feat: add shell completions

Auto-generated with clap.

Cargo.lock

@@ -476,6 +476,15 @@ dependencies = [
  "strsim 0.11.0",
 ]
 
+[[package]]
+name = "clap_complete"
+version = "4.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b4be9c4c4b1f30b78d8a750e0822b6a6102d97e62061c583a6c1dea2dfb33ae"
+dependencies = [
+ "clap",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.5.18"
@@ -1722,6 +1731,7 @@ dependencies = [
  "cfg-if",
  "chrono",
  "clap",
+ "clap_complete",
  "color-eyre",
  "ctrlc",
  "dirs",

Cargo.toml

@@ -180,3 +180,9 @@ schemars = { version = "0.8.21", optional = true }
 # -- PATCH --
 # temp fix for tracing-appender/time
 time = "0.3.37"
+
+[build-dependencies]
+clap = { version = "4.5.9", features = ["derive"] }
+clap_complete = "4.5.2"
+serde = { version = "1.0.204", features = ["derive"] }
+serde_json = "1.0.134"

build.rs

@@ -0,0 +1,53 @@
+// Importing from Ironbar modules brings in lots of things not used by the build script
+// we can just globally suppress those.
+#![allow(unused, dead_code)]
+
+#[path = "src/cli.rs"]
+mod cli;
+
+#[path = "src/error.rs"]
+mod error;
+
+#[path = "src/ipc"]
+mod ipc {
+    #[path = "commands.rs"]
+    mod commands;
+
+    #[path = "responses.rs"]
+    mod responses;
+
+    pub use commands::Command;
+    pub use responses::Response;
+}
+
+use clap::Command;
+use clap::CommandFactory;
+use clap_complete::generate_to;
+use clap_complete::Shell::{Bash, Fish, Zsh};
+use cli::Args;
+use std::fs;
+use std::path::PathBuf;
+
+const NAME: &str = "ironbar";
+
+fn generate_shell_completions(mut cmd: Command) -> std::io::Result<()> {
+    const MANIFEST_DIR: &str = env!("CARGO_MANIFEST_DIR");
+    let comp_dir = PathBuf::from(MANIFEST_DIR).join("target/completions");
+
+    fs::create_dir_all(&comp_dir)?;
+
+    for shell in [Bash, Fish, Zsh] {
+        generate_to(shell, &mut cmd, NAME, &comp_dir)?;
+    }
+
+    Ok(())
+}
+
+fn main() -> std::io::Result<()> {
+    let mut cmd = Args::command();
+    cmd.set_bin_name(NAME);
+
+    generate_shell_completions(cmd)?;
+
+    Ok(())
+}

docs/Compiling.md

@@ -117,6 +117,26 @@ cargo build --release --no-default-features \
 | **Other**           |                                                                                   |
 | schema              | Enables JSON schema support and the CLI `--print-schema` flag.                    |
 
+## Shell completions
+
+Compiling Ironbar will produce shell completions for bash, zsh and fish; these can be found in `target/completions`.
+
+You can install these as follows:
+
+Bash: 
+```shell
+install -Dm644 completions/ironbar.bash /usr/share/bash-completion/completions/ironbar
+```
+
+Zsh:
+```shell
+install -Dm644 completions/_ironbar /usr/share/zsh/site-functions/_ironbar
+```
+
+Fish:
+```shell
+install -Dm644 completions/ironbar.fish /usr/share/fish/vendor_completions.d/ironbar.fish
+```
 
 ## Speeding up compiling
 

nix/default.nix

@@ -20,6 +20,7 @@
   luajit,
   luajitPackages,
   pkg-config,
+  installShellFiles,
   adwaita-icon-theme,
   hicolor-icon-theme,
   rustPlatform,
@@ -45,6 +46,7 @@
         pkg-config
         wrapGAppsHook
         gobject-introspection
+        installShellFiles
     ];
 
     buildInputs = [
@@ -89,6 +91,13 @@
       )
     '';
 
+    postInstall = ''
+      installShellCompletion --cmd ironbar \
+        --bash target/completions/ironbar.bash \
+        --fish target/completions/ironbar.fish \
+        --zsh target/completions/_ironbar
+    '';
+
     passthru = {
       updateScript = gnome.updateScript {
         packageName = pname;

src/cli.rs

@@ -1,6 +1,5 @@
 use crate::error::ExitCode;
-use crate::ipc::commands::Command;
+use crate::ipc::{Command, Response};
-use crate::ipc::responses::Response;
 use clap::{Parser, ValueEnum};
 use serde::{Deserialize, Serialize};
 use std::process::exit;