xpc_array_create(3) BSD Library Functions Manual xpc_array_create(3)NAME
xpc_array_create — creation and management of XPC arrays
SYNOPSIS
#include <xpc/xpc.h>
xpc_object_t
xpc_array_create(const xpc_object_t *objects, size_t count);
void
xpc_array_set_value(xpc_object_t array, size_t index,
xpc_object_t value);
void
xpc_array_append_value(xpc_object_t array, xpc_object_t value);
xpc_object_t
xpc_array_get_value(xpc_object_t array, size_t index);
size_t
xpc_array_get_count(xpc_object_t array);
bool
xpc_array_apply(xpc_object_t array, xpc_array_applier_t applier);
void
xpc_array_set_bool(xpc_object_t array, size_t index, bool value);
void
xpc_array_set_int64(xpc_object_t array, size_t index, int64_t value);
void
xpc_array_set_uint64(xpc_object_t array, size_t index, uint64_t value);
void
xpc_array_set_double(xpc_object_t array, size_t index, double value);
void
xpc_array_set_date(xpc_object_t array, size_t index, int64_t value);
void
xpc_array_set_data(xpc_object_t array, size_t index, const void *bytes,
size_t length);
void
xpc_array_set_string(xpc_object_t array, size_t index,
const char *value);
void
xpc_array_set_uuid(xpc_object_t array, size_t index, const uuid_t value);
void
xpc_array_set_fd(xpc_object_t array, size_t index, int value);
void
xpc_array_set_connection(xpc_object_t array, size_t index,
xpc_connection_t value);
bool
xpc_array_get_bool(xpc_object_t array, size_t index);
int64_t
xpc_array_get_int64(xpc_object_t array, size_t index);
uint64_t
xpc_array_get_uint64(xpc_object_t array, size_t index);
double
xpc_array_get_double(xpc_object_t array, size_t index);
int64_t
xpc_array_get_date(xpc_object_t array, size_t index);
const void *
xpc_array_get_data(xpc_object_t array, size_t index, size_t *length);
const uint8_t *
xpc_array_get_uuid(xpc_object_t array, size_t index);
const char *
xpc_array_get_string(xpc_object_t array, size_t index);
int
xpc_array_get_fd(xpc_object_t array, size_t index);
xpc_connection_t
xpc_array_get_connection(xpc_object_t array, size_t index);
ARRAYS
XPC arrays are collections of XPC objects ordered by index. The index is
zero-based. XPC arrays are contiguous, and values must exist at all
indexes between zero and the greatest index of the array. A hole in the
array can be simulated by using a null object as returned by
xpc_null_create(3).
CREATION
The xpc_array_create() function returns a newly created array. The caller
may optionally provide objects, a C array of XPC object references, to
initialize the array. The count is used to specify the size of the C
array. If objects is NULL, then count must be zero. If count specifies
more elements than are actually present in values or if values is NULL
and count is non-zero, the behavior is undefined.
GETTING AND SETTING VALUES
The xpc_array_append_value() function may be used to append a value to
the end of an array. This operation increases the count of the values in
the array by one.
The value of a specific index in the array may be set using the
xpc_array_set_value() function. The value must be non-NULL, and the
index must already exist (i.e. less than the count provided at creation
or extended through previous append operations).
The value at a specific index of an array may be retrieved using the
xpc_array_get_value() function. The result of getting a non-existing
index (i.e. one that was not specified at creation or through a previous
append operation) in undefined.
PRIMITIVE GET AND SET FUNCTIONS
Various functions exist for retrieving primitive C and operating system
types directly from an array without the need for an intermediate boxed
object. See xpc_object(3) for more information.
The special XPC_ARRAY_APPEND constant may be used to append a value to
the end of the array instead of operating on a specific index.
SEE ALSOxpc_object(3), xpc_objects(3), xpc_dictionary_create(3)Darwin 1 July, 2011 Darwin
