Mercurial > hg > early-roguelike

annotate urogue/list.c @ 317:aab761616489 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rearrange some Autoconf files. Autoconf was failing to detect install-sh at the top level and needed some explicit directions. It also wants config.guess and config.sub to be provided too. A few other macros have also been updated.
author John "Elwin" Edwards
date Tue, 05 Sep 2023 20:05:24 -0400
parents c495a4f288c6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
256
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
1 /*
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
2 list.c - Functions for dealing with linked lists of goodies
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
3
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
5 Copyright (C) 1985, 1986, 1992, 1993, 1995 Herb Chong
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
6 All rights reserved.
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
7
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
8 Based on "Advanced Rogue"
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
10 All rights reserved.
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
11
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
12 Based on "Rogue: Exploring the Dungeons of Doom"
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
14 All rights reserved.
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
15
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
16 See the file LICENSE.TXT for full copyright and licensing information.
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
17 */
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
18
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
19 #include <stdlib.h>
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
20 #include <stdio.h>
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
21 #include <string.h>
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
22 #include "rogue.h"
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
23
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
24 static char errbuf[2 * LINELEN];
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
25
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
26 /*
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
27 ur_alloc()
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
28 ur_free()
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
29
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
30 These are just calls to the system alloc and free, and they also adjust
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
31 the totals. The buffer is cleared out because idents need to be zero
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
32 before going into the pack, or they will be used as indices!
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
33 */
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
34
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
35 void *
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
36 ur_alloc(size_t size)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
37 {
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
38 char *buf_p;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
39
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
40 total++;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
41
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
42 buf_p = mem_malloc(size);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
43
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
44 if (buf_p == NULL)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
45 return(NULL);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
46
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
47 memset(buf_p,0,size);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
48
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
49 return(buf_p);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
50 }
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
51
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
52 void
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
53 ur_free(void *buf_p)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
54 {
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
55 mem_free(buf_p);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
56 total--;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
57 }
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
58
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
59 /*
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
60 detach()
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
61 Takes an item out of whatever linked list it might be in
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
62 .... function needs to be renamed....
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
63 */
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
64
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
65 void
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
66 _detach(struct linked_list **list, struct linked_list *item)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
67 {
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
68 if (*list == item)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
69 *list = next(item);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
70
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
71 if (prev(item) != NULL)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
72 item->l_prev->l_next = next(item);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
73
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
74 if (next(item) != NULL)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
75 item->l_next->l_prev = prev(item);
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
76
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
77 item->l_next = NULL;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
78 item->l_prev = NULL;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
79 }
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
80
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
81 /*
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
82 _attach()
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
83 add an item to the head of a list
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
84 ... this needs to be renamed as well ...
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
85 */
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
86
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
87 void
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
88 _attach(struct linked_list **list, struct linked_list *item)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
89 {
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
90 if (*list != NULL)
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
91 {
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
92 item->l_next = *list;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
93 (*list)->l_prev = item;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
94 item->l_prev = NULL;
c495a4f288c6 Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset