x2p/hash.h

   1 /* $RCSfile: hash.h,v $$Revision: 4.1 $$Date: 92/08/07 18:29:21 $
   2  *
   3  *    Copyright (c) 1991-1997, Larry Wall
   4  *
   5  *    You may distribute under the terms of either the GNU General Public
   6  *    License or the Artistic License, as specified in the README file.
   7  *
   8  * $Log:        hash.h,v $
   9  */
  10
  11 #define FILLPCT 60              /* don't make greater than 99 */
  12
  13 #ifdef DOINIT
  14 char coeff[] = {
  15                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  16                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  17                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  18                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  19                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  20                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  21                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1,
  22                 61,59,53,47,43,41,37,31,29,23,17,13,11,7,3,1};
  23 #else
  24 extern char coeff[];
  25 #endif
  26
  27 typedef struct hentry HENT;
  28
  29 struct hentry {
  30     HENT        *hent_next;
  31     char        *hent_key;
  32     STR         *hent_val;
  33     int         hent_hash;
  34 };
  35
  36 struct htbl {
  37     HENT        **tbl_array;
  38     int         tbl_max;
  39     int         tbl_fill;
  40     int         tbl_riter;      /* current root of iterator */
  41     HENT        *tbl_eiter;     /* current entry of iterator */
  42 };
  43
  44 bool hdelete _((HASH *tb, char *key));
  45 STR * hfetch _(( HASH *tb, char *key ));
  46 int hiterinit _(( HASH *tb ));
  47 char * hiterkey _(( HENT *entry ));
  48 HENT * hiternext _(( HASH *tb ));
  49 STR * hiterval _(( HENT *entry ));
  50 HASH * hnew _(( void ));
  51 void hsplit _(( HASH *tb ));
  52 bool hstore _(( HASH *tb, char *key, STR *val ));