anza-xtask 0.2.0

Blockchain, Rebuilt for Scale
Documentation 
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use {
    anyhow::Result,
    ignore::WalkBuilder,
    std::path::{Path, PathBuf},
    walkdir::WalkDir,
};

pub fn recursive_find_files(
    path: &Path,
    filename: &str,
    filter_fn: impl Fn(&Path) -> bool,
) -> Result<Vec<PathBuf>> {
    let mut results = vec![];
    for result in WalkBuilder::new(path)
        .hidden(false)
        .git_ignore(true)
        .build()
        .filter_map(Result::ok)
    {
        let path = result.path();
        if !filter_fn(path) {
            continue;
        }
        let Some(file_name) = path.file_name().and_then(|f| f.to_str()) else {
            continue;
        };
        if file_name != filename {
            continue;
        }
        results.push(path.to_path_buf());
    }
    Ok(results)
}

pub fn find_files_by_name(filename: &str) -> Result<Vec<PathBuf>> {
    let git_root = super::git::get_git_root_path()?;
    let mut results = vec![];

    for entry in WalkDir::new(git_root)
        .into_iter()
        .filter_entry(|entry| {
            !entry
                .path()
                .components()
                .any(|c| c.as_os_str() == "target" || c.as_os_str() == ".git")
        })
        .filter_map(Result::ok)
        .filter(|e| e.file_name() == filename)
    {
        results.push(entry.path().to_path_buf());
    }

    Ok(results)
}

pub fn find_all_cargo_tomls() -> Result<Vec<PathBuf>> {
    find_files_by_name("Cargo.toml")
}

pub fn find_all_cargo_locks() -> Result<Vec<PathBuf>> {
    find_files_by_name("Cargo.lock")
}

#[cfg(test)]
mod tests {
    use {super::*, pretty_assertions::assert_eq, serial_test::serial, std::collections::HashSet};

    #[test]
    #[serial]
    fn test_find_cargo_files() {
        let root_dir = tempfile::tempdir().unwrap();
        let root_dir_path = root_dir.path();
        std::env::set_current_dir(root_dir_path).unwrap();
        std::process::Command::new("git")
            .args(["init"])
            .output()
            .unwrap();

        std::fs::write(
            root_dir_path.join("Cargo.toml"),
            "[workspace.package]\nversion = \"3.1.0\"",
        )
        .unwrap();
        std::fs::write(root_dir_path.join("Cargo.lock"), "").unwrap();
        std::fs::create_dir_all(root_dir_path.join("foo")).unwrap();
        std::fs::write(
            root_dir_path.join("foo/Cargo.toml"),
            "[package]\nname = \"foo\"",
        )
        .unwrap();
        std::fs::write(root_dir_path.join("foo/Cargo.lock"), "").unwrap();

        std::fs::create_dir_all(root_dir_path.join("bar")).unwrap();
        std::fs::write(
            root_dir_path.join("bar/Cargo.toml"),
            "[package]\nname = \"bar\"",
        )
        .unwrap();
        std::fs::write(root_dir_path.join("bar/Cargo.lock"), "").unwrap();

        {
            let files = find_all_cargo_tomls().unwrap();
            assert_eq!(files.len(), 3);

            let expected_files: HashSet<_> = [
                std::fs::canonicalize(root_dir_path.join("Cargo.toml")).unwrap(),
                std::fs::canonicalize(root_dir_path.join("foo/Cargo.toml")).unwrap(),
                std::fs::canonicalize(root_dir_path.join("bar/Cargo.toml")).unwrap(),
            ]
            .iter()
            .cloned()
            .collect();

            let actual_files: HashSet<_> = files.iter().cloned().collect();

            assert_eq!(expected_files, actual_files);
        }

        {
            let files = find_all_cargo_locks().unwrap();
            assert_eq!(files.len(), 3);

            let expected_files: HashSet<_> = [
                std::fs::canonicalize(root_dir_path.join("Cargo.lock")).unwrap(),
                std::fs::canonicalize(root_dir_path.join("foo/Cargo.lock")).unwrap(),
                std::fs::canonicalize(root_dir_path.join("bar/Cargo.lock")).unwrap(),
            ]
            .iter()
            .cloned()
            .collect();

            let actual_files: HashSet<_> = files.iter().cloned().collect();

            assert_eq!(expected_files, actual_files);
        }
    }
}