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using System.IO;
using SharpCompress.Common;
using SharpCompress.IO;
namespace SharpCompress.Archive
{
internal static class IArchiveEntryExtensions
{
public static void WriteTo(this IArchiveEntry archiveEntry, Stream streamToWriteTo)
{
if (archiveEntry.Archive.Type == ArchiveType.Rar && archiveEntry.Archive.IsSolid)
{
throw new InvalidFormatException("Cannot use Archive random access on SOLID Rar files.");
}
if (archiveEntry.IsDirectory)
{
throw new ExtractionException("Entry is a file directory and cannot be extracted.");
}
var streamListener = archiveEntry.Archive as IArchiveExtractionListener;
streamListener.EnsureEntriesLoaded();
streamListener.FireEntryExtractionBegin(archiveEntry);
streamListener.FireFilePartExtractionBegin(archiveEntry.Key, archiveEntry.Size, archiveEntry.CompressedSize);
var entryStream = archiveEntry.OpenEntryStream();
if (entryStream == null)
{
return;
}
using(entryStream)
using (Stream s = new ListeningStream(streamListener, entryStream))
{
s.TransferTo(streamToWriteTo);
}
streamListener.FireEntryExtractionEnd(archiveEntry);
}
#if !PORTABLE && !NETFX_CORE
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteToDirectory(this IArchiveEntry entry, string destinationDirectory,
ExtractOptions options = ExtractOptions.Overwrite)
{
string destinationFileName;
string file = Path.GetFileName(entry.Key);
if (options.HasFlag(ExtractOptions.ExtractFullPath))
{
string folder = Path.GetDirectoryName(entry.Key);
string destdir = Path.Combine(destinationDirectory, folder);
if (!Directory.Exists(destdir))
{
Directory.CreateDirectory(destdir);
}
destinationFileName = Path.Combine(destdir, file);
}
else
{
destinationFileName = Path.Combine(destinationDirectory, file);
}
entry.WriteToFile(destinationFileName, options);
}
/// <summary>
/// Extract to specific file
/// </summary>
public static void WriteToFile(this IArchiveEntry entry, string destinationFileName,
ExtractOptions options = ExtractOptions.Overwrite)
{
if (entry.IsDirectory)
{
return;
}
FileMode fm = FileMode.Create;
if (!options.HasFlag(ExtractOptions.Overwrite))
{
fm = FileMode.CreateNew;
}
using (FileStream fs = File.Open(destinationFileName, fm))
{
entry.WriteTo(fs);
}
}
#endif
}
}
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