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