| public static GetOctalBytes ( long value, byte buffer, int offset, int length ) : int | ||
| value | long | /// the value to be converted to octal /// |
| buffer | byte | /// buffer to store the octal string /// |
| offset | int | /// The offset into the buffer where the value starts /// |
| length | int | /// The length of the octal string to create /// |
| return | int | |
/// <summary>
/// Add the checksum octal integer to header buffer.
/// </summary>
/// <param name = "val">
/// </param>
/// <param name = "buf">
/// The header buffer to set the checksum for
/// </param>
/// <param name = "offset">
/// The offset into the buffer for the checksum
/// </param>
/// <param name = "length">
/// The number of header bytes to update.
/// It's formatted differently from the other fields: it has 6 digits, a
/// null, then a space -- rather than digits, a space, then a null.
/// The final space is already there, from checksumming
/// </param>
/// <returns>
/// The modified buffer offset
/// </returns>
private static int GetCheckSumOctalBytes(long val, byte[] buf, int offset, int length)
{
TarHeader.GetOctalBytes(val, buf, offset, length - 1);
// buf[offset + length - 1] = (byte)' '; -jr- 23-Jan-2004 this causes failure!!!
// buf[offset + length - 2] = 0;
return(offset + length);
}
private static int GetBinaryOrOctalBytes(long value, byte[] buffer, int offset, int length)
{
if (value > 8589934591L)
{
for (int i = length - 1; i > 0; i--)
{
buffer[offset + i] = (byte)value;
value >>= 8;
}
buffer[offset] = 128;
return(offset + length);
}
return(TarHeader.GetOctalBytes(value, buffer, offset, length));
}
public void WriteHeader(byte[] outBuffer)
{
if (outBuffer == null)
{
throw new ArgumentNullException("outBuffer");
}
int i = 0;
i = TarHeader.GetNameBytes(this.Name, outBuffer, i, 100);
i = TarHeader.GetOctalBytes((long)this.mode, outBuffer, i, 8);
i = TarHeader.GetOctalBytes((long)this.UserId, outBuffer, i, 8);
i = TarHeader.GetOctalBytes((long)this.GroupId, outBuffer, i, 8);
long value = this.Size;
i = TarHeader.GetLongOctalBytes(value, outBuffer, i, 12);
i = TarHeader.GetLongOctalBytes((long)TarHeader.GetCTime(this.ModTime), outBuffer, i, 12);
int offset = i;
for (int j = 0; j < 8; j++)
{
outBuffer[i++] = 32;
}
outBuffer[i++] = this.TypeFlag;
i = TarHeader.GetNameBytes(this.LinkName, outBuffer, i, 100);
i = TarHeader.GetAsciiBytes(this.Magic, 0, outBuffer, i, 6);
i = TarHeader.GetNameBytes(this.Version, outBuffer, i, 2);
i = TarHeader.GetNameBytes(this.UserName, outBuffer, i, 32);
i = TarHeader.GetNameBytes(this.GroupName, outBuffer, i, 32);
if (this.TypeFlag == 51 || this.TypeFlag == 52)
{
i = TarHeader.GetOctalBytes((long)this.DevMajor, outBuffer, i, 8);
i = TarHeader.GetOctalBytes((long)this.DevMinor, outBuffer, i, 8);
}
while (i < outBuffer.Length)
{
outBuffer[i++] = 0;
}
this.checksum = TarHeader.ComputeCheckSum(outBuffer);
TarHeader.GetCheckSumOctalBytes((long)this.checksum, outBuffer, offset, 8);
this.isChecksumValid = true;
}
/// <summary>
/// Add the checksum integer to header buffer.
/// </summary>
/// <param name = "value"></param>
/// <param name = "buffer">The header buffer to set the checksum for</param>
/// <param name = "offset">The offset into the buffer for the checksum</param>
/// <param name = "length">The number of header bytes to update.
/// It's formatted differently from the other fields: it has 6 digits, a
/// null, then a space -- rather than digits, a space, then a null.
/// The final space is already there, from checksumming
/// </param>
/// <returns>The modified buffer offset</returns>
static int GetCheckSumOctalBytes(long value, byte[] buffer, int offset, int length)
{
TarHeader.GetOctalBytes(value, buffer, offset, length - 1);
return(offset + length);
}
public static int GetLongOctalBytes(long value, byte[] buffer, int offset, int length)
{
return(TarHeader.GetOctalBytes(value, buffer, offset, length));
}
private static void GetCheckSumOctalBytes(long value, byte[] buffer, int offset, int length)
{
TarHeader.GetOctalBytes(value, buffer, offset, length - 1);
}
