git.ozlabs.org Git - ccan/blob - ccan/list/_info.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "config.h"
   4
   5 /**
   6  * list - double linked list routines
   7  *
   8  * The list header contains routines for manipulating double linked lists.
   9  * It defines two types: struct list_head used for anchoring lists, and
  10  * struct list_node which is usually embedded in the structure which is placed
  11  * in the list.
  12  *
  13  * Example:
  14  *      #include <err.h>
  15  *      #include "list/list.h"
  16  *
  17  *      struct parent {
  18  *              const char *name;
  19  *              struct list_head children;
  20  *              unsigned int num_children;
  21  *      };
  22  *
  23  *      struct child {
  24  *              const char *name;
  25  *              struct list_node list;
  26  *      };
  27  *
  28  *      int main(int argc, char *argv[])
  29  *      {
  30  *              struct parent p;
  31  *              struct child *c;
  32  *              unsigned int i;
  33  *
  34  *              if (argc < 2)
  35  *                      errx(1, "Usage: %s parent children...", argv[0]);
  36  *
  37  *              p.name = argv[1];
  38  *              for (i = 2; i < argc, i++) {
  39  *                      c = malloc(sizeof(*c));
  40  *                      c->name = argv[i];
  41  *                      list_add(&p.children, &c->list);
  42  *                      p.num_children++;
  43  *              }
  44  *
  45  *              printf("%s has %u children:", p.name, p.num_children);
  46  *              list_for_each(&p.children, c, list)
  47  *                      printf("%s ", c->name);
  48  *              printf("\n");
  49  *              return 0;
  50  *      }
  51  *
  52  * Licence: LGPL (2 or any later version)
  53  */
  54 int main(int argc, char *argv[])
  55 {
  56         if (argc != 2)
  57                 return 1;
  58
  59         if (strcmp(argv[1], "depends") == 0) {
  60                 printf("ccan/container_of\n");
  61                 return 0;
  62         }
  63
  64         return 1;
  65 }