feat: add a "match_tags" option

README.md

@@ -20,6 +20,7 @@ A GitHub action to turn a GitHub project into a self-hosted Helm chart repo, usi
 - `charts_dir`: The charts directory
 - `skip_packaging`: This option, when populated, will skip the packaging step. This allows you to do more advanced packaging of your charts (for example, with the `helm package` command) before this action runs. This action will only handle the indexing and publishing steps.
 - `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)
 
 ### Outputs
 

action.yml

@@ -32,6 +32,9 @@ 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
 outputs:
   changed_charts:
     description: "A comma-separated list of charts that were released on this run. Will be an empty string if no updates were detected, will be unset if `--skip_packaging` is used: in the latter case your custom packaging step is responsible for setting its own outputs if you need them."
@@ -84,6 +87,10 @@ runs:
             args+=(--mark-as-latest "${{ inputs.mark_as_latest }}")
         fi
 
+        if [[ -n "${{ inputs.match_tags }}" ]]; then
+            args+=(--match-tags "${{ inputs.match_tags }}")
+        fi
+
         "$GITHUB_ACTION_PATH/cr.sh" "${args[@]}"
 
         if [[ -f changed_charts.txt ]]; then

cr.sh

@@ -35,6 +35,7 @@ Usage: $(basename "$0") <options>
     -s, --skip-packaging     Skip the packaging step (run your own packaging before using the releaser)
         --skip-existing      Skip package upload if release exists
     -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)
 EOF
 }
 
@@ -44,6 +45,7 @@ main() {
   local charts_dir=charts
   local owner=
   local repo=
+  local match_tags=
   local install_dir=
   local install_only=
   local skip_packaging=
@@ -164,6 +166,16 @@ parse_command_line() {
         exit 1
       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"
@@ -249,7 +261,13 @@ 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
 }