initial commit

.github/actions/check-go-license-boilerplate/action.yaml

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+name: Check Go license boilerplate
+description: Check license boilerplate used in Go files
+inputs:
+  boilerplate-path:
+    description: License boilerplate file path
+    required: true
+  boilerplate-content:
+    description: License boilerplate content
+    default: |-
+      /*
+      SPDX-FileCopyrightText: ${YEAR} SAP SE or an SAP affiliate company and ${REPOSITORY} contributors
+      SPDX-License-Identifier: Apache-2.0
+      */
+runs:
+  using: composite
+  steps:
+  - name: Check boilerplate file
+    shell: bash
+    env:
+      INPUT_BOILERPLATE_PATH: ${{ inputs.boilerplate-path }}
+      INPUT_BOILERPLATE_CONTENT: ${{ inputs.boilerplate-content }}
+    run: |
+      this_year=$(date +%Y)
+      last_year=$((this_year-1))
+      repository=$(echo $GITHUB_REPOSITORY | cut -d/ -f2)
+
+      tempdir=$(mktemp -d)
+      trap 'rm -rf $tempdir' EXIT
+
+      printenv INPUT_BOILERPLATE_CONTENT | YEAR=$this_year REPOSITORY=$repository envsubst > $tempdir/boilerplate-this-year
+      printenv INPUT_BOILERPLATE_CONTENT | YEAR=$last_year REPOSITORY=$repository envsubst > $tempdir/boilerplate-last-year
+
+      if diff -q $INPUT_BOILERPLATE_PATH $tempdir/boilerplate-this-year >/dev/null; then
+        exit 0
+      fi
+      if diff -q $INPUT_BOILERPLATE_PATH $tempdir/boilerplate-last-year >/dev/null; then
+        >&1 echo "Warning: license boilerplate outdated ($last_year); next year, this will result in an error."
+        exit 0
+      fi
+
+      >&1 echo "Error: incorrect license boilerplate."
+      exit 1

.github/actions/check-go-license-headers/action.yaml

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+name: Check Go license headers
+description: Check license headers of Go files
+inputs:
+  base-path:
+    description: Base directory
+    default: .
+  boilerplate-path:
+    description: License header file path
+    required: true
+runs:
+  using: composite
+  steps:
+  - name: Check files
+    shell: ruby {0}
+    env:
+      INPUT_BASE_PATH: ${{ inputs.base-path }}
+      INPUT_BOILERPLATE_PATH: ${{ inputs.boilerplate-path }}
+    run: |
+      base_path = ENV["INPUT_BASE_PATH"]
+      raise "Input parameter base-path must not start with slash" if base_path.start_with?("/")
+      raise "Input parameter base-path must not be empty" if base_path.empty?
+      raise "Specified base-path does not exist: #{base_path}" if !Dir.exists?(base_path)
+
+      boilerplate_path = ENV["INPUT_BOILERPLATE_PATH"]
+      raise "Input parameter boilerplate-path must not start with slash" if boilerplate_path.start_with?("/")
+      raise "Input parameter boilerplate-path must not be empty" if boilerplate_path.empty?
+
+      boilerplate = File.readlines(boilerplate_path)
+      errors = 0
+
+      Dir.glob("**/*.go").each do |p|
+        file = File.readlines(p)
+        file.each_with_index do |line,i|
+          next if line =~ /^\/\/go:build/
+          next if line =~ /^\/\/\s*\+build/
+          next if line =~ /^\s*$/
+          if file[i,boilerplate.size] != boilerplate then
+            STDERR.puts "#{p}: bad or missing license header"
+            errors += 1
+          end
+          break
+        end
+      end
+
+      exit 1 if errors > 0

.github/actions/get-highest-tag/.gitignore

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+.idea
+*.swp
+*.swo
+*~
+
+.DS_Store
+
+node_modules

.github/actions/get-highest-tag/Makefile

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+.PHONY: build
+build:
+	npm ci
+	ncc build src/index.js --license licenses.txt
+
+
+

.github/actions/get-highest-tag/action.yaml

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+name: Get highest tag
+description: Get highest semver tag in current repository
+inputs:
+  prefix:
+    description: Tag prefix (only tags with that prefix are considered)
+    default: ''
+outputs:
+  tag:
+    description: Highest tag (according to semver ordering)
+  version:
+    description: Highest version (i.e. determined highest tag, stripped by prefix)
+runs:
+  using: node16
+  main: dist/index.js