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
|
extern crate dbus;
use dbus::{Connection, BusType, stdintf, arg};
use std::collections::HashMap;
fn print_refarg(value: &arg::RefArg) {
// We don't know what type the value is. We'll try a few and fall back to
// debug printing if the value is more complex than that.
if let Some(s) = value.as_str() { println!("{}", s); }
else if let Some(i) = value.as_i64() { println!("{}", i); }
else { println!("{:?}", value); }
}
fn main() {
// Connect to server and create a ConnPath. A ConnPath implements several interfaces,
// in this case we'll use OrgFreedesktopDBusProperties, which allows us to call "get".
let c = Connection::get_private(BusType::Session).unwrap();
let p = c.with_path("org.mpris.MediaPlayer2.rhythmbox", "/org/mpris/MediaPlayer2", 5000);
use stdintf::org_freedesktop_dbus::Properties;
// The Metadata property is a Dict<String, Variant>.
// Option 1: we can get the dict straight into a hashmap, like this:
let metadata: HashMap<String, arg::Variant<Box<arg::RefArg>>> = p.get("org.mpris.MediaPlayer2.Player", "Metadata").unwrap();
println!("Option 1:");
// We now iterate over the hashmap.
for (key, value) in metadata.iter() {
print!(" {}: ", key);
print_refarg(&value);
}
// Option 2: we can get the entire dict as a RefArg and get the values out by iterating over it.
let metadata: Box<arg::RefArg> = p.get("org.mpris.MediaPlayer2.Player", "Metadata").unwrap();
// When using "as_iter()" for a dict, we'll get one key, it's value, next key, it's value, etc.
let mut iter = metadata.as_iter().unwrap();
println!("Option 2:");
while let Some(key) = iter.next() {
// Printing the key is easy, since we know it's a String.
print!(" {}: ", key.as_str().unwrap());
let value = iter.next().unwrap();
print_refarg(&value);
}
}
|
