internal static FileInfo GetFilePart(int index, FileInfo part1) //base the name on the first part
{
FileInfo item = null;
//new style rar - ..part1 | /part01 | part001 ....
Match m = Regex.Match(part1.Name, @"^(.*\.part)([0-9]+)(\.rar)$", RegexOptions.IgnoreCase);
if (m.Success)
{
item = new FileInfo(Path.Combine(part1.DirectoryName, String.Concat(m.Groups[1].Value, (index + 1).ToString().PadLeft(m.Groups[2].Value.Length, '0'), m.Groups[3].Value)));
}
else
{
//old style - ...rar, .r00, .r01 ...
m = Regex.Match(part1.Name, @"^(.*\.r)(ar|[0-9]+)$", RegexOptions.IgnoreCase);
if (m.Success)
{
item = new FileInfo(Path.Combine(part1.DirectoryName, String.Concat(m.Groups[1].Value, index == 0 ? "ar" : (index - 1).ToString().PadLeft(m.Groups[2].Value.Length, '0'))));
}
else //split .001, .002 ....
{
return(ArchiveVolumeFactory.GetFilePart(index, part1));
}
}
if (item != null && item.Exists)
{
return(item);
}
return(null); //no more items
}
internal static FileInfo GetFilePart(int index, FileInfo part1) //base the name on the first part
{
FileInfo item = null;
//load files with zip/zipx first. Swapped to end once loaded in ZipArchive
//new style .zip, z01.. | .zipx, zx01 - if the numbers go beyond 99 then they use 100 ...1000 etc
Match m = Regex.Match(part1.Name, @"^(.*\.)(zipx?|zx?[0-9]+)$", RegexOptions.IgnoreCase);
if (m.Success)
{
item = new FileInfo(Path.Combine(part1.DirectoryName, String.Concat(m.Groups[1].Value, Regex.Replace(m.Groups[2].Value, @"[^xz]", ""), index.ToString().PadLeft(2, '0'))));
}
else //split - 001, 002 ...
{
return(ArchiveVolumeFactory.GetFilePart(index, part1));
}
if (item != null && item.Exists)
{
return(item);
}
return(null); //no more items
}
public static SevenZipArchive Open(FileInfo fileInfo, ReaderOptions readerOptions = null)
{
fileInfo.CheckNotNull("fileInfo");
return(new SevenZipArchive(new SourceStream(fileInfo, i => ArchiveVolumeFactory.GetFilePart(i, fileInfo), readerOptions ?? new ReaderOptions())));
}
/// <summary>
/// Constructor with a FileInfo object to an existing file.
/// </summary>
/// <param name="fileInfo"></param>
/// <param name="readerOptions"></param>
public static TarArchive Open(FileInfo fileInfo, ReaderOptions?readerOptions = null)
{
fileInfo.CheckNotNull(nameof(fileInfo));
return(new TarArchive(new SourceStream(fileInfo, i => ArchiveVolumeFactory.GetFilePart(i, fileInfo), readerOptions ?? new ReaderOptions())));
}
