On Wed, May 23, 2012 at 11:23 AM, Tom Browder <[email protected]> wrote:
...
> I envision them like this:
On more thought, maybe slightly different versions (size_t and char
inputs, int returns):
int
bu_vls_readc(struct bu_vls *vp, const size_t pos)
{
BU_CK_VLS(vp);
/* error to request past ending char */
if (pos >= vp->vls_len)
return -1;
else
return (int)vp->vls_str[vp->vls_offset + pos];
}
int
bu_vls_exchc(struct bu_vls *vp, const size_t pos, const char c)
{
BU_CK_VLS(vp);
/* error to request past ending char */
if (pos >= vp->vls_len)
return -1;
else {
vp->vls_str[vp->vls_offset + vp->pos] = c;
/* allow the caller to check for proper handling */
return (int)vp->vls_str[vp->vls_offset + vp->pos];
}
}
-Tom
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