Which one to choose: '0x80', '0x81', or '0x82'? [UCS2 Type 선택 기준]

Step1. Whenever possible, use '0x81' format.

 

      Strong point  : '0x81' offers smallest number of memory required, 
                           i.e. (3 + N) bytes. 

 

      Weak point    : this format only works for character set containing 128 characters 
                            that lies between 'XX00' to 'XX7F', or between 'XX80' to 'XXFF'.

 

Step2. If '0x81' is impossible, try the '0x82' format

 

      Strong point  : '0x82' offers slightly bigger number of memory required compared

 

                           to '0x81' format,

 

                           i.e. (4 + N) bytes

 

      Weak point    : this format only works for character set containing 128 characters

 

 

Step3. If '0x81' and '0x82' is not possible, you must use '0x80'

 

      Strong point  : '0x80' can cover all UCS2 range from '0000' to 'FFFF'

 

      Weak point    : the number of bytes required is large, i.e. (1 + 2 * N) bytes