Site: add tool to mark versioned-docs as "do not index"

site/bin/exclude_version_from_search.sh

@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+set -e
+set -o pipefail
+
+cd "$(dirname "$0")/.."
+
+if [[ ! -d content/releases ]] ; then
+  echo "Directory content/releases does not exists, run bin/checkout-releases.sh first."
+  exit 1
+fi
+
+versions=()
+while [[ $# -ge 1 ]]; do
+  arg="$1"
+  shift
+  case "$arg" in
+  -*)
+    ;;
+  *)
+    versions+=("$arg")
+  esac
+done
+
+for version in "${versions[@]}"; do
+  echo ""
+  echo "Marking all $version docs files to not be indexed..."
+  while IFS= read -r file; do
+    echo " .. processing file ${file}"
+    readarray -t all_lines < "${file}"
+    if [[ ${all_lines[0]} == "---" ]]; then
+      echo "   .. has front matter"
+      end_index=1
+      while [[ ${all_lines[$end_index]} != "---" ]]; do
+        end_index=$((end_index+1))
+      done
+
+      front_matter=("${all_lines[@]:1:$((end_index-1))}")
+      updated=0
+      if ! printf '%s\n' "${front_matter[@]}" | grep -qE '^robots: ' ; then
+        front_matter+=('robots: noindex')
+        updated=1
+      fi
+      if ! printf '%s\n' "${front_matter[@]}" | grep -qE '^exclude_search: ' ; then
+        front_matter+=('exclude_search: true')
+        updated=1
+      fi
+      if [[ $updated == 1 ]]; then
+        echo "    .. updating (${#front_matter[@]} lines)"
+        (
+          echo "---"
+          printf '%s\n' "${front_matter[@]}"
+          printf '%s\n' "${all_lines[@]:$end_index:${#all_lines[@]}}"
+        ) > "${file}.tmp"
+        rm "${file}"
+        mv "${file}.tmp" "${file}"
+      fi
+    else
+      echo "   .. NO front matter in file"
+    fi
+  done < <(find "content/releases/$version" -name "*.md")
+done