Crate classnames_const_rs

A Rust macro library for compile-time CSS class name concatenation and processing

Features

• Zero runtime overhead - everything happens at compile time
• Automatic whitespace handling and normalization
• Support for concatenating multiple class names
• Removes leading/trailing whitespace and collapses multiple spaces

Examples

Basic usage:

use classnames_const_rs::*;

const BUTTON_CLASS: &str = classnames_concat!("btn", "btn-primary");
assert_eq!(BUTTON_CLASS, "btn btn-primary");

Handling messy whitespace:

use classnames_const_rs::*;

const COMPLEX_CLASS: &str = classnames_concat!("header  ", "  main  ", "footer");
assert_eq!(COMPLEX_CLASS, "header main footer");

Empty strings are handled gracefully:

use classnames_const_rs::*;

const SPARSE_CLASS: &str = classnames_concat!("", "active", "", "highlight");
assert_eq!(SPARSE_CLASS, "active highlight");

Macros

classnames_concat

Concatenates multiple class name strings with automatic whitespace handling

trim_format

Formats a string by normalizing whitespace characters