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Get previous tag

Continuous Integration GitHub release (latest SemVer)

GitHub Action that gets the latest tag from Git

Example output showing this action in action

Input

By default, this action will fail if no tag can be found, however, it accepts a fallback tag that will be used when no tag can be found. Keep in mind that when this action is used in a workflow that has no .git directory, it will still fail, and the fallback tag isn't used.

It is also accepts a prefix string to query the tags based on it.

  • fallback: 1.0.0
  • prefix: tag-prefix

Output

This action has two outputs, tag for the found tag, or the fallback. And, timestamp as a UNIX Epoch timestmap for when the tag was created, or when no tag is found, and a fallback tag has be specific is provides the timestamp of action execution.

  • tag: 1.2.3
  • timestamp: 123

Example

Find more examples in the examples directory.

The following example works together with the WyriHaximus/github-action-next-semvers and WyriHaximus/github-action-create-milestone actions. Where it provides the previous tag from that action so it can supply a set of versions for the next action, which creates a new milestone. (This snippet has been taken from the automatic code generation of wyrihaximus/fake-php-version.)

name: Generate
jobs:
  generate:
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0 # Required due to the way Git works, without it this action won't be able to find any or the correct tags
      - name: 'Get Previous tag'
        id: previoustag
        uses: "WyriHaximus/github-action-get-previous-tag@v1"
        with:
          fallback: 1.0.0 # Optional fallback tag to use when no tag can be found
      - name: 'Get next minor version'
        id: semvers
        uses: "WyriHaximus/github-action-next-semvers@v1"
        with:
          version: ${{ steps.previoustag.outputs.tag }}
      - name: 'Create new milestone'
        id: createmilestone
        uses: "WyriHaximus/github-action-create-milestone@v1"
        with:
          title: ${{ steps.semvers.outputs.patch }}
        env:
          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

License

Copyright 2021 Cees-Jan Kiewiet

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.