/// <summary>
/// Initializes a new instance of the <see cref="T:MimeKit.Encodings.QEncoder" /> class.
/// </summary>
/// <remarks>
/// Creates a new rfc2047 quoted-printable encoder.
/// </remarks>
/// <param name="mode">The rfc2047 encoding mode.</param>
public QEncoder(QEncodeMode mode)
{
mask = ((mode == QEncodeMode.Phrase) ? CharType.IsEncodedPhraseSafe : CharType.IsEncodedWordSafe);
}
/// <summary>
/// Initializes a new instance of the <see cref="MimeKit.Encodings.QEncoder"/> class.
/// </summary>
/// <remarks>
/// Creates a new rfc2047 quoted-printable encoder.
/// </remarks>
/// <param name="mode">The rfc2047 encoding mode.</param>
public QEncoder (QEncodeMode mode)
{
mask = mode == QEncodeMode.Phrase ? CharType.IsEncodedPhraseSafe : CharType.IsEncodedWordSafe;
}
static void AppendEncodedWord (StringBuilder str, Encoding charset, string text, int startIndex, int length, QEncodeMode mode)
{
var chars = new char[length];
IMimeEncoder encoder;
byte[] word, encoded;
char encoding;
int len;
text.CopyTo (startIndex, chars, 0, length);
try {
word = CharsetConvert (charset, chars, length, out len);
} catch {
charset = Encoding.UTF8;
word = CharsetConvert (charset, chars, length, out len);
}
if (CharsetRequiresBase64 (charset) || GetBestContentEncoding (word, 0, len) == ContentEncoding.Base64) {
encoder = new Base64Encoder (true);
encoding = 'b';
} else {
encoder = new QEncoder (mode);
encoding = 'q';
}
encoded = new byte[encoder.EstimateOutputLength (len)];
len = encoder.Flush (word, 0, len, encoded);
str.AppendFormat ("=?{0}?{1}?", CharsetUtils.GetMimeCharset (charset), encoding);
for (int i = 0; i < len; i++)
str.Append ((char) encoded[i]);
str.Append ("?=");
}
/// <summary>
/// Initializes a new instance of the <see cref="MimeKit.Encodings.QEncoder"/> class.
/// </summary>
/// <remarks>
/// Creates a new rfc2047 quoted-printable encoder.
/// </remarks>
/// <param name="mode">The rfc2047 encoding mode.</param>
public QEncoder(QEncodeMode mode)
{
mask = mode == QEncodeMode.Phrase ? CharType.IsEncodedPhraseSafe : CharType.IsEncodedWordSafe;
Reset();
}
