2 This is a Optical-Character-Recognition program
3 Copyright (C) 2000 Joerg Schulenburg
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 see README for EMAIL-address
37 struct element *next, *previous;
40 typedef struct element Element;
43 Element start; /* simplifies for(each_element) { ... */
44 Element stop; /* ... list_del() ... } v0.41 */
45 Element **current; /* for(each_element) */
46 int n; /* number of elements */
47 int level; /* level of nested fors */
49 typedef struct list List;
55 void list_init ( List *l );
56 int list_app ( List *l, void *data );
57 int list_ins ( List *l, void *data_after, void *data);
58 Element*list_element_from_data ( List *l, void *data );
59 int list_del ( List *l, void *data );
60 void list_free ( List *l );
61 int list_and_data_free ( List *l, void (*free_data)(void *data));
62 int list_higher_level ( List *l );
63 void list_lower_level ( List *l );
64 void * list_next ( List *l, void *data );
65 void * list_prev ( List *l, void *data );
66 void list_sort ( List *l, int (*compare)(const void *, const void *) );
68 #define list_empty(l) ((l)->start.next == &(l)->stop ? 1 : 0)
69 #define list_get_header(l) ((l)->start.next->data)
70 #define list_get_tail(l) ((l)->stop.previous->data)
71 #define list_get_current(l) ((l)->current[(l)->level]->data)
72 #define list_get_cur_prev(l) ((l)->current[(l)->level]->previous == NULL ? \
73 NULL : (l)->current[(l)->level]->previous->data )
74 #define list_get_cur_next(l) ((l)->current[(l)->level]->next == NULL ? \
75 NULL : (l)->current[(l)->level]->next->data )
76 #define list_total(l) ((l)->n)
78 #define for_each_data(l) \
79 if (list_higher_level(l) == 0) { \
80 for ( ; (l)->current[(l)->level] \
81 && (l)->current[(l)->level]!=&(l)->stop; (l)->current[(l)->level] = \
82 (l)->current[(l)->level]->next ) {
85 #define end_for_each(l) \
87 list_lower_level(l); \