struct-cli 0.4.2

A smarter tree command with intelligent defaults. Filters out common clutter like node_modules and venv, supports custom ignore patterns, and includes advanced features such as file search, directory summaries, size-aware filtering, and git integration.
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use std::fs;
use std::path::Path;
use walkdir::WalkDir;

/// Format bytes into human-readable size (B, K, M, G)
pub fn format_size(bytes: u64) -> String {
    const KB: u64 = 1024;
    const MB: u64 = KB * 1024;
    const GB: u64 = MB * 1024;

    if bytes >= GB {
        format!("{:.1}G", bytes as f64 / GB as f64)
    } else if bytes >= MB {
        format!("{:.1}M", bytes as f64 / MB as f64)
    } else if bytes >= KB {
        format!("{:.1}K", bytes as f64 / KB as f64)
    } else {
        format!("{}B", bytes)
    }
}

/// Check if a file is executable
pub fn is_executable(path: &Path) -> bool {
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        if let Ok(metadata) = fs::metadata(path) {
            let permissions = metadata.permissions();
            return permissions.mode() & 0o111 != 0;
        }
    }
    
    #[cfg(not(unix))]
    {
        // On Windows, check common executable extensions
        if let Some(ext) = path.extension() {
            let ext = ext.to_string_lossy().to_lowercase();
            return matches!(ext.as_str(), "exe" | "bat" | "cmd" | "sh" | "py" | "ps1");
        }
    }
    
    false
}

/// Get total size of a directory recursively
pub fn get_dir_size(path: &Path) -> u64 {
    WalkDir::new(path)
        .follow_links(false)
        .into_iter()
        .filter_map(|e| e.ok())
        .filter_map(|e| e.metadata().ok())
        .filter(|m| m.is_file())
        .map(|m| m.len())
        .sum()
}