load_dir.h

   1 /*
   2  * Copyright Timo Hirvonen
   3  */
   4
   5 #ifndef _LOAD_DIR_H
   6 #define _LOAD_DIR_H
   7
   8 #include <sys/stat.h>
   9 #include <stdlib.h>
  10 #include <dirent.h>
  11
  12 struct directory {
  13         DIR *d;
  14         int len;
  15         /* we need stat information for symlink targets */
  16         int is_link;
  17         /* stat() information. ie. for the symlink target */
  18         struct stat st;
  19         char path[1024];
  20 };
  21
  22 int dir_open(struct directory *dir, const char *name);
  23 void dir_close(struct directory *dir);
  24 const char *dir_read(struct directory *dir);
  25
  26
  27 struct ptr_array {
  28         /* allocated with malloc(). contains pointers */
  29         void *ptrs;
  30         int alloc;
  31         int count;
  32 };
  33
  34 /* ptr_array.ptrs is either char ** or struct dir_entry ** */
  35 struct dir_entry {
  36         mode_t mode;
  37         char name[0];
  38 };
  39
  40 #define PTR_ARRAY(name) struct ptr_array name = { NULL, 0, 0 }
  41
  42 void ptr_array_add(struct ptr_array *array, void *ptr);
  43
  44 static inline void ptr_array_plug(struct ptr_array *array)
  45 {
  46         ptr_array_add(array, NULL);
  47         array->count--;
  48 }
  49
  50 static inline void ptr_array_sort(struct ptr_array *array,
  51                 int (*cmp)(const void *a, const void *b))
  52 {
  53         int count = array->count;
  54         if (count)
  55                 qsort(array->ptrs, count, sizeof(void *), cmp);
  56 }
  57
  58 #endif