"《UTF-8与GB2312之间的互换》的改进"的再改进。 加大了一点转换见的Buffer，避免溢出。 和修复了Unicode转UTF时的小Bug。-Improvement of exchange between UTF-8 and GB2312. Add little more buffer when translate. Fix bug from unicode to UTF.

能够编码解码 主要是对utf8 unicode gb2312等字符集的编解码-Capable codec mainly for utf8 unicode gb2312 character set such as codec