From f54689cf358d5368ed738306a414a3b020957296 Mon Sep 17 00:00:00 2001
From: Vincent Weevers <mail@vincentweevers.nl>
Date: Sun, 1 Nov 2020 22:58:02 +0100
Subject: [PATCH] Initial

---
 .github/workflows/release.yml | 10 +++++++++
 LICENSE                       | 19 +++++++++++++++++
 README.md                     | 39 +++++++++++++++++++++++++++++++++++
 action.yml                    |  5 +++++
 index.js                      | 28 +++++++++++++++++++++++++
 5 files changed, 101 insertions(+)
 create mode 100644 .github/workflows/release.yml
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 action.yml
 create mode 100644 index.js

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..8734d39
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,10 @@
+on:
+  push:
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d13cc4b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+The MIT License (MIT)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..10e8cfc
--- /dev/null
+++ b/README.md
@@ -0,0 +1,39 @@
+# additional-tags-action
+
+**A [GitHub Action](https://github.com/features/actions) to create major and minor git tags from the last tag.**
+
+![GitHub tag](https://img.shields.io/github/v/tag/vweevers/additional-tags-action?sort=semver)
+[![License](https://img.shields.io/github/license/vweevers/additional-tags-action)](LICENSE)
+
+## Usage
+
+```yaml
+on:
+  push:
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: vweevers/additional-tags-action@v1
+```
+
+If your tag is `v2.4.8` (for example) then this action will create 2 additional tags (`v2` and `v2.4`) and push them to GitHub, replacing existing tags. If the tag is a prerelease (not x.x.x) or not prefixed with `v` then nothing happens.
+
+## Why
+
+Useful to release actions. Consumers of your action can now pin to either a:
+
+- Major version (`uses: my-action@v2`)
+- Minor version (`uses: my-action@v2.4`)
+- Exact version (`uses: my-action@v2.4.8`)
+
+## Inputs
+
+None.
+
+## License
+
+[MIT](LICENSE)
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..66f46c9
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,5 @@
+name: Additional Tags
+description: Create major and minor git tags from the last tag
+runs:
+  using: node12
+  main: index.js
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..e5f88b0
--- /dev/null
+++ b/index.js
@@ -0,0 +1,28 @@
+'use strict'
+
+const { execFileSync } = require('child_process')
+
+try {
+  const maxBuffer = 1024 * 1024 * 16
+  const tags = execFileSync('git', ['tag'], { maxBuffer, encoding: 'utf8' })
+  const tag = tags.split(/\r?\n/).filter(Boolean).pop()
+
+  if (!tag) {
+    // Nothing to do
+  } else if (!/^v\d+\.\d+\.\d+$/.test(tag)) {
+    console.log('Skipping tag %s', tag)
+  } else {
+    const [major, minor] = tag.slice(1).split('.')
+    const majorTag = 'v' + major
+    const minorTag = 'v' + major + '.' + minor
+
+    execFileSync('git', ['config', 'user.name', 'github-actions'])
+    execFileSync('git', ['config', 'user.email', 'github-actions@github.com'])
+    execFileSync('git', ['tag', '-fa', majorTag, '-m', majorTag])
+    execFileSync('git', ['tag', '-fa', minorTag, '-m', minorTag])
+    execFileSync('git', ['push', '--tags', '-f'])
+  }
+} catch (err) {
+  console.log('::error::%s', err.message || String(err))
+  process.exit(1)
+}