Function to_snake_case

rust/fory-core/src/util/string_util.rs:111–130

Converts a camelCase or PascalCase string to snake_case.

(name: &str)

/// Converts a camelCase or PascalCase string to snake_case.
pub fn to_snake_case(name: &str) -> String {
    let mut result = String::with_capacity(name.len() + 4);
    let chars: Vec<char> = name.chars().collect();

    for (i, &c) in chars.iter().enumerate() {
        if c.is_ascii_uppercase() {
            if i > 0 {
                let prev_upper = chars.get(i - 1).is_some_and(|c| c.is_ascii_uppercase());
                let next_upper_or_end = chars.get(i + 1).map_or(true, |c| c.is_ascii_uppercase());
                if !prev_upper || !next_upper_or_end {
                    result.push('_');
                }
            }
            result.push(c.to_ascii_lowercase());
        } else {
            result.push(c);
        }
    }
    result
}

/// Converts a snake_case string to lowerCamelCase.
pub fn to_camel_case(name: &str) -> String {