Crate tuv 

QR code generation library.

Tuv is named for the three letters after QRS in the alphabet — a nod to QR codes and the sequential nature of encoding.

Quick start

use tuv::QRCode;

let qr = QRCode::from("Hello, world!").generate().unwrap();
let svg = qr.to_svg(true);
let png = qr.to_png(300, true);

Defaults

With no builder options, QRCode::from auto-selects the smallest Normal QR version and the lowest ECC level (L → M → Q → H) that fit the input. Use QRCodeBuilder::with_ecc or QRCodeBuilder::with_version to fix either field.

Text vs bytes vs Kanji

QRCode::from accepts UTF-8 strings and encodes them in byte mode (one byte per character code unit). It does not switch to Kanji mode for Japanese text.

True Kanji mode (Shift JIS double-byte characters) requires raw Shift JIS bytes: use QRCode::from_bytes or Bits::push_kanji_data on the low-level Bits API.

Architecture

Input -> Mode Select -> Reed-Solomon ECC -> Block Interleave
       -> Function Patterns -> Matrix -> Data Placement -> Masking
       -> Format Info -> SVG / PNG

Re-exports

pub use encoder::Encoder;

pub use encoder::Mode;

pub use error_correction::ECCLevel;

pub use matrix::Module;

pub use matrix::QRMatrix;

pub use types::Color;

pub use types::QRGenError;

pub use types::QrResult;

pub use types::Version;

pub use qrcode::QRCode;

pub use qrcode::QRCodeBuilder;

Modules

bits

Low-level bit stream API mirroring the reference qrcode crate.

encoder

Encoder module — handles mode selection and data encoding.

error_correction

Error correction module.

matrix

Matrix module — constructs the QR module grid.

micro

Micro QR code encoding (v1–4).

qrcode

Top-level orchestration of the encode pipeline.

render

Rendering — SVG, PNG, unicode, and luma image output.

types

Shared types mirroring the reference qrcode crate API.