eina_value_01.c

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eina_value_01.c
//Compile with:
//gcc eina_value_01.c -o eina_value_01 `pkg-config --cflags --libs eina`
#include <Eina.h>
int main(int argc, char **argv)
{
(void)argc;
(void)argv;
Eina_Value v;
int i;
char *newstr;
eina_init();
eina_value_setup(&v, EINA_VALUE_TYPE_INT);
eina_value_set(&v, 123);
eina_value_get(&v, &i);
printf("v=%d\n", i);
newstr = eina_value_to_string(&v);
printf("v as string: %s\n", newstr);
free(newstr); // it was allocated by eina_value_to_string()
eina_value_flush(&v); // destroy v contents, will not use anymore
const char *s;
eina_value_setup(&v, EINA_VALUE_TYPE_STRING);
eina_value_set(&v, "My string");
eina_value_get(&v, &s);
printf("v=%s (pointer: %p)\n", s, s);
newstr = eina_value_to_string(&v);
printf("v as string: %s (pointer: %p)\n", newstr, newstr);
free(newstr); // it was allocated by eina_value_to_string()
eina_value_flush(&v); // destroy v contents, string 's' is not valid anymore!
Eina_Value otherv;
eina_value_setup(&otherv, EINA_VALUE_TYPE_STRING);
eina_value_setup(&v, EINA_VALUE_TYPE_INT);
// convert from int to string:
eina_value_set(&v, 123);
eina_value_convert(&v, &otherv);
eina_value_get(&otherv, &s);
printf("otherv=%s\n", s);
// and the other way around!
eina_value_set(&otherv, "33");
eina_value_convert(&otherv, &v);
eina_value_get(&v, &i);
printf("v=%d\n", i);
eina_value_flush(&otherv);
eina_value_flush(&v);
eina_shutdown();
}
Eina.h
Eina Utility library.
eina_shutdown
EINA_API int eina_shutdown(void)
Shuts down the Eina library.
Definition: eina_main.c:379
eina_init
EINA_API int eina_init(void)
Initializes the Eina library.
Definition: eina_main.c:291
EINA_VALUE_TYPE_INT
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_INT
manages int type.
Definition: eina_value.c:5602
EINA_VALUE_TYPE_STRING
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_STRING
manages string type.
Definition: eina_value.c:5608
eina_value_to_string
EINA_API char * eina_value_to_string(const Eina_Value *value)
Converts value to string.
Definition: eina_value.c:5719
eina_value_convert
EINA_API Eina_Bool eina_value_convert(const Eina_Value *value, Eina_Value *convert)
Converts one value to another type.
Definition: eina_value.c:5688
_Eina_Value
defines the contents of a value
Definition: eina_value.h:662