copyright: fixed copyright attribution

* Updated attribution in README.md
* Fixed headers in files ported from zxing-cpp
* updated internal copright documents with correct dates and owners.

Author: hschimke

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright [2019-2026] [rxing developers]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

@@ -1,6 +1,8 @@
 # rxing - cRustacean Crossing
 
-This is a port of the ZXing (https://github.com/zxing/zxing) java barcode library to pure rust. Conversion was done by hand. Original license resides with the authors of zxing.
+This is a port of the [ZXing](https://github.com/zxing/zxing) Java barcode library to pure Rust, converted by hand. ZXing is licensed under the Apache License 2.0; copyright remains with the original ZXing authors.
+
+Additional features were ported from [zxing-cpp](https://github.com/zxing-cpp/zxing-cpp), specifically enhancements to the QR Code, Datamatrix, and DX Film reader components. zxing-cpp is also licensed under the Apache License 2.0; copyright remains with the zxing-cpp contributors.
 
 Porting of the testing library is incomplete. Currently all positive tests are implemented. Negative verfication tests are not implemented.
 
@@ -209,4 +211,6 @@ fn main() {
 Currently tracking zxing 3.5.1
 
 ## Copyright notes
-The original license / copyright remains with the zxing developers. The license / copyright for the ported components of the c++ port remain with the developers of that port, where applicable.
+rxing is licensed under the Apache License 2.0.
+
+The ZXing library is licensed under the Apache License 2.0; copyright remains with the ZXing authors. Portions of this crate are ported from zxing-cpp, which is also licensed under the Apache License 2.0; copyright remains with the zxing-cpp contributors.

src/common/cpp_essentials/base_extentions/qr_ec_level.rs

@@ -1,3 +1,9 @@
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::qrcode::common::ErrorCorrectionLevel;
 
 impl ErrorCorrectionLevel {

src/common/cpp_essentials/base_extentions/qr_formatinformation.rs

@@ -1,3 +1,11 @@
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+* Copyright 2023 Axel Waggershauser
+* Copyright 2023 gitlost
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::qrcode::{
     common::{
         ErrorCorrectionLevel, FORMAT_INFO_MASK_MODEL2, FORMAT_INFO_MASK_QR, FormatInformation,

src/common/cpp_essentials/concentric_finder.rs

@@ -1,3 +1,7 @@
+/*
+* Copyright 2020 Axel Waggershauser
+*/
+// SPDX-License-Identifier: Apache-2.0
 use crate::{
     Point,
     common::{

src/common/cpp_essentials/dm_regression_line.rs

@@ -1,3 +1,10 @@
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+* Copyright 2017 Axel Waggershauser
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::common::Result;
 use crate::{Exceptions, Point};
 

src/common/cpp_essentials/edge_tracer.rs

@@ -1,3 +1,10 @@
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+* Copyright 2017 Axel Waggershauser
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use std::sync::{Arc, RwLock};
 
 use crate::{

src/common/cpp_essentials/fast_edge_to_edge_counter.rs

@@ -1,3 +1,8 @@
+/*
+* Copyright 2020 Axel Waggershauser
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::common::BitMatrix;
 
 use super::BitMatrixCursorTrait;

src/common/cpp_essentials/regression_line.rs

@@ -1,3 +1,8 @@
+/*
+* Copyright 2020 Axel Waggershauser
+*/
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::common::Result;
 use crate::{Exceptions, Point};
 

src/qrcode/cpp_port/bitmatrix_parser.rs

@@ -1,8 +1,9 @@
-// /*
-// * Copyright 2016 Nu-book Inc.
-// * Copyright 2016 ZXing authors
-// */
-// // SPDX-License-Identifier: Apache-2.0
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+* Copyright 2023 gitlost
+*/
+// SPDX-License-Identifier: Apache-2.0
 
 use crate::{
     Exceptions,