feat(args): add --section argument for tui

systeroid-tui/src/app.rs

@@ -43,13 +43,13 @@ pub struct App<'a> {
 
 impl<'a> App<'a> {
     /// Constructs a new instance.
-    pub fn new(sysctl: &'a mut Sysctl, search_query: Option<String>) -> Self {
+    pub fn new(sysctl: &'a mut Sysctl) -> Self {
         let mut app = Self {
             running: true,
-            search_mode: search_query.is_some(),
-            input: search_query,
+            input: None,
             input_time: None,
             input_cursor: 0,
+            search_mode: false,
             docs_scroll_amount: 0,
             options: None,
             parameter_list: SelectableList::default(),
@@ -66,11 +66,6 @@ impl<'a> App<'a> {
             sysctl,
         };
         app.parameter_list.items = app.sysctl.parameters.clone();
-        if app.search_mode {
-            app.search();
-            app.input = None;
-            app.search_mode = false;
-        }
         #[cfg(feature = "clipboard")]
         {
             app.clipboard = match DisplayServer::select().try_context() {
@@ -93,7 +88,7 @@ impl<'a> App<'a> {
     }
 
     /// Performs a search operation in the kernel parameter list.
-    fn search(&mut self) {
+    pub fn search(&mut self) {
         let section = self
             .section_list
             .selected()

systeroid-tui/src/args.rs

@@ -1,5 +1,6 @@
 use getopts::Options;
 use std::path::PathBuf;
+use systeroid_core::sysctl::section::Section;
 
 /// Help message for the arguments.
 const HELP_MESSAGE: &str = r#"
@@ -18,6 +19,8 @@ pub struct Args {
     pub tick_rate: u64,
     /// Path of the Linux kernel documentation.
     pub kernel_docs: Option<PathBuf>,
+    /// Sysctl section to filter.
+    pub section: Option<Section>,
     /// Query to search on startup.
     pub search_query: Option<String>,
     /// Do not parse/show Linux kernel documentation.
@@ -40,6 +43,7 @@ impl Args {
             "set the path of the kernel documentation",
             "<path>",
         );
+        opts.optopt("s", "section", "set the section to filter", "<section>");
         opts.optopt("q", "query", "set the query to search", "<query>");
         opts.optflag("n", "no-docs", "do not show the kernel documentation");
         opts.optflag("h", "help", "display this help and exit");
@@ -73,6 +77,7 @@ impl Args {
                     .ok()?
                     .unwrap_or(250),
                 kernel_docs: matches.opt_str("D").map(PathBuf::from),
+                section: matches.opt_str("s").map(Section::from),
                 search_query: matches.opt_str("q"),
                 no_docs: matches.opt_present("n"),
             })

systeroid-tui/src/lib.rs

@@ -48,7 +48,22 @@ pub fn run<Output: Write>(args: Args, output: Output) -> Result<()> {
     if !args.no_docs {
         sysctl.update_docs_from_cache(args.kernel_docs.as_ref(), &Cache::init()?)?;
     }
-    let mut app = App::new(&mut sysctl, args.search_query);
+    let mut app = App::new(&mut sysctl);
+    if let Some(section) = args.section {
+        app.section_list.state.select(Some(
+            app.section_list
+                .items
+                .iter()
+                .position(|r| r == &section.to_string())
+                .unwrap_or(0),
+        ));
+        app.search();
+    }
+    if args.search_query.is_some() {
+        app.input = args.search_query;
+        app.search();
+        app.input = None;
+    }
     while app.running {
         terminal.draw(|frame| ui::render(frame, &mut app))?;
         match event_handler.next()? {