feat: add a "match_tags" option

README.md

@@ -22,6 +22,7 @@ A GitHub action to turn a GitHub project into a self-hosted Helm chart repo, usi
 - `skip_existing`: Skip package upload if release/tag already exists
 - `skip_upload`: This option, when populated, will skip the upload step. This allows you to do more advanced uploading of your charts (for exemple with OCI based repositories) which doen't require the `index.yaml`.
 - `mark_as_latest`: When you set this to `false`, it will mark the created GitHub release not as 'latest'.
+- `match_tags`: The glob to use to filter Git tags, usually used with the `CR_RELEASE_NAME_TEMPLATE` environment variable (default: all tags)
 - `packages_with_index`: When you set this to `true`, it will upload chart packages directly into publishing branch.
 - `pages_branch`: Name of the branch to be used to push the index and artifacts. (default to: gh-pages but it is not set in the action it is a default value for the chart-releaser binary)
 
@@ -57,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 

action.yml

@@ -49,6 +49,9 @@ inputs:
     description: Mark the created GitHub release as 'latest'
     required: false
     default: true
+  match_tags:
+    description: "The glob to use to filter Git tags (default: all tags)"
+    required: false
   packages_with_index:
     description: "Upload chart packages directly into publishing branch"
     required: false
@@ -112,6 +115,10 @@ runs:
             args+=(--mark-as-latest "${{ inputs.mark_as_latest }}")
         fi
 
+        if [[ -n "${{ inputs.match_tags }}" ]]; then
+            args+=(--match-tags "${{ inputs.match_tags }}")
+        fi
+
         if [[ -n "${{ inputs.packages_with_index }}" ]]; then
             args+=(--packages-with-index "${{ inputs.packages_with_index }}")
         fi

cr.sh

@@ -37,6 +37,7 @@ Usage: $(basename "$0") <options>
         --skip-existing           Skip package upload if release exists
         --skip-upload             Skip package upload, just create the release. Not needed in case of OCI upload.
     -l, --mark-as-latest          Mark the created GitHub release as 'latest' (default: true)
+    -m, --match-tags              The glob to use to filter Git tags (default: all tags)
         --packages-with-index     Upload chart packages directly into publishing branch
         --use-arm                 Use ARM64 binary (default: false)
 EOF
@@ -48,6 +49,7 @@ main() {
   local charts_dir=charts
   local owner=
   local repo=
+  local match_tags=
   local install_dir=
   local install_only=
   local skip_packaging=
@@ -179,6 +181,16 @@ parse_command_line() {
         shift
       fi
       ;;
+    -m|--match-tags)
+      if [[ -n "${2:-}" ]]; then
+        match_tags="$2"
+        shift
+      else
+        echo "ERROR: '--match-tags' cannot be empty." >&2
+        show_help
+        exit 1
+      fi
+      ;;
     -n | --install-dir)
       if [[ -n "${2:-}" ]]; then
         install_dir="$2"
@@ -285,7 +297,13 @@ install_chart_releaser() {
 lookup_latest_tag() {
   git fetch --tags >/dev/null 2>&1
 
-  if ! git describe --tags --abbrev=0 HEAD~ 2>/dev/null; then
+  args=("describe" "--tags" "--abbrev=0")
+  if [ -n "$match_tags" ]; then
+    args+=(--match="$match_tags")
+  fi
+  args+=(HEAD~)
+
+  if ! git "${args[@]}" 2> /dev/null; then
     git rev-list --max-parents=0 --first-parent HEAD
   fi
 }