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use anyhow::*;
use evdev_rs::Device;
use std::path::PathBuf;
#[derive(Debug, Clone)]
pub struct DeviceInfo {
pub name: String,
pub path: PathBuf,
}
impl DeviceInfo {
pub fn with_path(path: PathBuf) -> Result<Self> {
let f = std::fs::File::open(&path).context(format!("opening {}", path.display()))?;
let mut input = Device::new().ok_or_else(|| anyhow!("failed to make new Device"))?;
input
.set_fd(f)
.context(format!("assigning fd for {} to Device", path.display()))?;
Ok(Self {
name: input.name().unwrap_or("").to_string(),
path,
})
}
pub fn with_name(name: &str) -> Result<Self> {
let devices = Self::obtain_device_list()?;
for item in devices {
if item.name == name {
return Ok(item);
}
}
bail!("No device found with name `{}`", name);
}
fn obtain_device_list() -> Result<Vec<DeviceInfo>> {
let mut devices = vec![];
for entry in std::fs::read_dir("/dev/input")? {
let entry = entry?;
if !entry
.file_name()
.to_str()
.unwrap_or("")
.starts_with("event")
{
continue;
}
let path = entry.path();
if path.is_dir() {
continue;
}
match DeviceInfo::with_path(path) {
Ok(item) => devices.push(item),
Err(err) => log::error!("{}", err),
}
}
devices.sort_by(|a, b| a.name.cmp(&b.name));
Ok(devices)
}
}
pub fn list_devices() -> Result<()> {
let devices = DeviceInfo::obtain_device_list()?;
for item in &devices {
println!("Name: {}", item.name);
println!("Path: {}", item.path.display());
println!();
}
Ok(())
}
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