[System.Security.SecurityCritical] // auto-generated
internal override unsafe int GetChars(byte *bytes, int byteCount,
char *chars, int charCount, DecoderNLS decoder)
{
// Just need to ASSERT, this is called by something else internal that checked parameters already
Contract.Assert(bytes != null, "[SBCSCodePageEncoding.GetChars]bytes is null");
Contract.Assert(byteCount >= 0, "[SBCSCodePageEncoding.GetChars]byteCount is negative");
Contract.Assert(chars != null, "[SBCSCodePageEncoding.GetChars]chars is null");
Contract.Assert(charCount >= 0, "[SBCSCodePageEncoding.GetChars]charCount is negative");
CheckMemorySection();
// See if we have best fit
bool bUseBestFit = false;
// Do it fast way if using ? replacement or best fit fallbacks
byte *byteEnd = bytes + byteCount;
byte *byteStart = bytes;
char *charStart = chars;
// Only need decoder fallback buffer if not using default replacement fallback or best fit fallback.
DecoderReplacementFallback fallback = null;
if (decoder == null)
{
fallback = this.DecoderFallback as DecoderReplacementFallback;
bUseBestFit = this.DecoderFallback.IsMicrosoftBestFitFallback;
}
else
{
fallback = decoder.Fallback as DecoderReplacementFallback;
bUseBestFit = decoder.Fallback.IsMicrosoftBestFitFallback;
Contract.Assert(!decoder.m_throwOnOverflow || !decoder.InternalHasFallbackBuffer ||
decoder.FallbackBuffer.Remaining == 0,
"[SBCSCodePageEncoding.GetChars]Expected empty fallback buffer at start");
}
if (bUseBestFit || (fallback != null && fallback.MaxCharCount == 1))
{
// Try it the fast way
char replacementChar;
if (fallback == null)
{
replacementChar = '?'; // Best fit alwasy has ? for fallback for SBCS
}
else
{
replacementChar = fallback.DefaultString[0];
}
// Need byteCount chars, otherwise too small buffer
if (charCount < byteCount)
{
// Need at least 1 output byte, throw if must throw
ThrowCharsOverflow(decoder, charCount < 1);
// Not throwing, use what we can
byteEnd = bytes + charCount;
}
// Quick loop, just do '?' replacement because we don't have fallbacks for decodings.
while (bytes < byteEnd)
{
char c;
if (bUseBestFit)
{
if (arrayBytesBestFit == null)
{
ReadBestFitTable();
}
c = arrayBytesBestFit[*bytes];
}
else
{
c = mapBytesToUnicode[*bytes];
}
bytes++;
if (c == UNKNOWN_CHAR)
{
// This is an invalid byte in the ASCII encoding.
*chars = replacementChar;
}
else
{
*chars = c;
}
chars++;
}
// bytes & chars used are the same
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - byteStart);
}
return((int)(chars - charStart));
}
// Slower way's going to need a fallback buffer
DecoderFallbackBuffer fallbackBuffer = null;
byte[] byteBuffer = new byte[1];
char * charEnd = chars + charCount;
// Not quite so fast loop
while (bytes < byteEnd)
{
// Faster if don't use *bytes++;
char c = mapBytesToUnicode[*bytes];
bytes++;
// See if it was unknown
if (c == UNKNOWN_CHAR)
{
// Make sure we have a fallback buffer
if (fallbackBuffer == null)
{
if (decoder == null)
{
fallbackBuffer = this.DecoderFallback.CreateFallbackBuffer();
}
else
{
fallbackBuffer = decoder.FallbackBuffer;
}
fallbackBuffer.InternalInitialize(byteEnd - byteCount, charEnd);
}
// Use fallback buffer
Contract.Assert(bytes > byteStart,
"[SBCSCodePageEncoding.GetChars]Expected bytes to have advanced already (unknown byte)");
byteBuffer[0] = *(bytes - 1);
// Fallback adds fallback to chars, but doesn't increment chars unless the whole thing fits.
if (!fallbackBuffer.InternalFallback(byteBuffer, bytes, ref chars))
{
// May or may not throw, but we didn't get this byte
bytes--; // unused byte
fallbackBuffer.InternalReset(); // Didn't fall this back
ThrowCharsOverflow(decoder, bytes == byteStart); // throw?
break; // don't throw, but stop loop
}
}
else
{
// Make sure we have buffer space
if (chars >= charEnd)
{
Contract.Assert(bytes > byteStart,
"[SBCSCodePageEncoding.GetChars]Expected bytes to have advanced already (known byte)");
bytes--; // unused byte
ThrowCharsOverflow(decoder, bytes == byteStart); // throw?
break; // don't throw, but stop loop
}
*(chars) = c;
chars++;
}
}
// Might have had decoder fallback stuff.
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - byteStart);
}
// Expect Empty fallback buffer for GetChars
Contract.Assert(fallbackBuffer == null || fallbackBuffer.Remaining == 0,
"[SBCSEncoding.GetChars]Expected Empty fallback buffer at end");
return((int)(chars - charStart));
}
[System.Security.SecurityCritical] // auto-generated
internal override unsafe int GetChars(byte *bytes, int byteCount,
char *chars, int charCount, DecoderNLS decoder)
{
// Just need to ASSERT, this is called by something else internal that checked parameters already
Contract.Assert(bytes != null, "[ASCIIEncoding.GetChars]bytes is null");
Contract.Assert(byteCount >= 0, "[ASCIIEncoding.GetChars]byteCount is negative");
Contract.Assert(chars != null, "[ASCIIEncoding.GetChars]chars is null");
Contract.Assert(charCount >= 0, "[ASCIIEncoding.GetChars]charCount is negative");
// Do it fast way if using ? replacement fallback
byte *byteEnd = bytes + byteCount;
byte *byteStart = bytes;
char *charStart = chars;
// Note: ASCII doesn't do best fit, but we have to fallback if they use something > 0x7f
// Only need decoder fallback buffer if not using ? fallback.
// ASCII doesn't do best fit, so don't have to check for it, find out which decoder fallback we're using
DecoderReplacementFallback fallback = null;
if (decoder == null)
{
fallback = this.DecoderFallback as DecoderReplacementFallback;
}
else
{
fallback = decoder.Fallback as DecoderReplacementFallback;
Contract.Assert(!decoder.m_throwOnOverflow || !decoder.InternalHasFallbackBuffer ||
decoder.FallbackBuffer.Remaining == 0,
"[ASCIICodePageEncoding.GetChars]Expected empty fallback buffer");
}
if (fallback != null && fallback.MaxCharCount == 1)
{
// Try it the fast way
char replacementChar = fallback.DefaultString[0];
// Need byteCount chars, otherwise too small buffer
if (charCount < byteCount)
{
// Need at least 1 output byte, throw if must throw
ThrowCharsOverflow(decoder, charCount < 1);
// Not throwing, use what we can
byteEnd = bytes + charCount;
}
// Quick loop, just do '?' replacement because we don't have fallbacks for decodings.
while (bytes < byteEnd)
{
byte b = *(bytes++);
if (b >= 0x80)
{
// This is an invalid byte in the ASCII encoding.
*(chars++) = replacementChar;
}
else
{
*(chars++) = unchecked ((char)b);
}
}
// bytes & chars used are the same
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - byteStart);
}
return((int)(chars - charStart));
}
// Slower way's going to need a fallback buffer
DecoderFallbackBuffer fallbackBuffer = null;
byte[] byteBuffer = new byte[1];
char * charEnd = chars + charCount;
// Not quite so fast loop
while (bytes < byteEnd)
{
// Faster if don't use *bytes++;
byte b = *(bytes);
bytes++;
if (b >= 0x80)
{
// This is an invalid byte in the ASCII encoding.
if (fallbackBuffer == null)
{
if (decoder == null)
{
fallbackBuffer = this.DecoderFallback.CreateFallbackBuffer();
}
else
{
fallbackBuffer = decoder.FallbackBuffer;
}
fallbackBuffer.InternalInitialize(byteEnd - byteCount, charEnd);
}
// Use fallback buffer
byteBuffer[0] = b;
// Note that chars won't get updated unless this succeeds
if (!fallbackBuffer.InternalFallback(byteBuffer, bytes, ref chars))
{
// May or may not throw, but we didn't get this byte
Contract.Assert(bytes > byteStart || chars == charStart,
"[ASCIIEncoding.GetChars]Expected bytes to have advanced already (fallback case)");
bytes--; // unused byte
fallbackBuffer.InternalReset(); // Didn't fall this back
ThrowCharsOverflow(decoder, chars == charStart); // throw?
break; // don't throw, but stop loop
}
}
else
{
// Make sure we have buffer space
if (chars >= charEnd)
{
Contract.Assert(bytes > byteStart || chars == charStart,
"[ASCIIEncoding.GetChars]Expected bytes to have advanced already (normal case)");
bytes--; // unused byte
ThrowCharsOverflow(decoder, chars == charStart); // throw?
break; // don't throw, but stop loop
}
*(chars) = unchecked ((char)b);
chars++;
}
}
// Might have had decoder fallback stuff.
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - byteStart);
}
// Expect Empty fallback buffer for GetChars
Contract.Assert(fallbackBuffer == null || fallbackBuffer.Remaining == 0,
"[ASCIIEncoding.GetChars]Expected Empty fallback buffer");
return((int)(chars - charStart));
}
internal unsafe override int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS decoder)
{
byte *ptr = bytes + byteCount;
byte *ptr2 = bytes;
char *ptr3 = chars;
DecoderReplacementFallback decoderReplacementFallback;
if (decoder == null)
{
decoderReplacementFallback = (base.DecoderFallback as DecoderReplacementFallback);
}
else
{
decoderReplacementFallback = (decoder.Fallback as DecoderReplacementFallback);
}
if (decoderReplacementFallback != null && decoderReplacementFallback.MaxCharCount == 1)
{
char c = decoderReplacementFallback.DefaultString[0];
if (charCount < byteCount)
{
base.ThrowCharsOverflow(decoder, charCount < 1);
ptr = bytes + charCount;
}
while (bytes < ptr)
{
byte b = *(bytes++);
if (b >= 128)
{
*(chars++) = c;
}
else
{
*(chars++) = (char)b;
}
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)((long)(bytes - ptr2));
}
return((int)((long)(chars - ptr3)));
}
DecoderFallbackBuffer decoderFallbackBuffer = null;
byte[] array = new byte[1];
char * ptr4 = chars + charCount;
while (bytes < ptr)
{
byte b2 = *bytes;
bytes++;
if (b2 >= 128)
{
if (decoderFallbackBuffer == null)
{
if (decoder == null)
{
decoderFallbackBuffer = base.DecoderFallback.CreateFallbackBuffer();
}
else
{
decoderFallbackBuffer = decoder.FallbackBuffer;
}
decoderFallbackBuffer.InternalInitialize(ptr - byteCount, ptr4);
}
array[0] = b2;
if (!decoderFallbackBuffer.InternalFallback(array, bytes, ref chars))
{
bytes--;
decoderFallbackBuffer.InternalReset();
base.ThrowCharsOverflow(decoder, chars == ptr3);
break;
}
}
else
{
if (chars >= ptr4)
{
bytes--;
base.ThrowCharsOverflow(decoder, chars == ptr3);
break;
}
*chars = (char)b2;
chars++;
}
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)((long)(bytes - ptr2));
}
return((int)((long)(chars - ptr3)));
}
internal unsafe override int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS decoder)
{
base.CheckMemorySection();
byte *ptr = bytes + byteCount;
byte *ptr2 = bytes;
char *ptr3 = chars;
DecoderReplacementFallback decoderReplacementFallback;
bool isMicrosoftBestFitFallback;
if (decoder == null)
{
decoderReplacementFallback = (base.DecoderFallback as DecoderReplacementFallback);
isMicrosoftBestFitFallback = base.DecoderFallback.IsMicrosoftBestFitFallback;
}
else
{
decoderReplacementFallback = (decoder.Fallback as DecoderReplacementFallback);
isMicrosoftBestFitFallback = decoder.Fallback.IsMicrosoftBestFitFallback;
}
if (isMicrosoftBestFitFallback || (decoderReplacementFallback != null && decoderReplacementFallback.MaxCharCount == 1))
{
char c;
if (decoderReplacementFallback == null)
{
c = '?';
}
else
{
c = decoderReplacementFallback.DefaultString[0];
}
if (charCount < byteCount)
{
base.ThrowCharsOverflow(decoder, charCount < 1);
ptr = bytes + charCount;
}
while (bytes < ptr)
{
char c2;
if (isMicrosoftBestFitFallback)
{
if (this.arrayBytesBestFit == null)
{
this.ReadBestFitTable();
}
c2 = this.arrayBytesBestFit[(int)(*bytes)];
}
else
{
c2 = this.mapBytesToUnicode[*bytes];
}
bytes++;
if (c2 == '�')
{
*chars = c;
}
else
{
*chars = c2;
}
chars++;
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)((long)(bytes - ptr2));
}
return((int)((long)(chars - ptr3)));
}
DecoderFallbackBuffer decoderFallbackBuffer = null;
byte[] array = new byte[1];
char * ptr4 = chars + charCount;
while (bytes < ptr)
{
char c3 = this.mapBytesToUnicode[*bytes];
bytes++;
if (c3 == '�')
{
if (decoderFallbackBuffer == null)
{
if (decoder == null)
{
decoderFallbackBuffer = base.DecoderFallback.CreateFallbackBuffer();
}
else
{
decoderFallbackBuffer = decoder.FallbackBuffer;
}
decoderFallbackBuffer.InternalInitialize(ptr - byteCount, ptr4);
}
array[0] = *(bytes - 1);
if (!decoderFallbackBuffer.InternalFallback(array, bytes, ref chars))
{
bytes--;
decoderFallbackBuffer.InternalReset();
base.ThrowCharsOverflow(decoder, bytes == ptr2);
break;
}
}
else
{
if (chars >= ptr4)
{
bytes--;
base.ThrowCharsOverflow(decoder, bytes == ptr2);
break;
}
*chars = c3;
chars++;
}
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)((long)(bytes - ptr2));
}
return((int)((long)(chars - ptr3)));
}
internal override unsafe int GetChars(byte *bytes, int byteCount,
char *chars, int charCount, DecoderNLS baseDecoder)
{
Debug.Assert(chars != null, "[UTF32Encoding.GetChars]chars!=null");
Debug.Assert(bytes != null, "[UTF32Encoding.GetChars]bytes!=null");
Debug.Assert(byteCount >= 0, "[UTF32Encoding.GetChars]byteCount >=0");
Debug.Assert(charCount >= 0, "[UTF32Encoding.GetChars]charCount >=0");
UTF32Decoder decoder = (UTF32Decoder)baseDecoder;
// None so far!
char *charStart = chars;
char *charEnd = chars + charCount;
byte *byteStart = bytes;
byte *byteEnd = bytes + byteCount;
// See if there's anything in our decoder (but don't clear it yet)
int readCount = 0;
uint iChar = 0;
// For fallback we may need a fallback buffer
DecoderFallbackBuffer fallbackBuffer = null;
// See if there's anything in our decoder
if (decoder != null)
{
readCount = decoder.readByteCount;
iChar = (uint)decoder.iChar;
fallbackBuffer = baseDecoder.FallbackBuffer;
// Shouldn't have anything in fallback buffer for GetChars
// (don't have to check m_throwOnOverflow for chars)
Debug.Assert(fallbackBuffer.Remaining == 0,
"[UTF32Encoding.GetChars]Expected empty fallback buffer at start");
}
else
{
fallbackBuffer = this.decoderFallback.CreateFallbackBuffer();
}
// Set our internal fallback interesting things.
fallbackBuffer.InternalInitialize(bytes, chars + charCount);
// Loop through our input, 4 characters at a time!
while (bytes < byteEnd)
{
// Get our next character
if (_bigEndian)
{
// Scoot left and add it to the bottom
iChar <<= 8;
iChar += *(bytes++);
}
else
{
// Scoot right and add it to the top
iChar >>= 8;
iChar += (uint)(*(bytes++)) << 24;
}
readCount++;
// See if we have all the bytes yet
if (readCount < 4)
{
continue;
}
// Have the bytes
readCount = 0;
// See if its valid to encode
if (iChar > 0x10FFFF || (iChar >= 0xD800 && iChar <= 0xDFFF))
{
// Need to fall back these 4 bytes
byte[] fallbackBytes;
if (_bigEndian)
{
fallbackBytes = new byte[] {
unchecked ((byte)(iChar >> 24)), unchecked ((byte)(iChar >> 16)),
unchecked ((byte)(iChar >> 8)), unchecked ((byte)(iChar))
};
}
else
{
fallbackBytes = new byte[] {
unchecked ((byte)(iChar)), unchecked ((byte)(iChar >> 8)),
unchecked ((byte)(iChar >> 16)), unchecked ((byte)(iChar >> 24))
};
}
// Chars won't be updated unless this works.
if (!fallbackBuffer.InternalFallback(fallbackBytes, bytes, ref chars))
{
// Couldn't fallback, throw or wait til next time
// We either read enough bytes for bytes-=4 to work, or we're
// going to throw in ThrowCharsOverflow because chars == charStart
Debug.Assert(bytes >= byteStart + 4 || chars == charStart,
"[UTF32Encoding.GetChars]Expected to have consumed bytes or throw (bad surrogate)");
bytes -= 4; // get back to where we were
iChar = 0; // Remembering nothing
fallbackBuffer.InternalReset();
ThrowCharsOverflow(decoder, chars == charStart); // Might throw, if no chars output
break; // Stop here, didn't throw
}
// Ignore the illegal character
iChar = 0;
continue;
}
// Ok, we have something we can add to our output
if (iChar >= 0x10000)
{
// Surrogates take 2
if (chars >= charEnd - 1)
{
// Throwing or stopping
// We either read enough bytes for bytes-=4 to work, or we're
// going to throw in ThrowCharsOverflow because chars == charStart
Debug.Assert(bytes >= byteStart + 4 || chars == charStart,
"[UTF32Encoding.GetChars]Expected to have consumed bytes or throw (surrogate)");
bytes -= 4; // get back to where we were
iChar = 0; // Remembering nothing
ThrowCharsOverflow(decoder, chars == charStart); // Might throw, if no chars output
break; // Stop here, didn't throw
}
*(chars++) = GetHighSurrogate(iChar);
iChar = GetLowSurrogate(iChar);
}
// Bounds check for normal character
else if (chars >= charEnd)
{
// Throwing or stopping
// We either read enough bytes for bytes-=4 to work, or we're
// going to throw in ThrowCharsOverflow because chars == charStart
Debug.Assert(bytes >= byteStart + 4 || chars == charStart,
"[UTF32Encoding.GetChars]Expected to have consumed bytes or throw (normal char)");
bytes -= 4; // get back to where we were
iChar = 0; // Remembering nothing
ThrowCharsOverflow(decoder, chars == charStart); // Might throw, if no chars output
break; // Stop here, didn't throw
}
// Add the rest of the surrogate or our normal character
*(chars++) = (char)iChar;
// iChar is back to 0
iChar = 0;
}
// See if we have something left over that has to be decoded
if (readCount > 0 && (decoder == null || decoder.MustFlush))
{
// Oops, there's something left over with no place to go.
byte[] fallbackBytes = new byte[readCount];
int tempCount = readCount;
if (_bigEndian)
{
while (tempCount > 0)
{
fallbackBytes[--tempCount] = unchecked ((byte)iChar);
iChar >>= 8;
}
}
else
{
while (tempCount > 0)
{
fallbackBytes[--tempCount] = unchecked ((byte)(iChar >> 24));
iChar <<= 8;
}
}
if (!fallbackBuffer.InternalFallback(fallbackBytes, bytes, ref chars))
{
// Couldn't fallback.
fallbackBuffer.InternalReset();
ThrowCharsOverflow(decoder, chars == charStart);// Might throw, if no chars output
// Stop here, didn't throw, backed up, so still nothing in buffer
}
else
{
// Don't clear our decoder unless we could fall it back.
// If we caught the if above, then we're a convert() and will catch this next time.
readCount = 0;
iChar = 0;
}
}
// Remember any left over stuff, clearing buffer as well for MustFlush
if (decoder != null)
{
decoder.iChar = (int)iChar;
decoder.readByteCount = readCount;
decoder.m_bytesUsed = (int)(bytes - byteStart);
}
// Shouldn't have anything in fallback buffer for GetChars
// (don't have to check m_throwOnOverflow for chars)
Debug.Assert(fallbackBuffer.Remaining == 0,
"[UTF32Encoding.GetChars]Expected empty fallback buffer at end");
// Return our count
return((int)(chars - charStart));
}
internal unsafe override int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS baseDecoder)
{
base.CheckMemorySection();
DBCSCodePageEncoding.DBCSDecoder dbcsdecoder = (DBCSCodePageEncoding.DBCSDecoder)baseDecoder;
byte *ptr = bytes;
byte *ptr2 = bytes + byteCount;
char *ptr3 = chars;
char *ptr4 = chars + charCount;
bool flag = false;
DecoderFallbackBuffer decoderFallbackBuffer = null;
if (dbcsdecoder != null && dbcsdecoder.bLeftOver > 0)
{
if (byteCount == 0)
{
if (!dbcsdecoder.MustFlush)
{
return(0);
}
decoderFallbackBuffer = dbcsdecoder.FallbackBuffer;
decoderFallbackBuffer.InternalInitialize(bytes, ptr4);
byte[] bytes2 = new byte[]
{
dbcsdecoder.bLeftOver
};
if (!decoderFallbackBuffer.InternalFallback(bytes2, bytes, ref chars))
{
base.ThrowCharsOverflow(dbcsdecoder, true);
}
dbcsdecoder.bLeftOver = 0;
return((int)((long)(chars - ptr3)));
}
else
{
int num = (int)dbcsdecoder.bLeftOver << 8;
num |= (int)(*bytes);
bytes++;
char c = this.mapBytesToUnicode[num];
if (c == '\0' && num != 0)
{
decoderFallbackBuffer = dbcsdecoder.FallbackBuffer;
decoderFallbackBuffer.InternalInitialize(ptr2 - byteCount, ptr4);
byte[] bytes3 = new byte[]
{
(byte)(num >> 8),
(byte)num
};
if (!decoderFallbackBuffer.InternalFallback(bytes3, bytes, ref chars))
{
base.ThrowCharsOverflow(dbcsdecoder, true);
}
}
else
{
if (chars >= ptr4)
{
base.ThrowCharsOverflow(dbcsdecoder, true);
}
*(chars++) = c;
}
}
}
while (bytes < ptr2)
{
int num2 = (int)(*bytes);
bytes++;
char c2 = this.mapBytesToUnicode[num2];
if (c2 == '')
{
if (bytes < ptr2)
{
num2 <<= 8;
num2 |= (int)(*bytes);
bytes++;
c2 = this.mapBytesToUnicode[num2];
}
else
{
if (dbcsdecoder != null && !dbcsdecoder.MustFlush)
{
flag = true;
dbcsdecoder.bLeftOver = (byte)num2;
break;
}
c2 = '\0';
}
}
if (c2 == '\0' && num2 != 0)
{
if (decoderFallbackBuffer == null)
{
if (dbcsdecoder == null)
{
decoderFallbackBuffer = base.DecoderFallback.CreateFallbackBuffer();
}
else
{
decoderFallbackBuffer = dbcsdecoder.FallbackBuffer;
}
decoderFallbackBuffer.InternalInitialize(ptr2 - byteCount, ptr4);
}
byte[] array;
if (num2 < 256)
{
array = new byte[]
{
(byte)num2
};
}
else
{
array = new byte[]
{
(byte)(num2 >> 8),
(byte)num2
};
}
if (!decoderFallbackBuffer.InternalFallback(array, bytes, ref chars))
{
bytes -= array.Length;
decoderFallbackBuffer.InternalReset();
base.ThrowCharsOverflow(dbcsdecoder, bytes == ptr);
break;
}
}
else
{
if (chars >= ptr4)
{
bytes--;
if (num2 >= 256)
{
bytes--;
}
base.ThrowCharsOverflow(dbcsdecoder, bytes == ptr);
break;
}
*(chars++) = c2;
}
}
if (dbcsdecoder != null)
{
if (!flag)
{
dbcsdecoder.bLeftOver = 0;
}
dbcsdecoder.m_bytesUsed = (int)((long)(bytes - ptr));
}
return((int)((long)(chars - ptr3)));
}
internal override unsafe int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS decoder)
{
this.CheckMemorySection();
byte *numPtr1 = bytes + byteCount;
byte *numPtr2 = bytes;
char *chPtr = chars;
DecoderReplacementFallback replacementFallback;
bool microsoftBestFitFallback;
if (decoder == null)
{
replacementFallback = this.DecoderFallback as DecoderReplacementFallback;
microsoftBestFitFallback = this.DecoderFallback.IsMicrosoftBestFitFallback;
}
else
{
replacementFallback = decoder.Fallback as DecoderReplacementFallback;
microsoftBestFitFallback = decoder.Fallback.IsMicrosoftBestFitFallback;
}
if (microsoftBestFitFallback || replacementFallback != null && replacementFallback.MaxCharCount == 1)
{
char ch1 = replacementFallback != null ? replacementFallback.DefaultString[0] : '?';
if (charCount < byteCount)
{
this.ThrowCharsOverflow(decoder, charCount < 1);
numPtr1 = bytes + charCount;
}
while (bytes < numPtr1)
{
char ch2;
if (microsoftBestFitFallback)
{
if (this.arrayBytesBestFit == null)
{
this.ReadBestFitTable();
}
ch2 = this.arrayBytesBestFit[(int)*bytes];
}
else
{
ch2 = this.mapBytesToUnicode[*bytes];
}
++bytes;
*chars = (int)ch2 != 65533 ? ch2 : ch1;
chars += 2;
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - numPtr2);
}
return((int)(chars - chPtr));
}
DecoderFallbackBuffer decoderFallbackBuffer = (DecoderFallbackBuffer)null;
byte[] bytes1 = new byte[1];
char * charEnd = chars + charCount;
while (bytes < numPtr1)
{
char ch = this.mapBytesToUnicode[*bytes];
++bytes;
if ((int)ch == 65533)
{
if (decoderFallbackBuffer == null)
{
decoderFallbackBuffer = decoder != null ? decoder.FallbackBuffer : this.DecoderFallback.CreateFallbackBuffer();
decoderFallbackBuffer.InternalInitialize(numPtr1 - byteCount, charEnd);
}
bytes1[0] = *(bytes - 1);
if (!decoderFallbackBuffer.InternalFallback(bytes1, bytes, ref chars))
{
--bytes;
decoderFallbackBuffer.InternalReset();
this.ThrowCharsOverflow(decoder, bytes == numPtr2);
break;
}
}
else
{
if (chars >= charEnd)
{
--bytes;
this.ThrowCharsOverflow(decoder, bytes == numPtr2);
break;
}
*chars = ch;
chars += 2;
}
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - numPtr2);
}
return((int)(chars - chPtr));
}
internal override unsafe int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS baseDecoder)
{
this.CheckMemorySection();
DBCSCodePageEncoding.DBCSDecoder dbcsDecoder = (DBCSCodePageEncoding.DBCSDecoder)baseDecoder;
byte *numPtr1 = bytes;
byte *numPtr2 = bytes + byteCount;
char *chPtr = chars;
char *charEnd = chars + charCount;
bool flag = false;
DecoderFallbackBuffer decoderFallbackBuffer = (DecoderFallbackBuffer)null;
if (dbcsDecoder != null && (int)dbcsDecoder.bLeftOver > 0)
{
if (byteCount == 0)
{
if (!dbcsDecoder.MustFlush)
{
return(0);
}
DecoderFallbackBuffer fallbackBuffer = dbcsDecoder.FallbackBuffer;
fallbackBuffer.InternalInitialize(bytes, charEnd);
byte[] bytes1 = new byte[1] {
dbcsDecoder.bLeftOver
};
if (!fallbackBuffer.InternalFallback(bytes1, bytes, ref chars))
{
this.ThrowCharsOverflow((DecoderNLS)dbcsDecoder, true);
}
dbcsDecoder.bLeftOver = (byte)0;
return((int)(chars - chPtr));
}
int index = (int)dbcsDecoder.bLeftOver << 8 | (int)*bytes;
++bytes;
char ch = this.mapBytesToUnicode[index];
if ((int)ch == 0 && index != 0)
{
decoderFallbackBuffer = dbcsDecoder.FallbackBuffer;
decoderFallbackBuffer.InternalInitialize(numPtr2 - byteCount, charEnd);
byte[] bytes1 = new byte[2] {
(byte)(index >> 8), (byte)index
};
if (!decoderFallbackBuffer.InternalFallback(bytes1, bytes, ref chars))
{
this.ThrowCharsOverflow((DecoderNLS)dbcsDecoder, true);
}
}
else
{
if (chars >= charEnd)
{
this.ThrowCharsOverflow((DecoderNLS)dbcsDecoder, true);
}
*chars++ = ch;
}
}
while (bytes < numPtr2)
{
int index = (int)*bytes;
++bytes;
char ch = this.mapBytesToUnicode[index];
if ((int)ch == 65534)
{
if (bytes < numPtr2)
{
index = index << 8 | (int)*bytes;
++bytes;
ch = this.mapBytesToUnicode[index];
}
else if (dbcsDecoder == null || dbcsDecoder.MustFlush)
{
ch = char.MinValue;
}
else
{
flag = true;
dbcsDecoder.bLeftOver = (byte)index;
break;
}
}
if ((int)ch == 0 && index != 0)
{
if (decoderFallbackBuffer == null)
{
decoderFallbackBuffer = dbcsDecoder != null ? dbcsDecoder.FallbackBuffer : this.DecoderFallback.CreateFallbackBuffer();
decoderFallbackBuffer.InternalInitialize(numPtr2 - byteCount, charEnd);
}
byte[] bytes1;
if (index < 256)
{
bytes1 = new byte[1] {
(byte)index
}
}
;
else
{
bytes1 = new byte[2]
{
(byte)(index >> 8),
(byte)index
}
};
if (!decoderFallbackBuffer.InternalFallback(bytes1, bytes, ref chars))
{
bytes -= bytes1.Length;
decoderFallbackBuffer.InternalReset();
this.ThrowCharsOverflow((DecoderNLS)dbcsDecoder, bytes == numPtr1);
break;
}
}
else
{
if (chars >= charEnd)
{
--bytes;
if (index >= 256)
{
--bytes;
}
this.ThrowCharsOverflow((DecoderNLS)dbcsDecoder, bytes == numPtr1);
break;
}
*chars++ = ch;
}
}
if (dbcsDecoder != null)
{
if (!flag)
{
dbcsDecoder.bLeftOver = (byte)0;
}
dbcsDecoder.m_bytesUsed = (int)(bytes - numPtr1);
}
return((int)(chars - chPtr));
}
internal override unsafe int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS decoder)
{
byte *numPtr1 = bytes + byteCount;
byte *numPtr2 = bytes;
char *chPtr = chars;
DecoderReplacementFallback replacementFallback = decoder != null ? decoder.Fallback as DecoderReplacementFallback : this.DecoderFallback as DecoderReplacementFallback;
if (replacementFallback != null && replacementFallback.MaxCharCount == 1)
{
char ch = replacementFallback.DefaultString[0];
if (charCount < byteCount)
{
this.ThrowCharsOverflow(decoder, charCount < 1);
numPtr1 = bytes + charCount;
}
while (bytes < numPtr1)
{
byte num = *bytes++;
* chars++ = (int)num < 128 ? (char)num : ch;
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - numPtr2);
}
return((int)(chars - chPtr));
}
DecoderFallbackBuffer decoderFallbackBuffer = (DecoderFallbackBuffer)null;
byte[] bytes1 = new byte[1];
char * charEnd = chars + charCount;
while (bytes < numPtr1)
{
byte num = *bytes;
++bytes;
if ((int)num >= 128)
{
if (decoderFallbackBuffer == null)
{
decoderFallbackBuffer = decoder != null ? decoder.FallbackBuffer : this.DecoderFallback.CreateFallbackBuffer();
decoderFallbackBuffer.InternalInitialize(numPtr1 - byteCount, charEnd);
}
bytes1[0] = num;
if (!decoderFallbackBuffer.InternalFallback(bytes1, bytes, ref chars))
{
--bytes;
decoderFallbackBuffer.InternalReset();
this.ThrowCharsOverflow(decoder, chars == chPtr);
break;
}
}
else
{
if (chars >= charEnd)
{
--bytes;
this.ThrowCharsOverflow(decoder, chars == chPtr);
break;
}
*chars = (char)num;
chars += 2;
}
}
if (decoder != null)
{
decoder.m_bytesUsed = (int)(bytes - numPtr2);
}
return((int)(chars - chPtr));
}