public bool IsClose(String line, MessageReader reader)
{
line = line.TrimEnd(' ');
if (line == closeBoundary)
{
RemoveBoundary(this);
return(true);
}
// any open or close boundary down in the stack closes all boundaries above in the stack
Boundary b = boundaries.FindLast(by => (by.closeBoundary == line || by.openBoundary == line));
if (b != null)
{
RemoveBoundary(b);
reader.PushCacheLine(line);
return(true);
}
return(false);
}
protected async Task ConsumeToEnd(MessageReader reader)
{
ParseResult res = ParseResult.Ok;
while (res != ParseResult.Eof)
{
String line = await reader.ReadLineAsync();
if (line == null)
{
break;
}
else if (EmailParser.IsPostmark(line))
{
reader.PushCacheLine(line);
break;
}
else
{
WriteWithCrlf(line);
}
}
}
public bool IsClose(String line, MessageReader reader)
{
line = line.TrimEnd(' ');
if (line == closeBoundary)
{
RemoveBoundary(this);
return true;
}
// any open or close boundary down in the stack closes all boundaries above in the stack
Boundary b = boundaries.FindLast(by => (by.closeBoundary == line || by.openBoundary == line));
if (b != null)
{
RemoveBoundary(b);
reader.PushCacheLine(line);
return true;
}
return false;
}
public async Task<ParseResult> Parse(MessageReader reader, ContentType type = ContentType.Text,
ContentSubtype subtype = ContentSubtype.Plain, Boundary boundary = null)
{
if (type == ContentType.Multipart)
{
dataType = DataType.Multipart;
while (true)
{
String line = await reader.ReadLineAsync();
if (line == null)
{
SetSize();
return ParseResult.Eof;
}
else if (EmailParser.IsPostmark(line))
{
// consumed too much, probably missing boundary?
reader.PushCacheLine(line);
SetSize();
return ParseResult.Postmark;
}
WriteWithCrlf(line);
// find open boundary
if (boundary.IsOpen(line))
{
Email email = null;
ParseResult res;
do
{
// consume all parts, consisting of header (optional) and content
// the boundary token delimets the part
// the close boundary completes multipart parsing
// content in the multipart is responsible for consuming it's delimeter (end)
// exception is the last part which is also multipart
email = new Email(entity);
Add(email);
} while ((res = await email.Parse(reader, type, subtype, boundary)) == ParseResult.OkMultipart); // Ok
// if the last part is a multipart or message? itself then it doesn't consume the close boundary
// or more parts, continue parsing until all parts and close boundary are consumed
/*if (Ok(res) && (data.Last<Email>().content.dataType == DataType.Multipart ||
data.Last<Email>().content.dataType == DataType.Message))*/
if (res == ParseResult.Ok && boundary.NotClosed())
continue;
if (res != ParseResult.Failed)
SetSize();
return res;
}
else if (boundary.IsClose(line, reader))
{
SetSize();
return ParseResult.Ok; // OkMultipart
}
}
}
else if (type == ContentType.Message)
{
dataType = DataType.Message;
Email email = new Email(entity);
Add(email);
ParseResult res = await email.Parse(reader, type, subtype, boundary);
if (res != ParseResult.Failed)
SetSize();
return res;
}
else
{
dataType = DataType.Data;
while (true)
{
String line = await reader.ReadLineAsync();
if (line == null)
{
SetSize();
return ParseResult.Eof;
}
else if (EmailParser.IsPostmark(line))
{
// consumed too much, probably closing boundary is missing ?
reader.PushCacheLine(line);
SetSize();
return ParseResult.Postmark;
}
else if (boundary != null && boundary.IsOpen(line))
{
SetSize();
RewindLastCrlfSize();
WriteWithCrlf(line);
return ParseResult.OkMultipart; //Ok
}
else if (boundary != null && boundary.IsClose(line, reader))
{
SetSize();
RewindLastCrlfSize();
WriteWithCrlf(line);
return ParseResult.Ok; //OkMultipart
}
else
WriteWithCrlf(line);
}
}
}
protected async Task ConsumeToEnd(MessageReader reader)
{
ParseResult res = ParseResult.Ok;
while (res != ParseResult.Eof)
{
String line = await reader.ReadLineAsync();
if (line == null)
break;
else if (EmailParser.IsPostmark(line))
{
reader.PushCacheLine(line);
break;
}
else
WriteWithCrlf(line);
}
}
public async Task <ParseResult> Parse(MessageReader reader, ContentType type = ContentType.Text,
ContentSubtype subtype = ContentSubtype.Plain, Boundary boundary = null)
{
if (type == ContentType.Multipart)
{
dataType = DataType.Multipart;
while (true)
{
String line = await reader.ReadLineAsync();
if (line == null)
{
SetSize();
return(ParseResult.Eof);
}
else if (EmailParser.IsPostmark(line))
{
// consumed too much, probably missing boundary?
reader.PushCacheLine(line);
SetSize();
return(ParseResult.Postmark);
}
WriteWithCrlf(line);
// find open boundary
if (boundary.IsOpen(line))
{
Email email = null;
ParseResult res;
do
{
// consume all parts, consisting of header (optional) and content
// the boundary token delimets the part
// the close boundary completes multipart parsing
// content in the multipart is responsible for consuming it's delimeter (end)
// exception is the last part which is also multipart
email = new Email(entity);
Add(email);
} while ((res = await email.Parse(reader, type, subtype, boundary)) == ParseResult.OkMultipart); // Ok
// if the last part is a multipart or message? itself then it doesn't consume the close boundary
// or more parts, continue parsing until all parts and close boundary are consumed
/*if (Ok(res) && (data.Last<Email>().content.dataType == DataType.Multipart ||
* data.Last<Email>().content.dataType == DataType.Message))*/
if (res == ParseResult.Ok && boundary.NotClosed())
{
continue;
}
if (res != ParseResult.Failed)
{
SetSize();
}
return(res);
}
else if (boundary.IsClose(line, reader))
{
SetSize();
return(ParseResult.Ok); // OkMultipart
}
}
}
else if (type == ContentType.Message)
{
dataType = DataType.Message;
Email email = new Email(entity);
Add(email);
ParseResult res = await email.Parse(reader, type, subtype, boundary);
if (res != ParseResult.Failed)
{
SetSize();
}
return(res);
}
else
{
dataType = DataType.Data;
while (true)
{
String line = await reader.ReadLineAsync();
if (line == null)
{
SetSize();
return(ParseResult.Eof);
}
else if (EmailParser.IsPostmark(line))
{
// consumed too much, probably closing boundary is missing ?
reader.PushCacheLine(line);
SetSize();
return(ParseResult.Postmark);
}
else if (boundary != null && boundary.IsOpen(line))
{
SetSize();
RewindLastCrlfSize();
WriteWithCrlf(line);
return(ParseResult.OkMultipart); //Ok
}
else if (boundary != null && boundary.IsClose(line, reader))
{
SetSize();
RewindLastCrlfSize();
WriteWithCrlf(line);
return(ParseResult.Ok); //OkMultipart
}
else
{
WriteWithCrlf(line);
}
}
}
}