hash.h

   1 #include "portable_io.h"
   2 #define HASH_TYPE unsigned char
   3
   4 //#include "super_fast_hash.h"
   5 //#define hash_function super_fast_hash
   6 #include "sha1.h"
   7 #define hash_function sha1_hash
   8
   9 static inline int hash_compare(HASH_TYPE *h1, HASH_TYPE *h2)
  10 {
  11         int i;
  12
  13         for (i = 0; i < HASH_SIZE; i++) {
  14                 if (h1[i] < h2[i])
  15                         return -1;
  16                 if (h1[i] > h2[i])
  17                         return 1;
  18         }
  19         return 0;
  20 }
  21
  22 static inline void hash_to_asc(HASH_TYPE *hash, char *asc)
  23 {
  24         int i;
  25         const char hexchar[] = "0123456789abcdef";
  26
  27         for (i = 0; i < HASH_SIZE; i++) {
  28                 asc[2 * i] = hexchar[hash[i] >> 4];
  29                 asc[2 * i + 1] = hexchar[hash[i] & 0xf];
  30         }
  31         asc[2 * HASH_SIZE] = '\0';
  32 }