private void CopySection()
{
// Console.WriteLine("first = " + firstSource + ":" + startPosition + " last = " + lastSource + ":" + endPosition);
try
{
if (textMode)
{
//Console.WriteLine(">> first = " + firstSource + ":" + startPosition + " last = " + lastSource + ":" + endPosition);
char[] buf = new char[256 * 1024];
int c;
using (StreamWriter d = ZStreamWriter.Open(dest))
{
// First file:
Encoding enc = null;
if (startPosition == 0)
{
startMutex.Set();
}
else
{
using (StreamReader s = ZStreamReader.Open(source[firstSource]))
{
s.Read();
enc = s.CurrentEncoding;
}
//if (enc is UnicodeEncoding)
//{
// // what about endianness? ***
// enc = UTF16Raw.UTF16;
//}
byte[] preamble = enc.GetPreamble();
if (preamble != null && preamble.Length != 0)
{
enc = new NoPreambleEncoding(enc);
}
}
//using (PositionStreamReader s = new PositionStreamReader(
// ZStreamIn.Open(source[firstSource])))
//{
// while ((line = s.ReadLine()) != null)
// {
// if (s.Position >= startPosition) break;
// d.WriteLine(line);
// }
// while ((line = s.ReadLine()) != null)
// {
// d.WriteLine(line);
// if (firstSource == lastSource && s.Position > endPosition) break;
// }
//}
using (Stream ss = ZStreamIn.Open(source[firstSource]))
{
bool done = false;
// find the start (next newline after specified):
if (startPosition != 0)
{
ss.Seek(startPosition, SeekOrigin.Begin);
int b = ss.ReadByte();
for (; b >= 0 && b != '\n'; b = ss.ReadByte())
{
}
if (b < 0)
{
done = true;
startPosition = long.MaxValue;
}
else
{
startPosition = ss.Position;
}
startMutex.Set();
}
//Console.WriteLine("start: " + firstSource + ":" + ss.Position);
if (!done)
{
long len = ss.Length;
//bool newlineTerminate = false;
Stream sss = ss;
if (firstSource < lastSource || endPosition == long.MaxValue ||
endPosition < 0 ||
(len >= 0 && endPosition >= len))
{
// write the whole file until the end:
//newlineTerminate = true;
}
else
{
// need to get the end correctly!! From the next reader?? ******
if (next != null)
{
endPosition = next.TrueStart;
}
sss = new BoundedStream(ss, ss.Position, endPosition);
//Console.WriteLine("end: " + firstSource + ":" + endPosition);
}
using (StreamReader s = startPosition == 0 ?
new StreamReader(sss) : new StreamReader(sss, enc, false))
{
c = s.Read(buf, 0, buf.Length);
if (c > 0)
{
int lastC = c;
d.Write(buf, 0, c);
while ((c = s.Read(buf, 0, buf.Length)) > 0)
{
d.Write(buf, 0, c);
lastC = c;
}
if (buf[lastC - 1] != '\n')
{
// file didn't end in a newline - add one in!
// but newlines are no longer converted without ReadLine/WriteLine! ***
//Console.Error.WriteLine("no newline!!! 1");
d.WriteLine();
}
}
}
}
}
// Remaining files:
if (firstSource < lastSource)
{
int lastFullSource = lastSource;
if (endPosition != long.MaxValue && endPosition >= 0)
{
lastFullSource--;
}
// Full files:
for (int i = firstSource + 1; i <= lastFullSource; i++)
{
using (StreamReader s = ZStreamReader.Open(source[i]))
{
//while ((line = s.ReadLine()) != null)
//{
// d.WriteLine(line);
//}
c = s.Read(buf, 0, buf.Length);
if (c > 0)
{
int lastC = c;
d.Write(buf, 0, c);
while ((c = s.Read(buf, 0, buf.Length)) > 0)
{
d.Write(buf, 0, c);
lastC = c;
}
if (buf[lastC - 1] != '\n')
{
// file didn't end in a newline - add one in!
// but newlines are no longer converted without ReadLine/WriteLine! ***
//Console.Error.WriteLine("no newline!!! 2");
d.WriteLine();
}
}
}
}
// Last file:
//if (last != lastSource)
//{
//using (PositionStreamReader s = new PositionStreamReader(
// ZStreamIn.Open(source[lastSource])))
//{
// while ((line = s.ReadLine()) != null)
// {
// d.WriteLine(line);
// if (s.Position > endPosition) break;
// }
//}
if (lastFullSource != lastSource)
{
using (Stream ss = ZStreamIn.Open(source[lastSource]))
{
// need to get the end correctly!! From the next reader?? ******
long len = ss.Length;
Stream sss = ss;
if (len >= 0 && endPosition >= len)
{
// write the whole file until the end:
//newlineTerminate = true;
}
else
{
// need to get the end correctly!! From the next reader?? ******
if (next != null)
{
endPosition = next.TrueStart;
}
sss = new BoundedStream(ss, 0, endPosition);
//Console.WriteLine("end: " + firstSource + ":" + endPosition);
}
using (StreamReader s = new StreamReader(sss))
{
c = s.Read(buf, 0, buf.Length);
if (c > 0)
{
int lastC = c;
d.Write(buf, 0, c);
while ((c = s.Read(buf, 0, buf.Length)) > 0)
{
d.Write(buf, 0, c);
lastC = c;
}
if (buf[lastC - 1] != '\n')
{
// file didn't end in a newline - add one in!
// but newlines are no longer converted without ReadLine/WriteLine! ***
// this one should never happen...
//Console.Error.WriteLine("no newline!!! 3");
d.WriteLine();
}
}
}
}
}
}
}
}
else
{
//using (Stream d = ZStreamOut.Open(dest))
using (Stream d = new CosmosWriteStream(dest, false, breakAtLines))
{
byte[] buf = new byte[256 * 1024];
int count;
for (int i = firstSource; i <= lastSource; i++)
{
using (Stream s = ZStreamIn.Open(source[i]))
//using (Stream s = new BufferedStream(ZStreamIn.Open(source[i]), 8*1024*1024))
{
if (i == firstSource && startPosition != 0)
{
s.Seek(startPosition, SeekOrigin.Begin);
}
if (i == lastSource && endPosition >= 0 && endPosition < long.MaxValue)
{
long total = startPosition;
int limit = buf.Length;
if (total + limit > endPosition)
{
limit = (int)(endPosition - total);
}
while (total < endPosition && (count = s.Read(buf, 0, limit)) > 0)
{
d.Write(buf, 0, count);
total += count;
// > ? or >=?
if (total + limit > endPosition)
{
limit = (int)(endPosition - total);
}
}
}
else
{
while ((count = s.Read(buf, 0, buf.Length)) > 0)
{
d.Write(buf, 0, count);
}
}
}
}
}
}
Console.WriteLine("<< first = " + firstSource + ":" + startPosition + " last = " + lastSource + ":" + endPosition);
}
catch
{
try
{
Delete(dest);
}
catch
{
}
hasError = true;
}
}
private static void Append(string source, string destination, bool retryNoExist)
{
if (source == destination)
{
throw new IOException("Could not append '" + source + "' to itself");
}
//if (!Cosmos.FileExists(destination))
//{
// Console.WriteLine("Copy(" + source + ", " + destination + ")...");
// Copy(source, destination);
// Console.WriteLine(" (" + source + ", " + destination + ").");
// return;
//}
System.Diagnostics.Process proc = null;
try
{
//Console.WriteLine("Executing cosmos " + string.Format(cosmosAppendCmdArgs, source, destination));
proc = Cosmos.CosmosExec(string.Format(Cosmos.cosmosAppendCmdArgs, source, destination));
using (StreamReader sr = proc.StandardOutput)
{
try
{
sr.ReadToEnd();
proc.WaitForExit();
}
catch
{
// ignore...
}
}
if (proc.ExitCode != 0)
{
//Console.WriteLine("bad exit code: " + proc.ExitCode);
throw new Exception();
}
}
catch
{
if (proc != null)
{
proc.Close();
proc = null;
}
if (!Cosmos.FileExists(destination))
{
//Console.WriteLine("Copy(" + source + ", " + destination + ")...");
//Copy(source, destination);
//Console.WriteLine(" (" + source + ", " + destination + ").");
if (retryNoExist)
{
// make sure the file is written...
using (Stream os = new CosmosWriteStream(destination))
{
}
// should be 0 bytes.
// hopefully, no infinite loop here:
Append(source, destination, false);
return;
}
else
{
try
{
DeleteFile(destination);
}
catch
{
}
throw new IOException("Could not append '" + source + "' to '" + destination + "'");
}
}
else if (Cosmos.GetLength(source) == 0)
{
// nothing to do, then...
return;
}
throw new IOException("Could not append '" + source + "' to '" + destination + "'");
}
finally
{
if (proc != null)
{
proc.Close();
}
}
}
/// <summary>
/// Create a Cosmos stream that is the concatenation of other Cosmos streams.
/// </summary>
/// <remarks>
/// <p>
/// This should be an efficient operation, but it will leave the trailing extents incomplete.
/// </p>
/// <p>
/// Wildcard patterns are allowed.
/// </p>
/// </remarks>
/// <param name="sources">the name of the streams to concatenate</param>
/// <param name="destination">the name of the stream to create</param>
/// <exception cref="IOException">The concatenation could not be completed.</exception>
/// <exception cref="ArgumentException">Some sources are not cosmos stream names.</exception>
public static void Concatenate(string destination, params string[] sources)
{
//Console.WriteLine("Join:");
if (sources == null) sources = new string[0];
ArrayList expanded = null;
for (int i = 0; i < sources.Length; i++)
{
if (sources[i] == null || string.Compare(sources[i], 0, "cosmos://", 0, "cosmos://".Length, true) != 0)
{
throw new ArgumentException("Source is not a Cosmos stream name: " + sources[i], "sources");
}
if (sources[i].IndexOf('*') >= 0 || sources[i].IndexOf('?') >= 0 ||
sources[i].IndexOf("...") >= 0)
{
if (expanded == null)
{
expanded = new ArrayList();
for (int j = 0; j < i; j++)
{
expanded.Add(sources[j]);
}
}
// should share batch process: ***
expanded.AddRange(IOUtil.ExpandWildcards(sources[i]));
}
else
{
if (expanded != null) expanded.Add(sources[i]);
}
}
if (expanded != null)
{
sources = (string[])expanded.ToArray(typeof(string));
}
//for (int i = 0; i < sources.Length; i++)
//{
// if (!Cosmos.FileExists(sources[i]))
// {
// throw new IOException("Cosmos stream to join not found: " + sources[i]);
// }
//}
//Console.WriteLine("Join:Exists");
//Overwrite(destination, false);
try
{
// should share batch process: ***
DeleteFile(destination);
}
catch
{
// ignore
}
// make sure the file is written...
using (Stream os = new CosmosWriteStream(destination))
{
}
// should be 0 bytes.
//Console.WriteLine("Join:Init[" + sources.Length + "]");
for (int i = 0; i < sources.Length; i++)
{
string source = sources[i];
try
{
//Console.Write(".");
// should share batch process: ***
Append(source, destination);
//Console.Write(",");
}
catch
{
try
{
// should share batch process: ***
DeleteFile(destination);
}
catch
{
// ignore
}
throw new IOException("Could not concatenate '" + source + "' to '" + destination + "'");
}
}
//Console.WriteLine("Join:Done.");
}
/// <summary>
/// Create a Cosmos directory.
/// </summary>
/// <param name="path">the directory name to create</param>
/// <exception cref="IOException">The directory cannot be created.</exception>
public static void CreateDirectory(string path)
{
if (path == null || path.Length == 0) throw new IOException("Cannot create directory for empty path");
path = path.Replace('\\', '/');
try
{
if (path[path.Length - 1] != '/') path = path + "/";
using (CosmosWriteStream cw = new CosmosWriteStream(path + ".dir"))
{
cw.Flush();
cw.Close();
}
}
catch
{
}
}
