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Diffstat (limited to '')
-rw-r--r-- | libraries/eina/src/lib/eina_iterator.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/libraries/eina/src/lib/eina_iterator.c b/libraries/eina/src/lib/eina_iterator.c new file mode 100644 index 0000000..0721066 --- /dev/null +++ b/libraries/eina/src/lib/eina_iterator.c | |||
@@ -0,0 +1,172 @@ | |||
1 | /* EINA - EFL data type library | ||
2 | * Copyright (C) 2002-2008 Cedric Bail | ||
3 | * | ||
4 | * This library is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) any later version. | ||
8 | * | ||
9 | * This library is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | * Lesser General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU Lesser General Public | ||
15 | * License along with this library; | ||
16 | * if not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | #ifdef HAVE_CONFIG_H | ||
20 | # include "config.h" | ||
21 | #endif | ||
22 | |||
23 | #include <stdlib.h> | ||
24 | |||
25 | #include "eina_config.h" | ||
26 | #include "eina_private.h" | ||
27 | |||
28 | /* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */ | ||
29 | #include "eina_safety_checks.h" | ||
30 | #include "eina_iterator.h" | ||
31 | |||
32 | /*============================================================================* | ||
33 | * Local * | ||
34 | *============================================================================*/ | ||
35 | |||
36 | /** | ||
37 | * @cond LOCAL | ||
38 | */ | ||
39 | |||
40 | static const char EINA_MAGIC_ITERATOR_STR[] = "Eina Iterator"; | ||
41 | |||
42 | #define EINA_MAGIC_CHECK_ITERATOR(d) \ | ||
43 | do { \ | ||
44 | if (!EINA_MAGIC_CHECK(d, EINA_MAGIC_ITERATOR)) { \ | ||
45 | EINA_MAGIC_FAIL(d, EINA_MAGIC_ITERATOR); } \ | ||
46 | } while(0) | ||
47 | |||
48 | /** | ||
49 | * @endcond | ||
50 | */ | ||
51 | |||
52 | |||
53 | /*============================================================================* | ||
54 | * Global * | ||
55 | *============================================================================*/ | ||
56 | |||
57 | /** | ||
58 | * @internal | ||
59 | * @brief Initialize the iterator module. | ||
60 | * | ||
61 | * @return #EINA_TRUE on success, #EINA_FALSE on failure. | ||
62 | * | ||
63 | * This function sets up the iterator module of Eina. It is called by | ||
64 | * eina_init(). | ||
65 | * | ||
66 | * @see eina_init() | ||
67 | */ | ||
68 | Eina_Bool | ||
69 | eina_iterator_init(void) | ||
70 | { | ||
71 | return eina_magic_string_set(EINA_MAGIC_ITERATOR, EINA_MAGIC_ITERATOR_STR); | ||
72 | } | ||
73 | |||
74 | /** | ||
75 | * @internal | ||
76 | * @brief Shut down the iterator module. | ||
77 | * | ||
78 | * @return #EINA_TRUE on success, #EINA_FALSE on failure. | ||
79 | * | ||
80 | * This function shuts down the iterator module set up by | ||
81 | * eina_iterator_init(). It is called by eina_shutdown(). | ||
82 | * | ||
83 | * @see eina_shutdown() | ||
84 | */ | ||
85 | Eina_Bool | ||
86 | eina_iterator_shutdown(void) | ||
87 | { | ||
88 | return EINA_TRUE; | ||
89 | } | ||
90 | |||
91 | /*============================================================================* | ||
92 | * API * | ||
93 | *============================================================================*/ | ||
94 | |||
95 | EAPI void | ||
96 | eina_iterator_free(Eina_Iterator *iterator) | ||
97 | { | ||
98 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
99 | EINA_SAFETY_ON_NULL_RETURN(iterator); | ||
100 | EINA_SAFETY_ON_NULL_RETURN(iterator->free); | ||
101 | iterator->free(iterator); | ||
102 | } | ||
103 | |||
104 | EAPI void * | ||
105 | eina_iterator_container_get(Eina_Iterator *iterator) | ||
106 | { | ||
107 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
108 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, NULL); | ||
109 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator->get_container, NULL); | ||
110 | return iterator->get_container(iterator); | ||
111 | } | ||
112 | |||
113 | EAPI Eina_Bool | ||
114 | eina_iterator_next(Eina_Iterator *iterator, void **data) | ||
115 | { | ||
116 | if (!iterator) | ||
117 | return EINA_FALSE; | ||
118 | |||
119 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
120 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE); | ||
121 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator->next, EINA_FALSE); | ||
122 | EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE); | ||
123 | return iterator->next(iterator, data); | ||
124 | } | ||
125 | |||
126 | EAPI void | ||
127 | eina_iterator_foreach(Eina_Iterator *iterator, | ||
128 | Eina_Each_Cb cb, | ||
129 | const void *fdata) | ||
130 | { | ||
131 | const void *container; | ||
132 | void *data; | ||
133 | |||
134 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
135 | EINA_SAFETY_ON_NULL_RETURN(iterator); | ||
136 | EINA_SAFETY_ON_NULL_RETURN(iterator->get_container); | ||
137 | EINA_SAFETY_ON_NULL_RETURN(iterator->next); | ||
138 | EINA_SAFETY_ON_NULL_RETURN(cb); | ||
139 | |||
140 | if (!eina_iterator_lock(iterator)) return ; | ||
141 | |||
142 | container = iterator->get_container(iterator); | ||
143 | while (iterator->next(iterator, &data) == EINA_TRUE) { | ||
144 | if (cb(container, data, (void *)fdata) != EINA_TRUE) | ||
145 | goto on_exit; | ||
146 | } | ||
147 | |||
148 | on_exit: | ||
149 | (void) eina_iterator_unlock(iterator); | ||
150 | } | ||
151 | |||
152 | EAPI Eina_Bool | ||
153 | eina_iterator_lock(Eina_Iterator *iterator) | ||
154 | { | ||
155 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
156 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE); | ||
157 | |||
158 | if (iterator->lock) | ||
159 | return iterator->lock(iterator); | ||
160 | return EINA_TRUE; | ||
161 | } | ||
162 | |||
163 | EAPI Eina_Bool | ||
164 | eina_iterator_unlock(Eina_Iterator *iterator) | ||
165 | { | ||
166 | EINA_MAGIC_CHECK_ITERATOR(iterator); | ||
167 | EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE); | ||
168 | |||
169 | if (iterator->unlock) | ||
170 | return iterator->unlock(iterator); | ||
171 | return EINA_TRUE; | ||
172 | } | ||