comparison: src/server/util/list.c
src/server/util/list.c
- changeset 15
- cff9c4101dd7
- parent 14
- b8bf95b39952
- child 16
- a9bbd82d2dce
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| 14:b8bf95b39952 | 15:cff9c4101dd7 |
|---|---|
| 1 /* | |
| 2 * File: list.c | |
| 3 * Author: olaf | |
| 4 * | |
| 5 * Created on 18. Dezember 2010, 11:23 | |
| 6 */ | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 #include <stdlib.h> | |
| 10 | |
| 11 #include "list.h" | |
| 12 | |
| 13 /* add functions */ | |
| 14 sdlist_t* sdlist_add(sdlist_t *list, void *data) { | |
| 15 sdlist_t *elm = malloc(sizeof(sdlist_t)); | |
| 16 elm->data = data; | |
| 17 elm->next = NULL; | |
| 18 | |
| 19 return sdlist_addl(list, elm); | |
| 20 } | |
| 21 | |
| 22 sdlist_t* sdlist_addl(sdlist_t *list, sdlist_t *l) { | |
| 23 if (list != NULL) { | |
| 24 sdlist_t *end = sdlist_getlast(list); | |
| 25 end->next = l; | |
| 26 return list; | |
| 27 } else { | |
| 28 return l; | |
| 29 } | |
| 30 } | |
| 31 | |
| 32 | |
| 33 | |
| 34 /* remove functions */ | |
| 35 sdlist_t* sdlist_remove(sdlist_t *list, void *data) { | |
| 36 sdlist_t *s = list; | |
| 37 | |
| 38 sdlist_t *prev = NULL; | |
| 39 while (list != NULL) { | |
| 40 if (list->data == data) { | |
| 41 sdlist_t *nl = sdlist_remove_elm(s, prev, list); | |
| 42 free(list); | |
| 43 return nl; | |
| 44 } | |
| 45 | |
| 46 prev = list; | |
| 47 list = list->next; | |
| 48 } | |
| 49 | |
| 50 return s; | |
| 51 } | |
| 52 | |
| 53 sdlist_t* sdlist_removei(sdlist_t *list, int index) { | |
| 54 sdlist_t *s = list; | |
| 55 | |
| 56 sdlist_t *prev = NULL; | |
| 57 int i = 0; | |
| 58 while (list != NULL) { | |
| 59 if (i == index) { | |
| 60 sdlist_t *nl = sdlist_remove_elm(s, prev, list); | |
| 61 free(list); | |
| 62 return nl; | |
| 63 } | |
| 64 | |
| 65 prev = list; | |
| 66 list = list->next; | |
| 67 i++; | |
| 68 } | |
| 69 | |
| 70 return s; | |
| 71 } | |
| 72 | |
| 73 sdlist_t* sdlist_removel(sdlist_t *list, sdlist_t *l) { | |
| 74 sdlist_t *s = list; | |
| 75 | |
| 76 sdlist_t *prev = NULL; | |
| 77 while (list != NULL) { | |
| 78 if (list == l) { | |
| 79 return sdlist_remove_elm(s, prev, list); | |
| 80 } | |
| 81 | |
| 82 prev = list; | |
| 83 list = list->next; | |
| 84 } | |
| 85 | |
| 86 return s; | |
| 87 } | |
| 88 | |
| 89 | |
| 90 sdlist_t *sdlist_remove_elm(sdlist_t *list, sdlist_t *prev, sdlist_t *elm) { | |
| 91 if (elm == NULL) { | |
| 92 return list; | |
| 93 } | |
| 94 | |
| 95 if (prev == NULL) { | |
| 96 return elm->next; | |
| 97 } | |
| 98 | |
| 99 prev->next = elm->next; | |
| 100 | |
| 101 return list; | |
| 102 } | |
| 103 | |
| 104 | |
| 105 | |
| 106 /* insert functions */ | |
| 107 void sdlist_insert(sdlist_t *elm, void *data) { | |
| 108 sdlist_t *newelm = malloc(sizeof(sdlist_t)); | |
| 109 newelm->data = data; | |
| 110 sdlist_insertl(elm, newelm); | |
| 111 } | |
| 112 | |
| 113 void sdlist_insertl(sdlist_t *elm, sdlist_t *l) { | |
| 114 if (elm == NULL || l == NULL) { | |
| 115 return; | |
| 116 } | |
| 117 | |
| 118 l->next = elm->next; | |
| 119 elm->next = l; | |
| 120 } | |
| 121 | |
| 122 | |
| 123 /* get functions */ | |
| 124 sdlist_t* sdlist_get(sdlist_t *list, void *data) { | |
| 125 while (list != NULL) { | |
| 126 if (list->data == data) { | |
| 127 return list; | |
| 128 } | |
| 129 list = list->next; | |
| 130 } | |
| 131 return NULL; | |
| 132 } | |
| 133 | |
| 134 sdlist_t* sdlist_geti(sdlist_t *list, int index) { | |
| 135 for (int i=0;i<index;i++) { | |
| 136 if (list == NULL) { | |
| 137 return NULL; | |
| 138 } | |
| 139 list = list->next; | |
| 140 } | |
| 141 return list; | |
| 142 } | |
| 143 | |
| 144 sdlist_t* sdlist_getlast(sdlist_t *list) { | |
| 145 while(list->next != NULL) { | |
| 146 list = list->next; | |
| 147 } | |
| 148 return list; | |
| 149 } | |
| 150 | |
| 151 | |
| 152 | |
| 153 /* miscellaneous functions */ | |
| 154 size_t sdlist_length(sdlist_t *list) { | |
| 155 int i = 0; | |
| 156 while(list->next != NULL) { | |
| 157 list = list->next; | |
| 158 i++; | |
| 159 } | |
| 160 return i; | |
| 161 } | |
| 162 | |
| 163 void sdlist_free(sdlist_t *elm) { | |
| 164 free(elm); | |
| 165 } | |
| 166 | |
| 167 void sdlist_foreach(sdlist_t *list, sdlist_iterator_func f, void *data) { | |
| 168 while(list != NULL) { | |
| 169 int r = f(list, data); | |
| 170 if (r) { | |
| 171 return; | |
| 172 } | |
| 173 list = list->next; | |
| 174 } | |
| 175 } |
