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annotate arogue5/list.c @ 201:6fb21004a981

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Fix some preprocessor directives. Include process.h in the right place, and use the correct definition of PATH_MAX, when compiling on Windows.
author John "Elwin" Edwards
date Wed, 12 Aug 2015 16:56:19 -0400
parents 0ed67132cf10
children 56e748983fa8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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63
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490)
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1 /*
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2 * Functions for dealing with linked lists of goodies
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include <stdlib.h>
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16 #include "curses.h"
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17 #include "rogue.h"
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18
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19 /*
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20 * detach:
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21 * Takes an item out of whatever linked list it might be in
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22 */
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23
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24 _detach(list, item)
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25 register struct linked_list **list, *item;
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26 {
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27 if (*list == item)
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28 *list = next(item);
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29 if (prev(item) != NULL) item->l_prev->l_next = next(item);
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30 if (next(item) != NULL) item->l_next->l_prev = prev(item);
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31 item->l_next = NULL;
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32 item->l_prev = NULL;
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33 }
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34
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35 /*
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36 * _attach:
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37 * add an item to the head of a list
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38 */
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39
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40 _attach(list, item)
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41 register struct linked_list **list, *item;
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42 {
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43 if (*list != NULL)
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44 {
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45 item->l_next = *list;
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46 (*list)->l_prev = item;
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47 item->l_prev = NULL;
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48 }
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49 else
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50 {
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51 item->l_next = NULL;
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52 item->l_prev = NULL;
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53 }
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54
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55 *list = item;
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56 }
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57
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58 /*
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59 * o_free_list:
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60 * Throw the whole object list away
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61 */
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62
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63 _o_free_list(ptr)
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64 register struct linked_list **ptr;
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65 {
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66 register struct linked_list *item;
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67
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68 while (*ptr != NULL)
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69 {
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70 item = *ptr;
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71 *ptr = next(item);
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72 o_discard(item);
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73 }
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74 }
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75
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76 /*
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77 * o_discard:
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78 * free up an item and its object(and maybe contents)
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79 */
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80
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81 o_discard(item)
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82 register struct linked_list *item;
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83 {
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84 register struct object *obj;
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85 obj = OBJPTR(item);
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86 if (obj->contents != NULL)
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87 o_free_list(obj->contents);
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88 total -= 2;
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89 FREE(item->l_data);
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90 FREE(item);
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91 }
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92
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93 /*
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94 * t_free_list:
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95 * Throw the whole thing list away
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96 */
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97
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98 _t_free_list(ptr)
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99 register struct linked_list **ptr;
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100 {
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101 register struct linked_list *item;
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102
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103 while (*ptr != NULL)
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104 {
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105 item = *ptr;
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106 *ptr = next(item);
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107 t_discard(item);
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108 }
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109 }
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110
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111 /*
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112 * t_discard:
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113 * free up an item and its thing
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114 */
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115
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116 t_discard(item)
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117 struct linked_list *item;
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118 {
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119 total -= 2;
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120 FREE(item->l_data);
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121 FREE(item);
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122 }
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123
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124 /*
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125 * destroy_item:
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126 * get rid of an item structure -- don't worry about contents
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127 */
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128
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129 destroy_item(item)
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130 register struct linked_list *item;
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131 {
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132 total--;
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133 FREE(item);
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134 }
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135
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136 /*
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137 * new_item
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138 * get a new item with a specified size
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139 */
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140
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141 struct linked_list *
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142 new_item(size)
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143 int size;
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144 {
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145 register struct linked_list *item;
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146
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147 if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
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148 msg("Ran out of memory for header after %d items", total);
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149 if ((item->l_data = new(size)) == NULL)
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150 msg("Ran out of memory for data after %d items", total);
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151 item->l_next = item->l_prev = NULL;
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152 return item;
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153 }
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154
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155 /*
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156 * creat_item:
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157 * Create just an item structure -- don't make any contents
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158 */
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159
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160 struct linked_list *
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161 creat_item()
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162 {
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163 register struct linked_list *item;
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164
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165 if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
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166 msg("Ran out of memory for header after %d items", total);
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167 item->l_next = item->l_prev = NULL;
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168 return item;
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169 }
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170
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171 char *
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172 new(size)
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173 int size;
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174 {
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175 register char *space = ALLOC(size);
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176 static char errbuf[LINELEN];
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177
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178 if (space == NULL) {
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179 sprintf(errbuf,"Rogue ran out of memory (used = %d, wanted = %d).",
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490)
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180 md_memused(), size);
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181 fatal(errbuf);
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182 }
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183 total++;
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184 return space;
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185 }