tests/opkg_active_list_test.c

   1 /* opkg_active_list.c - the opkg package management system
   2
   3    Tick Chen <tick@openmoko.com>
   4
   5    Copyright (C) 2008 Openmoko
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include <stdlib.h>
  19 #include <libopkg/active_list.h>
  20 #include <active_list.h>
  21 #include <stdio.h>
  22
  23 struct active_test {
  24         char *str;
  25         struct active_list list;
  26 };
  27
  28 static struct active_test *active_test_new(char *str)
  29 {
  30         struct active_test *ans =
  31             (struct active_test *)calloc(1, sizeof(struct active_test));
  32         ans->str = str;
  33         active_list_init(&ans->list);
  34         return ans;
  35 }
  36
  37 static void active_test_add(struct active_list *head, struct active_test *node)
  38 {
  39         active_list_add(head, &node->list);
  40 }
  41
  42 /*
  43 ．--A---B----C----D-----E----F
  44     |             |__k---L
  45     |                    |_ N
  46     |__ G ---H ---I---J
  47              |_M      |_O
  48
  49 Then the sequence will be
  50 +: G M H I O J A B K N L C D E F
  51 -: F E D C L N K B A J O I H M G
  52 */
  53 static void make_list(struct active_list *head)
  54 {
  55         struct active_test *A = active_test_new("A");
  56         struct active_test *B = active_test_new("B");
  57         struct active_test *C = active_test_new("C");
  58         struct active_test *D = active_test_new("D");
  59         struct active_test *E = active_test_new("E");
  60         struct active_test *F = active_test_new("F");
  61         struct active_test *G = active_test_new("G");
  62         struct active_test *H = active_test_new("H");
  63         struct active_test *I = active_test_new("I");
  64         struct active_test *J = active_test_new("J");
  65         struct active_test *K = active_test_new("K");
  66         struct active_test *L = active_test_new("L");
  67         struct active_test *M = active_test_new("M");
  68         struct active_test *N = active_test_new("N");
  69         struct active_test *O = active_test_new("O");
  70
  71         active_test_add(head, A);
  72         active_test_add(head, B);
  73         active_test_add(head, C);
  74         active_test_add(head, D);
  75         active_test_add(head, E);
  76         active_test_add(head, F);
  77         active_test_add(head, G);
  78         active_test_add(head, H);
  79         active_test_add(head, I);
  80         active_test_add(head, J);
  81         active_test_add(head, K);
  82         active_test_add(head, L);
  83         active_test_add(head, M);
  84         active_test_add(head, N);
  85         active_test_add(head, O);
  86 }
  87
  88 static void show_list(struct active_list *head)
  89 {
  90         struct active_list *ptr;
  91         struct active_test *test;
  92         for (ptr = active_list_next(head, NULL); ptr;
  93              ptr = active_list_next(head, ptr)) {
  94                 test = list_entry(ptr, struct active_test, list);
  95                 printf("%s ", test->str);
  96         }
  97         printf("\n");
  98 }
  99
 100 int main(void)
 101 {
 102         struct active_list head;
 103         struct active_list *ptr;
 104         struct active_test *test;
 105         active_list_init(&head);
 106         make_list(&head);
 107
 108         printf("pos order: ");
 109         show_list(&head);
 110 /*    for(ptr = active_list_next(&head, &head); ptr ;ptr = active_list_next(&head, ptr)) {
 111         test = list_entry(ptr, struct active_test, list);
 112         printf ("%s ",test->str);
 113     }*/
 114         printf("neg order: ");
 115         for (ptr = active_list_prev(&head, &head); ptr;
 116              ptr = active_list_prev(&head, ptr)) {
 117                 test = list_entry(ptr, struct active_test, list);
 118                 printf("%s ", test->str);
 119         }
 120         printf("after clear: ");
 121         active_list_clear(&head);
 122         for (ptr = active_list_next(&head, NULL); ptr;
 123              ptr = active_list_next(&head, ptr)) {
 124                 test = list_entry(ptr, struct active_test, list);
 125                 printf("%s ", test->str);
 126         }
 127         printf("\n");
 128
 129 }