public void Dispose()
{
if (this.archiveHandle != IntPtr.Zero)
{
Unrar.RARCloseArchive(this.archiveHandle);
this.archiveHandle = IntPtr.Zero;
}
}
private void Extract(string destinationPath, string destinationName)
{
int result = Unrar.RARProcessFile(this.archiveHandle, (int)Operation.Extract, destinationPath, destinationName);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
}
/// <summary>
/// Tests the ability to extract the current file without saving extracted data to disk
/// </summary>
/// <returns></returns>
public void Test()
{
int result = Unrar.RARProcessFile(this.archiveHandle, (int)Operation.Test, string.Empty, string.Empty);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
}
/// <summary>
/// Close the currently open archive
/// </summary>
/// <returns></returns>
public void Close()
{
// Exit without exception if no archive is open
if (this.archiveHandle == IntPtr.Zero)
{
return;
}
// Close archive
int result = Unrar.RARCloseArchive(this.archiveHandle);
// Check result
if (result != 0)
{
ProcessFileError(result);
}
else
{
this.archiveHandle = IntPtr.Zero;
}
}
private void AttachHandlers(Unrar unrar)
{
unrar.ExtractionProgress += new ExtractionProgressHandler(unrar_ExtractionProgress);
unrar.MissingVolume += new MissingVolumeHandler(unrar_MissingVolume);
unrar.PasswordRequired += new PasswordRequiredHandler(unrar_PasswordRequired);
}
/// <summary>
/// Reads the next archive header and populates CurrentFile property data
/// </summary>
/// <returns></returns>
public bool ReadHeader()
{
// Throw exception if archive not open
if (this.archiveHandle == IntPtr.Zero)
{
throw new IOException("Archive is not open.");
}
// Initialize header struct
this.header = new RARHeaderDataEx();
header.Initialize();
// Read next entry
currentFile = null;
int result = Unrar.RARReadHeaderEx(this.archiveHandle, ref this.header);
// Check for error or end of archive
if ((RarError)result == RarError.EndOfArchive)
{
return(false);
}
else if ((RarError)result == RarError.BadData)
{
throw new IOException("Archive data is corrupt.");
}
// Determine if new file
if (((header.Flags & 0x01) != 0) && currentFile != null)
{
currentFile.ContinuedFromPrevious = true;
}
else
{
// New file, prepare header
currentFile = new RARFileInfo();
currentFile.FileName = header.FileNameW.ToString();
if ((header.Flags & 0x02) != 0)
{
currentFile.ContinuedOnNext = true;
}
if (header.PackSizeHigh != 0)
{
currentFile.PackedSize = (header.PackSizeHigh * 0x100000000) + header.PackSize;
}
else
{
currentFile.PackedSize = header.PackSize;
}
if (header.UnpSizeHigh != 0)
{
currentFile.UnpackedSize = (header.UnpSizeHigh * 0x100000000) + header.UnpSize;
}
else
{
currentFile.UnpackedSize = header.UnpSize;
}
currentFile.HostOS = (int)header.HostOS;
currentFile.FileCRC = header.FileCRC;
currentFile.FileTime = FromMSDOSTime(header.FileTime);
currentFile.VersionToUnpack = (int)header.UnpVer;
currentFile.Method = (int)header.Method;
currentFile.FileAttributes = (int)header.FileAttr;
currentFile.BytesExtracted = 0;
if ((header.Flags & 0x20) == 0x20)
{
currentFile.IsDirectory = true;
}
this.OnNewFile();
}
// Return success
return(true);
}
/// <summary>
/// Opens specified archive using the specified mode.
/// </summary>
/// <param name="archivePathName">Path of archive to open</param>
/// <param name="openMode">Mode in which to open archive</param>
public void Open(string archivePathName, OpenMode openMode)
{
IntPtr handle = IntPtr.Zero;
// Close any previously open archives
if (this.archiveHandle != IntPtr.Zero)
{
this.Close();
}
// Prepare extended open archive struct
this.ArchivePathName = archivePathName;
RAROpenArchiveDataEx openStruct = new RAROpenArchiveDataEx();
openStruct.Initialize();
openStruct.ArcName = this.archivePathName + "\0";
openStruct.ArcNameW = this.archivePathName + "\0";
openStruct.OpenMode = (uint)openMode;
if (this.retrieveComment)
{
openStruct.CmtBuf = new string((char)0, 65536);
openStruct.CmtBufSize = 65536;
}
else
{
openStruct.CmtBuf = null;
openStruct.CmtBufSize = 0;
}
// Open archive
handle = Unrar.RAROpenArchiveEx(ref openStruct);
// Check for success
if (openStruct.OpenResult != 0)
{
switch ((RarError)openStruct.OpenResult)
{
case RarError.InsufficientMemory:
throw new OutOfMemoryException("Insufficient memory to perform operation.");
case RarError.BadData:
throw new IOException("Archive header broken");
case RarError.BadArchive:
throw new IOException("File is not a valid archive.");
case RarError.OpenError:
throw new IOException("File could not be opened.");
}
}
// Save handle and flags
this.archiveHandle = handle;
this.archiveFlags = (ArchiveFlags)openStruct.Flags;
// Set callback
Unrar.RARSetCallback(this.archiveHandle, this.callback, this.GetHashCode());
// If comment retrieved, save it
if (openStruct.CmtState == 1)
{
this.comment = openStruct.CmtBuf.ToString();
}
// If password supplied, set it
if (this.password.Length != 0)
{
Unrar.RARSetPassword(this.archiveHandle, this.password);
}
// Fire NewVolume event for first volume
this.OnNewVolume(this.archivePathName);
}