// Token: 0x060019AF RID: 6575 RVA: 0x000CAF5C File Offset: 0x000C915C
private bool FlushCodes(int flags)
{
this.writeBuffer[this.writeCurrent++] = (byte)flags;
this.codesCurrent = 0;
this.flushCodes = true;
this.crc = CRC32.ComputeCRC(this.crc, (uint)flags);
return(this.FlushCodes());
}
private void SlowLoop()
{
this.expectedCount += this.readCurrent - this.readStart;
while (this.readCurrent != this.readEnd && this.writeCurrent != this.writeEnd)
{
if (this.numFlags == 0)
{
this.flags = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)this.flags);
this.numFlags = 8;
}
if (this.readCurrent != this.readEnd)
{
if ((this.flags & 1) != 0)
{
if (this.readEnd - this.readCurrent < 2)
{
this.match = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)this.match);
this.pointerRead = 1;
break;
}
this.match = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)this.match);
int num = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)num);
this.match = (this.match << 8 | num);
this.matchLength = (this.match & 15) + 2;
this.match >>= 4;
if (this.match == (this.windowCurrent & 4095))
{
this.pointerRead = 2;
break;
}
if (!this.ExpandMatchWithOverflow())
{
this.pointerRead = 2;
break;
}
}
else
{
int num = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)num);
this.AddRawByte(num);
}
this.numFlags--;
this.flags >>= 1;
}
}
this.expectedCount -= this.readCurrent - this.readStart;
}
// Token: 0x060019B0 RID: 6576 RVA: 0x000CAFAC File Offset: 0x000C91AC
private bool FlushCodes()
{
while (this.writeCurrent != this.writeEnd)
{
byte b = this.codes[this.codesCurrent++];
this.writeBuffer[this.writeCurrent++] = b;
this.crc = CRC32.ComputeCRC(this.crc, (uint)b);
if (this.codesCurrent == this.codesEnd)
{
this.flushCodes = false;
this.codesEnd = 0;
return(true);
}
}
return(false);
}
private void FastLoop()
{
int num = this.numFlags;
int num2 = this.flags;
int readCurrent = this.readCurrent;
byte[] readBuffer = this.readBuffer;
uint seed = this.crc;
this.readEnd -= 3;
this.writeEnd -= 17;
this.expectedCount += readCurrent - this.readStart;
int num3;
int num5;
for (;;)
{
if (num == 0)
{
num2 = (int)readBuffer[readCurrent++];
seed = CRC32.ComputeCRC(seed, (uint)num2);
num = 8;
}
if ((num2 & 1) != 0)
{
num3 = (int)readBuffer[readCurrent++];
seed = CRC32.ComputeCRC(seed, (uint)num3);
int num4 = (int)readBuffer[readCurrent++];
seed = CRC32.ComputeCRC(seed, (uint)num4);
num3 = (num3 << 8 | num4);
num5 = (num3 & 15) + 2;
num3 >>= 4;
if (num3 == (this.windowCurrent & 4095))
{
break;
}
this.ExpandMatch(num3, num5);
}
else
{
int num4 = (int)readBuffer[readCurrent++];
seed = CRC32.ComputeCRC(seed, (uint)num4);
this.AddRawByte(num4);
}
num--;
num2 >>= 1;
if (readCurrent > this.readEnd || this.writeCurrent > this.writeEnd)
{
goto IL_128;
}
}
this.match = num3;
this.matchLength = num5;
this.pointerRead = 2;
IL_128:
this.crc = seed;
this.readCurrent = readCurrent;
this.readEnd += 3;
this.writeEnd += 17;
this.expectedCount -= this.readCurrent - this.readStart;
this.numFlags = num;
this.flags = num2;
}
public void Run()
{
if (this.endOfFile)
{
return;
}
if (this.writeCurrent == this.writeEnd && !base.GetOutputSpace())
{
return;
}
if (this.readCurrent == this.readEnd)
{
if (!this.inputEndOfFile && !base.ReadMoreData())
{
return;
}
if (this.inputEndOfFile && (this.logicalEOS || this.numFlags == 0 || (this.flags & 1) == 0 || this.pointerRead < 2))
{
this.endOfFile = true;
if (this.pullSink != null)
{
this.pullSink.ReportEndOfFile();
}
else
{
this.pushSink.Flush();
}
if (!this.uncompressed && !this.logicalEOS)
{
throw new TextConvertersException("data truncated");
}
return;
}
else
{
if (this.logicalEOS && this.readCurrent != this.readEnd)
{
this.readCurrent = this.readEnd;
base.ReportRead();
return;
}
if (!this.headerRead)
{
byte[] readBuffer;
int num2;
if (this.headerBuffer != null || this.readEnd - this.readCurrent < 16)
{
int num = Math.Min(16 - this.headerBufferCurrent, this.readEnd - this.readCurrent);
if (this.headerBuffer == null)
{
this.headerBuffer = new byte[16];
}
Buffer.BlockCopy(this.readBuffer, this.readCurrent, this.headerBuffer, this.headerBufferCurrent, num);
this.readCurrent += num;
this.headerBufferCurrent += num;
if (this.headerBufferCurrent != 16)
{
base.ReportRead();
return;
}
readBuffer = this.headerBuffer;
num2 = 0;
}
else
{
readBuffer = this.readBuffer;
num2 = this.readCurrent;
this.readCurrent += 16;
}
uint num3 = BitConverter.ToUInt32(readBuffer, num2 + 8);
this.expectedCount = BitConverter.ToInt32(readBuffer, num2) - 12;
if (num3 == 1095517517U)
{
this.uncompressed = true;
}
if ((num3 != 1095517517U && num3 != 1967544908U) || this.expectedCount > 2147483647 || this.expectedCount < 0)
{
this.readCurrent = this.readEnd;
throw new TextConvertersException("invalid compressed RTF header");
}
if (this.resultFeedback != null)
{
this.resultFeedback.Set(ConfigParameter.RtfCompressionMode, this.uncompressed ? RtfCompressionMode.Uncompressed : RtfCompressionMode.Compressed);
}
this.expectedCrc = BitConverter.ToUInt32(readBuffer, num2 + 12);
this.headerRead = true;
}
}
}
if (this.uncompressed)
{
int num4 = Math.Min(this.readEnd - this.readCurrent, this.writeEnd - this.writeCurrent);
Buffer.BlockCopy(this.readBuffer, this.readCurrent, this.writeBuffer, this.writeCurrent, num4);
this.readCurrent += num4;
this.writeCurrent += num4;
base.ReportRead();
base.FlushOutput();
return;
}
if (this.numFlags != 0 && (this.flags & 1) != 0 && this.pointerRead != 0)
{
if (this.pointerRead == 1)
{
int num5 = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)num5);
this.match = (this.match << 8 | num5);
this.matchLength = (this.match & 15) + 2;
this.match >>= 4;
this.pointerRead++;
this.expectedCount--;
}
if (this.match == (this.windowCurrent & 4095))
{
while (this.expectedCount > 0 && this.readCurrent != this.readEnd)
{
int num5 = (int)this.readBuffer[this.readCurrent++];
this.crc = CRC32.ComputeCRC(this.crc, (uint)num5);
this.expectedCount--;
}
this.readCurrent = this.readEnd;
if (this.expectedCount <= 0)
{
this.logicalEOS = true;
if (this.crc != this.expectedCrc)
{
throw new TextConvertersException("CRC does not match, data corrupted");
}
if (this.pullSource != null)
{
this.endOfFile = true;
this.pullSink.ReportEndOfFile();
return;
}
if (this.expectedCount < 0)
{
throw new TextConvertersException("expected count in header is smaller than actual, data corrupted");
}
}
else if (this.inputEndOfFile)
{
this.endOfFile = true;
throw new TextConvertersException("data truncated");
}
}
else if (this.ExpandMatchWithOverflow())
{
this.numFlags--;
this.flags >>= 1;
this.pointerRead = 0;
}
}
if (!this.disableFastLoop && this.readCurrent + 3 <= this.readEnd && this.writeCurrent + 17 <= this.writeEnd)
{
this.FastLoop();
}
if (this.pointerRead == 0)
{
this.SlowLoop();
}
base.ReportRead();
if (this.pushSink == null || this.writeCurrent + 17 > this.writeEnd || this.logicalEOS)
{
base.FlushOutput();
}
}