This action validates an XML files with a given XML schema using xmllint.

Required The name of the source (.xml) file.

Required The name of the schema (.xsd) file.

Optional The type of schema to use (schema, relaxng, schematron). Default is schema.

This basic example validates specified XML file specified using: xml-file using the schema file specified using: xml-schema-file.

name: Lint

on: [push]

jobs:
  xml-linters:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@master
    - name: Download schema
      run: wget https://apps.nextcloud.com/schema/apps/info.xsd
    - name: Lint info.xml
      uses: ChristophWurst/xmllint-action@v1
      with:
        xml-file: ./appinfo/info.xml
        xml-schema-file: ./info.xsd

To use an alternate schema format supported by xmllint (i.e. relaxng or schematron), you should specify the format of your schema using the optional xml-schema-type parameter.

This example does the same as the above example, in addition it configures the use of korelstar/xmllint-problem-matcher@v1, which matches any problems found by xmllint and present these as annotations with both errors and warnings emitted from xmllint, which are a nice alternative to digging through the log files.

name: Lint

on: [push]

jobs:
  xml-linters:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@master
    - name: Download schema
      run: wget https://apps.nextcloud.com/schema/apps/info.xsd
    - name: Lint info.xml
      uses: korelstar/xmllint-problem-matcher@v1
      uses: ChristophWurst/xmllint-action@v1
      with:
        xml-file: ./appinfo/info.xml
        xml-schema-file: ./info.xsd

• xmllint comes from libxml
• GitHub: korelstar/xmllint-problem-matcher