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Diffstat (limited to 'libraries/eina/src/examples/eina_hash_07.c')
-rw-r--r-- | libraries/eina/src/examples/eina_hash_07.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/libraries/eina/src/examples/eina_hash_07.c b/libraries/eina/src/examples/eina_hash_07.c deleted file mode 100644 index 1464e6b..0000000 --- a/libraries/eina/src/examples/eina_hash_07.c +++ /dev/null | |||
@@ -1,222 +0,0 @@ | |||
1 | //Compile with: | ||
2 | //gcc -g eina_hash_07.c -o eina_hash_07 `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 const char *_nicknames[] = { | ||
34 | "mozzart", | ||
35 | "betho", | ||
36 | "george", | ||
37 | "hector", | ||
38 | NULL | ||
39 | }; | ||
40 | |||
41 | static void | ||
42 | _phone_entry_free_cb(void *data) | ||
43 | { | ||
44 | free(data); | ||
45 | } | ||
46 | |||
47 | static Eina_Bool | ||
48 | _phone_book_foreach_cb(const Eina_Hash *phone_book, const void *key, | ||
49 | void *data, void *fdata) | ||
50 | { | ||
51 | Phone_Entry **pe = (Phone_Entry **)key; | ||
52 | const char *nick = data; | ||
53 | printf("%s: %s, nick=%s\n", (*pe)->name, (*pe)->number, nick); | ||
54 | |||
55 | // Return EINA_FALSE to stop this callback from being called | ||
56 | return EINA_TRUE; | ||
57 | } | ||
58 | |||
59 | int | ||
60 | main(int argc, const char *argv[]) | ||
61 | { | ||
62 | Eina_Hash *phone_book = NULL; | ||
63 | int i; | ||
64 | Phone_Entry *entry_vl = &_start_entries[3]; | ||
65 | Phone_Entry *p = NULL; | ||
66 | char *nick = NULL; | ||
67 | Eina_Bool r; | ||
68 | Eina_Iterator *it; | ||
69 | void *data; | ||
70 | |||
71 | eina_init(); | ||
72 | |||
73 | phone_book = eina_hash_pointer_new(_phone_entry_free_cb); | ||
74 | |||
75 | // Add initial entries to our hash | ||
76 | for (i = 0; _start_entries[i].name != NULL; i++) | ||
77 | { | ||
78 | p = &_start_entries[i]; | ||
79 | eina_hash_add(phone_book, &p, | ||
80 | strdup(_nicknames[i])); | ||
81 | } | ||
82 | printf("Phonebook:\n"); | ||
83 | eina_hash_foreach(phone_book, _phone_book_foreach_cb, NULL); | ||
84 | printf("\n"); | ||
85 | |||
86 | // Look for a specific entry and get its nickname | ||
87 | nick = eina_hash_find(phone_book, &entry_vl); | ||
88 | if (nick) | ||
89 | { | ||
90 | printf("Printing entry.\n"); | ||
91 | printf("Name: %s\n", entry_vl->name); | ||
92 | printf("Number: %s\n", entry_vl->number); | ||
93 | printf("Nick: %s\n\n", nick); | ||
94 | } | ||
95 | |||
96 | // Delete this entry | ||
97 | r = eina_hash_del(phone_book, &entry_vl, NULL); | ||
98 | printf("Hash entry successfully deleted? %d\n\n", r); | ||
99 | |||
100 | // Modify the pointer data of an entry and free the old one | ||
101 | p = &_start_entries[2]; | ||
102 | nick = eina_hash_modify(phone_book, &p, | ||
103 | strdup("el jorge")); | ||
104 | free(nick); | ||
105 | |||
106 | // Modify or add an entry to the hash with eina_hash_set | ||
107 | // Let's first add a new entry | ||
108 | eina_error_set(0); | ||
109 | Phone_Entry *p1 = malloc(sizeof(*p1)); | ||
110 | p1->name = "Raul Seixas"; | ||
111 | p1->number = "+55 01 234-56789"; | ||
112 | nick = eina_hash_set(phone_book, &p1, | ||
113 | strdup("raulzito")); | ||
114 | if (!nick) | ||
115 | { | ||
116 | Eina_Error err = eina_error_get(); | ||
117 | if (!err) | ||
118 | { | ||
119 | printf("No previous nick found for Raul Seixas. "); | ||
120 | printf("Creating new entry.\n"); | ||
121 | } | ||
122 | else | ||
123 | printf("Error when setting nick for Raul Seixas\n"); | ||
124 | } | ||
125 | else | ||
126 | { | ||
127 | printf("Old nick for Raul Seixas was %s\n", nick); | ||
128 | free(nick); | ||
129 | } | ||
130 | |||
131 | printf("\n"); | ||
132 | |||
133 | // Now change the nick | ||
134 | eina_error_set(0); | ||
135 | nick = eina_hash_set(phone_book, &p1, | ||
136 | strdup("raulzao")); | ||
137 | if (nick) | ||
138 | { | ||
139 | printf("Changing nick for Raul Seixas to raulzao. "); | ||
140 | printf("Old nick was %s\n", nick); | ||
141 | free(nick); | ||
142 | } | ||
143 | else | ||
144 | { | ||
145 | Eina_Error err = eina_error_get(); | ||
146 | if (err) | ||
147 | printf("Error when changing nick for Raul Seixas\n"); | ||
148 | else | ||
149 | { | ||
150 | printf("No previous nick found for Raul Seixas. "); | ||
151 | printf("Creating new entry.\n"); | ||
152 | } | ||
153 | } | ||
154 | |||
155 | // There are many ways to iterate over our Phone book. | ||
156 | // First, iterate showing the names, phones and associated nicks. | ||
157 | printf("Phonebook:\n"); | ||
158 | eina_hash_foreach(phone_book, _phone_book_foreach_cb, NULL); | ||
159 | printf("\n"); | ||
160 | |||
161 | // Now iterate using an iterator | ||
162 | printf("Phonebook:\n"); | ||
163 | it = eina_hash_iterator_tuple_new(phone_book); | ||
164 | while (eina_iterator_next(it, &data)) | ||
165 | { | ||
166 | Eina_Hash_Tuple *t = data; | ||
167 | Phone_Entry **pe = (Phone_Entry **)t->key; | ||
168 | nick = t->data; | ||
169 | printf("%s: %s, nick=%s\n", (*pe)->name, (*pe)->number, nick); | ||
170 | } | ||
171 | eina_iterator_free(it); // Always free the iterator after its use | ||
172 | printf("\n"); | ||
173 | |||
174 | // Just iterate over the keys (names) | ||
175 | printf("List of names/numbers in the phone book:\n"); | ||
176 | it = eina_hash_iterator_key_new(phone_book); | ||
177 | while (eina_iterator_next(it, &data)) | ||
178 | { | ||
179 | Phone_Entry **pe = (Phone_Entry **)data; | ||
180 | printf("%s: %s\n", (*pe)->name, (*pe)->number); | ||
181 | } | ||
182 | eina_iterator_free(it); | ||
183 | printf("\n"); | ||
184 | |||
185 | // Just iterate over the data (nicks) | ||
186 | printf("List of nicks in the phone book:\n"); | ||
187 | it = eina_hash_iterator_data_new(phone_book); | ||
188 | while (eina_iterator_next(it, &data)) | ||
189 | { | ||
190 | nick = data; | ||
191 | printf("%s\n", nick); | ||
192 | } | ||
193 | eina_iterator_free(it); | ||
194 | printf("\n"); | ||
195 | |||
196 | // Check how many items are in the phone book | ||
197 | printf("There are %d items in the hash.\n\n", | ||
198 | eina_hash_population(phone_book)); | ||
199 | |||
200 | // Change the name (key) on an entry | ||
201 | Phone_Entry *p2 = malloc(sizeof(*p2)); | ||
202 | p2->name = "Alceu Valenca"; | ||
203 | p2->number = "000000000000"; | ||
204 | eina_hash_move(phone_book, p1, p2); | ||
205 | printf("List of phones after change:\n"); | ||
206 | eina_hash_foreach(phone_book, _phone_book_foreach_cb, NULL); | ||
207 | printf("\n"); | ||
208 | |||
209 | // Empty the phone book, but don't destroy it | ||
210 | eina_hash_free_buckets(phone_book); | ||
211 | printf("There are %d items in the hash.\n\n", | ||
212 | eina_hash_population(phone_book)); | ||
213 | |||
214 | // Phone book could still be used, but we are freeing it since we are | ||
215 | // done for now | ||
216 | eina_hash_free(phone_book); | ||
217 | |||
218 | free(p1); | ||
219 | free(p2); | ||
220 | |||
221 | eina_shutdown(); | ||
222 | } | ||