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build.rs
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build.rs
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// Copyright (C) 2019-2021 Aleo Systems Inc.
// This file is part of the Aleo library.
// The Aleo library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// The Aleo library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with the Aleo library. If not, see <https://www.gnu.org/licenses/>.
use std::{fs::File, io::Read, path::Path};
use walkdir::WalkDir;
// The following license text that should be present at the beginning of every source file.
const EXPECTED_LICENSE_TEXT: &[u8] = include_bytes!(".resources/license_header");
// The following directories will be excluded from the license scan.
const DIRS_TO_SKIP: [&str; 8] = [".cargo", ".circleci", ".git", ".github", ".resources", "examples", "js", "target"];
fn check_file_licenses<P: AsRef<Path>>(path: P) {
let path = path.as_ref();
let mut iter = WalkDir::new(path).into_iter();
while let Some(entry) = iter.next() {
let entry = entry.unwrap();
let entry_type = entry.file_type();
// Skip the specified directories.
if entry_type.is_dir() && DIRS_TO_SKIP.contains(&entry.file_name().to_str().unwrap_or("")) {
iter.skip_current_dir();
continue;
}
// Check all files with the ".rs" extension.
if entry_type.is_file() && entry.file_name().to_str().unwrap_or("").ends_with(".rs") {
let file = File::open(entry.path()).unwrap();
let mut contents = Vec::with_capacity(EXPECTED_LICENSE_TEXT.len());
file.take(EXPECTED_LICENSE_TEXT.len() as u64).read_to_end(&mut contents).unwrap();
assert!(
contents == EXPECTED_LICENSE_TEXT,
"The license in \"{}\" is either missing or it doesn't match the expected string!",
entry.path().display()
);
}
}
// Re-run upon any changes to the workspace.
println!("cargo:rerun-if-changed=.");
}
// The build script; it currently only checks the licenses.
fn main() {
// Check licenses in the current folder.
check_file_licenses(".");
}