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mirror of https://github.com/wez/wezterm.git synced 2024-11-27 12:23:46 +03:00

lua: add wezterm.battery_info() function

Queries the system battery information and returns an array of
battery information.

Each element is a lua table with the following entries:

* state_of_charge: expressed as percents
* vendor: the battery manufacturer
* model: the battery model
* serial: the battery serial number
* time_to_full: how long until the battery is full
* time_to_empty: how long until the battery is empty
* state: "Charging", "Discharging", "Empty", "Full", "Unknown"

I haven't run this on a system with a battery yet, so I'm holding
off from showing an example until I've got a work one.

refs: https://github.com/wez/wezterm/issues/500
This commit is contained in:
Wez Furlong 2021-03-06 14:25:36 -08:00
parent 98cb3a8191
commit e992ac7ad0
3 changed files with 97 additions and 0 deletions

49
Cargo.lock generated
View File

@ -346,6 +346,23 @@ checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
name = "base91"
version = "0.1.0"
[[package]]
name = "battery"
version = "0.7.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b4b624268937c0e0a3edb7c27843f9e547c320d730c610d3b8e6e8e95b2026e4"
dependencies = [
"cfg-if 1.0.0",
"core-foundation 0.7.0",
"lazycell",
"libc",
"mach",
"nix 0.19.1",
"num-traits 0.2.14",
"uom",
"winapi 0.3.9",
]
[[package]]
name = "bintree"
version = "0.1.0"
@ -673,6 +690,7 @@ name = "config"
version = "0.1.0"
dependencies = [
"anyhow",
"battery",
"bitflags",
"bstr 0.2.15",
"chrono",
@ -1937,6 +1955,15 @@ dependencies = [
"cc",
]
[[package]]
name = "mach"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b823e83b2affd8f40a9ee8c29dbc56404c1e34cd2710921f2801e2cf29527afa"
dependencies = [
"libc",
]
[[package]]
name = "malloc_buf"
version = "0.0.6"
@ -2211,6 +2238,18 @@ dependencies = [
"libc",
]
[[package]]
name = "nix"
version = "0.19.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b2ccba0cfe4fdf15982d1674c69b1fd80bad427d293849982668dfe454bd61f2"
dependencies = [
"bitflags",
"cc",
"cfg-if 1.0.0",
"libc",
]
[[package]]
name = "nix"
version = "0.20.0"
@ -4007,6 +4046,16 @@ version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
[[package]]
name = "uom"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e76503e636584f1e10b9b3b9498538279561adcef5412927ba00c2b32c4ce5ed"
dependencies = [
"num-traits 0.2.14",
"typenum",
]
[[package]]
name = "url"
version = "2.2.1"

View File

@ -15,6 +15,7 @@ pretty_env_logger = "0.4"
[dependencies]
anyhow = "1.0"
battery = "0.7"
bitflags = "1.0"
bstr = "0.2"
chrono = {version="0.4", features=["unstable-locales"]}

View File

@ -134,6 +134,7 @@ pub fn make_lua_context(config_dir: &Path) -> anyhow::Result<Lua> {
wezterm_mod.set("sleep_ms", lua.create_async_function(sleep_ms)?)?;
wezterm_mod.set("format", lua.create_function(format)?)?;
wezterm_mod.set("strftime", lua.create_function(strftime)?)?;
wezterm_mod.set("battery_info", lua.create_function(battery_info)?)?;
package.set("path", path_array.join(";"))?;
@ -254,6 +255,52 @@ fn format<'lua>(_: &'lua Lua, items: Vec<FormatItem>) -> mlua::Result<String> {
String::from_utf8(target.target).map_err(|e| mlua::Error::external(e))
}
#[derive(Serialize, Deserialize, Debug)]
struct BatteryInfo {
state_of_charge: f32,
vendor: String,
model: String,
state: String,
serial: String,
time_to_full: Option<f32>,
time_to_empty: Option<f32>,
}
impl_lua_conversion!(BatteryInfo);
fn opt_string(s: Option<&str>) -> String {
match s {
Some(s) => s,
None => "unknown",
}
.to_string()
}
fn battery_info<'lua>(_: &'lua Lua, _: ()) -> mlua::Result<Vec<BatteryInfo>> {
use battery::{Manager, State};
let manager = Manager::new().map_err(|e| mlua::Error::external(e))?;
let mut result = vec![];
for b in manager.batteries().map_err(|e| mlua::Error::external(e))? {
let bat = b.map_err(|e| mlua::Error::external(e))?;
result.push(BatteryInfo {
state_of_charge: bat.state_of_charge().value,
vendor: opt_string(bat.vendor()),
model: opt_string(bat.model()),
serial: opt_string(bat.serial_number()),
state: match bat.state() {
State::Charging => "charging",
State::Discharging => "Discharging",
State::Empty => "Empty",
State::Full => "Full",
State::Unknown | _ => "Unknown",
}
.to_string(),
time_to_full: bat.time_to_full().map(|q| q.value),
time_to_empty: bat.time_to_empty().map(|q| q.value),
})
}
Ok(result)
}
async fn sleep_ms<'lua>(_: &'lua Lua, milliseconds: u64) -> mlua::Result<()> {
let duration = std::time::Duration::from_millis(milliseconds);
smol::Timer::after(duration).await;