#275: Update copyright year and GHA to check year

.github/workflows/copyright_check.yml

@@ -0,0 +1,94 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2022-2024 Objectionary.com
+#
+# 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 NON-INFRINGEMENT. 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.
+---
+
+name: copyright
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  copyright:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run check
+        shell: bash
+        run: |
+          # Get the current year
+          current_year=$(date +"%Y")
+
+          # Ignore files and directories
+          ignore_files=("*/.git/*" "*/.github/workflows/copyright_check.yml"
+            "*/node_modules/*" "*/build/*" "*/dist/*" "*/temp/*")
+
+          # Directory to search
+          search_dir="."
+
+          # Pattern to look for: 'Copyright (c)'
+          pattern="Copyright (c)"
+
+          exit_code=0
+
+          # Find files containing the copyright notice
+          echo "Checking files in $search_dir for outdated copyright years..."
+          echo "Current year is $current_year."
+
+          # Iterate over files, redirecting into while loop to avoid subshell
+          find $search_dir -type f -print0 > tmp.$$ || exit 1
+          while IFS= read -r -d $'\0' file; do
+              # Skip files in the ignore list
+              skip_file=false
+              for ignore_pattern in "${ignore_files[@]}"; do
+                  if echo "$file" | grep -qE "$ignore_pattern"; then
+                      skip_file=true
+                      break
+                  fi
+              done
+              if $skip_file; then
+                  continue
+              fi
+
+              # Use grep to find the line and awk to extract the year
+              # If grep fails
+              if year_line=$(grep "$pattern" "$file"); then
+                if [[ -n "$year_line" ]]; then
+                    # Extract year assuming the year is after 'Copyright (c)'
+                    year=$(echo "$year_line" | grep -E -oh "[0-9]{4}-[0-9]{4}")
+                    year=$(echo "$year" | awk -F'-' '{print $2}')
+
+                    # Check if extracted year is not equal to the current year
+                    if [[ "$year" -ne "$current_year" ]]; then
+                        echo "Outdated copyright year ($year) in file: $file"
+                        exit_code=1
+                    fi
+                fi
+              fi
+          done < tmp.$$
+          rm tmp.$$  # Clean up temporary file
+
+          echo "Check complete."
+          exit $exit_code