gio 0.8.0

Rust bindings for the Gio library
Documentation 
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

// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

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")
    }
}