/// <summary>This is the last method to be called when using external signatures.</summary>
/// <remarks>
/// This is the last method to be called when using external signatures. The general sequence is:
/// preClose(), getDocumentBytes() and close().
/// <p>
/// update is a PdfDictionary that must have exactly the
/// same keys as the ones provided in
/// <see cref="PreClose(System.Collections.Generic.IDictionary{K, V})"/>
/// .
/// </remarks>
/// <param name="update">
/// a PdfDictionary with the key/value that will fill the holes defined
/// in
/// <see cref="PreClose(System.Collections.Generic.IDictionary{K, V})"/>
/// </param>
/// <exception cref="System.IO.IOException">on error</exception>
protected internal virtual void Close(PdfDictionary update)
{
try {
if (!preClosed)
{
throw new PdfException(PdfException.DocumentMustBePreClosed);
}
MemoryStream bous = new MemoryStream();
PdfOutputStream os = new PdfOutputStream(bous);
foreach (PdfName key in update.KeySet())
{
PdfObject obj = update.Get(key);
PdfLiteral lit = exclusionLocations.Get(key);
if (lit == null)
{
throw new ArgumentException("The key didn't reserve space in preclose");
}
bous.JReset();
os.Write(obj);
if (bous.Length > lit.GetBytesCount())
{
throw new ArgumentException("The key is too big");
}
if (tempFile == null)
{
System.Array.Copy(bous.ToArray(), 0, bout, (int)lit.GetPosition(), bous.Length);
}
else
{
raf.Seek(lit.GetPosition());
raf.Write(bous.ToArray(), 0, (int)bous.Length);
}
}
if (update.Size() != exclusionLocations.Count)
{
throw new ArgumentException("The update dictionary has less keys than required");
}
if (tempFile == null)
{
originalOS.Write(bout, 0, bout.Length);
}
else
{
if (originalOS != null)
{
raf.Seek(0);
long length = raf.Length;
byte[] buf = new byte[8192];
while (length > 0)
{
int r = raf.JRead(buf, 0, (int)Math.Min((long)buf.Length, length));
if (r < 0)
{
throw new EndOfStreamException("unexpected eof");
}
originalOS.Write(buf, 0, r);
length -= r;
}
}
}
}
finally {
if (tempFile != null)
{
raf.Close();
if (originalOS != null)
{
tempFile.Delete();
}
}
if (originalOS != null)
{
try {
originalOS.Close();
}
catch (Exception) {
}
}
}
}