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e646a8f3 MT |
1 | /* |
2 | libloc - A library to determine the location of someone on the Internet | |
3 | ||
4 | Copyright (C) 2020 IPFire Development Team <info@ipfire.org> | |
5 | ||
6 | This library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | This library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | */ | |
16 | ||
17 | #include <errno.h> | |
18 | #include <stdlib.h> | |
19 | ||
20 | #include <loc/country.h> | |
21 | #include <loc/country-list.h> | |
22 | #include <loc/private.h> | |
23 | ||
24 | struct loc_country_list { | |
25 | struct loc_ctx* ctx; | |
26 | int refcount; | |
27 | ||
d5205091 MT |
28 | struct loc_country** elements; |
29 | size_t elements_size; | |
30 | ||
e646a8f3 | 31 | size_t size; |
e646a8f3 MT |
32 | }; |
33 | ||
d5205091 MT |
34 | static int loc_country_list_grow(struct loc_country_list* list, size_t size) { |
35 | DEBUG(list->ctx, "Growing country list %p by %zu to %zu\n", | |
36 | list, size, list->elements_size + size); | |
37 | ||
38 | struct loc_country** elements = reallocarray(list->elements, | |
39 | list->elements_size + size, sizeof(*list->elements)); | |
40 | if (!elements) | |
41 | return -errno; | |
42 | ||
43 | list->elements = elements; | |
44 | list->elements_size += size; | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
e646a8f3 MT |
49 | LOC_EXPORT int loc_country_list_new(struct loc_ctx* ctx, |
50 | struct loc_country_list** list) { | |
51 | struct loc_country_list* l = calloc(1, sizeof(*l)); | |
52 | if (!l) | |
53 | return -ENOMEM; | |
54 | ||
55 | l->ctx = loc_ref(ctx); | |
56 | l->refcount = 1; | |
57 | ||
e646a8f3 MT |
58 | DEBUG(l->ctx, "Country list allocated at %p\n", l); |
59 | *list = l; | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | LOC_EXPORT struct loc_country_list* loc_country_list_ref(struct loc_country_list* list) { | |
65 | list->refcount++; | |
66 | ||
67 | return list; | |
68 | } | |
69 | ||
70 | static void loc_country_list_free(struct loc_country_list* list) { | |
71 | DEBUG(list->ctx, "Releasing country list at %p\n", list); | |
72 | ||
73 | loc_country_list_clear(list); | |
74 | ||
75 | loc_unref(list->ctx); | |
76 | free(list); | |
77 | } | |
78 | ||
79 | LOC_EXPORT struct loc_country_list* loc_country_list_unref(struct loc_country_list* list) { | |
80 | if (!list) | |
81 | return NULL; | |
82 | ||
83 | if (--list->refcount > 0) | |
84 | return list; | |
85 | ||
86 | loc_country_list_free(list); | |
87 | return NULL; | |
88 | } | |
89 | ||
90 | LOC_EXPORT size_t loc_country_list_size(struct loc_country_list* list) { | |
91 | return list->size; | |
92 | } | |
93 | ||
94 | LOC_EXPORT int loc_country_list_empty(struct loc_country_list* list) { | |
95 | return list->size == 0; | |
96 | } | |
97 | ||
98 | LOC_EXPORT void loc_country_list_clear(struct loc_country_list* list) { | |
248f5e04 MT |
99 | if (!list->elements) |
100 | return; | |
101 | ||
e646a8f3 | 102 | for (unsigned int i = 0; i < list->size; i++) |
d5205091 | 103 | loc_country_unref(list->elements[i]); |
248f5e04 MT |
104 | |
105 | free(list->elements); | |
a6dc9324 | 106 | list->elements = NULL; |
248f5e04 MT |
107 | list->elements_size = 0; |
108 | ||
109 | list->size = 0; | |
e646a8f3 MT |
110 | } |
111 | ||
112 | LOC_EXPORT struct loc_country* loc_country_list_get(struct loc_country_list* list, size_t index) { | |
113 | // Check index | |
114 | if (index >= list->size) | |
115 | return NULL; | |
116 | ||
d5205091 | 117 | return loc_country_ref(list->elements[index]); |
e646a8f3 MT |
118 | } |
119 | ||
120 | LOC_EXPORT int loc_country_list_append( | |
121 | struct loc_country_list* list, struct loc_country* country) { | |
122 | if (loc_country_list_contains(list, country)) | |
123 | return 0; | |
124 | ||
125 | // Check if we have space left | |
d5205091 MT |
126 | if (list->size >= list->elements_size) { |
127 | int r = loc_country_list_grow(list, 64); | |
128 | if (r) | |
129 | return r; | |
e646a8f3 MT |
130 | } |
131 | ||
132 | DEBUG(list->ctx, "%p: Appending country %p to list\n", list, country); | |
133 | ||
d5205091 | 134 | list->elements[list->size++] = loc_country_ref(country); |
e646a8f3 MT |
135 | |
136 | return 0; | |
137 | } | |
138 | ||
139 | LOC_EXPORT int loc_country_list_contains( | |
140 | struct loc_country_list* list, struct loc_country* country) { | |
141 | for (unsigned int i = 0; i < list->size; i++) { | |
d5205091 | 142 | if (loc_country_cmp(country, list->elements[i]) == 0) |
e646a8f3 MT |
143 | return 1; |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | LOC_EXPORT int loc_country_list_contains_code( | |
150 | struct loc_country_list* list, const char* code) { | |
151 | struct loc_country* country; | |
152 | ||
153 | int r = loc_country_new(list->ctx, &country, code); | |
154 | if (r) | |
155 | return -1; | |
156 | ||
157 | r = loc_country_list_contains(list, country); | |
158 | loc_country_unref(country); | |
159 | ||
160 | return r; | |
161 | } |