static void RewriteFile()
{
while (true)
{
Console.Write("Input file [ENTER to exit]: ");
string inFile = Console.ReadLine();
if (String.IsNullOrEmpty(inFile))
{
break;
}
Console.Write("Output file: ");
string outFile = Console.ReadLine();
Console.Write("Chunk size: ");
int chunkSize = Convert.ToInt32(Console.ReadLine());
Console.Write("Shift size: ");
int shiftSize = Convert.ToInt32(Console.ReadLine());
FileInfo fi = new FileInfo(inFile);
long contentLength = fi.Length;
using (FileStream fs = new FileStream(inFile, FileMode.Open))
{
_Streams = new Streams(fs, contentLength, chunkSize, shiftSize);
Console.WriteLine("Input data size : " + contentLength);
Console.WriteLine("Chunk count : " + _Streams.ChunkCount());
byte[] bytes = null;
int chunkCount = 1;
byte[] ret = null;
while (true)
{
bool finalChunk = false;
long position = 0;
byte[] newData = null;
bytes = _Streams.GetNextChunk(out position, out newData, out finalChunk);
/*
*
* Uncomment these lines to debug on small files
*
*
* Console.WriteLine(
* "Chunk " + chunkCount + " at index " + position + " [" + bytes.Length + " bytes]: " + Environment.NewLine +
* " Chunk data : '" + Encoding.UTF8.GetString(bytes) + "'" + Environment.NewLine +
* " New data : '" + Encoding.UTF8.GetString(newData) + "'");
*
*/
if (ret == null)
{
ret = new byte[newData.Length];
Buffer.BlockCopy(newData, 0, ret, 0, newData.Length);
// Console.WriteLine("Returned data is now: '" + Encoding.UTF8.GetString(ret) + "'");
}
else
{
ret = AppendBytes(ret, newData);
// Console.WriteLine("Returned data is now: '" + Encoding.UTF8.GetString(ret) + "'");
}
if (!String.IsNullOrEmpty(outFile))
{
using (FileStream outFs = new FileStream(outFile, FileMode.Append))
{
outFs.Write(newData);
}
}
if (finalChunk)
{
break;
}
chunkCount++;
}
}
Console.WriteLine();
}
}
static void Interactive()
{
Console.Write("Input file [ENTER to exit]: ");
string inFile = Console.ReadLine();
if (String.IsNullOrEmpty(inFile))
{
return;
}
Console.Write("Chunk size: ");
int chunkSize = Convert.ToInt32(Console.ReadLine());
Console.Write("Shift size: ");
int shiftSize = Convert.ToInt32(Console.ReadLine());
FileInfo fi = new FileInfo(inFile);
long contentLength = fi.Length;
using (FileStream fs = new FileStream(inFile, FileMode.Open))
{
_Streams = new Streams(fs, contentLength, chunkSize, shiftSize);
Console.WriteLine("Input data size : " + contentLength);
Console.WriteLine("Chunk count : " + _Streams.ChunkCount());
byte[] bytes = null;
bool finalChunk = false;
long position = 0;
byte[] newData = null;
while (true)
{
Console.Write("Command [next advance q chunksize shiftsize nextstart remaining prev]: ");
string userInput = null;
while (String.IsNullOrEmpty(userInput))
{
userInput = Console.ReadLine();
}
switch (userInput)
{
case "next":
bytes = _Streams.GetNextChunk(out position, out newData, out finalChunk);
if (bytes != null && bytes.Length > 0 &&
newData != null && newData.Length > 0)
{
Console.WriteLine("Position : " + position);
Console.WriteLine("Chunk data : '" + Encoding.UTF8.GetString(bytes) + "'");
Console.WriteLine("New data : '" + Encoding.UTF8.GetString(newData) + "'");
if (finalChunk)
{
Console.WriteLine("*** Final chunk ***");
}
}
else
{
Console.WriteLine("No data");
}
break;
case "advance":
Console.WriteLine("Advancing to next new chunk");
_Streams.AdvanceToNewChunk();
break;
case "q":
return;
case "chunksize":
Console.WriteLine("Chunk size: " + _Streams.ChunkSize);
break;
case "shiftsize":
Console.WriteLine("Shift size: " + _Streams.ShiftSize);
break;
case "nextstart":
Console.WriteLine("Next start position: " + _Streams.NextStartPosition);
break;
case "remaining":
Console.WriteLine("Remaining bytes: " + _Streams.BytesRemaining);
break;
case "prev":
if (_Streams.PreviousChunk == null || _Streams.PreviousChunk.Length < 1)
{
Console.WriteLine("(null)");
}
else
{
Console.WriteLine("Previous chunk: '" + Encoding.UTF8.GetString(_Streams.PreviousChunk) + "'");
}
break;
default:
break;
}
}
}
}
