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use std::ffi::OsStr;
use std::fs;
use std::path::{Path, PathBuf};
use walkdir::WalkDir;
// The maximum length allowed for stderr files.
//
// We limit this because small files are easier to deal with than bigger files.
const LENGTH_LIMIT: usize = 200;
pub fn check() {
let exceeding_files: Vec<_> = exceeding_stderr_files();
if !exceeding_files.is_empty() {
eprintln!("Error: stderr files exceeding limit of {} lines:", LENGTH_LIMIT);
for path in exceeding_files {
println!("{}", path.display());
}
std::process::exit(1);
}
}
fn exceeding_stderr_files() -> Vec<PathBuf> {
// We use `WalkDir` instead of `fs::read_dir` here in order to recurse into subdirectories.
WalkDir::new("../tests/ui")
.into_iter()
.filter_map(Result::ok)
.filter_map(|e| {
let p = e.into_path();
if p.extension() == Some(OsStr::new("stderr")) && count_linenumbers(&p) > LENGTH_LIMIT {
Some(p)
} else {
None
}
})
.collect()
}
#[must_use]
fn count_linenumbers(filepath: &Path) -> usize {
match fs::read(filepath) {
Ok(content) => bytecount::count(&content, b'\n'),
Err(e) => {
eprintln!("Failed to read file: {}", e);
0
},
}
}
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