// methods overriding some methods in PdfObject
/**
* Returns the PDF representation of this <CODE>PdfString</CODE>.
*
* @return an array of <CODE>byte</CODE>s
*/
public override void ToPdf(PdfWriter writer, Stream os)
{
byte[] b = GetBytes();
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
b = (byte[])bytes.Clone();
crypto.PrepareKey();
crypto.EncryptRC4(b);
}
if (hexWriting)
{
ByteBuffer buf = new ByteBuffer();
buf.Append('<');
int len = b.Length;
for (int k = 0; k < len; ++k)
{
buf.AppendHex(b[k]);
}
buf.Append('>');
os.Write(buf.ToByteArray(), 0, buf.Size);
}
else
{
b = PdfContentByte.EscapeString(b);
os.Write(b, 0, b.Length);
}
}
internal void Decrypt(PdfReader reader)
{
PdfEncryption decrypt = reader.Decrypt;
if (decrypt != null)
{
originalValue = value;
decrypt.SetHashKey(objNum, objGen);
decrypt.PrepareKey();
bytes = PdfEncodings.ConvertToBytes(value, null);
decrypt.EncryptRC4(bytes);
value = PdfEncodings.ConvertToString(bytes, null);
}
}
public override void ToPdf(PdfWriter writer, Stream os)
{
if (inputStream != null && compressed)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
SuperToPdf(writer, os);
os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
crypto.PrepareKey();
}
if (inputStream != null)
{
rawLength = 0;
ZDeflaterOutputStream def = null;
OutputStreamCounter osc = new OutputStreamCounter(os);
Stream fout = osc;
if (crypto != null)
{
fout = new PdfEncryptionStream(fout, crypto);
}
if (compressed)
{
fout = def = new ZDeflaterOutputStream(fout);
}
byte[] buf = new byte[0x10000];
while (true)
{
int n = inputStream.Read(buf, 0, buf.Length);
if (n <= 0)
{
break;
}
fout.Write(buf, 0, n);
rawLength += n;
}
if (def != null)
{
def.Finish();
}
inputStreamLength = osc.Counter;
}
else
{
if (crypto == null)
{
if (streamBytes != null)
{
streamBytes.WriteTo(os);
}
else
{
os.Write(bytes, 0, bytes.Length);
}
}
else
{
byte[] b;
if (streamBytes != null)
{
b = streamBytes.ToArray();
crypto.EncryptRC4(b);
}
else
{
b = new byte[bytes.Length];
crypto.EncryptRC4(bytes, b);
}
os.Write(b, 0, b.Length);
}
}
os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
}
public override void ToPdf(PdfWriter writer, Stream os)
{
SuperToPdf(writer, os);
os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
if (length > 0)
{
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (offset < 0)
{
if (crypto == null)
{
os.Write(bytes, 0, bytes.Length);
}
else
{
crypto.PrepareKey();
byte[] buf = new byte[length];
crypto.EncryptRC4(bytes, buf);
os.Write(buf, 0, buf.Length);
}
}
else
{
byte[] buf = new byte[Math.Min(length, 4092)];
RandomAccessFileOrArray file = writer.GetReaderFile(reader);
bool isOpen = file.IsOpen();
try {
file.Seek(offset);
int size = length;
//added by ujihara for decryption
PdfEncryption decrypt = reader.Decrypt;
if (decrypt != null)
{
decrypt.SetHashKey(objNum, objGen);
decrypt.PrepareKey();
}
if (crypto != null)
{
crypto.PrepareKey();
}
while (size > 0)
{
int r = file.Read(buf, 0, Math.Min(size, buf.Length));
size -= r;
if (decrypt != null)
{
decrypt.EncryptRC4(buf, 0, r); //added by ujihara for decryption
}
if (crypto != null)
{
crypto.EncryptRC4(buf, 0, r);
}
os.Write(buf, 0, r);
}
}
finally {
if (!isOpen)
{
try{ file.Close(); }catch {}
}
}
}
}
os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
}
