9
// The struct that will be loaded and saved.
10
// note that only the members described in the eet_data_descriptor
11
// will be automatically handled. The other members will have their
12
// space reserved and zeroed (as it uses calloc()), but not
13
// saved or loaded from eet files.
16
unsigned int version; // it is recommended to use versioned configuration!
19
int not_saved_value; // example of not saved data inside!
23
// string that represents the entry in eet file, you might like to have
24
// different profiles or so in the same file, this is possible with
26
static const char MY_CONF_FILE_ENTRY[] = "config";
28
// keep the descriptor static global, so it can be
29
// shared by different functions (load/save) of this and only this
31
static Eet_Data_Descriptor * _my_conf_descriptor;
34
_my_conf_descriptor_init(void)
36
Eet_Data_Descriptor_Class eddc;
38
// The class describe the functions to use to create the type and its
39
// full allocated size.
41
// Eina types are very convenient, so use them to create the descriptor,
42
// so we get eina_list, eina_hash and eina_stringshare automatically!
44
// The STREAM variant is better for configuration files as the values
45
// will likely change a lot.
47
// The other variant, FILE, is good for caches and things that are just
48
// appended, but needs to take care when changing strings and files must
49
// be kept open so mmap()ed strings will be kept alive.
50
EET_EINA_STREAM_DATA_DESCRIPTOR_CLASS_SET(&eddc, My_Conf_Type);
51
_my_conf_descriptor = eet_data_descriptor_stream_new(&eddc);
53
// Describe the members to be saved:
54
// Use a temporary macro so we don't type a lot, also avoid errors:
55
#define MY_CONF_ADD_BASIC(member, eet_type)\
56
EET_DATA_DESCRIPTOR_ADD_BASIC\
57
(_my_conf_descriptor, My_Conf_Type, # member, member, eet_type)
59
MY_CONF_ADD_BASIC(version, EET_T_UINT);
60
MY_CONF_ADD_BASIC(name, EET_T_STRING);
61
MY_CONF_ADD_BASIC(id, EET_T_INT);
62
MY_CONF_ADD_BASIC(enabled, EET_T_UCHAR);
64
#undef MY_CONF_ADD_BASIC
65
} /* _my_conf_descriptor_init */
68
_my_conf_descriptor_shutdown(void)
70
eet_data_descriptor_free(_my_conf_descriptor);
71
} /* _my_conf_descriptor_shutdown */
76
My_Conf_Type * my_conf = calloc(1, sizeof(My_Conf_Type));
79
fprintf(stderr, "ERROR: could not calloc My_Conf_Type\n");
83
my_conf->version = 0x112233;
84
my_conf->enabled = EINA_TRUE;
89
_my_conf_free(My_Conf_Type * my_conf)
91
eina_stringshare_del(my_conf->name);
96
_my_conf_load(const char * filename)
98
My_Conf_Type * my_conf;
99
Eet_File * ef = eet_open(filename, EET_FILE_MODE_READ);
102
fprintf(stderr, "ERROR: could not open '%s' for read\n", filename);
106
my_conf = eet_data_read(ef, _my_conf_descriptor, MY_CONF_FILE_ENTRY);
110
if (my_conf->version < 0x112233)
113
"WARNING: version %#x was too old, upgrading it to %#x\n",
114
my_conf->version, 0x112233);
116
my_conf->version = 0x112233;
117
my_conf->enabled = EINA_TRUE;
123
} /* _my_conf_load */
126
_my_conf_save(const My_Conf_Type * my_conf, const char * filename)
134
len = eina_strlcpy(tmp, filename, sizeof(tmp));
135
if (len + 12 >= (int)sizeof(tmp))
137
fprintf(stderr, "ERROR: file name is too big: %s\n", filename);
144
snprintf(tmp + len, 12, ".%u", i);
147
while (stat(tmp, &st) == 0);
149
ef = eet_open(tmp, EET_FILE_MODE_WRITE);
152
fprintf(stderr, "ERROR: could not open '%s' for write\n", tmp);
157
(ef, _my_conf_descriptor, MY_CONF_FILE_ENTRY, my_conf, EINA_TRUE);
163
rename(tmp, filename);
167
} /* _my_conf_save */
169
int main(int argc, char * argv[])
171
My_Conf_Type * my_conf;
176
fprintf(stderr, "Usage:\n\t%s <input> <output>\n\n", argv[0]);
182
_my_conf_descriptor_init();
184
my_conf = _my_conf_load(argv[1]);
187
printf("creating new configuration.\n");
188
my_conf = _my_conf_new();
196
printf("My_Conf_Type:\n"
202
my_conf->name ? my_conf->name : "",
206
if (!_my_conf_save(my_conf, argv[2]))
209
_my_conf_free(my_conf);
212
_my_conf_descriptor_shutdown();
added
removed
src/examples/eet-data-simple.c
