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use super::{LodaCpp, LodaCppCheckResult};
use std::fs;
use std::path::Path;
use std::time::Duration;
use subprocess::{Popen, PopenConfig, Redirection};
use std::ffi::OsStr;
pub trait LodaCppCheck {
fn perform_check_and_save_output(&self, loda_program_path: &Path, time_limit: Duration, save_output_to_path: &Path) -> anyhow::Result<LodaCppCheckResult>;
}
impl LodaCppCheck for LodaCpp {
fn perform_check_and_save_output(&self, loda_program_path: &Path, time_limit: Duration, save_output_to_path: &Path) -> anyhow::Result<LodaCppCheckResult> {
lodacpp_perform_check_impl(&self, loda_program_path, time_limit, save_output_to_path)
}
}
fn lodacpp_perform_check_impl(
loda_cpp: &LodaCpp,
loda_program_path: &Path,
time_limit: Duration,
save_output_to_path: &Path
) -> anyhow::Result<LodaCppCheckResult> {
debug!("will perform check of {:?}, time_limit: {:?}", loda_program_path, time_limit);
assert!(loda_program_path.is_absolute());
assert!(loda_program_path.is_file());
let argv = [
loda_cpp.loda_cpp_executable().as_os_str(),
OsStr::new("check"),
loda_program_path.as_os_str(),
OsStr::new("-b"),
];
assert!(save_output_to_path.is_absolute());
let output_file = std::fs::File::create(save_output_to_path)?;
let mut child = Popen::create(
&argv,
PopenConfig {
stdout: Redirection::File(output_file),
..Default::default()
},
)?;
let mut did_timeout = false;
if let Some(exit_status) = child.wait_timeout(time_limit)? {
debug!("the child process has exited before reaching the time limit. exit-code: {:?}", exit_status);
} else {
debug!("timeout, kill child process");
child.kill()?;
did_timeout = true;
}
let contents: String = fs::read_to_string(&save_output_to_path)?;
let check_result = LodaCppCheckResult::parse(&contents, did_timeout)
.map_err(|e| anyhow::anyhow!("Unable to parse the stdout from loda check. path: {:?} error: {:?}", save_output_to_path, e))?;
Ok(check_result)
}
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