public MimeWriter(System.IO.Stream data, bool forceMime, EncodingOptions encodingOptions)
{
if (data == null)
throw new System.ArgumentNullException(nameof(data));
if (!data.CanWrite)
throw new System.ArgumentException("Stream must support writing", nameof(data));
this.forceMime = forceMime;
this.data = data;
this.encodingOptions = encodingOptions;
shimStream = new WriterQueueStream(this);
}
internal override long WriteTo(System.IO.Stream stream, EncodingOptions encodingOptions, MimeOutputFilter filter, ref MimeStringLength currentLineLength, ref byte[] scratchBuffer)
{
var nameLength = this.WriteName(stream, ref scratchBuffer);
currentLineLength.IncrementBy((int) nameLength);
var merge = false;
if (!this.IsDirty && this.RawLength != 0) {
if (this.IsProtected) {
var num = nameLength + Header.WriteLines(lines, stream);
currentLineLength.SetAs(0);
return num;
}
if (!this.IsHeaderLineTooLong(nameLength, out merge)) {
var num = nameLength + Header.WriteLines(lines, stream);
currentLineLength.SetAs(0);
return num;
}
}
var mimeStringList = lines;
if (merge)
mimeStringList = Header.MergeLines(mimeStringList);
return nameLength + Header.QuoteAndFold(stream, mimeStringList, 4026531840U, false, mimeStringList.Length > 0, encodingOptions.AllowUTF8, 0, ref currentLineLength, ref scratchBuffer) +
Header.WriteLineEnd(stream, ref currentLineLength);
}
internal override long WriteTo(System.IO.Stream stream, EncodingOptions encodingOptions, MimeOutputFilter filter, ref MimeStringLength currentLineLength, ref byte[] scratchBuffer)
{
var num1 = this.WriteName(stream, ref scratchBuffer);
currentLineLength.IncrementBy((int) num1);
if (!this.IsDirty && this.RawLength != 0 && this.IsProtected) {
var num2 = Header.WriteLines(this.Lines, stream);
var num3 = num1 + num2;
currentLineLength.SetAs(0);
return num3;
}
if (!parsed)
this.Parse();
var num4 = num1 + DateHeader.WriteDateHeaderValue(stream, utcDateTime, timeZoneOffset, ref currentLineLength);
currentLineLength.SetAs(0);
return num4;
}
internal override long WriteValue(System.IO.Stream stream, EncodingOptions encodingOptions, MimeOutputFilter filter, ref MimeStringLength currentLineLength, ref byte[] scratchBuffer)
{
if (disp.Length == 0)
disp = "attachment";
return base.WriteValue(stream, encodingOptions, filter, ref currentLineLength, ref scratchBuffer);
}
internal MimeStringList GetDisplayNameToWrite(EncodingOptions encodingOptions)
{
var mimeStringList = displayNameFragments;
if (mimeStringList.GetLength(4026531839U) == 0 && decodedDisplayName != null && decodedDisplayName.Length != 0) {
mimeStringList =
MimeCommon.EncodeValue(
(encodingOptions.EncodingFlags & EncodingFlags.QuoteDisplayNameBeforeRfc2047Encoding) == EncodingFlags.None || !this.IsQuotingRequired(decodedDisplayName, encodingOptions.AllowUTF8) ||
!MimeCommon.IsEncodingRequired(decodedDisplayName, encodingOptions.AllowUTF8)
? decodedDisplayName
: this.QuoteString(decodedDisplayName),
encodingOptions,
ValueEncodingStyle.Phrase);
displayNameFragments = mimeStringList;
} else if ((EncodingFlags.ForceReencode & encodingOptions.EncodingFlags) != EncodingFlags.None)
mimeStringList = MimeCommon.EncodeValue(this.DisplayName, encodingOptions, ValueEncodingStyle.Phrase);
return mimeStringList;
}
internal override long WriteTo(System.IO.Stream stream, EncodingOptions encodingOptions, MimeOutputFilter filter, ref MimeStringLength currentLineLength, ref byte[] scratchBuffer)
{
var nameLength = this.WriteName(stream, ref scratchBuffer);
currentLineLength.IncrementBy((int) nameLength);
MimeStringList mimeStringList;
if (this.RawLength == 0 && decodedValue != null && decodedValue.Length != 0)
mimeStringList = this.GetEncodedValue(encodingOptions, ValueEncodingStyle.Normal);
else if ((EncodingFlags.ForceReencode & encodingOptions.EncodingFlags) != EncodingFlags.None) {
this.ForceParse();
mimeStringList = this.GetEncodedValue(encodingOptions, ValueEncodingStyle.Normal);
} else {
var merge = false;
if (!this.IsDirty && this.RawLength != 0) {
if (this.IsProtected) {
var num = nameLength + Header.WriteLines(this.Lines, stream);
currentLineLength.SetAs(0);
return num;
}
if (!this.IsHeaderLineTooLong(nameLength, out merge)) {
var num = nameLength + Header.WriteLines(this.Lines, stream);
currentLineLength.SetAs(0);
return num;
}
}
mimeStringList = this.Lines;
if (merge)
mimeStringList = Header.MergeLines(mimeStringList);
}
return nameLength + Header.QuoteAndFold(stream, mimeStringList, 4026531840U, false, mimeStringList.Length > 0, encodingOptions.AllowUTF8, 0, ref currentLineLength, ref scratchBuffer) +
Header.WriteLineEnd(stream, ref currentLineLength);
}
internal MimeStringList GetEncodedValue(EncodingOptions encodingOptions, ValueEncodingStyle encodingStyle)
{
if (string.IsNullOrEmpty(decodedValue))
return this.Lines;
return MimeCommon.EncodeValue(decodedValue, encodingOptions, encodingStyle);
}
internal static MimeStringList EncodeValue(string value, EncodingOptions encodingOptions, ValueEncodingStyle style)
{
if (string.IsNullOrEmpty(value))
return MimeStringList.Empty;
if (!MimeCommon.IsEncodingRequired(value, encodingOptions.AllowUTF8))
return new MimeStringList(new MimeString(value));
var mimeStringList = new MimeStringList();
Globalization.Charset charset;
if (encodingOptions.CharsetName != null)
charset = encodingOptions.GetEncodingCharset();
else {
var codePageDetector = new Globalization.OutboundCodePageDetector();
codePageDetector.AddText(value);
if (!Globalization.Charset.TryGetCharset(codePageDetector.GetCodePage(), out charset))
charset = DefaultEncodingOptions.GetEncodingCharset();
}
var charClasses = Schema.Mime.Encoders.ByteEncoder.Tables.CharClasses.QEncode;
if (style == ValueEncodingStyle.Phrase)
charClasses |= Schema.Mime.Encoders.ByteEncoder.Tables.CharClasses.QPhraseUnsafe;
else if (style == ValueEncodingStyle.Comment)
charClasses |= Schema.Mime.Encoders.ByteEncoder.Tables.CharClasses.QCommentUnsafe;
var allowQEncoding = false;
CalculateMethodAndChunkSize methodAndChunkSize;
if (charset.Kind == Globalization.CodePageKind.Sbcs) {
methodAndChunkSize = calculateMethodAndChunkSizeSbcs;
if (charset.AsciiSupport >= Globalization.CodePageAsciiSupport.Fine)
allowQEncoding = true;
} else if (charset.Kind == Globalization.CodePageKind.Dbcs) {
methodAndChunkSize = calculateMethodAndChunkSizeDbcs;
if (charset.AsciiSupport >= Globalization.CodePageAsciiSupport.Fine)
allowQEncoding = true;
} else if (charset.CodePage == 65001) {
methodAndChunkSize = calculateMethodAndChunkSizeUtf8;
allowQEncoding = true;
} else {
methodAndChunkSize = charset.CodePage == 1200 || charset.CodePage == 1201
? calculateMethodAndChunkSizeUnicode16
: (charset.CodePage == 12000 || charset.CodePage == 12001 ? calculateMethodAndChunkSizeUnicode32 : calculateMethodAndChunkSizeMbcs);
}
var num1 = 75;
var num2 = 7 + charset.Name.Length;
var num3 = num1 - num2;
if (num3 < 32) {
num1 = num2 + 32;
num3 = 32;
}
var byteBuffer = Internal.ScratchPad.GetByteBuffer(num3);
var encoding = charset.GetEncoding();
var numArray1 = new byte[5 + charset.Name.Length];
var num4 = 0;
var numArray2 = numArray1;
var index1 = num4;
var num5 = 1;
var num6 = index1 + num5;
var num7 = 61;
numArray2[index1] = (byte) num7;
var numArray3 = numArray1;
var index2 = num6;
var num8 = 1;
var bytesOffset = index2 + num8;
var num9 = 63;
numArray3[index2] = (byte) num9;
var num10 = bytesOffset + Internal.ByteString.StringToBytes(charset.Name, numArray1, bytesOffset, false);
var numArray4 = numArray1;
var index3 = num10;
var num11 = 1;
var num12 = index3 + num11;
var num13 = 63;
numArray4[index3] = (byte) num13;
var numArray5 = numArray1;
var index4 = num12;
var num14 = 1;
var num15 = index4 + num14;
var num16 = 88;
numArray5[index4] = (byte) num16;
var numArray6 = numArray1;
var index5 = num15;
var num17 = 1;
var num18 = index5 + num17;
var num19 = 63;
numArray6[index5] = (byte) num19;
var mimeString = new MimeString(numArray1);
var num20 = 0;
byte[] numArray7 = null;
var count = 0;
var num21 = num3/4;
while (num20 != value.Length) {
byte method;
int chunkSize;
methodAndChunkSize(allowQEncoding, charClasses, encoding, value, num20, num3, out method, out chunkSize);
label_25:
int bytes;
int outputOffset;
while (true) {
do {
do {
try {
bytes = encoding.GetBytes(value, num20, chunkSize, byteBuffer, 0);
} catch (System.ArgumentException ex) {
if (chunkSize < 2)
throw;
chunkSize -= chunkSize > 10 ? 3 : 1;
if (MimeCommon.IsLowSurrogate(value[num20 + chunkSize])) {
if (MimeCommon.IsHighSurrogate(value[num20 + chunkSize - 1]))
--chunkSize;
}
goto label_25;
}
if (bytes != 0) {
if (numArray7 == null || numArray7.Length - count < num1 + 1) {
if (numArray7 != null) {
mimeStringList.Append(new MimeString(numArray7, 0, count));
count = 0;
}
numArray7 = new byte[System.Math.Min(((value.Length - num20)/chunkSize + 1)*(num1 + 1), 4096/(num1 + 1)*(num1 + 1))];
}
var destinationIndex = count;
if (mimeStringList.Count > 0 || destinationIndex > 0)
numArray7[destinationIndex++] = 32;
outputOffset = destinationIndex + mimeString.CopyTo(numArray7, destinationIndex);
numArray7[outputOffset - 2] = method;
if (method == 81) {
var num22 = outputOffset;
int index6;
for (index6 = 0; index6 < bytes && outputOffset - num22 + 1 <= num3; ++index6) {
var num23 = byteBuffer[index6];
if (MimeCommon.QEncodingRequired((char) num23, charClasses)) {
if (outputOffset - num22 + 3 <= num3) {
var numArray8 = numArray7;
var index7 = outputOffset;
var num24 = 1;
var num25 = index7 + num24;
var num26 = 61;
numArray8[index7] = (byte) num26;
var numArray9 = numArray7;
var index8 = num25;
var num27 = 1;
var num28 = index8 + num27;
int num29 = Schema.Mime.Encoders.ByteEncoder.NibbleToHex[num23 >> 4];
numArray9[index8] = (byte) num29;
var numArray10 = numArray7;
var index9 = num28;
var num30 = 1;
outputOffset = index9 + num30;
int num31 = Schema.Mime.Encoders.ByteEncoder.NibbleToHex[num23 & 15];
numArray10[index9] = (byte) num31;
} else
break;
} else {
if (num23 == 32)
num23 = 95;
numArray7[outputOffset++] = num23;
}
}
if (index6 != bytes) {
if (chunkSize < 2)
throw new System.InvalidOperationException("unexpected thing just happened");
chunkSize -= chunkSize > 10 ? 3 : 1;
} else
goto label_56;
} else
goto label_55;
} else
goto label_57;
} while (!MimeCommon.IsLowSurrogate(value[num20 + chunkSize]));
} while (!MimeCommon.IsHighSurrogate(value[num20 + chunkSize - 1]));
--chunkSize;
}
label_55:
outputOffset += MimeCommon.Base64EncodeChunk(byteBuffer, 0, bytes, numArray7, outputOffset);
label_56:
var numArray11 = numArray7;
var index10 = outputOffset;
var num32 = 1;
var num33 = index10 + num32;
var num34 = 63;
numArray11[index10] = (byte) num34;
var numArray12 = numArray7;
var index11 = num33;
var num35 = 1;
var num36 = index11 + num35;
var num37 = 61;
numArray12[index11] = (byte) num37;
count = num36;
label_57:
num20 += chunkSize;
}
if (numArray7 != null)
mimeStringList.Append(new MimeString(numArray7, 0, count));
return mimeStringList;
}
