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annotate xrogue/list.c @ 179:ca876944b196

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Advanced Rogue 7: rename magic users to magicians. Class names with spaces in them confuse anything that parses the logfile. The documentation does refer mostly to magicians.
author John "Elwin" Edwards
date Sat, 22 Aug 2015 10:55:53 -0400
parents ce0cf824c192
children f54901b9c39b
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1 /*
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2 list.c - Functions for dealing with linked lists of goodies
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <stdlib.h>
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20 #include <string.h>
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21 #include <curses.h>
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22 #include "rogue.h"
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23
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24 /*
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25 * detach:
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26 * Takes an item out of whatever linked list it might be in
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27 */
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28
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29 _detach(list, item)
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30 register struct linked_list **list, *item;
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31 {
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32 if (*list == item)
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33 *list = next(item);
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34 if (prev(item) != NULL) item->l_prev->l_next = next(item);
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35 if (next(item) != NULL) item->l_next->l_prev = prev(item);
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36 item->l_next = NULL;
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37 item->l_prev = NULL;
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38 }
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39
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40 /*
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41 * _attach:
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42 * add an item to the head of a list
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43 */
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44
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45 _attach(list, item)
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46 register struct linked_list **list, *item;
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47 {
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48 if (*list != NULL)
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49 {
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50 item->l_next = *list;
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51 (*list)->l_prev = item;
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52 item->l_prev = NULL;
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53 }
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54 else
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55 {
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56 item->l_next = NULL;
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57 item->l_prev = NULL;
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58 }
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59
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60 *list = item;
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61 }
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62
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63 /*
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64 * o_free_list:
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65 * Throw the whole object list away
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66 */
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67
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68 _o_free_list(ptr)
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69 register struct linked_list **ptr;
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70 {
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71 register struct linked_list *item;
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72
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73 while (*ptr != NULL)
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74 {
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75 item = *ptr;
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76 *ptr = next(item);
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77 o_discard(item);
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78 }
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79 }
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80
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81 /*
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82 * o_discard:
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83 * free up an item and its object(and maybe contents)
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84 */
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85
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86 o_discard(item)
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87 register struct linked_list *item;
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88 {
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89 register struct object *obj;
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90
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91 obj = OBJPTR(item);
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92 if (obj->contents != NULL)
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93 o_free_list(obj->contents);
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94 total -= 2;
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