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use gio_sys;
use glib;
use glib::object::IsA;
use glib::translate::*;
use glib_sys;
use gobject_sys;
use std::boxed::Box as Box_;
use std::fmt;
use std::pin::Pin;
use std::ptr;
use Cancellable;
use FileInfo;
use InputStream;
use Seekable;
glib_wrapper! {
pub struct FileInputStream(Object<gio_sys::GFileInputStream, gio_sys::GFileInputStreamClass, FileInputStreamClass>) @extends InputStream, @implements Seekable;
match fn {
get_type => || gio_sys::g_file_input_stream_get_type(),
}
}
pub const NONE_FILE_INPUT_STREAM: Option<&FileInputStream> = None;
pub trait FileInputStreamExt: 'static {
fn query_info<P: IsA<Cancellable>>(
&self,
attributes: &str,
cancellable: Option<&P>,
) -> Result<FileInfo, glib::Error>;
fn query_info_async<
P: IsA<Cancellable>,
Q: FnOnce(Result<FileInfo, glib::Error>) + Send + 'static,
>(
&self,
attributes: &str,
io_priority: glib::Priority,
cancellable: Option<&P>,
callback: Q,
);
fn query_info_async_future(
&self,
attributes: &str,
io_priority: glib::Priority,
) -> Pin<Box_<dyn std::future::Future<Output = Result<FileInfo, glib::Error>> + 'static>>;
}
impl<O: IsA<FileInputStream>> FileInputStreamExt for O {
fn query_info<P: IsA<Cancellable>>(
&self,
attributes: &str,
cancellable: Option<&P>,
) -> Result<FileInfo, glib::Error> {
unsafe {
let mut error = ptr::null_mut();
let ret = gio_sys::g_file_input_stream_query_info(
self.as_ref().to_glib_none().0,
attributes.to_glib_none().0,
cancellable.map(|p| p.as_ref()).to_glib_none().0,
&mut error,
);
if error.is_null() {
Ok(from_glib_full(ret))
} else {
Err(from_glib_full(error))
}
}
}
fn query_info_async<
P: IsA<Cancellable>,
Q: FnOnce(Result<FileInfo, glib::Error>) + Send + 'static,
>(
&self,
attributes: &str,
io_priority: glib::Priority,
cancellable: Option<&P>,
callback: Q,
) {
let user_data: Box_<Q> = Box_::new(callback);
unsafe extern "C" fn query_info_async_trampoline<
Q: FnOnce(Result<FileInfo, glib::Error>) + Send + 'static,
>(
_source_object: *mut gobject_sys::GObject,
res: *mut gio_sys::GAsyncResult,
user_data: glib_sys::gpointer,
) {
let mut error = ptr::null_mut();
let ret = gio_sys::g_file_input_stream_query_info_finish(
_source_object as *mut _,
res,
&mut error,
);
let result = if error.is_null() {
Ok(from_glib_full(ret))
} else {
Err(from_glib_full(error))
};
let callback: Box_<Q> = Box_::from_raw(user_data as *mut _);
callback(result);
}
let callback = query_info_async_trampoline::<Q>;
unsafe {
gio_sys::g_file_input_stream_query_info_async(
self.as_ref().to_glib_none().0,
attributes.to_glib_none().0,
io_priority.to_glib(),
cancellable.map(|p| p.as_ref()).to_glib_none().0,
Some(callback),
Box_::into_raw(user_data) as *mut _,
);
}
}
fn query_info_async_future(
&self,
attributes: &str,
io_priority: glib::Priority,
) -> Pin<Box_<dyn std::future::Future<Output = Result<FileInfo, glib::Error>> + 'static>> {
let attributes = String::from(attributes);
Box_::pin(crate::GioFuture::new(self, move |obj, send| {
let cancellable = Cancellable::new();
obj.query_info_async(&attributes, io_priority, Some(&cancellable), move |res| {
send.resolve(res);
});
cancellable
}))
}
}
impl fmt::Display for FileInputStream {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "FileInputStream")
}
}