private bool WriteModifiedProperty(TnefWriter writer, TnefReader reader, TnefPropertyTag propertyTag, object value, bool forceUnicode, ref bool startAttribute, byte[] scratchBuffer)
{
TnefPropertyReader propertyReader = reader.PropertyReader;
TnefAttributeTag attributeTag = reader.AttributeTag;
TnefAttributeLevel attributeLevel = reader.AttributeLevel;
StoragePropertyValue storagePropertyValue = value as StoragePropertyValue;
if (storagePropertyValue != null)
{
if (this.attachmentData != null && this.attachmentData.EmbeddedMessage != null && propertyReader.IsEmbeddedMessage)
{
using (TnefReader embeddedMessageReader = propertyReader.GetEmbeddedMessageReader())
{
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref startAttribute);
writer.StartProperty(propertyTag);
EmailMessage embeddedMessage = this.attachmentData.EmbeddedMessage;
PureTnefMessage pureTnefMessage = embeddedMessage.PureTnefMessage;
Charset textCharset = pureTnefMessage.TextCharset;
using (TnefWriter embeddedMessageWriter = writer.GetEmbeddedMessageWriter(textCharset.CodePage))
{
pureTnefMessage.WriteMessage(embeddedMessageReader, embeddedMessageWriter, scratchBuffer);
}
return(true);
}
}
using (Stream readStream = storagePropertyValue.GetReadStream())
{
int num = readStream.Read(scratchBuffer, 0, scratchBuffer.Length);
if (num > 0)
{
propertyTag = storagePropertyValue.PropertyTag;
if (propertyTag.ValueTnefType == TnefPropertyType.Unicode && TnefPropertyBag.IsLegacyAttribute(attributeTag))
{
return(false);
}
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref startAttribute);
writer.StartProperty(propertyTag);
do
{
writer.WritePropertyRawValue(scratchBuffer, 0, num);
num = readStream.Read(scratchBuffer, 0, scratchBuffer.Length);
}while (num > 0);
}
return(true);
}
}
if (propertyTag.ValueTnefType == TnefPropertyType.String8 && forceUnicode)
{
if (TnefPropertyBag.IsLegacyAttribute(attributeTag))
{
return(false);
}
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref startAttribute);
writer.WriteProperty(propertyTag.ToUnicode(), value);
}
else
{
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref startAttribute);
writer.WriteProperty(propertyTag, value);
}
return(true);
}
internal bool Write(TnefReader reader, TnefWriter writer, TnefAttributeLevel level, bool dropRecipientTable, bool forceUnicode, byte[] scratchBuffer)
{
IDictionary <TnefPropertyTag, object> dictionary = null;
char[] array = null;
bool result;
for (;;)
{
TnefPropertyReader propertyReader = reader.PropertyReader;
if (0 >= propertyReader.PropertyCount)
{
goto IL_37A;
}
TnefAttributeTag attributeTag = reader.AttributeTag;
TnefAttributeLevel attributeLevel = reader.AttributeLevel;
bool flag = true;
while (propertyReader.ReadNextProperty())
{
TnefPropertyTag propertyTag = propertyReader.PropertyTag;
if (TnefPropertyType.Null != propertyTag.ValueTnefType)
{
if (propertyReader.IsNamedProperty)
{
TnefNameId propertyNameId = propertyReader.PropertyNameId;
TnefNameTag key = new TnefNameTag(propertyNameId, propertyTag.ValueTnefType);
int num;
if (this.supportedNamedProperties.TryGetValue(key, out num) && this.properties[num].IsDirty)
{
object obj = this[propertyNameId];
if (obj != null)
{
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref flag);
writer.StartProperty(propertyTag, propertyNameId.PropertySetGuid, propertyNameId.Id);
writer.WritePropertyValue(obj);
continue;
}
continue;
}
}
else
{
TnefPropertyId id = propertyTag.Id;
int num2;
if (this.supportedProperties.TryGetValue(propertyTag, out num2) && this.properties[num2].IsDirty && (this.attachmentData == null || this.attachmentData.EmbeddedMessage == null || TnefAttributeLevel.Attachment != level || TnefAttributeTag.AttachData != attributeTag || TnefPropertyId.AttachData != id))
{
object obj = this[id];
if (obj == null)
{
continue;
}
if (!this.WriteModifiedProperty(writer, reader, propertyTag, obj, forceUnicode, ref flag, scratchBuffer))
{
if (dictionary == null)
{
dictionary = new Dictionary <TnefPropertyTag, object>(TnefPropertyBag.PropertyTagComparer);
}
if (!dictionary.ContainsKey(propertyTag))
{
dictionary.Add(propertyTag, obj);
continue;
}
continue;
}
else
{
if (dictionary != null && dictionary.ContainsKey(propertyTag))
{
dictionary.Remove(propertyTag);
continue;
}
continue;
}
}
}
if (propertyTag.ValueTnefType == TnefPropertyType.String8 && forceUnicode)
{
if (!TnefPropertyBag.IsLegacyAttribute(attributeTag))
{
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref flag);
TnefPropertyBag.WriteUnicodeProperty(writer, propertyReader, propertyTag.ToUnicode(), ref array);
}
}
else if (propertyTag.IsTnefTypeValid)
{
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref flag);
writer.WriteProperty(propertyReader);
}
}
}
if ((TnefAttributeTag.MapiProperties == attributeTag && level == TnefAttributeLevel.Message) || (TnefAttributeTag.Attachment == attributeTag && level == TnefAttributeLevel.Attachment))
{
if (this.newProperties != null)
{
foreach (KeyValuePair <TnefPropertyTag, object> keyValuePair in this.newProperties)
{
object obj = keyValuePair.Value;
if (obj != null)
{
this.WriteModifiedProperty(writer, reader, keyValuePair.Key, obj, forceUnicode, ref flag, scratchBuffer);
}
}
}
if (dictionary != null)
{
foreach (KeyValuePair <TnefPropertyTag, object> keyValuePair2 in dictionary)
{
this.WriteModifiedProperty(writer, reader, keyValuePair2.Key, keyValuePair2.Value, forceUnicode, ref flag, scratchBuffer);
}
}
if (this.newNamedProperties != null)
{
using (IEnumerator <KeyValuePair <TnefNameTag, object> > enumerator3 = this.newNamedProperties.GetEnumerator())
{
while (enumerator3.MoveNext())
{
KeyValuePair <TnefNameTag, object> keyValuePair3 = enumerator3.Current;
object obj = keyValuePair3.Value;
if (obj != null)
{
TnefPropertyTag tag = new TnefPropertyTag((TnefPropertyId)(-32768), keyValuePair3.Key.Type);
if (forceUnicode)
{
tag = tag.ToUnicode();
}
TnefPropertyBag.StartAttributeIfNecessary(writer, attributeTag, attributeLevel, ref flag);
writer.StartProperty(tag, keyValuePair3.Key.Id.PropertySetGuid, keyValuePair3.Key.Id.Id);
writer.WritePropertyValue(obj);
}
}
goto IL_3AC;
}
goto IL_37A;
}
}
IL_3AC:
if (!(result = reader.ReadNextAttribute()) || level != reader.AttributeLevel || TnefAttributeTag.AttachRenderData == reader.AttributeTag)
{
break;
}
continue;
IL_37A:
if (level != TnefAttributeLevel.Message || TnefAttributeTag.RecipientTable != reader.AttributeTag)
{
writer.WriteAttribute(reader);
goto IL_3AC;
}
if (!dropRecipientTable)
{
this.parentMessage.WriteRecipients(reader.PropertyReader, writer, ref array);
goto IL_3AC;
}
goto IL_3AC;
}
return(result);
}
