Class
GioMemoryOutputStream
Description [src]
class Gio.MemoryOutputStream : Gio.OutputStream
implements Gio.PollableOutputStream, Gio.Seekable {
/* No available fields */
}GMemoryOutputStream is a class for using arbitrary
memory chunks as output for GIO streaming output operations.
As of GLib 2.34, GMemoryOutputStream trivially implements
GPollableOutputStream: it always polls as ready.
Constructors
g_memory_output_stream_new_resizable
Creates a new GMemoryOutputStream, using g_realloc() and g_free()
for memory allocation.
since: 2.36
Instance methods
g_memory_output_stream_get_data_size
Returns the number of bytes from the start up to including the last byte written in the stream that has not been truncated away.
since: 2.18
g_memory_output_stream_get_size
Gets the size of the currently allocated data area (available from g_memory_output_stream_get_data()).
g_memory_output_stream_steal_as_bytes
Returns data from the ostream as a GBytes. ostream must be
closed before calling this function.
since: 2.34
g_memory_output_stream_steal_data
Gets any loaded data from the ostream. Ownership of the data
is transferred to the caller; when no longer needed it must be
freed using the free function set in ostream‘s
GMemoryOutputStream:destroy-function property.
since: 2.26
Methods inherited from GOutputStream (31)
Please see GOutputStream for a full list of methods.
Methods inherited from GPollableOutputStream (5)
g_pollable_output_stream_can_poll
Checks if stream is actually pollable. Some classes may implement
GPollableOutputStream but have only certain instances of that
class be pollable. If this method returns FALSE, then the behavior
of other GPollableOutputStream methods is undefined.
since: 2.28
g_pollable_output_stream_create_source
Creates a GSource that triggers when stream can be written, or
cancellable is triggered or an error occurs. The callback on the
source is of the GPollableSourceFunc type.
since: 2.28
g_pollable_output_stream_is_writable
Checks if stream can be written.
since: 2.28
g_pollable_output_stream_write_nonblocking
Attempts to write up to count bytes from buffer to stream, as
with g_output_stream_write(). If stream is not currently writable,
this will immediately return G_IO_ERROR_WOULD_BLOCK, and you can
use g_pollable_output_stream_create_source() to create a GSource
that will be triggered when stream is writable.
g_pollable_output_stream_writev_nonblocking
Attempts to write the bytes contained in the n_vectors vectors to stream,
as with g_output_stream_writev(). If stream is not currently writable,
this will immediately return %G_POLLABLE_RETURN_WOULD_BLOCK, and you can
use g_pollable_output_stream_create_source() to create a GSource
that will be triggered when stream is writable. error will not be
set in that case.
since: 2.60
Methods inherited from GSeekable (5)
g_seekable_can_seek
Tests if the stream supports the GSeekableIface.
g_seekable_can_truncate
Tests if the length of the stream can be adjusted with g_seekable_truncate().
g_seekable_seek
Seeks in the stream by the given offset, modified by type.
g_seekable_tell
Tells the current position within the stream.
g_seekable_truncate
Sets the length of the stream to offset. If the stream was previously
larger than offset, the extra data is discarded. If the stream was
previously shorter than offset, it is extended with NUL (‘\0’) bytes.
Properties
Gio.MemoryOutputStream:destroy-function
Function called with the buffer as argument when the stream is destroyed.
since: 2.24
Gio.MemoryOutputStream:realloc-function
Function with realloc semantics called to enlarge the buffer.
since: 2.24
Signals
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Class structure
struct GioMemoryOutputStreamClass {
GOutputStreamClass parent_class;
void (* _g_reserved1) (
void
);
void (* _g_reserved2) (
void
);
void (* _g_reserved3) (
void
);
void (* _g_reserved4) (
void
);
void (* _g_reserved5) (
void
);
}No description available.
Class members
parent_class: GOutputStreamClassNo description available.
_g_reserved1: void (* _g_reserved1) ( void )No description available.
_g_reserved2: void (* _g_reserved2) ( void )No description available.
_g_reserved3: void (* _g_reserved3) ( void )No description available.
_g_reserved4: void (* _g_reserved4) ( void )No description available.
_g_reserved5: void (* _g_reserved5) ( void )No description available.