Introduce REUSE compliance

This commit introduces REUSE compliance by annotating all files
with SPDX information and placing the reused licences in the
LICENSES folder.

We additionally removed the docheader tool which is made obsolete
by this change.

The main LICENSE and copyright text of the project is now not under
my personal name anymore, and it belongs to "The Respect Project
Contributors" instead.

This change restores author names to several files, giving the
appropriate attribution for contributions.

Author: alganet

.docheader

@@ -84,9 +84,6 @@ jobs:
       - name: Install dependencies
         run: composer install --prefer-dist
 
-      - name: Run DocHeader
-        run: vendor/bin/docheader check library/ tests/
-
       - name: Run PHP_CodeSniffer
         run: vendor/bin/phpcs
 

.github/workflows/continuous-integration-code.yml

@@ -0,0 +1,28 @@
+name: REUSE
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - '*'
+
+jobs:
+  reuse-check:
+    name: Compliance Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: '3.x'
+
+      - name: Install REUSE tool
+        run: pip install reuse
+
+      - name: Run REUSE check
+        run: reuse lint

.github/workflows/reuse.yml

@@ -1,3 +1,8 @@
+<!--
+SPDX-FileCopyrightText: (c) Respect Project Contributors
+SPDX-License-Identifier: MIT
+-->
+
 # Changes in Respect\Validation 2.x
 
 ## 2.3

.github/workflows/update-regionals.yaml .github/workflows/update-regionals.yml.github/workflows/update-regionals.yaml renamed to .github/workflows/update-regionals.yml

@@ -1,3 +1,8 @@
+<!--
+SPDX-FileCopyrightText: (c) Respect Project Contributors
+SPDX-License-Identifier: MIT
+-->
+
 # Contributing
 
 Contributions to Respect\Validation are always welcome. You make our lives
@@ -54,8 +59,9 @@ and will natively have support for chaining and everything else.
 <?php
 
 /*
- * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
  * SPDX-License-Identifier: MIT
+ * SPDX-FileCopyrightText: (c) Respect Project Contributors
+ * SPDX-FileContributor Your Name <your_email@example.com>
  */
 
 declare(strict_types=1);
@@ -96,8 +102,9 @@ first item of the arrays:
 <?php
 
 /*
- * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
  * SPDX-License-Identifier: MIT
+ * SPDX-FileCopyrightText: (c) Respect Project Contributors
+ * SPDX-FileContributor Your Name <your_email@example.com>
  */
 
 declare(strict_types=1);

CHANGELOG.md

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
+Copyright (c) Respect Project Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

CONTRIBUTING.md

@@ -0,0 +1,18 @@
+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
+following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial
+portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.