bottom/build.rs

119 lines
3.8 KiB
Rust
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#[allow(dead_code)]
#[path = "src/options/args.rs"]
mod args;
use std::{
env, fs, io,
path::{Path, PathBuf},
};
use clap::Command;
use clap_complete::{generate_to, shells::Shell, Generator};
use clap_complete_fig::Fig;
use clap_complete_nushell::Nushell;
use crate::args::build_app;
fn create_dir(dir: &Path) -> io::Result<()> {
let res = fs::create_dir_all(dir);
match &res {
Ok(()) => {}
Err(err) => {
eprintln!("Failed to create a directory at location {dir:?}, encountered error {err:?}. Aborting...",);
}
}
res
}
fn generate_completions<G>(to_generate: G, cmd: &mut Command, out_dir: &Path) -> io::Result<PathBuf>
where
G: Generator,
{
generate_to(to_generate, cmd, "btm", out_dir)
}
fn btm_generate() -> io::Result<()> {
const ENV_KEY: &str = "BTM_GENERATE";
match env::var_os(ENV_KEY) {
Some(var) if !var.is_empty() => {
const COMPLETION_DIR: &str = "./target/tmp/bottom/completion/";
const MANPAGE_DIR: &str = "./target/tmp/bottom/manpage/";
let completion_out_dir = PathBuf::from(COMPLETION_DIR);
let manpage_out_dir = PathBuf::from(MANPAGE_DIR);
create_dir(&completion_out_dir)?;
create_dir(&manpage_out_dir)?;
// Generate completions
let mut app = build_app();
generate_completions(Shell::Bash, &mut app, &completion_out_dir)?;
generate_completions(Shell::Zsh, &mut app, &completion_out_dir)?;
generate_completions(Shell::Fish, &mut app, &completion_out_dir)?;
generate_completions(Shell::PowerShell, &mut app, &completion_out_dir)?;
generate_completions(Shell::Elvish, &mut app, &completion_out_dir)?;
generate_completions(Fig, &mut app, &completion_out_dir)?;
generate_completions(Nushell, &mut app, &completion_out_dir)?;
// Generate manpage
let app = app.name("btm");
let man = clap_mangen::Man::new(app);
let mut buffer: Vec<u8> = Default::default();
man.render(&mut buffer)?;
fs::write(manpage_out_dir.join("btm.1"), buffer)?;
}
_ => {}
}
println!("cargo:rerun-if-env-changed={ENV_KEY}");
Ok(())
}
fn extract_sha(sha: Option<&str>) -> Option<&str> {
sha.and_then(|sha: &str| sha.get(0..8))
}
fn output_nightly_version(version: &str, git_hash: &str) {
println!("cargo:rustc-env=NIGHTLY_VERSION={version}-nightly-{git_hash}");
}
fn nightly_version() {
const ENV_KEY: &str = "BTM_BUILD_RELEASE_CALLER";
match env::var_os(ENV_KEY) {
Some(var) if !var.is_empty() && var == "nightly" => {
let version = env!("CARGO_PKG_VERSION");
if let Some(hash) = extract_sha(option_env!("CIRRUS_CHANGE_IN_REPO")) {
// May be set if we're building with Cirrus CI.
output_nightly_version(version, hash);
} else if let Some(hash) = extract_sha(option_env!("GITHUB_SHA")) {
// May be set if we're building with GHA.
output_nightly_version(version, hash);
} else if let Ok(output) = std::process::Command::new("git")
.args(["rev-parse", "--short=8", "HEAD"])
.output()
{
// If we're not building in either, we do the lazy thing and fall back to
// manually grabbing info using git as a command.
let hash = String::from_utf8(output.stdout).unwrap();
output_nightly_version(version, &hash);
}
}
_ => {}
}
println!("cargo:rerun-if-env-changed={ENV_KEY}");
println!("cargo:rerun-if-env-changed=CIRRUS_CHANGE_IN_REPO");
}
fn main() -> io::Result<()> {
btm_generate()?;
nightly_version();
Ok(())
}