1#[cfg(feature = "futures")]
6use futures::future;
7use gio_sys;
8use glib;
9use glib::object::Cast;
10use glib::object::IsA;
11use glib::signal::connect_raw;
12use glib::signal::SignalHandlerId;
13use glib::translate::*;
14use glib::StaticType;
15use glib::ToValue;
16use glib_sys;
17use gobject_sys;
18use std::boxed::Box as Box_;
19use std::fmt;
20use std::mem;
21use std::mem::transmute;
22use std::ptr;
23use Cancellable;
24use Error;
25use FilterInputStream;
26use InputStream;
27use Seekable;
28
29glib_wrapper! {
30 pub struct BufferedInputStream(Object<gio_sys::GBufferedInputStream, gio_sys::GBufferedInputStreamClass, BufferedInputStreamClass>) @extends FilterInputStream, InputStream, @implements Seekable;
31
32 match fn {
33 get_type => || gio_sys::g_buffered_input_stream_get_type(),
34 }
35}
36
37impl BufferedInputStream {
38 pub fn new<P: IsA<InputStream>>(base_stream: &P) -> BufferedInputStream {
39 unsafe {
40 InputStream::from_glib_full(gio_sys::g_buffered_input_stream_new(
41 base_stream.as_ref().to_glib_none().0,
42 ))
43 .unsafe_cast()
44 }
45 }
46
47 pub fn new_sized<P: IsA<InputStream>>(base_stream: &P, size: usize) -> BufferedInputStream {
48 unsafe {
49 InputStream::from_glib_full(gio_sys::g_buffered_input_stream_new_sized(
50 base_stream.as_ref().to_glib_none().0,
51 size,
52 ))
53 .unsafe_cast()
54 }
55 }
56}
57
58pub struct BufferedInputStreamBuilder {
59 buffer_size: Option<u32>,
60 base_stream: Option<InputStream>,
61 close_base_stream: Option<bool>,
62}
63
64impl BufferedInputStreamBuilder {
65 pub fn new() -> Self {
66 Self {
67 buffer_size: None,
68 base_stream: None,
69 close_base_stream: None,
70 }
71 }
72
73 pub fn build(self) -> BufferedInputStream {
74 let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
75 if let Some(ref buffer_size) = self.buffer_size {
76 properties.push(("buffer-size", buffer_size));
77 }
78 if let Some(ref base_stream) = self.base_stream {
79 properties.push(("base-stream", base_stream));
80 }
81 if let Some(ref close_base_stream) = self.close_base_stream {
82 properties.push(("close-base-stream", close_base_stream));
83 }
84 glib::Object::new(BufferedInputStream::static_type(), &properties)
85 .expect("object new")
86 .downcast()
87 .expect("downcast")
88 }
89
90 pub fn buffer_size(mut self, buffer_size: u32) -> Self {
91 self.buffer_size = Some(buffer_size);
92 self
93 }
94
95 pub fn base_stream(mut self, base_stream: &InputStream) -> Self {
96 self.base_stream = Some(base_stream.clone());
97 self
98 }
99
100 pub fn close_base_stream(mut self, close_base_stream: bool) -> Self {
101 self.close_base_stream = Some(close_base_stream);
102 self
103 }
104}
105
106pub const NONE_BUFFERED_INPUT_STREAM: Option<&BufferedInputStream> = None;
107
108pub trait BufferedInputStreamExt: 'static {
109 fn fill<P: IsA<Cancellable>>(
110 &self,
111 count: isize,
112 cancellable: Option<&P>,
113 ) -> Result<isize, Error>;
114
115 fn fill_async<P: IsA<Cancellable>, Q: FnOnce(Result<isize, Error>) + Send + 'static>(
116 &self,
117 count: isize,
118 io_priority: glib::Priority,
119 cancellable: Option<&P>,
120 callback: Q,
121 );
122
123 #[cfg(feature = "futures")]
124 fn fill_async_future(
125 &self,
126 count: isize,
127 io_priority: glib::Priority,
128 ) -> Box_<dyn future::Future<Output = Result<isize, Error>> + std::marker::Unpin>;
129
130 fn get_available(&self) -> usize;
131
132 fn get_buffer_size(&self) -> usize;
133
134 fn peek_buffer(&self) -> Vec<u8>;
135
136 fn read_byte<P: IsA<Cancellable>>(&self, cancellable: Option<&P>) -> Result<i32, Error>;
137
138 fn set_buffer_size(&self, size: usize);
139
140 fn connect_property_buffer_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
141}
142
143impl<O: IsA<BufferedInputStream>> BufferedInputStreamExt for O {
144 fn fill<P: IsA<Cancellable>>(
145 &self,
146 count: isize,
147 cancellable: Option<&P>,
148 ) -> Result<isize, Error> {
149 unsafe {
150 let mut error = ptr::null_mut();
151 let ret = gio_sys::g_buffered_input_stream_fill(
152 self.as_ref().to_glib_none().0,
153 count,
154 cancellable.map(|p| p.as_ref()).to_glib_none().0,
155 &mut error,
156 );
157 if error.is_null() {
158 Ok(ret)
159 } else {
160 Err(from_glib_full(error))
161 }
162 }
163 }
164
165 fn fill_async<P: IsA<Cancellable>, Q: FnOnce(Result<isize, Error>) + Send + 'static>(
166 &self,
167 count: isize,
168 io_priority: glib::Priority,
169 cancellable: Option<&P>,
170 callback: Q,
171 ) {
172 let user_data: Box<Q> = Box::new(callback);
173 unsafe extern "C" fn fill_async_trampoline<
174 Q: FnOnce(Result<isize, Error>) + Send + 'static,
175 >(
176 _source_object: *mut gobject_sys::GObject,
177 res: *mut gio_sys::GAsyncResult,
178 user_data: glib_sys::gpointer,
179 ) {
180 let mut error = ptr::null_mut();
181 let ret = gio_sys::g_buffered_input_stream_fill_finish(
182 _source_object as *mut _,
183 res,
184 &mut error,
185 );
186 let result = if error.is_null() {
187 Ok(ret)
188 } else {
189 Err(from_glib_full(error))
190 };
191 let callback: Box<Q> = Box::from_raw(user_data as *mut _);
192 callback(result);
193 }
194 let callback = fill_async_trampoline::<Q>;
195 unsafe {
196 gio_sys::g_buffered_input_stream_fill_async(
197 self.as_ref().to_glib_none().0,
198 count,
199 io_priority.to_glib(),
200 cancellable.map(|p| p.as_ref()).to_glib_none().0,
201 Some(callback),
202 Box::into_raw(user_data) as *mut _,
203 );
204 }
205 }
206
207 #[cfg(feature = "futures")]
208 fn fill_async_future(
209 &self,
210 count: isize,
211 io_priority: glib::Priority,
212 ) -> Box_<dyn future::Future<Output = Result<isize, Error>> + std::marker::Unpin> {
213 use fragile::Fragile;
214 use GioFuture;
215
216 GioFuture::new(self, move |obj, send| {
217 let cancellable = Cancellable::new();
218 let send = Fragile::new(send);
219 obj.fill_async(count, io_priority, Some(&cancellable), move |res| {
220 let _ = send.into_inner().send(res);
221 });
222
223 cancellable
224 })
225 }
226
227 fn get_available(&self) -> usize {
228 unsafe { gio_sys::g_buffered_input_stream_get_available(self.as_ref().to_glib_none().0) }
229 }
230
231 fn get_buffer_size(&self) -> usize {
232 unsafe { gio_sys::g_buffered_input_stream_get_buffer_size(self.as_ref().to_glib_none().0) }
233 }
234
235 fn peek_buffer(&self) -> Vec<u8> {
236 unsafe {
237 let mut count = mem::uninitialized();
238 let ret = FromGlibContainer::from_glib_none_num(
239 gio_sys::g_buffered_input_stream_peek_buffer(
240 self.as_ref().to_glib_none().0,
241 &mut count,
242 ),
243 count as usize,
244 );
245 ret
246 }
247 }
248
249 fn read_byte<P: IsA<Cancellable>>(&self, cancellable: Option<&P>) -> Result<i32, Error> {
250 unsafe {
251 let mut error = ptr::null_mut();
252 let ret = gio_sys::g_buffered_input_stream_read_byte(
253 self.as_ref().to_glib_none().0,
254 cancellable.map(|p| p.as_ref()).to_glib_none().0,
255 &mut error,
256 );
257 if error.is_null() {
258 Ok(ret)
259 } else {
260 Err(from_glib_full(error))
261 }
262 }
263 }
264
265 fn set_buffer_size(&self, size: usize) {
266 unsafe {
267 gio_sys::g_buffered_input_stream_set_buffer_size(self.as_ref().to_glib_none().0, size);
268 }
269 }
270
271 fn connect_property_buffer_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
272 unsafe extern "C" fn notify_buffer_size_trampoline<P, F: Fn(&P) + 'static>(
273 this: *mut gio_sys::GBufferedInputStream,
274 _param_spec: glib_sys::gpointer,
275 f: glib_sys::gpointer,
276 ) where
277 P: IsA<BufferedInputStream>,
278 {
279 let f: &F = &*(f as *const F);
280 f(&BufferedInputStream::from_glib_borrow(this).unsafe_cast())
281 }
282 unsafe {
283 let f: Box_<F> = Box_::new(f);
284 connect_raw(
285 self.as_ptr() as *mut _,
286 b"notify::buffer-size\0".as_ptr() as *const _,
287 Some(transmute(notify_buffer_size_trampoline::<Self, F> as usize)),
288 Box_::into_raw(f),
289 )
290 }
291 }
292}
293
294impl fmt::Display for BufferedInputStream {
295 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
296 write!(f, "BufferedInputStream")
297 }
298}