eina_value_03.c

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eina_value_03.c
//Compile with:
//gcc eina_value_03.c -o eina_value_03 `pkg-config --cflags --libs eina`
#include <Eina.h>
#include <sys/time.h>
static Eina_Bool
_tz_setup(const Eina_Value_Type *type, void *mem)
{
memset(mem, 0, type->value_size);
return EINA_TRUE;
}
static Eina_Bool
_tz_flush(const Eina_Value_Type *type EINA_UNUSED, void *mem EINA_UNUSED)
{
return EINA_TRUE;
}
static Eina_Bool
_tz_copy(const Eina_Value_Type *type EINA_UNUSED, const void *src, void * dst)
{
struct timezone *tzsrc = (struct timezone *)src;
struct timezone *tzdst = dst;
*tzdst = *tzsrc;
return EINA_TRUE;
}
static int
_tz_compare(const Eina_Value_Type *type EINA_UNUSED, const void *a, const void *b)
{
struct timezone tza = *(struct timezone*)a;
struct timezone tzb = *(struct timezone*)b;
if (tza.tz_minuteswest < tzb.tz_minuteswest)
return -1;
else if (tza.tz_minuteswest > tzb.tz_minuteswest)
return 1;
return 0;
}
static Eina_Bool
_tz_pset(const Eina_Value_Type *type EINA_UNUSED, void *mem, const void *ptr)
{
*(struct timezone*)mem = *(struct timezone*)ptr;
return EINA_TRUE;
}
static Eina_Bool
_tz_vset(const Eina_Value_Type *type, void *mem, va_list args)
{
const struct timezone tz = va_arg(args, struct timezone);
return _tz_pset(type, mem, &tz);
}
static Eina_Bool
_tz_pget(const Eina_Value_Type *type, const void *mem, void *ptr)
{
memcpy(ptr, mem, type->value_size);
return EINA_TRUE;
}
static Eina_Bool
_tz_convert_to(const Eina_Value_Type *type EINA_UNUSED, const Eina_Value_Type *convert, const void *type_mem, void *convert_mem)
{
struct timezone v = *(struct timezone*)type_mem;
if (convert == EINA_VALUE_TYPE_UCHAR)
{
unsigned char other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_USHORT)
{
unsigned short other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_UINT)
{
unsigned int other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if ((convert == EINA_VALUE_TYPE_ULONG) || (convert == EINA_VALUE_TYPE_TIMESTAMP))
{
unsigned long other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_UINT64)
{
uint64_t other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_CHAR)
{
char other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_SHORT)
{
short other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_INT)
{
int other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_LONG)
{
long other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_INT64)
{
int64_t other_mem = v.tz_minuteswest;
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
else if (convert == EINA_VALUE_TYPE_FLOAT)
return eina_value_type_pset(convert, convert_mem, &v.tz_minuteswest);
else if (convert == EINA_VALUE_TYPE_DOUBLE)
return eina_value_type_pset(convert, convert_mem, &v.tz_minuteswest);
else if (convert == EINA_VALUE_TYPE_STRINGSHARE ||
convert == EINA_VALUE_TYPE_STRING)
{
const char *other_mem;
char buf[64];
snprintf(buf, sizeof(buf), "%d", v.tz_minuteswest);
other_mem = buf; /* required due &buf == buf */
return eina_value_type_pset(convert, convert_mem, &other_mem);
}
return EINA_FALSE;
}
static Eina_Value_Type TZ_TYPE = {
EINA_VALUE_TYPE_VERSION,
sizeof(struct timezone),
"struct timezone",
_tz_setup,
_tz_flush,
_tz_copy,
_tz_compare,
_tz_convert_to,
NULL, //No convert from
_tz_vset,
_tz_pset,
_tz_pget
};
int main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
Eina_Value vtv, vtz;
struct timeval tv;
struct timezone tz;
char *s;
eina_init();
eina_value_setup(&vtv, EINA_VALUE_TYPE_TIMEVAL);
eina_value_setup(&vtz, &TZ_TYPE);
gettimeofday(&tv, &tz);
eina_value_set(&vtv, tv);
eina_value_set(&vtz, tz);
s = eina_value_to_string(&vtv);
printf("time: %s\n", s);
free(s);
s = eina_value_to_string(&vtz);
printf("timezone: %s\n", s);
free(s);
eina_value_free(&vtz);
eina_value_free(&vtv);
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_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
EINA_FALSE
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition: eina_types.h:533
Eina_Bool
unsigned char Eina_Bool
Type to mimic a boolean.
Definition: eina_types.h:527
EINA_UNUSED
#define EINA_UNUSED
Used to indicate that a function parameter is purposely unused.
Definition: eina_types.h:339
EINA_VALUE_TYPE_CHAR
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_CHAR
manages char type.
Definition: eina_value.c:5600
EINA_VALUE_TYPE_TIMEVAL
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_TIMEVAL
manages 'struct timeval' type
Definition: eina_value.c:5612
EINA_VALUE_TYPE_INT64
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_INT64
manages integer of 64 bits type.
Definition: eina_value.c:5604
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_UINT
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_UINT
manages unsigned int type.
Definition: eina_value.c:5596
EINA_VALUE_TYPE_TIMESTAMP
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_TIMESTAMP
manages unsigned long type used for timestamps.
Definition: eina_value.c:5598
EINA_VALUE_TYPE_USHORT
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_USHORT
manages unsigned short type.
Definition: eina_value.c:5595
EINA_VALUE_TYPE_UCHAR
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_UCHAR
manages unsigned char type.
Definition: eina_value.c:5593
EINA_VALUE_TYPE_SHORT
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_SHORT
manages short type.
Definition: eina_value.c:5601
EINA_VALUE_TYPE_STRING
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_STRING
manages string type.
Definition: eina_value.c:5608
EINA_VALUE_TYPE_DOUBLE
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_DOUBLE
manages double type.
Definition: eina_value.c:5606
EINA_VALUE_TYPE_STRINGSHARE
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_STRINGSHARE
manages stringshared string type.
Definition: eina_value.c:5607
EINA_VALUE_TYPE_FLOAT
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_FLOAT
manages float type.
Definition: eina_value.c:5605
EINA_VALUE_TYPE_ULONG
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_ULONG
manages unsigned long type.
Definition: eina_value.c:5597
EINA_VALUE_TYPE_UINT64
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_UINT64
manages unsigned integer of 64 bits type.
Definition: eina_value.c:5599
EINA_VALUE_TYPE_LONG
EINA_API const Eina_Value_Type * EINA_VALUE_TYPE_LONG
manages long type.
Definition: eina_value.c:5603
EINA_VALUE_TYPE_VERSION
#define EINA_VALUE_TYPE_VERSION
Current API version, used to validate type.
Definition: eina_value.h:3669
eina_value_free
EINA_API void eina_value_free(Eina_Value *value)
Frees value and its data.
Definition: eina_value.c:5645
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_Type
API to access values.
Definition: eina_value.h:3678
_Eina_Value
defines the contents of a value
Definition: eina_value.h:662