Class
GioFileOutputStream
Description
class Gio.FileOutputStream : Gio.OutputStream {
parent_instance: GOutputStream
}GFileOutputStream provides output streams that write their
content to a file.
GFileOutputStream implements GSeekable, which allows the output
stream to jump to arbitrary positions in the file and to truncate
the file, provided the filesystem of the file supports these operations.
To find the position of a file output stream, use g_seekable_tell().
To find out if a file output stream supports seeking, use
g_seekable_can_seek().To position a file output stream, use
g_seekable_seek(). To find out if a file output stream supports
truncating, use g_seekable_can_truncate(). To truncate a file output
stream, use g_seekable_truncate().
Instance methods
g_file_output_stream_get_etag
Gets the entity tag for the file when it has been written. This must be called after the stream has been written and closed, as the etag can change while writing.
g_file_output_stream_query_info
Queries a file output stream for the given attributes.
This function blocks while querying the stream. For the asynchronous
version of this function, see g_file_output_stream_query_info_async().
While the stream is blocked, the stream will set the pending flag
internally, and any other operations on the stream will fail with
G_IO_ERROR_PENDING.
g_file_output_stream_query_info_async
Asynchronously queries the stream for a GFileInfo. When completed,
callback will be called with a GAsyncResult which can be used to
finish the operation with g_file_output_stream_query_info_finish().
g_file_output_stream_query_info_finish
Finalizes the asynchronous query started by g_file_output_stream_query_info_async().
Methods inherited from GOutputStream (31)
Please see GOutputStream for a full list of methods.
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.
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 GioFileOutputStreamClass {
GOutputStreamClass parent_class;
goffset (* tell) (
GFileOutputStream* stream
);
gboolean (* can_seek) (
GFileOutputStream* stream
);
gboolean (* seek) (
GFileOutputStream* stream,
goffset offset,
GSeekType type,
GCancellable* cancellable,
GError** error
);
gboolean (* can_truncate) (
GFileOutputStream* stream
);
gboolean (* truncate_fn) (
GFileOutputStream* stream,
goffset size,
GCancellable* cancellable,
GError** error
);
GFileInfo* (* query_info) (
GFileOutputStream* stream,
const char* attributes,
GCancellable* cancellable,
GError** error
);
void (* query_info_async) (
GFileOutputStream* stream,
const char* attributes,
int io_priority,
GCancellable* cancellable,
GAsyncReadyCallback callback,
gpointer user_data
);
GFileInfo* (* query_info_finish) (
GFileOutputStream* stream,
GAsyncResult* result,
GError** error
);
char* (* get_etag) (
GFileOutputStream* stream
);
void (* _g_reserved1) (
void
);
void (* _g_reserved2) (
void
);
void (* _g_reserved3) (
void
);
void (* _g_reserved4) (
void
);
void (* _g_reserved5) (
void
);
}Class members
parent_class: GOutputStreamClass- No description available.
tell: goffset (* tell) ( GFileOutputStream* stream )- No description available.
can_seek: gboolean (* can_seek) ( GFileOutputStream* stream )- No description available.
seek: gboolean (* seek) ( GFileOutputStream* stream, goffset offset, GSeekType type, GCancellable* cancellable, GError** error )- No description available.
can_truncate: gboolean (* can_truncate) ( GFileOutputStream* stream )- No description available.
truncate_fn: gboolean (* truncate_fn) ( GFileOutputStream* stream, goffset size, GCancellable* cancellable, GError** error )- No description available.
query_info: GFileInfo* (* query_info) ( GFileOutputStream* stream, const char* attributes, GCancellable* cancellable, GError** error )- No description available.
query_info_async: void (* query_info_async) ( GFileOutputStream* stream, const char* attributes, int io_priority, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer user_data )- No description available.
query_info_finish: GFileInfo* (* query_info_finish) ( GFileOutputStream* stream, GAsyncResult* result, GError** error )- No description available.
get_etag: char* (* get_etag) ( GFileOutputStream* stream )- No 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.
Virtual methods
Gio.FileOutputStreamClass.get_etag
Gets the entity tag for the file when it has been written. This must be called after the stream has been written and closed, as the etag can change while writing.
Gio.FileOutputStreamClass.query_info
Queries a file output stream for the given attributes.
This function blocks while querying the stream. For the asynchronous
version of this function, see g_file_output_stream_query_info_async().
While the stream is blocked, the stream will set the pending flag
internally, and any other operations on the stream will fail with
G_IO_ERROR_PENDING.
Gio.FileOutputStreamClass.query_info_async
Asynchronously queries the stream for a GFileInfo. When completed,
callback will be called with a GAsyncResult which can be used to
finish the operation with g_file_output_stream_query_info_finish().
Gio.FileOutputStreamClass.query_info_finish
Finalizes the asynchronous query started by g_file_output_stream_query_info_async().