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#include "list.ih"
void listcleanup(LISTVAR_ *list, size_t toRemove)
{
if (size(list) == toRemove) /* remove all ? */
{
listDestructor(list); /* then wipe out the list */
*list = listConstructor(); /* and return a new, empty one */
return;
}
{
/* walk along all elements */
char **empty = element(list);
char **end = empty + size(list);
for ( ; empty != end; ++empty)
{
if (*empty) /* next element if non-empty */
continue;
char **used = empty + 1; /* beyond the empty one: find used */
for (; used != end && *used == 0; ++used)
; /* find the next one in use */
if (used == end) /* at the end */
break;
*empty = *used; /* swap `used' and `empty' */
*used = 0;
}
}
size(list) -= toRemove; /* reduce the list's size */
}
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