static int
add_column_width (int column, char const *buf, size_t bufsize)
{
size_t width;
unsigned int remaining_columns = INT_MAX - column;
if (buf)
{
if (INT_MAX / 2 <= bufsize)
return INT_MAX;
width = mbsnwidth (buf, bufsize, 0);
}
else
width = bufsize;
return width <= remaining_columns ? column + width : INT_MAX;
}
/* Returns the number of columns needed to represent the multibyte
character string pointed to by STRING. If a non-printable character
occurs, and MBSW_REJECT_UNPRINTABLE is specified, -1 is returned.
With flags = MBSW_REJECT_INVALID | MBSW_REJECT_UNPRINTABLE, this is
the multibyte analogue of the wcswidth function. */
int
mbswidth (const char *string, int flags)
{
return mbsnwidth (string, strlen (string), flags);
}
static int
rline_calc_point()
{
return (int)mbsnwidth(rl_line_buffer, rl_point, 0);
}
