check-i18n.yml

name: Check I18N

on:
  push:
    branches: [ "master" ]
  pull_request:
    branches: [ "master" ]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - name: Set up JDK 11
      uses: actions/setup-java@v3
      with:
        java-version: '11'
        distribution: 'temurin'
    - name: Install GNU gettext
      run: sudo apt update && sudo apt install -y gettext
    - name: Build with Gradle
      uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
      with:
        arguments: i18n
    - name: Check I18N
      # a Porcelain diff always has a line count of 21 for a change in the middle of a file, used here to know if only a single line is changed
      # and check that only the creation date is changed
      run: if [ $(git diff --word-diff=porcelain | wc -l) -ne 21 ] || ! git diff --word-diff=none | grep -- '-"POT-Creation-Date'; then exit -1; fi