public byte[] decodeBinary(string text)
{
MemoryStream bin = new MemoryStream();
LL1 rr = new LL1(text);
while (!rr.EOF)
{
char c = rr.read();
if (c == '=')
{
string t = rr.readStr(2);
if (t == null)
{
bin.WriteByte((byte)'=');
}
else
{
bin.WriteByte(Convert.ToByte(t, 16));
}
}
else
{
bin.WriteByte((byte)c);
}
}
return(bin.ToArray());
}
public static string decode(string text)
{
LL1 rr = new LL1(text);
StringBuilder res = new StringBuilder();
while (!rr.EOF)
{
if (rr.compare("=?", true))
{
res.Append(parseEncode(rr));
}
else
{
res.Append(rr.read());
}
}
return(res.ToString());
}
static string parseEncode(LL1 rr)
{
Encoding enc = null;
if (rr.compareNoCase("ISO-2022-JP?B?", true))
{
enc = Encoding.GetEncoding("iso-2022-jp");
}
else if (rr.compareNoCase("SHIFT_JIS?B?", true))
{
enc = Encoding.GetEncoding(932);
}
else if (rr.compareNoCase("UTF-8?B?", true))
{
enc = Encoding.UTF8;
}
if (enc != null)
{
string bEnc = "";
while (true)
{
if (rr.compare("?=", true))
{
break;
}
string text = rr.readStr(4);
if (text == null)
{
throw new ArgumentException("不正なSubjectEncoding", rr.peekStr(10));
}
bEnc += text;
}
return(enc.GetString(Convert.FromBase64String(bEnc)));
}
else
{
throw new NotSupportedException("不明な文字コードでした");
}
}
public byte[] decodeBinary(string text) {
MemoryStream bin = new MemoryStream();
LL1 rr = new LL1(text);
while (!rr.EOF) {
char c = rr.read();
if (c == '=') {
string t = rr.readStr(2);
if (t == null) bin.WriteByte((byte)'=');
else bin.WriteByte(Convert.ToByte(t, 16));
}
else {
bin.WriteByte((byte)c);
}
}
return bin.ToArray();
}
static string parseEncode(LL1 rr) {
Encoding enc = null;
if (rr.compareNoCase("ISO-2022-JP?B?", true))
enc = Encoding.GetEncoding("iso-2022-jp");
else if (rr.compareNoCase("SHIFT_JIS?B?", true))
enc = Encoding.GetEncoding(932);
else if (rr.compareNoCase("UTF-8?B?", true))
enc = Encoding.UTF8;
if (enc != null) {
string bEnc = "";
while (true) {
if (rr.compare("?=", true)) {
break;
}
string text = rr.readStr(4);
if (text == null)
throw new ArgumentException("不正なSubjectEncoding", rr.peekStr(10));
bEnc += text;
}
return enc.GetString(Convert.FromBase64String(bEnc));
}
else {
throw new NotSupportedException("不明な文字コードでした");
}
}
public static string decode(string text) {
LL1 rr = new LL1(text);
StringBuilder res = new StringBuilder();
while (!rr.EOF) {
if (rr.compare("=?", true)) {
res.Append(parseEncode(rr));
}
else {
res.Append(rr.read());
}
}
return res.ToString();
}