Trait gio::prelude::FileInputStreamExt
source · pub trait FileInputStreamExt: 'static {
// Required methods
fn query_info(
&self,
attributes: &str,
cancellable: Option<&impl IsA<Cancellable>>
) -> Result<FileInfo, Error>;
fn query_info_async<P: FnOnce(Result<FileInfo, Error>) + 'static>(
&self,
attributes: &str,
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P
);
fn query_info_future(
&self,
attributes: &str,
io_priority: Priority
) -> Pin<Box_<dyn Future<Output = Result<FileInfo, Error>> + 'static>>;
}
Expand description
Required Methods§
sourcefn query_info(
&self,
attributes: &str,
cancellable: Option<&impl IsA<Cancellable>>
) -> Result<FileInfo, Error>
fn query_info( &self, attributes: &str, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<FileInfo, Error>
Queries a file input stream the given attributes
. This function blocks
while querying the stream. For the asynchronous (non-blocking) version
of this function, see 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 IOErrorEnum::Pending
.
attributes
a file attribute query string.
cancellable
optional Cancellable
object, None
to ignore.
Returns
sourcefn query_info_async<P: FnOnce(Result<FileInfo, Error>) + 'static>(
&self,
attributes: &str,
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P
)
fn query_info_async<P: FnOnce(Result<FileInfo, Error>) + 'static>( &self, attributes: &str, io_priority: Priority, cancellable: Option<&impl IsA<Cancellable>>, callback: P )
Queries the stream information asynchronously.
When the operation is finished callback
will be called.
You can then call g_file_input_stream_query_info_finish()
to get the result of the operation.
For the synchronous version of this function,
see query_info()
.
If cancellable
is not None
, then the operation can be cancelled by
triggering the cancellable object from another thread. If the operation
was cancelled, the error IOErrorEnum::Cancelled
will be set
attributes
a file attribute query string.
io_priority
the [I/O priority][io-priority] of the request
cancellable
optional Cancellable
object, None
to ignore.
callback
callback to call when the request is satisfied