/// <summary>
/// Get writer for the archive entry
/// </summary>
/// <param name="entry"></param>
/// <returns></returns>
public static IArchiveEntryWriter GetWriter(InternalWriteArchiveEntry entry, IReadableCPIOArchiveEntry readableEntry)
{
switch (entry.ArchiveType)
{
case ArchiveEntryType.DIRECTORY:
return(new DirectoryEntryWriter(entry, readableEntry));
case ArchiveEntryType.FILE:
if (entry.nLink > 1)
{
return(new HardLinkEntryWriter(entry, readableEntry));
}
else
{
return(new FileEntryWriter(entry, readableEntry));
}
case ArchiveEntryType.SYMBOLIC_LINK:
return(new SymbolicLinkEntryWriter(entry, readableEntry));
default:
throw new Exception("Нет класса, реализующего запись для данного типа");
}
}
public DirectoryEntryWriter(InternalWriteArchiveEntry internalEntry, IReadableCPIOArchiveEntry readableArchiveEntry)
: base(internalEntry, readableArchiveEntry)
{
}
public SymbolicLinkEntryWriter(InternalWriteArchiveEntry internalEntry, IReadableCPIOArchiveEntry readableArchiveEntry)
: base(internalEntry, readableArchiveEntry)
{
}
public AbstractArchiveEntryWriter(InternalWriteArchiveEntry internalEntry, IReadableCPIOArchiveEntry readableArchiveEntry)
{
_internalEntry = internalEntry;
_readableArchiveEntry = readableArchiveEntry;
}
/// <summary>
/// Extract archive to disk
/// </summary>
/// <param name="destFolder"></param>
/// <param name="flags"></param>
/// <returns></returns>
public bool Extract(string destFolder, CpioExtractFlags[] flags = null)
{
if (!Directory.Exists(destFolder))
{
if (Directory.CreateDirectory(destFolder) == null)
{
throw new Exception(string.Format("The destinition directory {0} can not be created", destFolder));
}
}
bool findTrailer = false;
_fileStream.Seek(0, SeekOrigin.Begin);
// list all the archive entry
List <IReadableCPIOArchiveEntry> archiveEntries = new List <IReadableCPIOArchiveEntry>();
IReadableCPIOArchiveEntry archiveEntry = CreateReadableArchiveEntry(flags);
int sizeBuffer = archiveEntry.EntrySize;
byte[] buffer = new byte[sizeBuffer];
while (_fileStream.Read(buffer, 0, sizeBuffer) == sizeBuffer)
{
archiveEntry = CreateReadableArchiveEntry(flags);
archiveEntry.FillEntry(buffer);
ulong fileNameSize = archiveEntry.FileNameSize;
if (fileNameSize != 0)
{
byte[] fileName = new byte[fileNameSize];
_fileStream.Read(fileName, 0, (int)fileNameSize);
archiveEntry.FileName = fileName;
}
if (archiveEntry.IsLastArchiveEntry())
{
findTrailer = true;
break;
}
archiveEntry.ReadMetadataEntry();
if (archiveEntry.HasData)
{
ulong dataSize = archiveEntry.DataSize;
byte[] data = new byte[dataSize];
_fileStream.Read(data, 0, (int)dataSize);
archiveEntry.Data = data;
}
// save entry to disk
if (archiveEntry.Writer.ExtractEntryToDisk(destFolder) == null)
{
Console.WriteLine("Fail to extract the archive entry: {0}", archiveEntry.ToString());
Directory.Delete(destFolder, true);
return(false);
}
archiveEntries.Add(archiveEntry);
}
if (!findTrailer)
{
Console.WriteLine("Not find the end entry in file. File is invalid format");
Directory.Delete(destFolder, true);
return(false);
}
else
{
return(PostProcessingEntries(destFolder, archiveEntries));
}
}
