action.yml

name: Setup GitHub CLI
description: Simple GitHub Action to add the GitHub CLI (gh) to your path
inputs:
  version:
    description: Version of gh
    default: 2.13.0
outputs:
  path:
    description: Absolute path to the gh binary
    value: ${{ steps.gh.outputs.path }}
runs:
  using: composite
  steps:
    - shell: bash
      id: gh
      run: |
        if ${{ runner.os == 'Linux' }}; then
            file_name=gh_${{ inputs.version }}_linux_amd64.tar.gz
            out_name=${file_name%.tar.gz}/bin/gh
            action_path_unix=${{ github.action_path }}
        elif ${{ runner.os == 'Windows' }}; then
            file_name=gh_${{ inputs.version }}_windows_amd64.zip
            out_name=bin/gh.exe
            action_path_unix=$(cygpath -u '${{ github.action_path }}')
            wget() { powershell -command "wget ${@}"; }
        elif ${{ runner.os == 'macOS' }}; then
            file_name=gh_${{ inputs.version }}_macOS_amd64.tar.gz
            out_name=${file_name%.tar.gz}/bin/gh
            action_path_unix=${{ github.action_path }}
        else
            echo "Unknown runner OS \"${{ runner.os }}\""
            exit 1
        fi
        mkdir ${action_path_unix}/gh
        cd ${action_path_unix}/gh
        wget \
          https://github.com/cli/cli/releases/download/v${{ inputs.version }}/${file_name} \
          -O ${file_name}
        if ${{ runner.os == 'Linux' || runner.os == 'macOS' }}; then
            tar xf ${file_name}
        else
            unzip ${file_name}
        fi
        echo ${action_path_unix}/gh/$(dirname ${out_name}) >> ${GITHUB_PATH}
        echo ::set-output name=path::'${{ github.action_path }}'/gh/${out_name}