cn2jp -- library for code translation between Chinese and Japanese
including Chinese {GB,Big5,HZ} and Japanese (EUC-Jis/Shift-Jis/Jis)

b2j	translate Big5 to Jis/EUC-Jis/Shift-Jis/Kuten
g2j	translate GB to Jis/EUC-Jis/Shift-Jis/Kuten
j2b	translate any Jis to Big5
g2b	translate GB to Big5
j2g	translate any Jis to GB
b2g	translate Big5 to GB