Set up editorconfig and MegaLinter

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+max_line_length = 120
+trim_trailing_whitespace = true
+
+[*.yml]
+indent_size = 2
+
+[{Makefile,README,*.pl,*.sh,*.l,*.h}]
+indent_style = tab

.github/workflows/mega-linter.yml

@@ -0,0 +1,62 @@
+---
+# MegaLinter GitHub Action configuration file
+# More info at https://megalinter.io
+name: MegaLinter
+
+on:
+  # Trigger mega-linter at every push. Action will also be visible from Pull Requests to main
+  push: # Comment this line to trigger action only on pull-requests (not recommended if you don't pay for GH Actions)
+  pull_request:
+    branches: [master, main]
+
+# env: # Comment env block if you don't want to apply fixes
+  # Apply linter fixes configuration
+  # APPLY_FIXES: all # When active, APPLY_FIXES must also be defined as environment variable (in github/workflows/mega-linter.yml or other CI tool)
+  # APPLY_FIXES_EVENT: pull_request # Decide which event triggers application of fixes in a commit or a PR (pull_request, push, all)
+  # APPLY_FIXES_MODE: commit # If APPLY_FIXES is used, defines if the fixes are directly committed (commit) or posted in a PR (pull_request)
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  megalinter:
+    name: MegaLinter
+    runs-on: ubuntu-latest
+    # permissions:
+      # Give the default GITHUB_TOKEN write permission to commit and push, comment issues & post new PR
+      # Remove the ones you do not need
+      # contents: write
+      # issues: write
+      # pull-requests: write
+    steps:
+      # Git Checkout
+      - name: Checkout Code
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+          fetch-depth: 0 # If you use VALIDATE_ALL_CODEBASE = true, you can remove this line to improve performances
+
+      # MegaLinter
+      - name: MegaLinter
+        id: ml
+        # You can override MegaLinter flavor used to have faster performances
+        # More info at https://megalinter.io/flavors/
+        uses: oxsecurity/megalinter@v7
+        env:
+          # All available variables are described in documentation
+          # https://megalinter.io/configuration/
+          VALIDATE_ALL_CODEBASE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }} # Validates all source when push on main, else just the git diff with main. Override with true if you always want to lint all sources
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # ADD YOUR CUSTOM ENV VARIABLES HERE OR DEFINE THEM IN A FILE .mega-linter.yml AT THE ROOT OF YOUR REPOSITORY
+          # DISABLE: COPYPASTE,SPELL # Uncomment to disable copy-paste and spell checks
+
+      # Upload MegaLinter artifacts
+      - name: Archive production artifacts
+        if: success() || failure()
+        uses: actions/upload-artifact@v3
+        with:
+          name: MegaLinter reports
+          path: |
+            megalinter-reports
+            mega-linter.log

.mega-linter.yml

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+# ENABLE:
+#   - ACTION
+#   - EDITORCONFIG
+#   - REPOSITORY
+#   - YAML
+
+DISABLE:
+- C
+- CPP
+- SPELL
+
+DISABLE_ERRORS_LINTERS:
+  - MAKEFILE_CHECKMAKE
+  - REPOSITORY_CHECKOV
+  - REPOSITORY_KICS

Makefile

@@ -1,30 +1,30 @@
 # Copyright (c) 1986-2007 Purdue University
 # All rights reserved.
-# 
+#
 # Developed by:  Daniel Trinkle
 #                Department of Computer Science, Purdue University
 #                http://www.cs.purdue.edu/
-# 
+#
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
 # "Software"), to deal with 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:
-# 
+#
 # o Redistributions of source code must retain the above copyright
 #   notice, this list of conditions and the following disclaimers.
-# 
+#
 # o Redistributions in binary form must reproduce the above copyright
 #   notice, this list of conditions and the following disclaimers in the
 #   documentation and/or other materials provided with the distribution.
-# 
+#
 # o Neither the names of Daniel Trinkle, Purdue University, nor the
 #   names of its contributors may be used to endorse or promote products
 #   derived from this Software without specific prior written
 #   permission.
-# 
+#
 # 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.

detex.h

@@ -1,31 +1,31 @@
 /*
  * Copyright (c) 1986-2007 Purdue University
  * All rights reserved.
- * 
+ *
  * Developed by:  Daniel Trinkle
  *                Department of Computer Science, Purdue University
  *                http://www.cs.purdue.edu/
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
  * "Software"), to deal with 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:
- * 
+ *
  * o Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimers.
- * 
+ *
  * o Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimers in the
  *   documentation and/or other materials provided with the distribution.
- * 
+ *
  * o Neither the names of Daniel Trinkle, Purdue University, nor the
  *   names of its contributors may be used to endorse or promote products
  *   derived from this Software without specific prior written
  *   permission.
- * 
+ *
  * 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.