#![allow(unused_unsafe)]
#![allow(clippy::useless_transmute)]
#![allow(clippy::redundant_closure_call)]
mod tests;
#[allow(dead_code)]
#[allow(non_camel_case_types)]
#[allow(non_snake_case)]
#[allow(non_upper_case_globals)]
mod bindings {
include!("bindings.rs");
}
use bindings::*;
use flagset::{flags, FlagSet};
use paste::paste;
use std::ffi::{c_char, c_int, c_uint, c_void, CStr, CString, NulError};
use std::fmt::{Display, Formatter};
use std::marker::PhantomData;
use std::mem::transmute;
use std::rc::Rc;
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error("{0}")]
InvalidInput(String),
#[error("NulError from CString::new")]
NulError(#[from] NulError),
}
impl From<std::convert::Infallible> for Error {
fn from(_: std::convert::Infallible) -> Self {
unreachable!()
}
}
fn c2r_str(str: *mut c_char) -> String {
let mut res = String::new();
if !str.is_null() {
unsafe { res = CStr::from_ptr(str).to_string_lossy().to_string() };
unsafe { ZXing_free(str as *mut c_void) };
}
res
}
fn c2r_vec(buf: *mut u8, len: c_int) -> Vec<u8> {
let mut res = Vec::<u8>::new();
if !buf.is_null() && len > 0 {
unsafe { res = std::slice::from_raw_parts(buf, len as usize).to_vec() };
unsafe { ZXing_free(buf as *mut c_void) };
}
res
}
fn last_error() -> Error {
match unsafe { ZXing_LastErrorMsg().as_mut() } {
None => panic!("Internal error: ZXing_LastErrorMsg() returned NULL"),
Some(error) => Error::InvalidInput(c2r_str(error)),
}
}
macro_rules! last_error_or {
($expr:expr) => {
match unsafe { ZXing_LastErrorMsg().as_mut() } {
None => Ok($expr),
Some(error) => Err(Error::InvalidInput(c2r_str(error))),
}
};
}
macro_rules! last_error_if_null_or {
($ptr:ident, $expr:expr) => {
match $ptr.is_null() {
true => Err(last_error()),
false => Ok($expr),
}
};
}
macro_rules! make_zxing_class {
($r_class:ident, $c_class:ident) => {
paste! {
pub struct $r_class(*mut $c_class);
impl Drop for $r_class {
fn drop(&mut self) {
unsafe { [<$c_class _delete>](self.0) }
}
}
}
};
}
macro_rules! make_zxing_class_with_default {
($r_class:ident, $c_class:ident) => {
make_zxing_class!($r_class, $c_class);
paste! {
impl $r_class {
pub fn new() -> Self {
unsafe { $r_class([<$c_class _new>]()) }
}
}
impl Default for $r_class {
fn default() -> Self {
Self::new()
}
}
}
};
}
macro_rules! getter {
($class:ident, $c_name:ident, $r_name:ident, $conv:expr, $type:ty) => {
pub fn $r_name(&self) -> $type {
paste! { unsafe { $conv([<ZXing_ $class _ $c_name>](self.0)) } }
}
};
($class:ident, $c_name:ident, $conv:expr, $type:ty) => {
paste! { getter! { $class, $c_name, [<$c_name:snake>], $conv, $type } }
};
}
macro_rules! property {
($class:ident, $c_name:ident, $r_name:ident, String) => {
pub fn $r_name(self, v: impl AsRef<str>) -> Self {
let cstr = CString::new(v.as_ref()).unwrap();
paste! { unsafe { [<ZXing_ $class _set $c_name>](self.0, cstr.as_ptr()) } };
self
}
paste! {
pub fn [<set_ $r_name>](&mut self, v : impl AsRef<str>) -> &mut Self {
let cstr = CString::new(v.as_ref()).unwrap();
unsafe { [<ZXing_ $class _set $c_name>](self.0, cstr.as_ptr()) };
self
}
pub fn [<get_ $r_name>](&self) -> String {
unsafe { c2r_str([<ZXing_ $class _get $c_name>](self.0)) }
}
}
};
($class:ident, $c_name:ident, $r_name:ident, $type:ty) => {
pub fn $r_name(self, v: impl Into<$type>) -> Self {
paste! { unsafe { [<ZXing_ $class _set $c_name>](self.0, transmute(v.into())) } };
self
}
paste! {
pub fn [<set_ $r_name>](&mut self, v : impl Into<$type>) -> &mut Self {
unsafe { [<ZXing_ $class _set $c_name>](self.0, transmute(v.into())) };
self
}
pub fn [<get_ $r_name>](&self) -> $type {
unsafe { transmute([<ZXing_ $class _get $c_name>](self.0)) }
}
}
};
($class:ident, $c_name:ident, $type:ty) => {
paste! { property! { $class, $c_name, [<$c_name:snake>], $type } }
};
}
macro_rules! make_zxing_enum {
($name:ident { $($field:ident),* }) => {
#[repr(u32)]
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum $name {
$($field = paste! { [<ZXing_ $name _ $field>] },)*
}
}
}
macro_rules! make_zxing_flags {
($name:ident { $($field:ident),* }) => {
flags! {
#[repr(u32)]
pub enum $name: c_uint {
$($field = paste! { [<ZXing_ $name _ $field>] },)*
}
}
}
}
#[rustfmt::skip] make_zxing_enum!(ImageFormat { Lum, LumA, RGB, BGR, RGBA, ARGB, BGRA, ABGR });
#[rustfmt::skip]
make_zxing_enum!(ContentType { Text, Binary, Mixed, GS1, ISO15434, UnknownECI });
#[rustfmt::skip]
make_zxing_enum!(Binarizer { LocalAverage, GlobalHistogram, FixedThreshold, BoolCast });
#[rustfmt::skip]
make_zxing_enum!(TextMode { Plain, ECI, HRI, Hex, Escaped });
#[rustfmt::skip]
make_zxing_enum!(EanAddOnSymbol { Ignore, Read, Require });
#[rustfmt::skip]
make_zxing_flags!(BarcodeFormat {
None, Aztec, Codabar, Code39, Code93, Code128, DataBar, DataBarExpanded, DataMatrix, EAN8, EAN13, ITF,
MaxiCode, PDF417, QRCode, UPCA, UPCE, MicroQRCode, RMQRCode, DXFilmEdge, LinearCodes, MatrixCodes, Any
});
impl Display for BarcodeFormat {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", unsafe { c2r_str(ZXing_BarcodeFormatToString(BarcodeFormats::from(*self).bits())) })
}
}
impl Display for ContentType {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", unsafe { c2r_str(ZXing_ContentTypeToString(transmute(*self))) })
}
}
pub type BarcodeFormats = FlagSet<BarcodeFormat>;
pub trait FromStr: Sized {
fn from_str(str: impl AsRef<str>) -> Result<Self, Error>;
}
impl FromStr for BarcodeFormat {
fn from_str(str: impl AsRef<str>) -> Result<BarcodeFormat, Error> {
let cstr = CString::new(str.as_ref())?;
let res = unsafe { BarcodeFormats::new_unchecked(ZXing_BarcodeFormatFromString(cstr.as_ptr())) };
match res.bits() {
u32::MAX => last_error_or!(BarcodeFormat::None),
_ => Ok(res.into_iter().last().unwrap()),
}
}
}
impl FromStr for BarcodeFormats {
fn from_str(str: impl AsRef<str>) -> Result<BarcodeFormats, Error> {
let cstr = CString::new(str.as_ref())?;
let res = unsafe { BarcodeFormats::new_unchecked(ZXing_BarcodeFormatsFromString(cstr.as_ptr())) };
match res.bits() {
u32::MAX => last_error_or!(BarcodeFormats::default()),
0 => Ok(BarcodeFormats::full()),
_ => Ok(res),
}
}
}
#[derive(Debug, PartialEq)]
struct ImageViewOwner<'a>(*mut ZXing_ImageView, PhantomData<&'a u8>);
impl Drop for ImageViewOwner<'_> {
fn drop(&mut self) {
unsafe { ZXing_ImageView_delete(self.0) }
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct ImageView<'a>(Rc<ImageViewOwner<'a>>);
impl<'a> From<&'a ImageView<'a>> for ImageView<'a> {
fn from(img: &'a ImageView) -> Self {
img.clone()
}
}
impl<'a> ImageView<'a> {
fn try_into_int<T: TryInto<c_int>>(val: T) -> Result<c_int, Error> {
val.try_into().map_err(|_| Error::InvalidInput("Could not convert Integer into c_int.".to_string()))
}
pub unsafe fn from_ptr<T: TryInto<c_int>, U: TryInto<c_int>>(
ptr: *const u8,
width: T,
height: T,
format: ImageFormat,
row_stride: U,
pix_stride: U,
) -> Result<Self, Error> {
let iv = ZXing_ImageView_new(
ptr,
Self::try_into_int(width)?,
Self::try_into_int(height)?,
format as ZXing_ImageFormat,
Self::try_into_int(row_stride)?,
Self::try_into_int(pix_stride)?,
);
last_error_if_null_or!(iv, ImageView(Rc::new(ImageViewOwner(iv, PhantomData))))
}
pub fn from_slice<T: TryInto<c_int>>(data: &'a [u8], width: T, height: T, format: ImageFormat) -> Result<Self, Error> {
unsafe {
let iv = ZXing_ImageView_new_checked(
data.as_ptr(),
data.len() as c_int,
Self::try_into_int(width)?,
Self::try_into_int(height)?,
format as ZXing_ImageFormat,
0,
0,
);
last_error_if_null_or!(iv, ImageView(Rc::new(ImageViewOwner(iv, PhantomData))))
}
}
pub fn cropped(self, left: i32, top: i32, width: i32, height: i32) -> Self {
unsafe { ZXing_ImageView_crop((self.0).0, left, top, width, height) }
self
}
pub fn rotated(self, degree: i32) -> Self {
unsafe { ZXing_ImageView_rotate((self.0).0, degree) }
self
}
}
#[cfg(feature = "image")]
use image;
#[cfg(feature = "image")]
impl<'a> From<&'a image::GrayImage> for ImageView<'a> {
fn from(img: &'a image::GrayImage) -> Self {
ImageView::from_slice(img.as_ref(), img.width(), img.height(), ImageFormat::Lum).unwrap()
}
}
#[cfg(feature = "image")]
impl<'a> TryFrom<&'a image::DynamicImage> for ImageView<'a> {
type Error = Error;
fn try_from(img: &'a image::DynamicImage) -> Result<Self, Error> {
let format = match img {
image::DynamicImage::ImageLuma8(_) => Some(ImageFormat::Lum),
image::DynamicImage::ImageLumaA8(_) => Some(ImageFormat::LumA),
image::DynamicImage::ImageRgb8(_) => Some(ImageFormat::RGB),
image::DynamicImage::ImageRgba8(_) => Some(ImageFormat::RGBA),
_ => None,
};
match format {
Some(format) => Ok(ImageView::from_slice(img.as_bytes(), img.width(), img.height(), format)?),
None => Err(Error::InvalidInput("Invalid image format (must be either luma8|lumaA8|rgb8|rgba8)".to_string())),
}
}
}
make_zxing_class!(Image, ZXing_Image);
impl Image {
getter!(Image, width, transmute, i32);
getter!(Image, height, transmute, i32);
getter!(Image, format, transmute, ImageFormat);
pub fn data(&self) -> Vec<u8> {
let ptr = unsafe { ZXing_Image_data(self.0) };
if ptr.is_null() {
Vec::<u8>::new()
} else {
unsafe { std::slice::from_raw_parts(ptr, (self.width() * self.height()) as usize).to_vec() }
}
}
}
#[cfg(feature = "image")]
impl From<&Image> for image::GrayImage {
fn from(img: &Image) -> image::GrayImage {
image::GrayImage::from_vec(img.width() as u32, img.height() as u32, img.data()).unwrap()
}
}
#[derive(Error, Debug, PartialEq)]
pub enum BarcodeError {
#[error("")]
None(),
#[error("{0}")]
Checksum(String),
#[error("{0}")]
Format(String),
#[error("{0}")]
Unsupported(String),
}
pub type PointI = ZXing_PointI;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct Position {
pub top_left: PointI,
pub top_right: PointI,
pub bottom_right: PointI,
pub bottom_left: PointI,
}
impl Display for PointI {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}x{}", self.x, self.y)
}
}
impl Display for Position {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", unsafe {
c2r_str(ZXing_PositionToString(*(self as *const Position as *const ZXing_Position)))
})
}
}
make_zxing_class!(Barcode, ZXing_Barcode);
impl Barcode {
getter!(Barcode, isValid, transmute, bool);
getter!(Barcode, format, (|f| BarcodeFormats::new(f).unwrap().into_iter().last().unwrap()), BarcodeFormat);
getter!(Barcode, contentType, transmute, ContentType);
getter!(Barcode, text, c2r_str, String);
getter!(Barcode, ecLevel, c2r_str, String);
getter!(Barcode, symbologyIdentifier, c2r_str, String);
getter!(Barcode, position, transmute, Position);
getter!(Barcode, orientation, transmute, i32);
getter!(Barcode, hasECI, has_eci, transmute, bool);
getter!(Barcode, isInverted, transmute, bool);
getter!(Barcode, isMirrored, transmute, bool);
getter!(Barcode, lineCount, transmute, i32);
pub fn bytes(&self) -> Vec<u8> {
let mut len: c_int = 0;
unsafe { c2r_vec(ZXing_Barcode_bytes(self.0, &mut len), len) }
}
pub fn bytes_eci(&self) -> Vec<u8> {
let mut len: c_int = 0;
unsafe { c2r_vec(ZXing_Barcode_bytesECI(self.0, &mut len), len) }
}
pub fn error(&self) -> BarcodeError {
let error_type = unsafe { ZXing_Barcode_errorType(self.0) };
let error_msg = unsafe { c2r_str(ZXing_Barcode_errorMsg(self.0)) };
#[allow(non_upper_case_globals)]
match error_type {
ZXing_ErrorType_None => BarcodeError::None(),
ZXing_ErrorType_Format => BarcodeError::Format(error_msg),
ZXing_ErrorType_Checksum => BarcodeError::Checksum(error_msg),
ZXing_ErrorType_Unsupported => BarcodeError::Unsupported(error_msg),
_ => panic!("Internal error: invalid ZXing_ErrorType"),
}
}
pub fn to_svg_with(&self, opts: &BarcodeWriter) -> Result<String, Error> {
let str = unsafe { ZXing_WriteBarcodeToSVG(self.0, opts.0) };
last_error_if_null_or!(str, c2r_str(str))
}
pub fn to_svg(&self) -> Result<String, Error> {
self.to_svg_with(&BarcodeWriter::default())
}
pub fn to_image_with(&self, opts: &BarcodeWriter) -> Result<Image, Error> {
let img = unsafe { ZXing_WriteBarcodeToImage(self.0, opts.0) };
last_error_if_null_or!(img, Image(img))
}
pub fn to_image(&self) -> Result<Image, Error> {
self.to_image_with(&BarcodeWriter::default())
}
}
make_zxing_class_with_default!(BarcodeReader, ZXing_ReaderOptions);
impl BarcodeReader {
property!(ReaderOptions, TryHarder, bool);
property!(ReaderOptions, TryRotate, bool);
property!(ReaderOptions, TryInvert, bool);
property!(ReaderOptions, TryDownscale, bool);
property!(ReaderOptions, IsPure, bool);
property!(ReaderOptions, ReturnErrors, bool);
property!(ReaderOptions, Formats, BarcodeFormats);
property!(ReaderOptions, TextMode, TextMode);
property!(ReaderOptions, Binarizer, Binarizer);
property!(ReaderOptions, EanAddOnSymbol, EanAddOnSymbol);
property!(ReaderOptions, MaxNumberOfSymbols, i32);
property!(ReaderOptions, MinLineCount, i32);
pub fn from<'a, IV>(&self, image: IV) -> Result<Vec<Barcode>, Error>
where
IV: TryInto<ImageView<'a>>,
IV::Error: Into<Error>,
{
let iv_: ImageView = image.try_into().map_err(Into::into)?;
unsafe {
let results = ZXing_ReadBarcodes((iv_.0).0, self.0);
if !results.is_null() {
let size = ZXing_Barcodes_size(results);
let mut vec = Vec::<Barcode>::with_capacity(size as usize);
for i in 0..size {
vec.push(Barcode(ZXing_Barcodes_move(results, i)));
}
ZXing_Barcodes_delete(results);
Ok(vec)
} else {
Err(last_error())
}
}
}
}
make_zxing_class!(BarcodeCreator, ZXing_CreatorOptions);
impl BarcodeCreator {
pub fn new(format: BarcodeFormat) -> Self {
unsafe { BarcodeCreator(ZXing_CreatorOptions_new(BarcodeFormats::from(format).bits())) }
}
property!(CreatorOptions, ReaderInit, bool);
property!(CreatorOptions, ForceSquareDataMatrix, bool);
property!(CreatorOptions, EcLevel, String);
pub fn from_str(&self, str: impl AsRef<str>) -> Result<Barcode, Error> {
let cstr = CString::new(str.as_ref())?;
let bc = unsafe { ZXing_CreateBarcodeFromText(cstr.as_ptr(), 0, self.0) };
last_error_if_null_or!(bc, Barcode(bc))
}
pub fn from_slice(&self, data: impl AsRef<[u8]>) -> Result<Barcode, Error> {
let data = data.as_ref();
let bc = unsafe { ZXing_CreateBarcodeFromBytes(data.as_ptr() as *const c_void, data.len() as i32, self.0) };
last_error_if_null_or!(bc, Barcode(bc))
}
}
make_zxing_class_with_default!(BarcodeWriter, ZXing_WriterOptions);
impl BarcodeWriter {
property!(WriterOptions, Scale, i32);
property!(WriterOptions, SizeHint, i32);
property!(WriterOptions, Rotate, i32);
property!(WriterOptions, WithHRT, with_hrt, bool);
property!(WriterOptions, WithQuietZones, bool);
}
pub fn read() -> BarcodeReader {
BarcodeReader::default()
}
pub fn create(format: BarcodeFormat) -> BarcodeCreator {
BarcodeCreator::new(format)
}
pub fn write() -> BarcodeWriter {
BarcodeWriter::default()
}