1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
use crate::AsyncResult;
use crate::Cancellable;
use crate::FileInfo;
use crate::InputStream;
use crate::Seekable;
use glib::object::IsA;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::pin::Pin;
use std::ptr;
glib::wrapper! {
#[doc(alias = "GFileInputStream")]
pub struct FileInputStream(Object<ffi::GFileInputStream, ffi::GFileInputStreamClass>) @extends InputStream, @implements Seekable;
match fn {
type_ => || ffi::g_file_input_stream_get_type(),
}
}
impl FileInputStream {
pub const NONE: Option<&'static FileInputStream> = None;
}
pub trait FileInputStreamExt: 'static {
#[doc(alias = "g_file_input_stream_query_info")]
fn query_info(
&self,
attributes: &str,
cancellable: Option<&impl IsA<Cancellable>>,
) -> Result<FileInfo, glib::Error>;
#[doc(alias = "g_file_input_stream_query_info_async")]
fn query_info_async<P: FnOnce(Result<FileInfo, glib::Error>) + 'static>(
&self,
attributes: &str,
io_priority: glib::Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P,
);
fn query_info_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(
&self,
attributes: &str,
cancellable: Option<&impl IsA<Cancellable>>,
) -> Result<FileInfo, glib::Error> {
unsafe {
let mut error = ptr::null_mut();
let ret = ffi::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: FnOnce(Result<FileInfo, glib::Error>) + 'static>(
&self,
attributes: &str,
io_priority: glib::Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P,
) {
let main_context = glib::MainContext::ref_thread_default();
let is_main_context_owner = main_context.is_owner();
let has_acquired_main_context = (!is_main_context_owner)
.then(|| main_context.acquire().ok())
.flatten();
assert!(
is_main_context_owner || has_acquired_main_context.is_some(),
"Async operations only allowed if the thread is owning the MainContext"
);
let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
Box_::new(glib::thread_guard::ThreadGuard::new(callback));
unsafe extern "C" fn query_info_async_trampoline<
P: FnOnce(Result<FileInfo, glib::Error>) + 'static,
>(
_source_object: *mut glib::gobject_ffi::GObject,
res: *mut crate::ffi::GAsyncResult,
user_data: glib::ffi::gpointer,
) {
let mut error = ptr::null_mut();
let ret = ffi::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_<glib::thread_guard::ThreadGuard<P>> =
Box_::from_raw(user_data as *mut _);
let callback: P = callback.into_inner();
callback(result);
}
let callback = query_info_async_trampoline::<P>;
unsafe {
ffi::g_file_input_stream_query_info_async(
self.as_ref().to_glib_none().0,
attributes.to_glib_none().0,
io_priority.into_glib(),
cancellable.map(|p| p.as_ref()).to_glib_none().0,
Some(callback),
Box_::into_raw(user_data) as *mut _,
);
}
}
fn query_info_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, cancellable, send| {
obj.query_info_async(&attributes, io_priority, Some(cancellable), move |res| {
send.resolve(res);
});
},
))
}
}
impl fmt::Display for FileInputStream {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str("FileInputStream")
}
}
