2 * Copyright (c) 2004 Teodor Sigaev <teodor@sigaev.ru>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 typedef int (*compare_sort)(const void*, const void*);
33 typedef void (*ffree)(void*);
35 typedef struct SORTITEM {
37 struct SORTITEM *prev;
38 struct SORTITEM *next;
42 SORTITEM* buf; /* buffer */
43 int buflen; /* length of buffer in items */
44 int curlen; /* current number of items */
45 compare_sort cmpr; /* compare two items */
46 ffree free; /* free mem unused item, may be NULL */
48 /* pointer for sorting */
52 SORTITEM* curitem; /* current position for iterator */
58 int PS_init( SORT* sobj, int buflen, compare_sort func, ffree ffunc );
60 * reset sort object to initial state
62 void PS_reset( SORT* sobj );
64 * clear sort object (after it it's need to call PS_init)
66 void PS_clear( SORT* sobj );
69 * functions for go trought sorted array
71 int PS_init_iterator( SORT* sobj, int start );
72 void* PS_getnext( SORT* sobj );
75 * insert, return 1 if inserted
77 int PS_insert( SORT* sobj, void* nobj );
82 void PS_bulkinsert( SORT* sobj, void** nobjs, int len );
84 * insert a-la qsort, require sobj->free = NULL
86 int PS_bulkplain( SORT* sobj, void* nobjs, int size, int len );
89 * return number of result in buffer
91 int PS_number( SORT* sobj );