solverforge-cli 2.0.0

CLI for scaffolding and managing SolverForge constraint solver projects
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use crate::error::{CliError, CliResult};

pub(crate) fn validate_name(name: &str) -> CliResult {
    let valid = name.chars().enumerate().all(|(i, c)| {
        if i == 0 {
            c.is_ascii_lowercase()
        } else {
            c.is_ascii_lowercase() || c.is_ascii_digit() || c == '_'
        }
    });
    if !valid || name.is_empty() {
        return Err(CliError::InvalidName {
            name: name.to_string(),
        });
    }
    Ok(())
}

/// Converts `snake_case` to `Title Case` (space-separated words, each capitalized).
pub(crate) fn snake_to_title(name: &str) -> String {
    name.split('_')
        .map(|word| {
            let mut chars = word.chars();
            match chars.next() {
                None => String::new(),
                Some(c) => c.to_uppercase().collect::<String>() + chars.as_str(),
            }
        })
        .collect::<Vec<_>>()
        .join(" ")
}