1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* libtu/iterable.c
*
* Copyright (c) Tuomo Valkonen 2005.
*
* You may distribute and modify this library under the terms of either
* the Clarified Artistic License or the GNU LGPL, version 2.1 or later.
*/
#include "iterable.h"
void *iterable_nth(uint n, VoidIterator *iter, void *st)
{
void *p;
while(1){
p=iter(st);
if(p==NULL || n==0)
break;
n--;
}
return p;
}
bool iterable_is_on(void *p, VoidIterator *iter, void *st)
{
while(1){
void *p2=iter(st);
if(p2==NULL)
return FALSE;
if(p==p2)
return TRUE;
}
}
void *iterable_find(BoolFilter *f, void *fparam,
VoidIterator *iter, void *st)
{
while(1){
void *p=iter(st);
if(p==NULL)
return NULL;
if(f(p, fparam))
return p;
}
}
|
