public static BinaryReader CreateBinaryReader(Stream stream, ContentTransferEncodingMethod encoding, Encoding charset)
{
if (charset == null)
return new BinaryReader(CreateDecodingStream(stream, encoding));
else
return new BinaryReader(CreateDecodingStream(stream, encoding), charset);
}
public static Stream CreateEncodingStream(Stream contentStream, ContentTransferEncodingMethod transferEncoding, MimeFormat format)
{
if (contentStream == null)
throw new ArgumentNullException("contentStream");
if (format == null)
throw new ArgumentNullException("format");
switch (transferEncoding) {
case ContentTransferEncodingMethod.SevenBit:
case ContentTransferEncodingMethod.EightBit:
case ContentTransferEncodingMethod.Binary:
return contentStream;
case ContentTransferEncodingMethod.Base64:
return new Base64ContentEncodingStream(contentStream, format);
case ContentTransferEncodingMethod.QuotedPrintable:
return new QuotedPrintableContentEncodingStream(contentStream, format);
case ContentTransferEncodingMethod.UUEncode:
case ContentTransferEncodingMethod.GZip64:
default:
throw new NotSupportedException(string.Format("unsupported transfer encoding: {0}", transferEncoding));
}
}
public static Stream CreateEncodingStream(Stream contentStream, ContentTransferEncodingMethod transferEncoding)
{
return CreateEncodingStream(contentStream, transferEncoding, MimeFormat.Unspecified);
}
public void WriteContent(byte[] content, int index, int count, ContentTransferEncodingMethod transferEncoding)
{
WriteContent(transferEncoding, delegate(BinaryWriter writer) {
writer.Write(content, index, count);
});
}
public void WriteContent(byte[] content, ContentTransferEncodingMethod transferEncoding)
{
WriteContent(content, 0, content.Length, transferEncoding);
}
public void WriteContent(string content, ContentTransferEncodingMethod transferEncoding, Encoding charset)
{
WriteContent(transferEncoding, charset, delegate(StreamWriter writer) {
writer.Write(content);
});
}
/// <remarks>do not close supplied writer</remarks>
public void WriteContent(ContentTransferEncodingMethod transferEncoding, Action<BinaryWriter> write)
{
if (write == null)
throw new ArgumentNullException("write");
this.Charset = Charsets.ISO8859_1;
this.TransferEncoding = transferEncoding;
var writer = Encode.Encoder.CreateContentBinaryWriter(this);
write(writer);
writer.Flush();
if (writer.BaseStream is Encode.ContentEncodingStream)
(writer.BaseStream as Encode.ContentEncodingStream).FlushFinalBlock();
}
/// <remarks>do not close supplied writer</remarks>
public void WriteContent(ContentTransferEncodingMethod transferEncoding, Encoding charset, Action<StreamWriter> write)
{
if (charset == null)
throw new ArgumentNullException("charset");
if (write == null)
throw new ArgumentNullException("write");
this.Charset = charset;
this.TransferEncoding = transferEncoding;
var writer = Encode.Encoder.CreateContentTextWriter(this);
write(writer);
writer.Flush();
if (writer.BaseStream is Encode.ContentEncodingStream)
(writer.BaseStream as Encode.ContentEncodingStream).FlushFinalBlock();
}
public static Stream CreateDecodingStream(Stream stream, ContentTransferEncodingMethod encoding)
{
if (stream == null)
throw new ArgumentNullException("stream");
switch (encoding) {
case ContentTransferEncodingMethod.SevenBit:
case ContentTransferEncodingMethod.EightBit:
case ContentTransferEncodingMethod.Binary:
return stream;
case ContentTransferEncodingMethod.Base64:
return new CryptoStream(stream, new FromBase64Transform(FromBase64TransformMode.IgnoreWhiteSpaces), CryptoStreamMode.Read);
case ContentTransferEncodingMethod.QuotedPrintable:
return new CryptoStream(stream, new FromQuotedPrintableTransform(), CryptoStreamMode.Read);
case ContentTransferEncodingMethod.UUEncode:
case ContentTransferEncodingMethod.GZip64:
default:
throw new NotSupportedException(string.Format("unsupported content transfer encoding: {0}", encoding));
}
}
public static BinaryReader CreateBinaryReader(Stream stream, ContentTransferEncodingMethod encoding)
{
return CreateBinaryReader(stream,
encoding,
null);
}
public static string GetEncodingName(ContentTransferEncodingMethod method)
{
switch (method) {
case ContentTransferEncodingMethod.SevenBit: return "7bit";
case ContentTransferEncodingMethod.EightBit: return "8bit";
case ContentTransferEncodingMethod.Binary: return "binary";
case ContentTransferEncodingMethod.Base64: return "base64";
case ContentTransferEncodingMethod.QuotedPrintable: return "quoted-printable";
case ContentTransferEncodingMethod.UUEncode: return "x-uuencode";
case ContentTransferEncodingMethod.GZip64: return "x-gzip64";
default:
throw new NotSupportedException(string.Format("unsupported content transfer encoding: {0}",
method));
}
}
public static StreamReader CreateTextReader(Stream stream, ContentTransferEncodingMethod encoding, Encoding charset)
{
if (encoding == ContentTransferEncodingMethod.Binary)
throw new InvalidOperationException("can't create TextReader from message of binary transfer encoding");
return new StreamReader(CreateDecodingStream(stream, encoding), charset);
}
public static MimeHeader CreateContentTransferEncoding(MimeFormat format, ContentTransferEncodingMethod transferEncoding)
{
return new MimeHeader(ContentTransferEncoding.HeaderName,
format,
new[] {new MimeHeaderFragment(ContentTransferEncoding.GetEncodingName(transferEncoding))});
}
public static MimeHeader CreateContentTransferEncoding(ContentTransferEncodingMethod transferEncoding)
{
return CreateContentTransferEncoding(null, transferEncoding);
}
