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// Take a look at the license at the top of the repository in the LICENSE file.
use crate::ComponentExt;
use std::collections::HashMap;
use std::fs::{metadata, read_dir, File};
use std::io::Read;
use std::path::{Path, PathBuf};
#[doc = include_str!("../../md_doc/component.md")]
pub struct Component {
temperature: f32,
max: f32,
critical: Option<f32>,
label: String,
input_file: PathBuf,
}
fn get_file_line(file: &Path, capacity: usize) -> Option<String> {
let mut reader = String::with_capacity(capacity);
if let Ok(mut f) = File::open(file) {
if f.read_to_string(&mut reader).is_ok() {
Some(reader)
} else {
None
}
} else {
None
}
}
fn is_file<T: AsRef<Path>>(path: T) -> bool {
metadata(path).ok().map(|m| m.is_file()).unwrap_or(false)
}
fn append_files(components: &mut Vec<Component>, folder: &Path) {
let mut matchings: HashMap<u32, Vec<String>> = HashMap::with_capacity(10);
if let Ok(dir) = read_dir(folder) {
for entry in dir.flatten() {
let entry = entry.path();
if entry.is_dir()
|| !entry
.file_name()
.and_then(|x| x.to_str())
.unwrap_or("")
.starts_with("temp")
{
continue;
}
if let Some(entry) = entry.file_name() {
if let Some(entry) = entry.to_str() {
let mut parts = entry.split('_');
if let Some(Some(id)) = parts.next().map(|s| s[4..].parse::<u32>().ok()) {
matchings
.entry(id)
.or_insert_with(|| Vec::with_capacity(5))
.push(
parts
.next()
.map(|s| format!("_{}", s))
.unwrap_or_else(String::new),
);
}
}
}
}
for (key, val) in &matchings {
let mut found_input = None;
let mut found_label = None;
for (pos, v) in val.iter().enumerate() {
match v.as_str() {
// raspberry has empty string for temperature input
"_input" | "" => {
found_input = Some(pos);
}
"_label" => {
found_label = Some(pos);
}
_ => {}
}
}
if let (Some(_), Some(found_input)) = (found_label, found_input) {
let mut p_label = folder.to_path_buf();
let mut p_input = folder.to_path_buf();
let mut p_crit = folder.to_path_buf();
let mut p_max = folder.to_path_buf();
p_label.push(&format!("temp{}_label", key));
p_input.push(&format!("temp{}{}", key, val[found_input]));
p_max.push(&format!("temp{}_max", key));
p_crit.push(&format!("temp{}_crit", key));
if is_file(&p_input) {
let label = get_file_line(p_label.as_path(), 10)
.unwrap_or_else(|| format!("Component {}", key)) // needed for raspberry pi
.replace('\n', "");
let max = get_file_line(p_max.as_path(), 10).map(|max| {
max.replace('\n', "").parse::<f32>().unwrap_or(100_000f32) / 1000f32
});
let crit = get_file_line(p_crit.as_path(), 10).map(|crit| {
crit.replace('\n', "").parse::<f32>().unwrap_or(100_000f32) / 1000f32
});
components.push(Component::new(label, p_input.as_path(), max, crit));
}
}
}
}
}
impl Component {
/// Creates a new component with the given information.
pub(crate) fn new(
label: String,
input_path: &Path,
max: Option<f32>,
critical: Option<f32>,
) -> Component {
let mut c = Component {
temperature: 0f32,
label,
input_file: input_path.to_path_buf(),
max: max.unwrap_or(0.0),
critical,
};
c.refresh();
c
}
}
impl ComponentExt for Component {
fn temperature(&self) -> f32 {
self.temperature
}
fn max(&self) -> f32 {
self.max
}
fn critical(&self) -> Option<f32> {
self.critical
}
fn label(&self) -> &str {
&self.label
}
fn refresh(&mut self) {
if let Some(content) = get_file_line(self.input_file.as_path(), 10) {
self.temperature = content
.replace('\n', "")
.parse::<f32>()
.unwrap_or(100_000f32)
/ 1000f32;
if self.temperature > self.max {
self.max = self.temperature;
}
}
}
}
pub(crate) fn get_components() -> Vec<Component> {
let mut components = Vec::with_capacity(10);
if let Ok(dir) = read_dir(&Path::new("/sys/class/hwmon/")) {
for entry in dir.flatten() {
let entry = entry.path();
if !entry.is_dir()
|| !entry
.file_name()
.and_then(|x| x.to_str())
.unwrap_or("")
.starts_with("hwmon")
{
continue;
}
append_files(&mut components, &entry);
}
components.sort_by(|c1, c2| c1.label.to_lowercase().cmp(&c2.label.to_lowercase()));
}
if is_file("/sys/class/thermal/thermal_zone0/temp") {
// Specfic to raspberry pi.
components.push(Component::new(
"CPU".to_owned(),
Path::new("/sys/class/thermal/thermal_zone0/temp"),
None,
None,
));
}
components
}
|
