simple_endian 0.4.10

//! Example demonstrating UTF-16 and UTF-32 conversions via `text_ops`.
//!
//! Run with:
//!
//! ```sh
//! cargo run --example text_ops_usage --features text_all
//! ```

#[cfg(any(feature = "text_utf16", feature = "text_utf32"))]
use simple_endian::*;

fn main() {
    println!("=== text_ops UTF examples ===\n");

    let s = "Hello 🦀 — こんにちは";
    println!("input: {s}");

    #[cfg(feature = "text_utf16")]
    {
        println!("\n-- UTF-16 --");
        // Host-endian alias: Utf16StringLE on little-endian machines, Utf16StringBE on big-endian machines.
        let u16s = Utf16String::from(s);
        println!("u16 code units: {}", u16s.0.len());

        let back = String::try_from(&u16s).expect("valid UTF-16");
        println!("round-trip ok: {}", back == s);

        // Demonstrate error handling.
        let bad = [BigEndian::from(0xD800u16)];
        let err = String::try_from(Utf16StrBE::from(&bad[..])).unwrap_err();
        println!("invalid UTF-16 rejected: {err}");
    }

    #[cfg(feature = "text_utf32")]
    {
        println!("\n-- UTF-32 --");
        // Host-endian alias: Utf32StringLE on little-endian machines, Utf32StringBE on big-endian machines.
        let u32s = Utf32String::from(s);
        println!("u32 code units: {}", u32s.0.len());

        let back = String::try_from(&u32s).expect("valid UTF-32");
        println!("round-trip ok: {}", back == s);

        let bad = [BigEndian::from(0x11_0000u32)];
        let err = String::try_from(Utf32StrBE::from(&bad[..])).unwrap_err();
        println!("invalid UTF-32 rejected: {err}");
    }
}