int StrBufDecodeBase64(StrBuf *Buf);
int StrBufDecodeHex(StrBuf *Buf);
int StrBufRFC2047encode(StrBuf **target, const StrBuf *source);
int StrBufDecodeBase64(StrBuf *Buf);
int StrBufDecodeHex(StrBuf *Buf);
int StrBufRFC2047encode(StrBuf **target, const StrBuf *source);