private bool GuessFormatFromSignature(string filePath, out SevenZipFormat format)
{
using (FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
return(GuessFormatFromSignature(fileStream, out format));
}
}
private bool GuessFormatFromExtension(string fileExtension, out SevenZipFormat format)
{
if (string.IsNullOrWhiteSpace(fileExtension))
{
format = SevenZipFormat.Undefined;
return(false);
}
fileExtension = fileExtension.TrimStart('.').Trim().ToLowerInvariant();
if (fileExtension.Equals("rar"))
{
// 7z has different GUID for Pre-RAR5 and RAR5, but they have both same extension (.rar)
// If it is [0x52 0x61 0x72 0x21 0x1A 0x07 0x01 0x00] then file is RAR5 otherwise RAR.
// https://www.rarlab.com/technote.htm
// We are unable to guess right format just by looking at extension and have to check signature
format = SevenZipFormat.Undefined;
return(false);
}
if (!Formats.ExtensionFormatMapping.ContainsKey(fileExtension))
{
format = SevenZipFormat.Undefined;
return(false);
}
format = Formats.ExtensionFormatMapping[fileExtension];
return(true);
}
public ArchiveFile(string archiveFilePath, string libraryFilePath = null)
{
this.libraryFilePath = libraryFilePath;
this.InitializeAndValidateLibrary();
if (!File.Exists(archiveFilePath))
{
throw new SevenZipException("Archive file not found");
}
string extension = Path.GetExtension(archiveFilePath);
if (string.IsNullOrWhiteSpace(extension))
{
throw new SevenZipException("Unable to guess format for file: " + archiveFilePath);
}
string fileExtension = extension.Trim('.').ToLowerInvariant();
if (!Formats.ExtensionFormatMapping.ContainsKey(fileExtension))
{
throw new SevenZipException(fileExtension + " is not a known archive type");
}
SevenZipFormat format = this.GuessFormatFromExtension(archiveFilePath, fileExtension);
this.archive = this.sevenZipHandle.CreateInArchive(Formats.FormatGuidMapping[format]);
this.archiveStream = new InStreamWrapper(File.OpenRead(archiveFilePath));
}
private bool GuessFormatFromSignature(Stream stream, out SevenZipFormat format)
{
int longestSignature = Formats.FileSignatures.Values.OrderByDescending(v => v.Length).First().Length;
byte[] archiveFileSignature = new byte[longestSignature];
int bytesRead = stream.Read(archiveFileSignature, 0, longestSignature);
stream.Position -= bytesRead; // go back o beginning
if (bytesRead != longestSignature)
{
format = SevenZipFormat.Undefined;
return(false);
}
foreach (KeyValuePair <SevenZipFormat, byte[]> pair in Formats.FileSignatures)
{
if (archiveFileSignature.Take(pair.Value.Length).SequenceEqual(pair.Value))
{
format = pair.Key;
return(true);
}
}
format = SevenZipFormat.Undefined;
return(false);
}
public static bool GuessFormatFromSignature(Stream stream, out SevenZipFormat format)
{
FileSignature longestSig = FileSignatures.Values.OrderByDescending(v => v.Magic.Length + v.Offset).First();
int longestSignatureLen = longestSig.Magic.Length + longestSig.Offset;
byte[] archiveFileSignature = new byte[longestSignatureLen];
int bytesRead = stream.Read(archiveFileSignature, 0, longestSignatureLen);
stream.Position -= bytesRead; // go back o beginning
if (bytesRead != longestSignatureLen)
{
format = SevenZipFormat.Undefined;
return(false);
}
foreach (KeyValuePair <SevenZipFormat, FileSignature> pair in FileSignatures)
{
if (archiveFileSignature.Skip(pair.Value.Offset).Take(pair.Value.Magic.Length).SequenceEqual(pair.Value.Magic))
{
format = pair.Key;
return(true);
}
}
format = SevenZipFormat.Undefined;
return(false);
}
public static SevenZipFormat?FindSevenZipFormat(this string fileExtension, Stream data, SevenZipFormat?fallback = null)
{
data.Seek(0, SeekOrigin.Begin);
SevenZipFormat szf = new SevenZipFormat();
if (GuessFormatFromSignature(data, out szf))
{
return(szf);
}
return(fallback);
}
public string Extract(string archiveName, string folderToExtract, uint fileNumber, KnownSevenZipFormat ZipFormat, out bool isDirectory)
{
isDirectory = false;
ZipFormatG = ZipFormat;
string FileName = null;
try
{
using (SevenZipFormat Format = new SevenZipFormat(SevenZipDllPath))
{
IInArchive Archive = Format.CreateInArchive(SevenZipFormat.GetClassIdFromKnownFormat(ZipFormat));
if (Archive == null)
{
return(null);
}
try
{
using (InStreamWrapper ArchiveStream = new InStreamWrapper(File.OpenRead(archiveName)))
{
IArchiveOpenCallback OpenCallback = new ArchiveOpenCallback();
ulong CheckPos = 256 * 1024;
if (Archive.Open(ArchiveStream, ref CheckPos, OpenCallback) != 0)
{
return(null);
}
PropVariant Name = new PropVariant();
Archive.GetProperty(fileNumber, ItemPropId.kpidPath, ref Name);
FileName = (string)Name.GetObject();
Archive.GetProperty(fileNumber, ItemPropId.kpidIsFolder, ref Name);
isDirectory = (bool)Name.GetObject();
if (!isDirectory)
{
Archive.Extract(new uint[] { fileNumber }, 1, 0, new ArchiveExtractCallback(fileNumber, folderToExtract + FileName));
}
}
}
finally
{
Marshal.ReleaseComObject(Archive);
}
}
}
catch
{
}
return(FileName);
}
private static void ListOrExtract(string archiveName, string extractLocation, bool extract)
{
using (SevenZipFormat Format = new SevenZipFormat(SevenZDllPath)) {
IInArchive Archive = Format.CreateInArchive(SevenZipFormat.GetClassIdFromKnownFormat(KnownSevenZipFormat.SevenZip));
if (Archive == null)
{
return;
}
try {
using (InStreamWrapper ArchiveStream = new InStreamWrapper(File.OpenRead(archiveName))) {
IArchiveOpenCallback OpenCallback = new ArchiveOpenCallback();
// 32k CheckPos is not enough for some 7z archive formats
ulong CheckPos = 128 * 1024;
if (Archive.Open(ArchiveStream, ref CheckPos, OpenCallback) != 0)
{
return;
}
if (extract)
{
uint Count = Archive.GetNumberOfItems();
for (int i = 0; i < Count; i++)
{
PropVariant Name = new PropVariant();
Archive.GetProperty((uint)i, ItemPropId.kpidPath, ref Name);
string FileName = (string)Name.GetObject();
Archive.Extract(new uint[] { (uint)i }, 1, 0, new ArchiveExtractCallback((uint)i, FileName, extractLocation));
}
}
else
{
//Console.WriteLine("List:");
String files = "";
uint Count = Archive.GetNumberOfItems();
for (uint I = 0; I < Count; I++)
{
PropVariant Name = new PropVariant();
Archive.GetProperty(I, ItemPropId.kpidPath, ref Name);
files += String.Format("{0} - {1}\r\n", I, Name.GetObject());
}
MessageBox.Show(files);
}
}
} finally {
Marshal.ReleaseComObject(Archive);
}
}
}
public ArchiveFile(Stream archiveStream, SevenZipFormat format, string libraryFilePath = null)
{
this.libraryFilePath = libraryFilePath;
this.InitializeAndValidateLibrary();
if (archiveStream == null)
{
throw new SevenZipException("archiveStream is null");
}
this.archive = this.sevenZipHandle.CreateInArchive(Formats.FormatGuidMapping[format]);
this.archiveStream = new InStreamWrapper(archiveStream);
}
static SevenZipExtractor()
{
if (IntPtr.Size == 4)
{
format = new SevenZipFormat(System.IO.Path.Combine(System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "x86", "7z.dll"));
}
else if (IntPtr.Size == 8)
{
format = new SevenZipFormat(System.IO.Path.Combine(System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "x64", "7z.dll"));
}
else
{
throw new PlatformNotSupportedException();
}
}
public FirebirdDataAccess(TCommonFireBirdDB manager)
{
if (manager == null)
{
throw new ArgumentNullException("manager");
}
this.manager = manager;
this.connection = manager.Connection;
XsltSettings settings = new XsltSettings();
this.xslt = new XslCompiledTransform();
this.xslt.Load("fb2_text_annotation.xsl", settings, new XmlResourceResolver());
format = new SevenZipFormat("other/7z.dll");
}
public List <string> List(string archiveName, KnownSevenZipFormat ZipFormat)
{
List <string> List = new List <string>();
using (SevenZipFormat Format = new SevenZipFormat(SevenZipDllPath))
{
IInArchive Archive = Format.CreateInArchive(SevenZipFormat.GetClassIdFromKnownFormat(ZipFormat));
if (Archive == null)
{
return(List);
}
try
{
using (InStreamWrapper ArchiveStream = new InStreamWrapper(File.OpenRead(archiveName)))
{
IArchiveOpenCallback OpenCallback = new ArchiveOpenCallback();
ulong CheckPos = 256 * 1024;
if (Archive.Open(ArchiveStream, ref CheckPos, OpenCallback) != 0)
{
return(List);
}
uint Count = Archive.GetNumberOfItems();
for (uint I = 0; I < Count; I++)
{
PropVariant Name = new PropVariant();
Archive.GetProperty(I, ItemPropId.kpidPath, ref Name);
string[] T = Name.GetObject().ToString().Split('\\');
List.Add(T[T.Length - 1]);
}
}
}
finally
{
Marshal.ReleaseComObject(Archive);
}
}
return(List);
}
public override FileFormat Match(FileFormatScanJob job)
{
if (FileFormatUtils.IsNullOrEmpty(job.StartBytes))
{
return(null);
}
if (job.StartBytes.Length <= Signature.Length)
{
return(null);
}
if (!FileFormatUtils.MatchBytes(job.StartBytes, Signature))
{
return(null);
}
var fingerprint = new SevenZipFormat();
return(fingerprint);
}
public IDisposable Subscribe(IObserver <SevenZipArchiveFile> observer)
{
var subject = new Subject <SevenZipArchiveFile>();
subject.Subscribe(observer);
var archive = format.CreateInArchive(SevenZipFormat.GetClassIdFromKnownFormat(KnownSevenZipFormat.SevenZip));
try
{
using (var fileStream = File.OpenRead(this.Name))
{
var maxCheckStartPosition = 128UL * 1024UL;
if (archive.Open(new InStreamWrapper(fileStream), ref maxCheckStartPosition, new ArchiveOpenCallback()) != 0)
{
throw new IOException();
}
var indices = Enumerable.Range(0, (int)archive.GetNumberOfItems())
.Select(index => (uint)index)
.Where(index =>
{
var value = new PropVariant();
archive.GetProperty(index, ItemPropId.kpidIsFolder, ref value);
return(!(bool)value.GetObject());
})
.ToArray();
using (var callback = new ArchiveExtractCallback(archive))
{
callback.Subscribe(subject);
archive.Extract(indices, (uint)indices.Length, 0, callback);
}
}
subject.OnCompleted();
return(subject);
}
finally
{
Marshal.ReleaseComObject(archive);
}
}
/// <summary>
/// Method to try opening an archive, based on an archive type
/// </summary>
/// <param name="stream">Memory stream of the archive</param>
/// <param name="format">Predefined archive format</param>
/// <param name="archive">Opened archive as out parameter. May be null in case of an error</param>
/// <param name="error">Error message. May be empty, if no error occurred</param>
/// <returns>True if the extraction was successful, otherwise false</returns>
private static bool OpenArchive(ref MemoryStream stream, SevenZipFormat format, out ArchiveFile archive, out string error)
{
try
{
archive = new ArchiveFile(stream, format);
if (archive.Entries.Count != 0)
{
error = string.Empty;
return(true);
}
else // will be triggered when the archive is valid but empty
{
error = "Empty Archive";
return(false);
}
}
catch (Exception ex)
{
archive = null;
stream.Position = 0;
error = ex.Message;
return(false);
}
}
private string ExtractFile(string fileName)
{
if (isMono)
return fileName;
SystemState old = state;
state = SystemState.SystemPause;
string ext = Path.GetExtension(fileName).ToLower();
if (ext == ".7z" || ext == ".zip" || ext == ".rar")
{
string sevenZ = this.config["7z"];
if (IntPtr.Size == 8)
sevenZ = this.config["7z64"]; //replace this with installer logic maybe?
SevenZipFormat Format = new SevenZipFormat(sevenZ);
KnownSevenZipFormat fileType;
switch (ext)
{
default:
case ".7z":
fileType = KnownSevenZipFormat.SevenZip;
break;
case ".zip":
fileType = KnownSevenZipFormat.Zip;
break;
case ".rar":
fileType = KnownSevenZipFormat.Rar;
break;
}
IInArchive Archive = Format.CreateInArchive(SevenZipFormat.GetClassIdFromKnownFormat(fileType));
try
{
InStreamWrapper ArchiveStream = new InStreamWrapper(File.OpenRead(fileName));
ulong checkPos = 32 * 1024;
Archive.Open(ArchiveStream, ref checkPos, null);
uint count = Archive.GetNumberOfItems();
string[] archiveContent = new string[count];
for (uint i = 0; i < count; i++)
{
PropVariant name = new PropVariant();
Archive.GetProperty(i, ItemPropId.kpidPath, ref name);
archiveContent[i] = name.GetObject().ToString();
}
if (count == 1)
{
fileName = Path.Combine(this.config["tmpDir"], Path.GetFileNameWithoutExtension(archiveContent[0]) + ".tmp" + Path.GetExtension(archiveContent[0]));
Archive.Extract(new uint[] { 0 }, 1, 0, new ArchiveCallback(0, fileName));
}
else
{
ArchiveViewer viewer = new ArchiveViewer(archiveContent);
if (viewer.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
fileName = Path.Combine(this.config["tmpDir"], Path.GetFileNameWithoutExtension(archiveContent[viewer.selectedFile]) + ".tmp" + Path.GetExtension(archiveContent[0]));
Archive.Extract(new uint[] { (uint)viewer.selectedFile }, 1, 0, new ArchiveCallback((uint)viewer.selectedFile, fileName));
}
else
{
fileName = "";
}
}
ArchiveStream.Dispose();
}
finally
{
Archive.Close();
Marshal.ReleaseComObject(Archive);
}
Format.Dispose();
}
state = old;
return fileName;
}
public SevenZipFileProvider()
{
sevenZip = new SevenZipFormat(@"other\7z.dll");
defaultListeners = new List<IFileSystemListener>();
}
