src/server/ucx/list.c

Sun, 26 Feb 2012 19:51:14 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 26 Feb 2012 19:51:14 +0100
changeset 26
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parent 23
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child 36
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permissions
-rw-r--r--

Minimal webdav support

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1 #include "list.h"
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2
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3 UcxList *ucx_list_clone(UcxList *l, copy_func fnc, void *data) {
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4 UcxList *ret = NULL;
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5 while (l != NULL) {
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6 if (fnc != NULL) {
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7 ret = ucx_list_append(ret, fnc(l->data, data));
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8 } else {
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9 ret = ucx_list_append(ret, l->data);
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10 }
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11 l = l->next;
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12 }
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13 return ret;
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14 }
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16 int ucx_list_equals(UcxList *l1, UcxList *l2, cmp_func fnc, void* data) {
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17 if (l1 == l2) return 1;
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18
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19 while (l1 != NULL && l2 != NULL) {
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20 if (fnc == NULL) {
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21 if (l1->data != l2->data) return 0;
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22 } else {
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23 if (fnc(l1->data, l2->data, data) != 0) return 0;
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24 }
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25 l1 = l1->next;
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26 l2 = l2->next;
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27 }
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28
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29 return (l1 == NULL && l2 == NULL);
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30 }
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31
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32 void ucx_list_free(UcxList *l) {
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33 UcxList *e = l, *f;
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34 while (e != NULL) {
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35 f = e;
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36 e = e->next;
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37 free(f);
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38 }
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39 }
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40
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41 UcxList *ucx_list_append(UcxList *l, void *data) {
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42 UcxList *nl = (UcxList*) malloc(sizeof(UcxList));
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43 if (nl == NULL) return NULL;
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44
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45 nl->data = data;
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46 nl->next = NULL;
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47 if (l == NULL) {
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48 return nl;
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49 } else {
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50 UcxList *t = ucx_list_last(l);
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51 t->next = nl;
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52 return l;
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53 }
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54 }
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55
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56 UcxList *ucx_list_prepend(UcxList *l, void *data) {
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57 UcxList *nl = ucx_list_append(NULL, data);
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58 if (nl == NULL) return NULL;
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59
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60 if (l != NULL) {
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61 nl->next = l;
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62 }
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63 return nl;
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64 }
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65
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66 UcxList *ucx_list_concat(UcxList *l1, UcxList *l2) {
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67 if (l1 == NULL) {
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68 return l2;
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69 } else {
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70 UcxList *last = ucx_list_last(l1);
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71 last->next = l2;
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72 return l1;
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73 }
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74 }
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75
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76 UcxList *ucx_list_last(UcxList *l) {
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77 if (l == NULL) return NULL;
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78
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79 UcxList *e = l;
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80 while (e->next != NULL) {
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81 e = e->next;
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82 }
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83 return e;
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84 }
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85
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86 UcxList *ucx_list_get(UcxList *l, int index) {
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87 if (l == NULL) return NULL;
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88
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89 UcxList *e = l;
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90 while (e->next != NULL && index > 0) {
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91 e = e->next;
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92 index--;
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93 }
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94
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95 return index == 0 ? e : NULL;
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96 }
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97
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98 size_t ucx_list_size(UcxList *l) {
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99 if (l == NULL) return 0;
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100
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101 UcxList *e = l;
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102 size_t s = 1;
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103 while (e->next != NULL) {
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104 e = e->next;
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105 s++;
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106 }
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107
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108 return s;
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109 }
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110
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111 void ucx_list_foreach(UcxList *l, ucx_callback fnc, void* data) {
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112 UcxList *e = l;
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113 UcxList *n;
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114 while (e != NULL) {
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115 n = e->next;
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116 fnc(e, data);
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117 e = n;
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118 }
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119 }
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120
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121 /* list specific functions */
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122 UcxList *ucx_list_remove(UcxList *l, UcxList *e) {
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123 if (e == l) {
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124 l = e->next;
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125 free(e);
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126 } else {
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127 UcxList *f = l;
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128 while (f->next != NULL && f->next != e) {
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129 f = f->next;
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130 }
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131 /* perform remove iff this element is found in this list */
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132 if (f->next == e) {
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133 f->next = e->next;
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134 free(e);
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135 }
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136 }
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137 return l;
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138 }

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