tagref 1.12.0

Tagref helps you maintain cross-references in your code.
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use crate::{directive::Directive, path_util::resolve_target_path};
use std::{fs::metadata, path::Path};

// This function checks that directory references actually point to directories. It returns a vector
// of error strings.
pub fn check(refs: &[Directive]) -> Vec<String> {
    let mut errors = Vec::<String>::new();

    for dir in refs {
        // The `unwrap` is safe because `file.path` should always exist in some parent directory.
        match metadata(resolve_target_path(
            dir.path.parent().unwrap(),
            Path::new(&dir.label),
        )) {
            Ok(metadata) => {
                if !metadata.is_dir() {
                    errors.push(format!("{dir} does not point to a directory."));
                }
            }
            Err(error) => {
                let error_string = error.to_string();
                errors.push(format!("Error when validating {dir}: {error_string}"));
            }
        }
    }

    errors
}