syntaxcheck.yml

name: Syntax check

on:
  push:
    paths:
      - '**.json'
      - '**.schema'
      - '**.yaml'

  pull_request:

jobs:
  syntaxcheck:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}

      - name: check valid json
        run: |
          echo "Checking valid json..."
          shopt -s globstar
          # check both json and schema file extensions
          ls **/*.json >/dev/null && for j in **/*.json; do python -mjson.tool "$j" > /dev/null || (echo "INVALID $j" >&2; 1>foo ); done
          ls **/*.schema >/dev/null && for j in **/*.schema; do python -mjson.tool "$j" > /dev/null || (echo "INVALID $j" >&2; 1>foo ); done
          [[ !  -f "foo" ]]

      - name: check valid yaml
        run: |
          echo "Checking valid yaml..." # even if no yaml is currently in repository
          shopt -s globstar
          ls **/*.yaml >/dev/null && for j in **/*.yaml; do python -c 'import yaml, sys; print(yaml.safe_load(sys.stdin))' <  $j > /dev/null || (echo "INVALID $j" >&2; 1>foo1 ); done
          [[ !  -f "foo1" ]]