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1 | /* $RCSfile: hash.h,v $$Revision: 4.0.1.1 $$Date: 91/06/07 11:10:33 $ |
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2 | * |
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3 | * Copyright (c) 1991, Larry Wall |
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4 | * |
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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. |
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7 | * |
8 | * $Log: hash.h,v $ |
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9 | * Revision 4.0.1.1 91/06/07 11:10:33 lwall |
10 | * patch4: new copyright notice |
11 | * |
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12 | * Revision 4.0 91/03/20 01:22:38 lwall |
13 | * 4.0 baseline. |
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14 | * |
15 | */ |
16 | |
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17 | #define FILLPCT 80 /* don't make greater than 99 */ |
18 | #define DBM_CACHE_MAX 63 /* cache 64 entries for dbm file */ |
19 | /* (resident array acts as a write-thru cache)*/ |
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20 | |
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21 | #define COEFFSIZE (16 * 8) /* size of coeff array */ |
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22 | |
23 | typedef struct hentry HENT; |
24 | |
25 | struct hentry { |
26 | HENT *hent_next; |
27 | char *hent_key; |
28 | STR *hent_val; |
29 | int hent_hash; |
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30 | int hent_klen; |
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31 | }; |
32 | |
33 | struct htbl { |
34 | HENT **tbl_array; |
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35 | int tbl_max; /* subscript of last element of tbl_array */ |
36 | int tbl_dosplit; /* how full to get before splitting */ |
37 | int tbl_fill; /* how full tbl_array currently is */ |
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38 | int tbl_riter; /* current root of iterator */ |
39 | HENT *tbl_eiter; /* current entry of iterator */ |
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40 | SPAT *tbl_spatroot; /* list of spats for this package */ |
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41 | char *tbl_name; /* name, if a symbol table */ |
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42 | #ifdef SOME_DBM |
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43 | #ifdef HAS_GDBM |
44 | GDBM_FILE tbl_dbm; |
45 | #else |
46 | #ifdef HAS_NDBM |
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47 | DBM *tbl_dbm; |
48 | #else |
49 | int tbl_dbm; |
50 | #endif |
51 | #endif |
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52 | #endif |
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53 | unsigned char tbl_coeffsize; /* is 0 for symbol tables */ |
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54 | }; |
55 | |
56 | STR *hfetch(); |
57 | bool hstore(); |
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58 | STR *hdelete(); |
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59 | HASH *hnew(); |
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60 | void hclear(); |
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61 | void hentfree(); |
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62 | int hiterinit(); |
63 | HENT *hiternext(); |
64 | char *hiterkey(); |
65 | STR *hiterval(); |
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66 | bool hdbmopen(); |
67 | void hdbmclose(); |
68 | bool hdbmstore(); |