/// <summary>
/// Decompresses the provided data, returning the inflated result.
/// </summary>
/// <param name="data">the deflated picture data.</param>
/// <returns>the inflated picture data.</returns>
private static byte[] InflatePictureData(byte[] data)
{
using (MemoryStream out1 = new MemoryStream())
{
try
{
using (MemoryStream ms = new MemoryStream(data))
{
using (ZlibStream in1 = new ZlibStream(ms, CompressionMode.Decompress))
{
byte[] buf = new byte[4096];
int ReadBytes;
while ((ReadBytes = in1.Read(buf, 0, buf.Length)) > 0)
{
out1.Write(buf, 0, ReadBytes);
}
return out1.ToArray();
}
}
}
catch (IOException e)
{
log.Log(POILogger.INFO, "Possibly corrupt compression or non-compressed data", e);
return data;
}
}
}
/// <summary>
/// This version of dump is a translation from the open office escher dump routine.
/// </summary>
/// <param name="maxLength">The number of bytes to Read</param>
/// <param name="in1">An input stream to Read from.</param>
public void DumpOld(long maxLength, Stream in1)
{
long remainingBytes = maxLength;
short options; // 4 bits for the version and 12 bits for the instance
short recordId;
int recordBytesRemaining; // including enclosing records
StringBuilder stringBuf = new StringBuilder();
short nDumpSize;
String recordName;
bool atEOF = false;
while (!atEOF && (remainingBytes > 0))
{
stringBuf = new StringBuilder();
options = LittleEndian.ReadShort(in1);
recordId = LittleEndian.ReadShort(in1);
recordBytesRemaining = LittleEndian.ReadInt(in1);
remainingBytes -= 2 + 2 + 4;
switch (recordId)
{
case unchecked((short)0xF000):
recordName = "MsofbtDggContainer";
break;
case unchecked((short)0xF006):
recordName = "MsofbtDgg";
break;
case unchecked((short)0xF016):
recordName = "MsofbtCLSID";
break;
case unchecked((short)0xF00B):
recordName = "MsofbtOPT";
break;
case unchecked((short)0xF11A):
recordName = "MsofbtColorMRU";
break;
case unchecked((short)0xF11E):
recordName = "MsofbtSplitMenuColors";
break;
case unchecked((short)0xF001):
recordName = "MsofbtBstoreContainer";
break;
case unchecked((short)0xF007):
recordName = "MsofbtBSE";
break;
case unchecked((short)0xF002):
recordName = "MsofbtDgContainer";
break;
case unchecked((short)0xF008):
recordName = "MsofbtDg";
break;
case unchecked((short)0xF118):
recordName = "MsofbtRegroupItem";
break;
case unchecked((short)0xF120):
recordName = "MsofbtColorScheme";
break;
case unchecked((short)0xF003):
recordName = "MsofbtSpgrContainer";
break;
case unchecked((short)0xF004):
recordName = "MsofbtSpContainer";
break;
case unchecked((short)0xF009):
recordName = "MsofbtSpgr";
break;
case unchecked((short)0xF00A):
recordName = "MsofbtSp";
break;
case unchecked((short)0xF00C):
recordName = "MsofbtTextbox";
break;
case unchecked((short)0xF00D):
recordName = "MsofbtClientTextbox";
break;
case unchecked((short)0xF00E):
recordName = "MsofbtAnchor";
break;
case unchecked((short)0xF00F):
recordName = "MsofbtChildAnchor";
break;
case unchecked((short)0xF010):
recordName = "MsofbtClientAnchor";
break;
case unchecked((short)0xF011):
recordName = "MsofbtClientData";
break;
case unchecked((short)0xF11F):
recordName = "MsofbtOleObject";
break;
case unchecked((short)0xF11D):
recordName = "MsofbtDeletedPspl";
break;
case unchecked((short)0xF005):
recordName = "MsofbtSolverContainer";
break;
case unchecked((short)0xF012):
recordName = "MsofbtConnectorRule";
break;
case unchecked((short)0xF013):
recordName = "MsofbtAlignRule";
break;
case unchecked((short)0xF014):
recordName = "MsofbtArcRule";
break;
case unchecked((short)0xF015):
recordName = "MsofbtClientRule";
break;
case unchecked((short)0xF017):
recordName = "MsofbtCalloutRule";
break;
case unchecked((short)0xF119):
recordName = "MsofbtSelection";
break;
case unchecked((short)0xF122):
recordName = "MsofbtUDefProp";
break;
default:
if (recordId >= unchecked((short)0xF018) && recordId <= unchecked((short)0xF117))
recordName = "MsofbtBLIP";
else if ((options & (short)0x000F) == (short)0x000F)
recordName = "UNKNOWN container";
else
recordName = "UNKNOWN ID";
break;
}
stringBuf.Append(" ");
stringBuf.Append(HexDump.ToHex(recordId));
stringBuf.Append(" ").Append(recordName).Append(" [");
stringBuf.Append(HexDump.ToHex(options));
stringBuf.Append(',');
stringBuf.Append(HexDump.ToHex(recordBytesRemaining));
stringBuf.Append("] instance: ");
stringBuf.Append(HexDump.ToHex(((short)(options >> 4))));
Console.WriteLine(stringBuf.ToString());
if (recordId == (unchecked((short)0xF007)) && 36 <= remainingBytes && 36 <= recordBytesRemaining)
{ // BSE, FBSE
// ULONG nP = pIn->GetRecPos();
byte n8;
// short n16;
// int n32;
stringBuf = new StringBuilder(" btWin32: ");
n8 = (byte)in1.ReadByte();
stringBuf.Append(HexDump.ToHex(n8));
stringBuf.Append(GetBlipType(n8));
stringBuf.Append(" btMacOS: ");
n8 = (byte)in1.ReadByte();
stringBuf.Append(HexDump.ToHex(n8));
stringBuf.Append(GetBlipType(n8));
Console.WriteLine(stringBuf.ToString());
Console.WriteLine(" rgbUid:");
HexDump.Dump(in1, 0, 16);
Console.Write(" tag: ");
OutHex(2, in1);
Console.WriteLine();
Console.Write(" size: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" cRef: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" offs: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" usage: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" cbName: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" unused2: ");
OutHex(4, in1);
Console.WriteLine();
Console.Write(" unused3: ");
OutHex(4, in1);
Console.WriteLine();
// subtract the number of bytes we've Read
remainingBytes -= 36;
//n -= pIn->GetRecPos() - nP;
recordBytesRemaining = 0; // loop to MsofbtBLIP
}
else if (recordId == unchecked((short)0xF010) && 0x12 <= remainingBytes && 0x12 <= recordBytesRemaining)
{ // ClientAnchor
//ULONG nP = pIn->GetRecPos();
// short n16;
Console.Write(" Flag: ");
OutHex(2, in1);
Console.WriteLine();
Console.Write(" Col1: ");
OutHex(2, in1);
Console.Write(" dX1: ");
OutHex(2, in1);
Console.Write(" Row1: ");
OutHex(2, in1);
Console.Write(" dY1: ");
OutHex(2, in1);
Console.WriteLine();
Console.Write(" Col2: ");
OutHex(2, in1);
Console.Write(" dX2: ");
OutHex(2, in1);
Console.Write(" Row2: ");
OutHex(2, in1);
Console.Write(" dY2: ");
OutHex(2, in1);
Console.WriteLine();
remainingBytes -= 18;
recordBytesRemaining -= 18;
}
else if (recordId == unchecked((short)0xF00B) || recordId == unchecked((short)0xF122))
{ // OPT
int nComplex = 0;
Console.WriteLine(" PROPID VALUE");
while (recordBytesRemaining >= 6 + nComplex && remainingBytes >= 6 + nComplex)
{
short n16;
int n32;
n16 = LittleEndian.ReadShort(in1);
n32 = LittleEndian.ReadInt(in1);
recordBytesRemaining -= 6;
remainingBytes -= 6;
Console.Write(" ");
Console.Write(HexDump.ToHex(n16));
Console.Write(" (");
int propertyId = n16 & (short)0x3FFF;
Console.Write(" " + propertyId);
if ((n16 & unchecked((short)0x8000)) == 0)
{
if ((n16 & (short)0x4000) != 0)
Console.Write(", fBlipID");
Console.Write(") ");
Console.Write(HexDump.ToHex(n32));
if ((n16 & (short)0x4000) == 0)
{
Console.Write(" (");
Console.Write(Dec1616(n32));
Console.Write(')');
Console.Write(" {" + PropertyName((short)propertyId) + "}");
}
Console.WriteLine();
}
else
{
Console.Write(", fComplex) ");
Console.Write(HexDump.ToHex(n32));
Console.Write(" - Complex prop len");
Console.WriteLine(" {" + PropertyName((short)propertyId) + "}");
nComplex += n32;
}
}
// complex property data
while ((nComplex & remainingBytes) > 0)
{
nDumpSize = (nComplex > (int)remainingBytes) ? (short)remainingBytes : (short)nComplex;
HexDump.Dump(in1, 0, nDumpSize);
nComplex -= nDumpSize;
recordBytesRemaining -= nDumpSize;
remainingBytes -= nDumpSize;
}
}
else if (recordId == (unchecked((short)0xF012)))
{
Console.Write(" Connector rule: ");
Console.Write(LittleEndian.ReadInt(in1));
Console.Write(" ShapeID A: ");
Console.Write(LittleEndian.ReadInt(in1));
Console.Write(" ShapeID B: ");
Console.Write(LittleEndian.ReadInt(in1));
Console.Write(" ShapeID connector: ");
Console.Write(LittleEndian.ReadInt(in1));
Console.Write(" Connect pt A: ");
Console.Write(LittleEndian.ReadInt(in1));
Console.Write(" Connect pt B: ");
Console.WriteLine(LittleEndian.ReadInt(in1));
recordBytesRemaining -= 24;
remainingBytes -= 24;
}
else if (recordId >= unchecked((short)0xF018) && recordId < unchecked((short)0xF117))
{
Console.WriteLine(" Secondary UID: ");
HexDump.Dump(in1, 0, 16);
Console.WriteLine(" Cache of size: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Boundary top: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Boundary left: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Boundary width: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Boundary height: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" X: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Y: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Cache of saved size: " + HexDump.ToHex(LittleEndian.ReadInt(in1)));
Console.WriteLine(" Compression Flag: " + HexDump.ToHex((byte)in1.ReadByte()));
Console.WriteLine(" Filter: " + HexDump.ToHex((byte)in1.ReadByte()));
Console.WriteLine(" Data (after decompression): ");
recordBytesRemaining -= 34 + 16;
remainingBytes -= 34 + 16;
nDumpSize = (recordBytesRemaining > (int)remainingBytes) ? (short)remainingBytes : (short)recordBytesRemaining;
byte[] buf = new byte[nDumpSize];
int Read = in1.Read(buf,0,buf.Length);
while (Read != -1 && Read < nDumpSize)
Read += in1.Read(buf, Read, buf.Length);
using (MemoryStream bin = new MemoryStream(buf))
{
using (ZlibStream in2 = new ZlibStream(bin, CompressionMode.Decompress, false))
{
int bytesToDump = -1;
HexDump.Dump(in2, 0, bytesToDump);
recordBytesRemaining -= nDumpSize;
remainingBytes -= nDumpSize;
}
}
}
bool isContainer = (options & (short)0x000F) == (short)0x000F;
if (isContainer && remainingBytes >= 0)
{ // Container
if (recordBytesRemaining <= (int)remainingBytes)
Console.WriteLine(" completed within");
else
Console.WriteLine(" continued elsewhere");
}
else if (remainingBytes >= 0) // -> 0x0000 ... 0x0FFF
{
nDumpSize = (recordBytesRemaining > (int)remainingBytes) ? (short)remainingBytes : (short)recordBytesRemaining;
if (nDumpSize != 0)
{
HexDump.Dump(in1, 0, nDumpSize);
remainingBytes -= nDumpSize;
}
}
else
Console.WriteLine(" >> OVERRUN <<");
}
}
/// <summary>
/// Decompresses the specified data.
/// </summary>
/// <param name="data">The compressed byte array.</param>
/// <param name="pos">The starting position into the byte array.</param>
/// <param name="Length">The number of compressed bytes to decompress.</param>
/// <returns>An uncompressed byte array</returns>
public static byte[] Decompress(byte[] data, int pos, int Length)
{
byte[] compressedData = new byte[Length];
Array.Copy(data, pos + 50, compressedData, 0, Length);
using (MemoryStream ms = new MemoryStream(compressedData))
{
using (ZlibStream inflaterInputStream = new ZlibStream(ms, CompressionMode.Decompress))
{
using (MemoryStream out1 = new MemoryStream())
{
int c;
try
{
while ((c = inflaterInputStream.ReadByte()) != -1)
out1.WriteByte((byte)c);
return out1.ToArray();
}
catch (IOException e)
{
throw new RecordFormatException(e.ToString());
}
}
}
}
}
/// <summary>
/// Compress the contents of the provided array
/// </summary>
/// <param name="data">An uncompressed byte array</param>
/// <returns></returns>
public static byte[] Compress(byte[] data)
{
using (MemoryStream out1 = new MemoryStream())
{
ZlibStream deflaterOutputStream = new ZlibStream(out1, CompressionMode.Compress);
try
{
//for (int i = 0; i < data.Length; i++)
//deflaterOutputStream.WriteByte(data[i]);
deflaterOutputStream.Write(data, 0, data.Length); //Tony Qu changed the code
return out1.ToArray();
}
catch (IOException e)
{
throw new RecordFormatException(e.ToString());
}
finally
{
out1.Close();
if (deflaterOutputStream != null)
{
deflaterOutputStream.Close();
}
}
}
}
/// <summary>
/// Uncompress a ZLIB-compressed byte array into a byte array.
/// </summary>
///
/// <seealso cref="ZlibStream.CompressBuffer(byte[])"/>
/// <seealso cref="ZlibStream.UncompressString(byte[])"/>
///
/// <param name="compressed">
/// A buffer containing ZLIB-compressed data.
/// </param>
///
/// <returns>The data in uncompressed form</returns>
public static byte[] UncompressBuffer(byte[] compressed)
{
using (var input = new MemoryStream(compressed))
{
Stream decompressor =
new ZlibStream( input, CompressionMode.Decompress );
return ZlibBaseStream.UncompressBuffer(compressed, decompressor);
}
}
/// <summary>
/// Compress a byte array into a new byte array using ZLIB.
/// </summary>
///
/// <remarks>
/// Uncompress it with <see cref="ZlibStream.UncompressBuffer(byte[])"/>.
/// </remarks>
///
/// <seealso cref="ZlibStream.CompressString(string)"/>
/// <seealso cref="ZlibStream.UncompressBuffer(byte[])"/>
///
/// <param name="b">
/// A buffer to compress.
/// </param>
///
/// <returns>The data in compressed form</returns>
public static byte[] CompressBuffer(byte[] b)
{
using (var ms = new MemoryStream())
{
Stream compressor =
new ZlibStream( ms, CompressionMode.Compress, CompressionLevel.BestCompression );
ZlibBaseStream.CompressBuffer(b, compressor);
return ms.ToArray();
}
}
