feat: expose slug variables for github.event.ref

Dockerfile

@@ -1,8 +1,4 @@
-# Container image that runs your code
 FROM alpine:3.10
-
-# Copies your code file from your action repository to the filesystem path `/` of the container
+RUN apk add --no-cache jq
 COPY entrypoint.sh /entrypoint.sh
-
-# Code file to execute when the docker container starts up (`entrypoint.sh`)
 ENTRYPOINT ["/entrypoint.sh"]

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Romain Lespinasse
+Copyright (c) 2019-2020 Romain Lespinasse
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,6 +1,6 @@
 # GitHub Slug action
 
-[![Actions Status](https://github.com/rlespinasse/github-slug-action/workflows/Build/badge.svg)](https://github.com/rlespinasse/github-slug-action/actions)
+[![Actions Status][1]][2]
 
 This action slug and expose some github variables.
 
@@ -25,20 +25,22 @@ Others `Slug`-ish commands are available:
 - name: Print slug/short variables
   run: |
     echo "Slug variables"
-    echo " - ${{ env.GITHUB_REF_SLUG }}"
-    echo " - ${{ env.GITHUB_HEAD_REF_SLUG }}"
-    echo " - ${{ env.GITHUB_BASE_REF_SLUG }}"
-    echo " - ${{ env.GITHUB_REPOSITORY_SLUG }}"
+    echo "   ref        : ${{ env.GITHUB_REF_SLUG }}"
+    echo "   head ref   : ${{ env.GITHUB_HEAD_REF_SLUG }}"
+    echo "   base ref   : ${{ env.GITHUB_BASE_REF_SLUG }}"
+    echo "   event ref  : ${{ env.GITHUB_EVENT_REF_SLUG }}"
+    echo "   repository : ${{ env.GITHUB_REPOSITORY_SLUG }}"
     echo "Slug URL variables"
-    echo " - ${{ env.GITHUB_REF_SLUG_URL }}"
-    echo " - ${{ env.GITHUB_HEAD_REF_SLUG_URL }}"
-    echo " - ${{ env.GITHUB_BASE_REF_SLUG_URL }}"
-    echo " - ${{ env.GITHUB_REPOSITORY_SLUG_URL }}"
+    echo "   ref        : ${{ env.GITHUB_REF_SLUG_URL }}"
+    echo "   head ref   : ${{ env.GITHUB_HEAD_REF_SLUG_URL }}"
+    echo "   base ref   : ${{ env.GITHUB_BASE_REF_SLUG_URL }}"
+    echo "   event ref  : ${{ env.GITHUB_EVENT_REF_SLUG_URL }}"
+    echo "   repository : ${{ env.GITHUB_REPOSITORY_SLUG_URL }}"
     echo "Short SHA variables"
-    echo " - ${{ env.GITHUB_SHA_SHORT }}"
+    echo "   sha        : ${{ env.GITHUB_SHA_SHORT }}"
 ```
 
-Read [default environment variables](https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables#default-environment-variables) page for more information.
+Read [default environment variables][3] page for more information.
 
 ### GITHUB_REF_SLUG / GITHUB_REF_SLUG_URL
 
@@ -48,7 +50,7 @@ The branch or tag ref that triggered the workflow.
 _If neither a branch or tag is available for the event type, the variable will not exist._
 
 | GITHUB_REF                     | GITHUB_REF_SLUG     | GITHUB_REF_SLUG_URL |
-|--------------------------------|---------------------|---------------------|
+| ------------------------------ | ------------------- | ------------------- |
 | refs/heads/master              | master              | master              |
 | refs/heads/feat/new_feature    | feat-new-feature    | feat-new-feature    |
 | refs/tags/v1.0.0               | v1.0.0              | v1-0-0              |
@@ -63,14 +65,18 @@ _Additional variables (only set for forked repositories) :_
 - `GITHUB_HEAD_REF_SLUG`/`GITHUB_HEAD_REF_SLUG_URL`, The branch of the head repository **GITHUB_HEAD_REF**
 - `GITHUB_BASE_REF_SLUG`/`GITHUB_BASE_REF_SLUG_URL`, The branch of the base repository **GITHUB_BASE_REF**
 
+_Additional variables (only set for [create][4], and [delete][5] webhook events with `ref` data) :_
+
+- `GITHUB_EVENT_REF_SLUG`/`GITHUB_EVENT_REF_SLUG_URL`, The git reference resource associated to the webhook.
+
 ### GITHUB_REPOSITORY_SLUG / GITHUB_REPOSITORY_SLUG_URL
 
 Slug the environment variable **GITHUB_REPOSITORY**
 
 The owner and repository name.
 
 | GITHUB_REPOSITORY          | GITHUB_REPOSITORY_SLUG     | GITHUB_REPOSITORY_SLUG_URL |
-|----------------------------|----------------------------|----------------------------|
+| -------------------------- | -------------------------- | -------------------------- |
 | octocat/Hello-World        | octocat-hello-world        | octocat-hello-world        |
 | rlespinasse/Hello-World.go | rlespinasse-hello-world.go | rlespinasse-hello-world-go |
 
@@ -84,15 +90,15 @@ Short the environment variable **GITHUB_SHA**
 The commit SHA that triggered the workflow
 
 | GITHUB_SHA                               | GITHUB_SHA_SHORT |
-|------------------------------------------|------------------|
+| ---------------------------------------- | ---------------- |
 | ffac537e6cbbf934b08745a378932722df287a53 | ffac537e         |
 
 ### Use slug variable in an URL
 
-In an URL, use `<GITHUB_VARIABLE>_SLUG_URL` instead of **<GITHUB_VARIABLE>_SLUG** as subdomain to be compliant.
+In an URL, use `<GITHUB_VARIABLE>_SLUG_URL` instead of **<GITHUB_VARIABLE>\_SLUG** as subdomain to be compliant.
 
 > **NOTE :**
-> <GITHUB_VARIABLE>_SLUG can be used in an URL only as part of the _resource path_.
+> <GITHUB*VARIABLE>\_SLUG can be used in an URL only as part of the \_resource path*.
 
 ```yaml
 - name: Inject slug/short variables
@@ -111,3 +117,9 @@ In an URL, use `<GITHUB_VARIABLE>_SLUG_URL` instead of **<GITHUB_VARIABLE>_SLUG*
 
 When using this action on Windows or Macos, this error is display `##[error]Container action is only supported on Linux`.
 Currently, this action don't support a system other than Linux due to Github Action Limitation.
+
+[1]: https://github.com/rlespinasse/github-slug-action/workflows/Build/badge.svg
+[2]: https://github.com/rlespinasse/github-slug-action/actions
+[3]: https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables#default-environment-variables
+[4]: https://docs.github.com/en/developers/webhooks-and-events/webhook-events-and-payloads#create
+[5]: https://docs.github.com/en/developers/webhooks-and-events/webhook-events-and-payloads#delete

entrypoint.sh

@@ -33,15 +33,23 @@ short_sha() {
     cut -c1-8
 }
 
+get_event_keyvalue() {
+  if [ -f "$GITHUB_EVENT_PATH" ]; then
+    jq -r ".$1" "$GITHUB_EVENT_PATH" | grep -v "null"
+  fi
+}
+
 echo ::set-env name=GITHUB_REPOSITORY_SLUG::"$(slug "$GITHUB_REPOSITORY")"
 echo ::set-env name=GITHUB_REPOSITORY_SLUG_URL::"$(slug_url "$GITHUB_REPOSITORY")"
 
 echo ::set-env name=GITHUB_REF_SLUG::"$(slug_ref "$GITHUB_REF")"
 echo ::set-env name=GITHUB_HEAD_REF_SLUG::"$(slug_ref "$GITHUB_HEAD_REF")"
 echo ::set-env name=GITHUB_BASE_REF_SLUG::"$(slug_ref "$GITHUB_BASE_REF")"
+echo ::set-env name=GITHUB_EVENT_REF_SLUG::"$(slug_ref "$(get_event_keyvalue "ref")")"
 
 echo ::set-env name=GITHUB_REF_SLUG_URL::"$(slug_url_ref "$GITHUB_REF")"
 echo ::set-env name=GITHUB_HEAD_REF_SLUG_URL::"$(slug_url_ref "$GITHUB_HEAD_REF")"
 echo ::set-env name=GITHUB_BASE_REF_SLUG_URL::"$(slug_url_ref "$GITHUB_BASE_REF")"
+echo ::set-env name=GITHUB_EVENT_REF_SLUG_URL::"$(slug_url_ref "$(get_event_keyvalue "ref")")"
 
 echo ::set-env name=GITHUB_SHA_SHORT::"$(short_sha "$GITHUB_SHA")"