| public static CreateHeader ( string fileName, bool isDir, long size, System.DateTime lastWriteTime, int &paddingSize, bool isLongLinkPseudoentry = false ) : byte[] | ||
| fileName | string | |
| isDir | bool | |
| size | long | |
| lastWriteTime | System.DateTime | |
| paddingSize | int | |
| isLongLinkPseudoentry | bool | |
| Результат | byte[] | |
public static byte[] CreateHeader(string fileName, bool isDir, long size, DateTime lastWriteTime, out int paddingSize, bool isLongLinkPseudoentry = false)
{
byte[] hdr = new byte[512];
byte[] longLinkPrefix = null;
fileName = fileName.Replace('\\', '/');
if (isDir && !fileName.EndsWith("/"))
fileName += "/";
string fnPrefix = null;
if (fileName.Length > 100)
{
int idx = fileName.Length - 100;
idx = fileName.IndexOf('/', idx);
if (idx != -1 && idx != fileName.Length - 1)
{
fnPrefix = fileName.Substring(0, idx);
fileName = fileName.Substring(idx + 1);
}
else
{
byte[] rawName = Encoding.UTF8.GetBytes(fileName);
int sectors = (rawName.Length + 511) / 512;
int unused;
longLinkPrefix = new byte[512 + sectors * 512];
CreateHeader("././@LongLink", false, rawName.Length, lastWriteTime, out unused, true).CopyTo(longLinkPrefix, 0);
longLinkPrefix[156] = (byte)'L';
rawName.CopyTo(longLinkPrefix, 512);
}
}
paddingSize = (int)size & 511;
if (paddingSize != 0)
paddingSize = 512 - paddingSize;
WriteTextField(hdr, 0, 100, fileName);
if (isLongLinkPseudoentry)
{
WriteOctalField(hdr, 100, 8, 0); //File mode
WriteOctalField(hdr, 108, 8, 0); //User ID
WriteOctalField(hdr, 116, 8, 0); //Group ID
WriteOctalField(hdr, 136, 12, 0); //Last modification time
}
else
{
WriteOctalField(hdr, 100, 8, Convert.ToInt32("755", 8)); //File mode
WriteOctalField(hdr, 108, 8, 500); //User ID
WriteOctalField(hdr, 116, 8, 544); //Group ID
WriteOctalField(hdr, 136, 12, (long)(lastWriteTime - UnixEpoch).TotalSeconds); //Last modification time
}
WriteOctalField(hdr, 124, 12, size); //File size
// WriteTextField(hdr, 257, 8, "ustar ");
WriteTextField(hdr, 257, 8, "ustar\0" + "00");
// WriteTextField(hdr, 265, 32, userName);
// WriteTextField(hdr, 297, 32, groupName);
WriteTextField(hdr, 345, 155, fnPrefix);
if (isLongLinkPseudoentry)
hdr[156] = (byte)'L';
else if (isDir)
hdr[156] = (byte)'5';
else
hdr[156] = (byte)'0';
int checksum = 0x20 * 8;
for (int i = 0; i < hdr.Length; i++)
checksum += hdr[i];
WriteOctalField(hdr, 148, 8, checksum);
if (longLinkPrefix != null)
{
var result = new byte[longLinkPrefix.Length + hdr.Length];
longLinkPrefix.CopyTo(result, 0);
hdr.CopyTo(result, longLinkPrefix.Length);
return result;
}
return hdr;
}
static void ArchiveDirectoryToTARRecursively(Stream tarStream, string absoluteDirectory, string relativeDirectoryInUnixFormat, ref int filesDone, ref long bytesDone, byte[] paddingBuffer, byte[] tempBuffer, FileNameFilter filter)
{
WIN32_FIND_DATA findData;
List <SubdirInfo> subdirs = new List <SubdirInfo>();
IntPtr hFind = FindFirstFile(absoluteDirectory + "\\*.*", out findData);
int paddingSize;
if (hFind == (IntPtr)(-1))
{
return;
}
try
{
do
{
if ((findData.cFileName == ".") || (findData.cFileName == ".."))
{
continue;
}
if ((findData.dwFileAttributes & FileAttributes.Directory) != 0)
{
subdirs.Add(new SubdirInfo {
Name = findData.cFileName, Date = DateTime.FromFileTime(MAKELONGLONG(findData.ftLastWriteTime.dwHighDateTime, findData.ftLastWriteTime.dwLowDateTime))
});
}
else
{
string localFN = Path.Combine(absoluteDirectory, findData.cFileName);
if (filter != null && !filter(localFN))
{
continue;
}
using (var fsLocal = File.Open(localFN, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
string rel = relativeDirectoryInUnixFormat;
if (rel != "")
{
rel += "/";
}
rel += findData.cFileName;
var timestamp = DateTime.FromFileTime(MAKELONGLONG(findData.ftLastWriteTime.dwHighDateTime, findData.ftLastWriteTime.dwLowDateTime));
long len = fsLocal.Length;
var hdr = TarPacker.CreateHeader(rel, false, len, timestamp, out paddingSize);
tarStream.Write(hdr, 0, hdr.Length);
CopyStreamWithProgress(fsLocal, tarStream, ref filesDone, ref bytesDone, tempBuffer, len);
tarStream.Write(paddingBuffer, 0, paddingSize);
}
}
} while (FindNextFile(hFind, out findData));
}
finally
{
FindClose(hFind);
}
foreach (var subdir in subdirs)
{
string rel = relativeDirectoryInUnixFormat;
if (rel != "")
{
rel += "/";
}
rel += subdir.Name;
tarStream.Write(TarPacker.CreateHeader(rel, true, 0, subdir.Date, out paddingSize), 0, 512);
ArchiveDirectoryToTARRecursively(tarStream, Path.Combine(absoluteDirectory, subdir.Name), rel, ref filesDone, ref bytesDone, paddingBuffer, tempBuffer, filter);
}
}