1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2010 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Common Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.opensource.org/licenses/cpl1.0.txt *
11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24 * Glenn Fowler
25 * AT&T Research
26 *
27 * hash table library
28 */
29
30 #include "hashlib.h"
31
32 /*
33 * apply walker to each active bucket in the table
34 */
35
36 int
hashwalk(Hash_table_t * tab,int flags,register int (* walker)(const char *,char *,void *),void * handle)37 hashwalk(Hash_table_t* tab, int flags, register int (*walker)(const char*, char*, void*), void* handle)
38 {
39 register Hash_bucket_t* b;
40 register int v;
41 Hash_position_t* pos;
42
43 if (!(pos = hashscan(tab, flags)))
44 return(-1);
45 v = 0;
46 while (b = hashnext(pos))
47 if ((v = (*walker)(hashname(b), (tab->flags & HASH_VALUE) ? b->value : (char*)b, handle)) < 0)
48 break;
49 hashdone(pos);
50 return(v);
51 }
52