gled-model 2.32.1

The data model of gled: projects, scenes, effects, animations, curves and assets
Documentation 
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//! Names that must not repeat among their siblings: layouts, modes, fixtures
//! and assets in one folder.

/// `base`, or `base 2`, `base 3`, … — the first not already in `existing`.
pub fn unique_name<'a>(base: &str, existing: impl Iterator<Item = &'a str>) -> String {
    let taken: Vec<&str> = existing.collect();
    if !taken.contains(&base) {
        return base.to_string();
    }
    let mut counter = 2;
    loop {
        let candidate = format!("{base} {counter}");
        if !taken.contains(&candidate.as_str()) {
            return candidate;
        }
        counter += 1;
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn unique_name_avoids_collisions() {
        assert_eq!(unique_name("Mode", ["Default"].into_iter()), "Mode");
        assert_eq!(unique_name("Mode", ["Mode"].into_iter()), "Mode 2");
        assert_eq!(
            unique_name("Mode", ["Mode", "Mode 2"].into_iter()),
            "Mode 3"
        );
    }
}