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Diffstat (limited to 'libraries/eina/src/examples/eina_hash_04.c')
-rw-r--r-- | libraries/eina/src/examples/eina_hash_04.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/libraries/eina/src/examples/eina_hash_04.c b/libraries/eina/src/examples/eina_hash_04.c deleted file mode 100644 index da73e04..0000000 --- a/libraries/eina/src/examples/eina_hash_04.c +++ /dev/null | |||
@@ -1,198 +0,0 @@ | |||
1 | //Compile with: | ||
2 | //gcc -g eina_hash_04.c -o eina_hash_04 `pkg-config --cflags --libs eina` | ||
3 | |||
4 | #include <stdio.h> | ||
5 | #include <string.h> | ||
6 | #include <Eina.h> | ||
7 | |||
8 | /* | ||
9 | * Eina Hash - phonebook | ||
10 | * | ||
11 | * This example demonstrate the use of Eina Hash by implementing a phonebook | ||
12 | * that stores its contact data into the hash. | ||
13 | * | ||
14 | * It indexes the phone numbers by Contact Full Name, so it's a hash with | ||
15 | * string keys. | ||
16 | */ | ||
17 | |||
18 | struct _Phone_Entry { | ||
19 | const char *name; // Full name. | ||
20 | const char *number; // Phone number. | ||
21 | }; | ||
22 | |||
23 | typedef struct _Phone_Entry Phone_Entry; | ||
24 | |||
25 | static Phone_Entry _start_entries[] = { | ||
26 | { "Wolfgang Amadeus Mozart", "+01 23 456-78910" }, | ||
27 | { "Ludwig van Beethoven", "+12 34 567-89101" }, | ||
28 | { "Richard Georg Strauss", "+23 45 678-91012" }, | ||
29 | { "Heitor Villa-Lobos", "+34 56 789-10123" }, | ||
30 | { NULL, NULL } | ||
31 | }; // _start_entries | ||
32 | |||
33 | static void | ||
34 | _phone_entry_free_cb(void *data) | ||
35 | { | ||
36 | free(data); | ||
37 | } | ||
38 | |||
39 | static Eina_Bool | ||
40 | _phone_book_foreach_cb(const Eina_Hash *phone_book, const void *key, | ||
41 | void *data, void *fdata) | ||
42 | { | ||
43 | const char *name = key; | ||
44 | const char *number = data; | ||
45 | printf("%s: %s\n", name, number); | ||
46 | |||
47 | // Return EINA_FALSE to stop this callback from being called | ||
48 | return EINA_TRUE; | ||
49 | } | ||
50 | |||
51 | int | ||
52 | main(int argc, const char *argv[]) | ||
53 | { | ||
54 | Eina_Hash *phone_book = NULL; | ||
55 | int i; | ||
56 | const char *entry_name = "Heitor Villa-Lobos"; | ||
57 | char *phone = NULL; | ||
58 | Eina_Bool r; | ||
59 | Eina_Iterator *it; | ||
60 | void *data; | ||
61 | |||
62 | eina_init(); | ||
63 | |||
64 | phone_book = eina_hash_string_djb2_new(_phone_entry_free_cb); | ||
65 | |||
66 | // Add initial entries to our hash | ||
67 | for (i = 0; _start_entries[i].name != NULL; i++) | ||
68 | { | ||
69 | eina_hash_add(phone_book, _start_entries[i].name, | ||
70 | strdup(_start_entries[i].number)); | ||
71 | } | ||
72 | |||
73 | // Look for a specific entry and get its phone number | ||
74 | phone = eina_hash_find(phone_book, entry_name); | ||
75 | if (phone) | ||
76 | { | ||
77 | printf("Printing entry.\n"); | ||
78 | printf("Name: %s\n", entry_name); | ||
79 | printf("Number: %s\n\n", phone); | ||
80 | } | ||
81 | |||
82 | // Delete this entry | ||
83 | r = eina_hash_del(phone_book, entry_name, NULL); | ||
84 | printf("Hash entry successfully deleted? %d\n\n", r); | ||
85 | |||
86 | // Modify the pointer data of an entry and free the old one | ||
87 | phone = eina_hash_modify(phone_book, "Richard Georg Strauss", | ||
88 | strdup("+23 45 111-11111")); | ||
89 | free(phone); | ||
90 | |||
91 | // Modify or add an entry to the hash with eina_hash_set | ||
92 | // Let's first add a new entry | ||
93 | eina_error_set(0); | ||
94 | phone = eina_hash_set(phone_book, "Raul Seixas", | ||
95 | strdup("+55 01 234-56789")); | ||
96 | if (!phone) | ||
97 | { | ||
98 | Eina_Error err = eina_error_get(); | ||
99 | if (!err) | ||
100 | { | ||
101 | printf("No previous phone found for Raul Seixas. "); | ||
102 | printf("Creating new entry.\n"); | ||
103 | } | ||
104 | else | ||
105 | printf("Error when setting phone for Raul Seixas\n"); | ||
106 | } | ||
107 | else | ||
108 | { | ||
109 | printf("Old phone for Raul Seixas was %s\n", phone); | ||
110 | free(phone); | ||
111 | } | ||
112 | |||
113 | printf("\n"); | ||
114 | |||
115 | // Now change the phone number | ||
116 | eina_error_set(0); | ||
117 | phone = eina_hash_set(phone_book, "Raul Seixas", | ||
118 | strdup("+55 02 222-22222")); | ||
119 | if (phone) | ||
120 | { | ||
121 | printf("Changing phone for Raul Seixas to +55 02 222-22222. "); | ||
122 | printf("Old phone was %s\n", phone); | ||
123 | free(phone); | ||
124 | } | ||
125 | else | ||
126 | { | ||
127 | Eina_Error err = eina_error_get(); | ||
128 | if (err) | ||
129 | printf("Error when changing phone for Raul Seixas\n"); | ||
130 | else | ||
131 | { | ||
132 | printf("No previous phone found for Raul Seixas. "); | ||
133 | printf("Creating new entry.\n"); | ||
134 | } | ||
135 | } | ||
136 | |||
137 | // There are many ways to iterate over our Phone book. | ||
138 | // First, iterate showing the names and associated numbers. | ||
139 | printf("List of phones:\n"); | ||
140 | eina_hash_foreach(phone_book, _phone_book_foreach_cb, NULL); | ||
141 | printf("\n"); | ||
142 | |||
143 | // Now iterate using an iterator | ||
144 | printf("List of phones:\n"); | ||
145 | it = eina_hash_iterator_tuple_new(phone_book); | ||
146 | while (eina_iterator_next(it, &data)) | ||
147 | { | ||
148 | Eina_Hash_Tuple *t = data; | ||
149 | const char *name = t->key; | ||
150 | const char *number = t->data; | ||
151 | printf("%s: %s\n", name, number); | ||
152 | } | ||
153 | eina_iterator_free(it); // Always free the iterator after its use | ||
154 | printf("\n"); | ||
155 | |||
156 | // Just iterate over the keys (names) | ||
157 | printf("List of names in the phone book:\n"); | ||
158 | it = eina_hash_iterator_key_new(phone_book); | ||
159 | while (eina_iterator_next(it, &data)) | ||
160 | { | ||
161 | const char *name = data; | ||
162 | printf("%s\n", name); | ||
163 | } | ||
164 | eina_iterator_free(it); | ||
165 | printf("\n"); | ||
166 | |||
167 | // Just iterate over the data (numbers) | ||
168 | printf("List of numbers in the phone book:\n"); | ||
169 | it = eina_hash_iterator_data_new(phone_book); | ||
170 | while (eina_iterator_next(it, &data)) | ||
171 | { | ||
172 | const char *number = data; | ||
173 | printf("%s\n", number); | ||
174 | } | ||
175 | eina_iterator_free(it); | ||
176 | printf("\n"); | ||
177 | |||
178 | // Check how many items are in the phone book | ||
179 | printf("There are %d items in the hash.\n\n", | ||
180 | eina_hash_population(phone_book)); | ||
181 | |||
182 | // Change the name (key) on an entry | ||
183 | eina_hash_move(phone_book, "Raul Seixas", "Alceu Valenca"); | ||
184 | printf("List of phones after change:\n"); | ||
185 | eina_hash_foreach(phone_book, _phone_book_foreach_cb, NULL); | ||
186 | printf("\n"); | ||
187 | |||
188 | // Empty the phone book, but don't destroy it | ||
189 | eina_hash_free_buckets(phone_book); | ||
190 | printf("There are %d items in the hash.\n\n", | ||
191 | eina_hash_population(phone_book)); | ||
192 | |||
193 | // Phone book could still be used, but we are freeing it since we are | ||
194 | // done for now | ||
195 | eina_hash_free(phone_book); | ||
196 | |||
197 | eina_shutdown(); | ||
198 | } | ||