On Thu, Apr 27, 2006 at 09:32:52PM -0700, Ben Pfaff wrote:
John Darrington <[EMAIL PROTECTED]> writes:
> Any objections if we change the signature of data_out, so that the
> first argument is char ** or struct string * , and have the function
> allocate the required amount of storage?
>
>
> Right now, we never know how big a string needs to be passed to it.
We don't? The string has to be as wide as the field width, fp->w.
I stand corrected. We do know, but it's non constant. It might be 1
on the first call and 10000 the next.
Perhaps I should explain my motives. I want to append the result to a struct
string. The only way I can currently do that is to violate the encapsulation
of struct string.
{
struct string s;
ds_init(&s);
.
.
.
x = ds_length(&s);
/* Somehow make sure that s has sufficient length */
data_out (ds_c_str(&s)+x, &v->print, case_data (c, v->fv));
}
J'
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