Mercurial > almixer_isolated
annotate LinkedList.c @ 73:32757e494675
Fixed bug that sets the wrong variable for fading in Pause.
There still seems to be another bug related to fading though based on Johnson Lin's test case. Audio no longer stops and triggers the completion callback, but the volume doesn't seem to go up to max for long fade-ins. Still investigating.
author | Eric Wing <ewing . public |-at-| gmail . com> |
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date | Fri, 10 Aug 2012 22:53:14 -0700 |
parents | 14c22fc3c753 |
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rev | line source |
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1 #include "LinkedList.h" |
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2 #include <stddef.h> /* for NULL */ |
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3 #include <stdlib.h> /* for malloc/free */ |
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4 #include <stdio.h> /* for debugging */ |
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5 |
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6 struct LinkedListNode |
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7 { |
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8 LinkedListNode* nextNode; |
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9 LinkedListNode* previousNode; |
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10 void* dataPtr; |
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11 }; |
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12 |
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13 struct LinkedList |
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14 { |
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15 size_t currentSize; |
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16 LinkedListNode* headPtr; |
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17 LinkedListNode* tailPtr; |
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18 }; |
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19 |
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20 |
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21 LinkedListNode* LinkedListNode_Create() |
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22 { |
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23 LinkedListNode* list_node; |
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24 list_node = (LinkedListNode*)calloc(1, sizeof(LinkedListNode)); |
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25 if(NULL == list_node) |
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26 { |
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27 /* Very bad, but not sure what to do here. */ |
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28 return NULL; |
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29 } |
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30 |
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31 return list_node; |
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32 } |
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33 |
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34 |
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35 void LinkedListNode_Free(LinkedListNode* list_node) |
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36 { |
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37 if(NULL == list_node) |
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38 { |
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39 return; |
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40 } |
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41 free(list_node); |
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42 } |
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43 |
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44 |
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45 LinkedList* LinkedList_Create() |
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46 { |
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47 LinkedList* linked_list; |
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48 linked_list = (LinkedList*)calloc(1, sizeof(LinkedList)); |
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49 if(NULL == linked_list) |
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50 { |
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51 /* Very bad, but not sure what to do here. */ |
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52 return NULL; |
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53 } |
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54 |
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55 return linked_list; |
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56 } |
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57 |
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58 void LinkedList_Free(LinkedList* linked_list) |
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59 { |
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60 /* Both functions check for NULL */ |
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61 LinkedList_Clear(linked_list); |
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62 free(linked_list); |
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63 } |
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64 |
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65 |
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66 /** |
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67 * Returns 1 if successful, 0 if failure. |
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68 */ |
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69 unsigned int LinkedList_PushFront(LinkedList* linked_list, void* new_item) |
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70 { |
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71 LinkedListNode* new_node; |
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72 |
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73 if(NULL == linked_list) |
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74 { |
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75 return 0; |
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76 } |
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77 |
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78 new_node = LinkedListNode_Create(); |
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79 if(NULL == new_node) |
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80 { |
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81 return 0; |
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82 } |
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83 |
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84 new_node->dataPtr = new_item; |
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85 |
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86 if(0 == linked_list->currentSize) |
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87 { |
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88 linked_list->tailPtr = new_node; |
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89 } |
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90 else |
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91 { |
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92 LinkedListNode* head_node = linked_list->headPtr; |
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93 new_node->nextNode = head_node; |
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94 head_node->previousNode = new_node; |
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95 } |
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96 |
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97 linked_list->headPtr = new_node; |
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98 linked_list->currentSize++; |
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99 return 1; |
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100 } |
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101 |
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102 unsigned int LinkedList_PushBack(LinkedList* linked_list, void* new_item) |
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103 { |
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104 LinkedListNode* new_node; |
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105 |
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106 if(NULL == linked_list) |
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107 { |
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108 return 0; |
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109 } |
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110 |
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111 new_node = LinkedListNode_Create(); |
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112 if(NULL == new_node) |
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113 { |
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114 return 0; |
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115 } |
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116 |
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117 new_node->dataPtr = new_item; |
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118 |
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119 if(0 == linked_list->currentSize) |
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120 { |
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121 linked_list->headPtr = new_node; |
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122 } |
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123 else |
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124 { |
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125 LinkedListNode* tail_node = linked_list->tailPtr; |
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126 new_node->previousNode = tail_node; |
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127 tail_node->nextNode = new_node; |
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128 } |
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129 |
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130 linked_list->tailPtr = new_node; |
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131 linked_list->currentSize++; |
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132 return 1; |
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133 |
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134 } |
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135 |
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136 void* LinkedList_PopFront(LinkedList* linked_list) |
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parents:
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|
137 { |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
138 LinkedListNode* head_node; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
139 void* return_data; |
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|
140 |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
141 if(NULL == linked_list) |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
142 { |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
143 return 0; |
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parents:
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|
144 } |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
145 if(0 == linked_list->currentSize) |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
146 { |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
147 return NULL; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
148 } |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
149 |
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150 head_node = linked_list->headPtr; |
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151 return_data = head_node->dataPtr; |
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152 |
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153 if(1 == linked_list->currentSize) |
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|
154 { |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
155 LinkedList_Clear(linked_list); |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
156 } |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
157 else |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
158 { |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
159 LinkedListNode* next_node = head_node->nextNode; |
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|
160 next_node->previousNode = NULL; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
161 LinkedListNode_Free(head_node); |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
162 linked_list->headPtr = next_node; |
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|
163 linked_list->currentSize = linked_list->currentSize - 1; |
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|
164 |
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|
165 } |
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|
166 return return_data; |
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|
167 } |
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|
168 |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
169 void* LinkedList_PopBack(LinkedList* linked_list) |
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|
170 { |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
171 LinkedListNode* tail_node; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
172 void* return_data; |
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|
173 |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
174 if(NULL == linked_list) |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
175 { |
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|
176 return NULL; |
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|
177 } |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
178 if(0 == linked_list->currentSize) |
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|
179 { |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
180 return NULL; |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
181 } |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
182 |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
183 tail_node = linked_list->tailPtr; |
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Eric Wing <ewing . public |-at-| gmail . com>
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|
184 return_data = tail_node->dataPtr; |
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|
185 |
17
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
186 if(1 == linked_list->currentSize) |
13
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Eric Wing <ewing . public |-at-| gmail . com>
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|
187 { |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
188 LinkedList_Clear(linked_list); |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
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|
189 } |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
190 else |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
191 { |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
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|
192 LinkedListNode* previous_node = tail_node->previousNode; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
193 previous_node->nextNode = NULL; |
54aa96ae8912
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
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|
194 LinkedListNode_Free(tail_node); |
54aa96ae8912
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
195 linked_list->tailPtr = previous_node; |
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|
196 linked_list->currentSize = linked_list->currentSize - 1; |
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parents:
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|
197 } |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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|
198 return return_data; |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
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|
199 } |
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
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|
200 |
17
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
201 |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
202 void* LinkedList_Front(LinkedList* linked_list) |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
203 { |
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Needed new Front and Back (non-popping) functions for LinkedList.
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parents:
15
diff
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|
204 LinkedListNode* head_node; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
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15
diff
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|
205 void* return_data; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
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15
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|
206 |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
207 if(NULL == linked_list) |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
208 { |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
209 return 0; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
210 } |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
211 if(0 == linked_list->currentSize) |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
212 { |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
213 return NULL; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
214 } |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
215 |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
216 head_node = linked_list->headPtr; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
217 return_data = head_node->dataPtr; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
218 |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
219 return return_data; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
220 } |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
221 |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
222 void* LinkedList_Back(LinkedList* linked_list) |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
223 { |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
224 LinkedListNode* tail_node; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
225 void* return_data; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
226 |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
227 if(NULL == linked_list) |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
228 { |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
229 return NULL; |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
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|
230 } |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
231 if(0 == linked_list->currentSize) |
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Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
232 { |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
233 return NULL; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
234 } |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
235 |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
236 tail_node = linked_list->tailPtr; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
237 return_data = tail_node->dataPtr; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
238 |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
239 return return_data; |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
240 } |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
241 |
d58eb38c771b
Needed new Front and Back (non-popping) functions for LinkedList.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
15
diff
changeset
|
242 |
13
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
243 size_t LinkedList_Size(LinkedList* linked_list) |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
244 { |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
245 if(NULL == linked_list) |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
246 { |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
247 return 0; |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
248 } |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
249 return linked_list->currentSize; |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
250 } |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
251 |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
252 void LinkedList_Clear(LinkedList* linked_list) |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
253 { |
21
14c22fc3c753
Fix to LinkedList_Clear
Eric Wing <ewing . public |-at-| gmail . com>
parents:
17
diff
changeset
|
254 LinkedListNode* current_node; |
14c22fc3c753
Fix to LinkedList_Clear
Eric Wing <ewing . public |-at-| gmail . com>
parents:
17
diff
changeset
|
255 LinkedListNode* next_node; |
13
54aa96ae8912
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
256 if(NULL == linked_list) |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
257 { |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
258 return; |
54aa96ae8912
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
259 } |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
260 |
21
14c22fc3c753
Fix to LinkedList_Clear
Eric Wing <ewing . public |-at-| gmail . com>
parents:
17
diff
changeset
|
261 current_node = linked_list->headPtr; |
13
54aa96ae8912
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
262 while(NULL != current_node) |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
263 { |
54aa96ae8912
Added LinkedList class to project.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff
changeset
|
264 next_node = current_node->nextNode; |
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265 LinkedListNode_Free(current_node); |
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266 current_node = next_node; |
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267 } |
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268 linked_list->headPtr = NULL; |
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269 linked_list->tailPtr = NULL; |
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270 linked_list->currentSize = 0; |
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271 } |
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272 |
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273 void* LinkedListNode_GetData(LinkedListNode* list_node) |
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274 { |
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275 if(NULL == list_node) |
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276 { |
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277 return NULL; |
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278 } |
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279 return list_node->dataPtr; |
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280 } |
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281 |
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282 LinkedListNode* LinkedList_Find(LinkedList* linked_list, void* the_data, LinkedListNode* start_node) |
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283 { |
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284 LinkedListNode* current_node; |
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285 if(NULL == linked_list) |
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286 { |
15
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287 return NULL; |
13
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288 } |
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289 if(NULL == start_node) |
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290 { |
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291 start_node = linked_list->headPtr; |
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292 } |
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293 |
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294 for(current_node = start_node; NULL != current_node; current_node = current_node->nextNode) |
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295 { |
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296 if(current_node->dataPtr == the_data) |
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297 { |
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298 return current_node; |
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299 } |
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300 } |
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301 return current_node; |
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302 } |
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303 |
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304 /* Make sure your LinkedListNode is actually connected to the |
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305 * LinkedList instance you pass. |
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306 */ |
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307 unsigned int LinkedList_Remove(LinkedList* linked_list, LinkedListNode* list_node) |
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308 { |
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309 LinkedListNode* previous_node; |
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310 LinkedListNode* next_node; |
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311 if(NULL == linked_list) |
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312 { |
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313 return 0; |
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314 } |
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315 if(NULL == list_node) |
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316 { |
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317 return 0; |
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318 } |
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319 |
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320 if(1 == linked_list->currentSize) |
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321 { |
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322 LinkedList_Clear(linked_list); |
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323 } |
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324 else if(list_node == linked_list->headPtr) |
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325 { |
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326 LinkedList_PopFront(linked_list); |
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327 } |
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328 else if(list_node == linked_list->tailPtr) |
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329 { |
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330 LinkedList_PopBack(linked_list); |
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331 } |
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332 else |
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333 { |
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334 previous_node = list_node->previousNode; |
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335 next_node = list_node->nextNode; |
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336 |
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337 previous_node->nextNode = next_node; |
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338 next_node->previousNode = previous_node; |
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339 LinkedListNode_Free(list_node); |
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340 |
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341 linked_list->currentSize = linked_list->currentSize - 1; |
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342 } |
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343 |
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344 return 1; |
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345 |
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346 } |
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347 |
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348 |
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349 |