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use std::{collections::BTreeMap, ffi::OsString, path::PathBuf, rc::Rc};
#[doc(hidden)]
pub(crate) fn ct_force_new_env() -> Rc<CTEnv> {
CT_ENV.with(|env| {
let mut env = env.lock().unwrap();
*env = priv_new_env();
env.clone()
})
}
pub fn ct_env() -> Rc<CTEnv> {
CT_ENV.with(|env| env.lock().unwrap().clone())
}
#[macro_export]
macro_rules! ct_info {
($($tt:tt)*) => { $crate::_cargo_task_util::ct_info(&format!($($tt)*)) };
}
#[macro_export]
macro_rules! ct_warn {
($($tt:tt)*) => { $crate::_cargo_task_util::ct_warn(&format!($($tt)*)) };
}
#[macro_export]
macro_rules! ct_fatal {
($($tt:tt)*) => { $crate::_cargo_task_util::ct_fatal(&format!($($tt)*)) };
}
#[macro_export]
macro_rules! ct_check_fatal {
($code:expr) => {
match { $code } {
Err(e) => $crate::ct_fatal!("{:#?}", e),
Ok(r) => r,
}
};
}
#[derive(Debug)]
pub struct CTEnv {
pub cargo_path: PathBuf,
pub cargo_task_path: PathBuf,
pub cargo_task_target: PathBuf,
pub work_dir: PathBuf,
pub task_list: Vec<String>,
pub arg_list: Vec<String>,
pub tasks: BTreeMap<String, CTTaskMeta>,
}
impl CTEnv {
pub fn cargo(&self) -> std::process::Command {
std::process::Command::new(&self.cargo_path)
}
pub fn exec(&self, mut cmd: std::process::Command) -> std::io::Result<()> {
let non_zero_err = format!("{:?} exited non-zero", cmd);
if !cmd.spawn()?.wait()?.success() {
return Err(std::io::Error::new(
std::io::ErrorKind::Other,
non_zero_err,
));
}
Ok(())
}
pub fn set_env<N: AsRef<str>, V: AsRef<str>>(&self, name: N, val: V) {
let name = name.as_ref();
let val = val.as_ref();
std::env::set_var(name, val);
let directive = format!("@ct-set-env@ {}={} @@\n", name, val);
let mut p = self.cargo_task_target.clone();
let directive_file_name =
format!("task-directive-{}.atat", std::process::id());
p.push(directive_file_name);
FRESH_DIRECTIVE.call_once(|| {
let _ = std::fs::remove_file(&p);
});
let mut f = ct_check_fatal!(std::fs::OpenOptions::new()
.write(true)
.append(true)
.create(true)
.open(&p));
use std::io::Write;
ct_check_fatal!(f.write_all(directive.as_bytes()));
ct_check_fatal!(f.sync_all());
}
}
static FRESH_DIRECTIVE: std::sync::Once = std::sync::Once::new();
#[derive(Debug)]
pub struct CTTaskMeta {
pub name: String,
pub is_script: bool,
pub min_version: Option<String>,
pub path: PathBuf,
pub default: bool,
pub bootstrap: bool,
pub help: String,
pub cargo_deps: Option<String>,
pub task_deps: Vec<String>,
}
#[derive(Clone, Copy)]
pub enum CTLogLevel {
Info,
Warn,
Fatal,
}
pub fn ct_log(lvl: CTLogLevel, text: &str) {
let with_color = std::env::var_os("CT_NO_COLOR").is_none()
&& (std::env::var_os("CT_WITH_COLOR").is_some() || DEFAULT_WITH_COLOR);
let task_name = std::env::var_os("CT_CUR_TASK")
.map(|s| s.to_string_lossy().to_string())
.unwrap_or_else(|| "".to_string());
let t_colon = if task_name.is_empty() { "" } else { ":" };
let base = if with_color { "\x1b[97m" } else { "" };
let reset = if with_color { "\x1b[0m" } else { "" };
let (lvl_name, log) = match lvl {
CTLogLevel::Info => ("INFO", "\x1b[92m"),
CTLogLevel::Warn => ("WARN", "\x1b[93m"),
CTLogLevel::Fatal => ("FATAL", "\x1b[91m"),
};
let log = if with_color { log } else { "" };
for line in text.split('\n') {
eprintln!(
"{}[ct:{}{}{}{}{}]{} {}",
base, log, lvl_name, base, t_colon, task_name, reset, line
);
}
if let CTLogLevel::Fatal = lvl {
std::process::exit(1);
}
}
pub fn ct_info(text: &str) {
ct_log(CTLogLevel::Info, text)
}
pub fn ct_warn(text: &str) {
ct_log(CTLogLevel::Warn, text)
}
pub fn ct_fatal(text: &str) -> ! {
ct_log(CTLogLevel::Fatal, text);
std::process::exit(1);
}
#[cfg(windows)]
const DEFAULT_WITH_COLOR: bool = false;
#[cfg(not(windows))]
const DEFAULT_WITH_COLOR: bool = true;
thread_local! {
static CT_ENV: std::sync::Mutex<Rc<CTEnv>> = std::sync::Mutex::new(priv_new_env());
}
fn priv_new_env() -> Rc<CTEnv> {
let cargo_path = match std::env::var_os("CARGO").map(PathBuf::from) {
Some(cargo_path) => cargo_path,
None => ct_fatal!("CARGO binary path not set in environment"),
};
let work_dir = match std::env::var_os("CT_WORK_DIR").map(PathBuf::from) {
Some(work_dir) => work_dir,
None => ct_fatal!("CT_WORK_DIR environment variable not set"),
};
let cargo_task_path = match std::env::var_os("CT_PATH").map(PathBuf::from) {
Some(cargo_task_path) => cargo_task_path,
None => ct_fatal!("CT_PATH environment variable not set"),
};
let cargo_task_target =
match std::env::var_os("CT_TARGET").map(PathBuf::from) {
Some(cargo_task_target) => cargo_task_target,
None => ct_fatal!("CT_TARGET environment variable not set"),
};
let task_list = match std::env::var_os("CT_TASKS") {
Some(args) => args
.to_string_lossy()
.split_whitespace()
.map(|s| s.to_string())
.collect::<Vec<_>>(),
None => Vec::with_capacity(0),
};
let arg_list = match std::env::var_os("CT_ARGS") {
Some(args) => args
.to_string_lossy()
.split_whitespace()
.map(|s| s.to_string())
.collect::<Vec<_>>(),
None => Vec::with_capacity(0),
};
let tasks = ct_check_fatal!(enumerate_task_metadata());
Rc::new(CTEnv {
cargo_path,
work_dir,
cargo_task_path,
cargo_task_target,
task_list,
arg_list,
tasks,
})
}
#[allow(clippy::unnecessary_wraps)]
fn enumerate_task_metadata(
) -> Result<BTreeMap<String, CTTaskMeta>, &'static str> {
let mut out = BTreeMap::new();
let env = std::env::vars_os().collect::<BTreeMap<OsString, OsString>>();
for (env_k, env_v) in env.iter() {
let env_k = env_k.to_string_lossy();
if env_k.starts_with("CT_TASK_") && env_k.ends_with("_PATH") {
let name = env_k[8..env_k.len() - 5].to_string();
let script_name = format!("CT_TASK_{}_IS_SCRIPT", name);
let is_script = env.contains_key(&OsString::from(script_name));
let mv_name = format!("CT_TASK_{}_MIN_VER", name);
let min_version = env
.get(&OsString::from(mv_name))
.map(|v| v.to_string_lossy().to_string());
let def_name = format!("CT_TASK_{}_DEFAULT", name);
let default = env.contains_key(&OsString::from(def_name));
let bs_name = format!("CT_TASK_{}_BOOTSTRAP", name);
let bootstrap = env.contains_key(&OsString::from(bs_name));
let help_name = format!("CT_TASK_{}_HELP", name);
let help = env
.get(&OsString::from(help_name))
.map(|s| s.to_string_lossy().to_string())
.unwrap_or_else(|| "".to_string());
let deps_name = format!("CT_TASK_{}_CARGO_DEPS", name);
let cargo_deps = env
.get(&OsString::from(deps_name))
.map(|v| v.to_string_lossy().to_string());
let deps_name = format!("CT_TASK_{}_TASK_DEPS", name);
let mut task_deps = Vec::new();
if let Some(deps) = env.get(&OsString::from(deps_name)) {
for dep in deps.to_string_lossy().split_whitespace() {
task_deps.push(dep.to_string());
}
}
let path = PathBuf::from(env_v);
out.insert(
name.clone(),
CTTaskMeta {
name,
is_script,
min_version,
path,
default,
bootstrap,
help,
cargo_deps,
task_deps,
},
);
}
}
Ok(out)
}