openFile.Close();
openFile = new FileStream(onDiskHash.File.NameLowercase, FileMode.Open, FileAccess.Read, FileShare.Read, Settings.FileStreamBufferSize, FileOptions.None);
openFilePathLC = onDiskHash.File.NameLowercase;
System.Diagnostics.Debug.Write(Path.GetFileName(onDiskHash.File.NameMixedcase));
}
System.Diagnostics.Debug.Write(onDiskHash.Offset == openFile.Position ? "." : "S");
if (openFile.Position != onDiskHash.Offset)
openFile.Position = onDiskHash.Offset;
openFileRead = openFile.BeginRead(memStream.GetBuffer(), 0, (int)memStream.Length, null, null);
writeQueue.Enqueue(new MemoryStreamRef() {
Ready = openFileRead.AsyncWaitHandle,
MemStream = memStream,
Offset = 0,
Length = (int)memStream.Length,
CacheLine = null,
Hash = hashSrc.Hash
});
stats.ReadFromWorkingCopy += hashSrc.Length;
} else {
// Locate and load the zipentry
ZipEntry pZipEntry;
path = path.Replace("\\", "/");
if (path.StartsWith("/")) {
pZipEntry = archive.zipFile[path.Substring(1)];
} else {
int slashIndex = path.IndexOf("/");
string zipPath = path.Substring(0, slashIndex);
string entryPath = path.Substring(slashIndex + 1);
if (!openZips.ContainsKey(zipPath)) openZips[zipPath] = new ZipFile(Path.Combine(Path.GetDirectoryName(archiveFilename), zipPath));
pZipEntry = openZips[zipPath][entryPath];
}
if (data.Data == null) {
stats.ReadFromArchiveDecompressed += pZipEntry.UncompressedSize;
stats.ReadFromArchiveCompressed += pZipEntry.CompressedSize;
data.AsycDecompress(pZipEntry);
}
loaded[data] = true;
writeQueue.Enqueue(new MemoryStreamRef() {
Ready = data.LoadDone,
MemStream = data.Data,
Offset = hashSrc.Offset,
Length = hashSrc.Length,
CacheLine = data,
Hash = hashSrc.Hash
});
}
}
MemoryStreamRef writeItem = writeQueue.Dequeue();
while (writeItem.Ready.WaitOne(TimeSpan.FromSeconds(0.01)) == false) {
waitingForDecompression += 0.01f;
}
// Write output
if (writeEnabled) {
workingHashes.Add(new WorkingHash() {
Hash = writeItem.Hash,
Offset = outFile.Position,
Length = writeItem.Length
});
outFile.Write(writeItem.MemStream.GetBuffer(), (int)writeItem.Offset, writeItem.Length);
}
// Verify SHA1
sha1Provider.TransformBlock(writeItem.MemStream.GetBuffer(), (int)writeItem.Offset, writeItem.Length, writeItem.MemStream.GetBuffer(), (int)writeItem.Offset);
stats.TotalWritten += writeItem.Length;
totalSizeDone += writeItem.Length;
stats.Title = string.Format("{0:F0}% {1}", 100 * (float)totalSizeDone / (float)totalSize , Path.GetFileName(archiveFilename));
stats.Progress = (float)i / (float)file.HashIndices.Count;
// Unload if it is not needed anymore
if (writeItem.CacheLine != null) {
writeItem.CacheLine.Refs.RemoveAt(0);
if (writeItem.CacheLine.Refs.Count == 0) {
StreamPool.Release(ref writeItem.CacheLine.Data);
writeItem.CacheLine.LoadDone = null;
loaded.Remove(writeItem.CacheLine);
}
}
// Unload some data if we are running out of memory
while (loaded.Count * Settings.MaxZipEntrySize > Settings.WriteCacheSize) {
ExtractedData maxRef = null;
foreach (ExtractedData ed in loaded.Keys) {
if (maxRef == null || ed.Refs[0] > maxRef.Refs[0]) maxRef = ed;
}
maxRef.LoadDone.WaitOne();
// Check that we are not evicting something from the write queue
bool inQueue = false;
foreach(MemoryStreamRef memRef in writeQueue) {
if (memRef.CacheLine == maxRef) inQueue = true;
}
if (inQueue) break;
mbUnloadedDueToMemoryPressure += (float)maxRef.Data.Length / 1024 / 1024;
StreamPool.Release(ref maxRef.Data);
maxRef.LoadDone = null;
loaded.Remove(maxRef);
}
}
stats.Progress = 0;
sha1Provider.TransformFinalBlock(new byte[0], 0, 0);
byte[] sha1 = sha1Provider.Hash;
if (new Hash(sha1).CompareTo(new Hash(file.Hash)) != 0) {
MessageBox.Show("The checksum of " + file.Name + " does not match original value. The file is corrupted.", "Critical error", MessageBoxButtons.OK, MessageBoxIcon.Error);
if (writeEnabled) {
stats.Status = "Extraction failed. Checksum mismatch.";
} else {
stats.Status = "Verification failed. Checksum mismatch.";
}
return false;
}
} finally {
if (outFile != null) outFile.Close();
}
if (writeEnabled) {
FileInfo fileInfo = new FileInfo(tmpFileName);
WorkingFile workingFile = new WorkingFile() {
NameMixedcase = Path.Combine(destination, file.Name),
Size = fileInfo.Length,
Created = fileInfo.CreationTime,
Modified = fileInfo.LastWriteTime,
Hash = file.Hash,
TempFileName = tmpFileName,
Hashes = workingHashes
};
newWorkingFiles.Add(workingFile);
}
}
stats.Progress = 0;
stats.Title = string.Format("100% {0}", Path.GetFileName(archiveFilename));
// Close sources
foreach (ZipFile zip in openZips.Values) {
zip.Dispose();
}
if (openFileRead != null) openFile.EndRead(openFileRead);
if (openFile != null) openFile.Close();
// Replace the old working copy with new one
if (writeEnabled) {
List<string> deleteFilesLC = new List<string>();
List<string> deleteFilesAskLC = new List<string>();
List<string> keepFilesLC = new List<string>();
stats.Status = "Preparing to move files";
// Delete all non-user-modified files
foreach (WorkingFile workingFile in workingCopy.GetAll()) {
if (!workingFile.UserModified && workingFile.ExistsOnDisk() && !workingFile.IsModifiedOnDisk()) {
WorkingFile newWF = newWorkingFiles.Find(workingFile.NameLowercase);
// Do not delete if it is was skipped 'fast-path' file
if (newWF != null && newWF.TempFileName == null) continue;
deleteFilesLC.Add(workingFile.NameLowercase);
}
}
// Find obstructions for new files
foreach (WorkingFile newWorkingFile in newWorkingFiles.GetAll()) {
if (newWorkingFile.TempFileName != null && newWorkingFile.ExistsOnDisk() && !deleteFilesLC.Contains(newWorkingFile.NameLowercase)) {
deleteFilesAskLC.Add(newWorkingFile.NameLowercase);
}
}
// Ask the user for permission to delete
StringBuilder sb = new StringBuilder();
sb.AppendLine("Do you want to override local changes in the following files?");
int numLines = 0;
foreach (string deleteFileAskLC in deleteFilesAskLC) {
sb.AppendLine(deleteFileAskLC);
numLines++;
if (numLines > 30) {
sb.AppendLine("...");
sb.AppendLine("(" + deleteFilesAskLC.Count + " files in total)");
break;
}
}
if (deleteFilesAskLC.Count > 0) {
DialogResult overrideAnswer = Settings.AlwaysOverwrite ? DialogResult.Yes : MessageBox.Show(sb.ToString(), "Override files", MessageBoxButtons.YesNoCancel);
if (overrideAnswer == DialogResult.Cancel) {
stats.Status = "Canceled. No files were modified.";
return false;
}
if (overrideAnswer == DialogResult.Yes) {
deleteFilesLC.AddRange(deleteFilesAskLC);
} else {
keepFilesLC = deleteFilesAskLC;
}
deleteFilesAskLC.Clear();
}
// Delete files
foreach (string deleteFileLC in deleteFilesLC) {
stats.Status = "Deleting " + Path.GetFileName(deleteFileLC);
while (true) {
try {
FileInfo fileInfo = new FileInfo(deleteFileLC);
if (fileInfo.IsReadOnly) {
fileInfo.IsReadOnly = false;
}
System.IO.File.Delete(deleteFileLC);
workingCopy.Remove(deleteFileLC);
break;
} catch (Exception e) {
DialogResult deleteAnswer = MessageBox.Show("Can not delete file " + deleteFileLC + Environment.NewLine + e.Message, "Error", MessageBoxButtons.AbortRetryIgnore);
if (deleteAnswer == DialogResult.Retry) continue;
if (deleteAnswer == DialogResult.Ignore) break;
if (deleteAnswer == DialogResult.Abort) {
stats.Status = "Canceled. Some files were deleted.";
return false;
}
}
}
}
// Move the new files
foreach (WorkingFile newWorkingFile in newWorkingFiles.GetAll()) {
if (!keepFilesLC.Contains(newWorkingFile.NameLowercase) && newWorkingFile.TempFileName != null) {
stats.Status = "Moving " + Path.GetFileName(newWorkingFile.NameMixedcase);
while (true) {
try {
Directory.CreateDirectory(Path.GetDirectoryName(newWorkingFile.NameMixedcase));
System.IO.File.Move(newWorkingFile.TempFileName, newWorkingFile.NameMixedcase);
workingCopy.Add(newWorkingFile);
break;
} catch (Exception e) {
DialogResult moveAnswer = MessageBox.Show("Error when moving " + newWorkingFile.TempFileName + Environment.NewLine + e.Message, "Error", MessageBoxButtons.AbortRetryIgnore);
if (moveAnswer == DialogResult.Retry) continue;
if (moveAnswer == DialogResult.Ignore) break;
if (moveAnswer == DialogResult.Abort) {
stats.Status = "Canceled. Some files were deleted or overridden.";
return false;
}
}
}
}
}
stats.Status = "Saving working copy state";
workingCopy.Save(stateFile);
stats.Status = "Deleting temporary directory";
try {
if (Directory.Exists(tmpPath)) Directory.Delete(tmpPath, true);
} catch {
}
}
stats.EndTime = DateTime.Now;
if (writeEnabled) {
stats.Status = "Extraction finished";
} else {
stats.Status = "Verification finished";
}
return true;
}
