NAME
RkCvtZen - convert ASCII characters and single-width katakana to
double-width characters
SYNOPSIS
#include <canna/RK.h>
int RkCvtZen(dst, maxdst, src, srclen)
unsigned char *dst;
int maxdst;
unsigned char *src;
int srclen;
DESCRIPTION
RkCvtZen converts the srclen bytes of ASCII character and single-width
katakana data to double-width character, starting at the area src. A
null character in src is not interpreted as the end of the string. The
conversion result is stored in the area dst. Characters that are not
subject to conversion are copied as they area. The conversion result
is truncated to adjust to character boundaries in the EUC code when its
byte length exceeds maxdst -1. dst is padded with null characters at
the end if possible. EUC code is used to represent both src and dst.
NULL can be specified in dst. NULL overrides the entire conversion
result.
RETURN VALUE
This function returns the byte length of the conversion result, or
returns 0 if the value of maxdst is invalid.