lunaix-os/includes/lunaix/ds/hstr.h

   1 #ifndef __LUNAIX_HSTR_H
   2 #define __LUNAIX_HSTR_H
   3
   4 #include <lib/hash.h>
   5
   6 #define HSTR_FULL_HASH 32
   7
   8 struct hstr
   9 {
  10     u32_t hash;
  11     u32_t len;
  12     const char* value;
  13 };
  14
  15 #define HSTR(str, length)                                                      \
  16     (struct hstr)                                                              \
  17     {                                                                          \
  18         .len = (length), .value = (str)                                        \
  19     }
  20
  21 #define HHSTR(str, length, strhash)                                            \
  22     (struct hstr)                                                              \
  23     {                                                                          \
  24         .len = (length), .value = (str), .hash = (strhash)                     \
  25     }
  26
  27 #define HSTR_EQ(str1, str2) ((str1)->hash == (str2)->hash)
  28
  29 inline void
  30 hstr_rehash(struct hstr* hash_str, u32_t truncate_to)
  31 {
  32     hash_str->hash = strhash_32(hash_str->value, truncate_to);
  33 }
  34
  35 void
  36 hstrcpy(struct hstr* dest, struct hstr* src);
  37
  38 #endif /* __LUNAIX_HSTR_H */