/// <summary> Copy contents of a directory src to a directory dest.
/// If a file in src already exists in dest then the
/// one in dest will be blindly overwritten.
///
/// <p/><b>NOTE:</b> the source directory cannot change
/// while this method is running. Otherwise the results
/// are undefined and you could easily hit a
/// FileNotFoundException.
///
/// <p/><b>NOTE:</b> this method only copies files that look
/// like index files (ie, have extensions matching the
/// known extensions of index files).
///
/// </summary>
/// <param name="src">source directory
/// </param>
/// <param name="dest">destination directory
/// </param>
/// <param name="closeDirSrc">if <c>true</c>, call <see cref="Close()" /> method on source directory
/// </param>
/// <throws> IOException </throws>
public static void Copy(Directory src, Directory dest, bool closeDirSrc)
{
System.String[] files = src.ListAll();
IndexFileNameFilter filter = IndexFileNameFilter.Filter;
byte[] buf = new byte[BufferedIndexOutput.BUFFER_SIZE];
for (int i = 0; i < files.Length; i++)
{
if (!filter.Accept(null, files[i]))
{
continue;
}
IndexOutput os = null;
IndexInput is_Renamed = null;
try
{
// create file in dest directory
os = dest.CreateOutput(files[i]);
// read current file
is_Renamed = src.OpenInput(files[i]);
// and copy to dest directory
long len = is_Renamed.Length();
long readCount = 0;
while (readCount < len)
{
int toRead = readCount + BufferedIndexOutput.BUFFER_SIZE > len?(int)(len - readCount):BufferedIndexOutput.BUFFER_SIZE;
is_Renamed.ReadBytes(buf, 0, toRead);
os.WriteBytes(buf, toRead);
readCount += toRead;
}
}
finally
{
// graceful cleanup
try
{
if (os != null)
{
os.Close();
}
}
finally
{
if (is_Renamed != null)
{
is_Renamed.Close();
}
}
}
}
if (closeDirSrc)
{
src.Close();
}
}
public CompoundFileReader(Directory dir, System.String name, int readBufferSize)
{
directory = dir;
fileName = name;
this.readBufferSize = readBufferSize;
bool success = false;
try
{
stream = dir.OpenInput(name, readBufferSize);
// read the directory and init files
int count = stream.ReadVInt();
FileEntry entry = null;
for (int i = 0; i < count; i++)
{
long offset = stream.ReadLong();
System.String id = stream.ReadString();
if (entry != null)
{
// set length of the previous entry
entry.length = offset - entry.offset;
}
entry = new FileEntry {offset = offset};
entries[id] = entry;
}
// set the length of the final entry
if (entry != null)
{
entry.length = stream.Length() - entry.offset;
}
success = true;
}
finally
{
if (!success && (stream != null))
{
try
{
stream.Close();
}
catch (System.IO.IOException)
{
}
}
}
}
