private void ZeroExpandFragment(ValuePosition start, ValuePosition end, bool allowControlCharacters, System.Text.StringBuilder sb)
{
var valueIterator = new ValueIterator(iterator.Lines, iterator.LinesMask, start, end);
while (!valueIterator.Eof) {
var num = (byte) valueIterator.Get();
if (!allowControlCharacters && num < 32)
num = (byte) ValueDecoder.ReplaceProhibitedControlCharacter((char) num);
sb.Append((char) num);
}
}
private void DecodeEncodedWord(
byte bOrQ, System.Text.Decoder decoder, ValuePosition encodedWordContentStart, ValuePosition encodedWordContentEnd, bool allowControlCharacters, ref byte[] byteBuffer, ref char[] charBuffer, System.Text.StringBuilder sb)
{
var valueIterator = new ValueIterator(iterator.Lines, iterator.LinesMask, encodedWordContentStart, encodedWordContentEnd);
if (charBuffer == null)
charBuffer = Internal.ScratchPad.GetCharBuffer(System.Math.Min(1024, iterator.TotalLength));
if (byteBuffer == null)
byteBuffer = Internal.ScratchPad.GetByteBuffer(System.Math.Max(maxCharsetNameLength + 1, System.Math.Min(1024, iterator.TotalLength)));
var byteBufferLength = 0;
if (bOrQ == 66) {
var num1 = 0;
var num2 = 0;
while (!valueIterator.Eof) {
var num3 = (byte) (valueIterator.Get() - 32);
if (num3 < Schema.Mime.Encoders.ByteEncoder.Tables.Base64ToByte.Length) {
var num4 = Schema.Mime.Encoders.ByteEncoder.Tables.Base64ToByte[num3];
if (num4 < 64) {
num2 = num2 << 6 | num4;
++num1;
if (num1 == 4) {
var numArray1 = byteBuffer;
var index1 = byteBufferLength;
var num5 = 1;
var num6 = index1 + num5;
int num7 = (byte) (num2 >> 16);
numArray1[index1] = (byte) num7;
var numArray2 = byteBuffer;
var index2 = num6;
var num8 = 1;
var num9 = index2 + num8;
int num10 = (byte) (num2 >> 8);
numArray2[index2] = (byte) num10;
var numArray3 = byteBuffer;
var index3 = num9;
var num11 = 1;
byteBufferLength = index3 + num11;
int num12 = (byte) num2;
numArray3[index3] = (byte) num12;
num1 = 0;
if (byteBufferLength + 3 >= byteBuffer.Length) {
this.FlushDecodedBytes(byteBuffer, byteBufferLength, decoder, allowControlCharacters, charBuffer, sb);
byteBufferLength = 0;
}
}
}
}
}
if (num1 != 0) {
if (num1 == 2) {
var num3 = num2 << 12;
byteBuffer[byteBufferLength++] = (byte) (num3 >> 16);
} else if (num1 == 3) {
var num3 = num2 << 6;
var numArray1 = byteBuffer;
var index1 = byteBufferLength;
var num4 = 1;
var num5 = index1 + num4;
int num6 = (byte) (num3 >> 16);
numArray1[index1] = (byte) num6;
var numArray2 = byteBuffer;
var index2 = num5;
var num7 = 1;
byteBufferLength = index2 + num7;
int num8 = (byte) (num3 >> 8);
numArray2[index2] = (byte) num8;
}
}
} else {
while (!valueIterator.Eof) {
var num1 = (byte) valueIterator.Get();
switch (num1) {
case 61:
var index1 = valueIterator.Get();
var index2 = valueIterator.Get();
int num2 = index1 < 0 ? byte.MaxValue : Schema.Mime.Encoders.ByteEncoder.Tables.NumFromHex[index1];
int num3 = index2 < 0 ? byte.MaxValue : Schema.Mime.Encoders.ByteEncoder.Tables.NumFromHex[index2];
num1 = num2 == (int) byte.MaxValue || num3 == (int) byte.MaxValue ? (byte) 61 : (byte) (num2 << 4 | num3);
break;
case 95:
num1 = 32;
break;
}
byteBuffer[byteBufferLength++] = num1;
if (byteBufferLength >= byteBuffer.Length) {
this.FlushDecodedBytes(byteBuffer, byteBufferLength, decoder, allowControlCharacters, charBuffer, sb);
byteBufferLength = 0;
}
}
}
if (byteBufferLength == 0)
return;
this.FlushDecodedBytes(byteBuffer, byteBufferLength, decoder, allowControlCharacters, charBuffer, sb);
}
// private bool ParseEncodedWord(string lastEncodedWordCharsetName, string lastEncodedWordLanguage, ref byte[] byteBuffer, out string encodedWordCharsetName, out string encodedWordLanguage, out byte bOrQ, out ValuePosition encodedWordContentStart, out ValuePosition encodedWordContentEnd)
// {
// encodedWordCharsetName = (string) null;
// encodedWordLanguage = (string) null;
// bOrQ = (byte) 0;
// // ISSUE: explicit reference operation
// // ISSUE: variable of a reference type
// ValuePosition& local1 = @encodedWordContentStart;
// // ISSUE: explicit reference operation
// // ISSUE: variable of a reference type
// ValuePosition& local2 = @encodedWordContentEnd;
// // ISSUE: explicit reference operation
// // ISSUE: variable of a reference type
// ValuePosition& local3 = @encodedWordContentEnd;
// ValuePosition valuePosition1 = new ValuePosition();
// ValuePosition valuePosition2 = valuePosition1;
// // ISSUE: explicit reference operation
// ^local3 = valuePosition2;
// ValuePosition valuePosition3;
// ValuePosition valuePosition4 = valuePosition3 = valuePosition1;
// // ISSUE: explicit reference operation
// ^local2 = valuePosition3;
// ValuePosition valuePosition5 = valuePosition4;
// // ISSUE: explicit reference operation
// ^local1 = valuePosition5;
// int num1 = this.iterator.Get();
// if (this.iterator.Get() != 63)
// return false;
// if (byteBuffer == null)
// byteBuffer = ScratchPad.GetByteBuffer(Math.Max(this.maxCharsetNameLength + 1, Math.Min(1024, this.iterator.TotalLength)));
// int num2 = -1;
// int count1;
// for (count1 = 0; count1 < this.maxCharsetNameLength + 1; ++count1)
// {
// num1 = this.iterator.Get();
// if (ValueDecoder.Is2047Token((byte) num1))
// {
// byteBuffer[count1] = (byte) num1;
// if (num2 == -1 && num1 == 42)
// num2 = count1;
// }
// else
// break;
// }
// if (count1 == this.maxCharsetNameLength + 1 || num1 != 63 || (count1 == 0 || num2 == 0))
// return false;
// int num3 = this.iterator.Get();
// bOrQ = num3 == 66 || num3 == 98 ? (byte) 66 : (num3 == 81 || num3 == 113 ? (byte) 81 : (byte) 0);
// if ((int) bOrQ == 0 || this.iterator.Get() != 63)
// return false;
// if (num2 != -1)
// {
// int offset = num2 + 1;
// int count2 = count1 - (num2 + 1);
// count1 = num2;
// if (count2 != 0)
// {
// if (lastEncodedWordLanguage != null && count2 == lastEncodedWordLanguage.Length)
// {
// int index = 0;
// while (index < count2 && (int) lastEncodedWordLanguage[index] == (int) byteBuffer[offset + index])
// ++index;
// encodedWordLanguage = index == count2 ? lastEncodedWordLanguage : ByteString.BytesToString(byteBuffer, offset, count2, false);
// }
// else
// encodedWordLanguage = ByteString.BytesToString(byteBuffer, offset, count2, false);
// }
// }
// if (lastEncodedWordCharsetName != null && count1 == lastEncodedWordCharsetName.Length)
// {
// int index = 0;
// while (index < count1 && (int) lastEncodedWordCharsetName[index] == (int) byteBuffer[index])
// ++index;
// encodedWordCharsetName = index == count1 ? lastEncodedWordCharsetName : ByteString.BytesToString(byteBuffer, 0, count1, false);
// }
// else
// encodedWordCharsetName = ByteString.BytesToString(byteBuffer, 0, count1, false);
// encodedWordContentStart = this.iterator.CurrentPosition;
// bool flag = false;
// while (true)
// {
// encodedWordContentEnd = this.iterator.CurrentPosition;
// int num4 = this.iterator.Get();
// if (num4 != -1)
// {
// if (MimeScan.IsLWSP((byte) num4))
// {
// flag = true;
// }
// else
// {
// if (num4 == 63)
// {
// switch (this.iterator.Get())
// {
// case -1:
// goto label_35;
// case 61:
// goto label_44;
// default:
// this.iterator.Unget();
// if ((int) bOrQ == 81)
// break;
// goto label_37;
// }
// }
// else if (num4 == 61 && flag)
// {
// switch (this.iterator.Get())
// {
// case -1:
// goto label_40;
// case 63:
// goto label_41;
// default:
// this.iterator.Unget();
// break;
// }
// }
// flag = false;
// }
// }
// else
// break;
// }
// return false;
//label_35:
// return false;
//label_37:
// return false;
//label_40:
// return false;
//label_41:
// this.iterator.Unget();
// this.iterator.Unget();
// return false;
//label_44:
// return true;
// }
private bool ParseEncodedWord(
string lastEncodedWordCharsetName, string lastEncodedWordLanguage, ref byte[] byteBuffer, out string encodedWordCharsetName, out string encodedWordLanguage, out byte bOrQ, out ValuePosition encodedWordContentStart,
out ValuePosition encodedWordContentEnd)
{
encodedWordCharsetName = null;
encodedWordLanguage = null;
bOrQ = 0;
var position = new ValuePosition();
encodedWordContentEnd = position;
encodedWordContentStart = encodedWordContentEnd = position;
var num = iterator.Get();
if (iterator.Get() != 0x3f)
return false;
if (byteBuffer == null)
byteBuffer = Internal.ScratchPad.GetByteBuffer(System.Math.Max(maxCharsetNameLength + 1, System.Math.Min(0x400, iterator.TotalLength)));
var num3 = -1;
var index = 0;
while (index < (maxCharsetNameLength + 1)) {
num = iterator.Get();
if (!ValueDecoder.Is2047Token((byte) num))
break;
byteBuffer[index] = (byte) num;
if ((num3 == -1) && (num == 0x2a))
num3 = index;
index++;
}
if (((index == (maxCharsetNameLength + 1)) || (num != 0x3f)) || ((index == 0) || (num3 == 0)))
return false;
num = iterator.Get();
bOrQ = ((num == 0x42) || (num == 0x62)) ? ((byte) 0x42) : (((num == 0x51) || (num == 0x71)) ? ((byte) 0x51) : ((byte) 0));
if ((bOrQ == 0) || (iterator.Get() != 0x3f))
return false;
if (num3 != -1) {
var offset = num3 + 1;
var count = index - (num3 + 1);
index = num3;
if (count != 0) {
if ((lastEncodedWordLanguage == null) || (count != lastEncodedWordLanguage.Length))
encodedWordLanguage = Internal.ByteString.BytesToString(byteBuffer, offset, count, false);
else {
var num6 = 0;
while (num6 < count) {
if (lastEncodedWordLanguage[num6] != byteBuffer[offset + num6])
break;
num6++;
}
if (num6 != count)
encodedWordLanguage = Internal.ByteString.BytesToString(byteBuffer, offset, count, false);
else
encodedWordLanguage = lastEncodedWordLanguage;
}
}
}
if ((lastEncodedWordCharsetName == null) || (index != lastEncodedWordCharsetName.Length))
encodedWordCharsetName = Internal.ByteString.BytesToString(byteBuffer, 0, index, false);
else {
var num7 = 0;
while (num7 < index) {
if (lastEncodedWordCharsetName[num7] != byteBuffer[num7])
break;
num7++;
}
if (num7 != index)
encodedWordCharsetName = Internal.ByteString.BytesToString(byteBuffer, 0, index, false);
else
encodedWordCharsetName = lastEncodedWordCharsetName;
}
encodedWordContentStart = iterator.CurrentPosition;
var flag = false;
while (true) {
encodedWordContentEnd = iterator.CurrentPosition;
num = iterator.Get();
if (num == -1)
return false;
if (MimeScan.IsLWSP((byte) num))
flag = true;
else {
if (num == 0x3f) {
num = iterator.Get();
switch (num) {
case -1:
return false;
case 0x3d:
return true;
}
iterator.Unget();
if (bOrQ != 0x51)
return false;
} else if ((num == 0x3d) && flag) {
switch (iterator.Get()) {
case -1:
return false;
case 0x3f:
iterator.Unget();
iterator.Unget();
return false;
}
iterator.Unget();
}
flag = false;
}
}
}
private void ConvertRawFragment(ValuePosition start, ValuePosition end, System.Text.Decoder decoder, bool allowControlCharacters, ref char[] charBuffer, System.Text.StringBuilder sb)
{
var valueIterator = new ValueIterator(iterator.Lines, iterator.LinesMask, start, end);
if (valueIterator.Eof)
return;
if (charBuffer == null)
charBuffer = Internal.ScratchPad.GetCharBuffer(System.Math.Min(1024, iterator.TotalLength));
int bytesUsed;
int charsUsed;
bool completed;
do {
decoder.Convert(valueIterator.Bytes, valueIterator.Offset, valueIterator.Length, charBuffer, 0, charBuffer.Length, false, out bytesUsed, out charsUsed, out completed);
if (charsUsed != 0) {
if (!allowControlCharacters)
ValueDecoder.RemoveProhibitedControlCharacters(charBuffer, 0, charsUsed);
sb.Append(charBuffer, 0, charsUsed);
}
valueIterator.Get(bytesUsed);
} while (!completed || !valueIterator.Eof);
decoder.Convert(MimeString.EmptyByteArray, 0, 0, charBuffer, 0, charBuffer.Length, true, out bytesUsed, out charsUsed, out completed);
if (charsUsed == 0)
return;
if (!allowControlCharacters)
ValueDecoder.RemoveProhibitedControlCharacters(charBuffer, 0, charsUsed);
sb.Append(charBuffer, 0, charsUsed);
}
