ABAP货币大小写转换函数

FUNCTION zf_cn_num.
*"----------------------------------------------------------------------
*"*"本地接口：
*"  IMPORTING
*"     REFERENCE(IV_MONEY) TYPE  BSEG-DMBTR
*"  EXPORTING
*"     REFERENCE(EV_MONEY) TYPE  CHAR100
*"----------------------------------------------------------------------
  IF iv_money = 0.
    ev_money = '零'.
    EXIT.
  ENDIF.
  DATA:money_str(33).
  money_str = iv_money.
  CONDENSE money_str NO-GAPS.
  IF money_str CN '0123456789. '.
    RAISE wrong_money.
  ENDIF.
  DATA:i TYPE i.
  IF money_str CS '.'.
    i = sy-fdpos + 1.
    money_str+sy-fdpos = money_str+i.
  ENDIF.
  CONDENSE money_str NO-GAPS.
  DATA:units_off TYPE i,
       curnt_off TYPE i.
  DATA:lastd  TYPE n,curntd TYPE n.
  DATA:cword(2),weight(2).
  DATA:units(30)      VALUE '分角元拾佰仟万拾佰仟亿拾佰仟万',
       digts(20)      VALUE '零壹贰叁肆伍陆柒捌玖'.
* clear:ev_money,units_off.
  lastd = 0.
  curnt_off = strlen( money_str ) - 1.
  WHILE curnt_off >= 0.
    curntd = money_str+curnt_off(1).
    i = curntd.
    cword = digts+i(1).
    weight = units+units_off(1).
    i = units_off / 1.
    IF curntd = 0.             "Current digit is 0
      IF i = 2 OR i = 6 OR i = 10.
        CLEAR:cword.
        IF curnt_off = 0.
          CLEAR:weight.
        ENDIF.
      ELSEIF lastd = 0.
        CLEAR:cword,weight.
      ELSE.
        CLEAR:weight.
      ENDIF.
    ENDIF.
    CONCATENATE cword weight ev_money INTO ev_money.
    lastd = curntd.
    SUBTRACT 1 FROM curnt_off.
    ADD 1 TO units_off.
  ENDWHILE.
  IF ev_money NS '分'.
    CONCATENATE ev_money '整' INTO ev_money.
  ELSE.
    cword = ev_money.
    IF cword = '零'.
      SHIFT ev_money BY 1 PLACES.
    ENDIF.
  ENDIF.
ENDFUNCTION.