Script to generate release commands for KRM functions (#1218)

* Script to generate release commands for KRM functions

Signed-off-by: liamfallon <liam.fallon@est.tech>

* Reset toset DCO

Signed-off-by: liamfallon <liam.fallon@est.tech>

* Update to addres review comments

Signed-off-by: liamfallon <liam.fallon@est.tech>

---------

Signed-off-by: liamfallon <liam.fallon@est.tech>

Author: liamfallon

scripts/release-krm-functions.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+
+# Copyright 2026 The kpt Authors
+#
+# Licensed 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.
+
+# This script generates the 'gh' commands to create the releases for KRM functions.
+# The single parameter filters the old releases list and bumps the patch version for
+# each KRM function on the list that matches the entered parameter.
+
+set -euo pipefail
+
+bump_patch() {
+  old_ver="$1"
+
+  # shellcheck disable=SC2001
+  ver_major_minor=$(echo "$old_ver" | sed 's/\.[0-9]*$//')
+  # shellcheck disable=SC2001
+  ver_patch_old=$(echo "$old_ver" | sed 's/^v[0-9]*\.[0-9]*\.//')
+  ver_patch_new=$((ver_patch_old+1))
+  echo "$ver_major_minor.$ver_patch_new"
+}
+
+upgrade_from() {
+  name="$1"
+  old_ver="$2"
+  tag="$3"
+
+  tag_prefix=$(echo "$tag" | sed 's/\/v[^/]*$//')
+  new_ver="$(bump_patch "$old_ver")"
+
+  release_tag="$tag_prefix/$new_ver"
+  safe_release_tag=$(printf '%q' "$release_tag")
+  title="$name $new_ver"
+  safe_title=$(printf '%q' "$title")
+
+  echo "gh release create $safe_release_tag --title $safe_title --generate-notes"
+}
+
+if [ -z "$1" ]
+then
+ echo "Usage: $0 pattern";
+ echo "  pattern: A pattern that filters the \"old\" revisions that we want to bump from"
+ exit 1
+fi
+
+# NOTE: This parsing assumes 'gh release list' outputs at least four space-separated columns.
+gh release list --limit 10000 | grep "$1" | sed 's/Latest//' | awk 'NF>=4 {printf("%s,%s,%s,%s\n", $1,$2,$3,$4)}' | \
+while read -r line
+do
+  IFS=',' read -r -a old_release <<< "$line"
+  if [ "${#old_release[@]}" -lt 4 ]; then
+    echo "Warning: unexpected format from 'gh release list', skipping line: $line" >&2
+    continue
+  fi
+  upgrade_from "${old_release[0]}" "${old_release[1]}" "${old_release[2]}"
+done