XML xpath parse

Il existe deux langages de requêtes XML : XPath et XQuery.

Voir aussi :

xml_grep (xml-twig-tools), xmldiff, xmlstarlet

Lint

xmllint --noout fic.xml

xpath

virsh dumpxml VM1 |xpath -q -e "/domain/devices/disk[@type='file']/source/@file[1]"

Ansible

Exemple

/etc/ImageMagick-6/policy.xml

<policymap>
  <policy domain="resource" name="memory" value="256MiB"/>
  <policy domain="resource" name="map" value="512MiB"/>
  <policy domain="resource" name="width" value="16KP"/>
  <policy domain="resource" name="height" value="16KP"/>
  <policy domain="resource" name="area" value="128MB"/>
  <policy domain="resource" name="disk" value="1GiB"/>
  <!-- <policy domain="resource" name="time" value="3600"/> -->
  <policy domain="delegate" rights="none" pattern="URL" />
  <policy domain="delegate" rights="none" pattern="HTTPS" />
  <policy domain="delegate" rights="none" pattern="HTTP" />
  <policy domain="path" rights="none" pattern="@*"/>
</policymap>

Nous voulons ajouter

/etc/ImageMagick-6/policy.xml

<policymap>
  <policy domain="resource" name="time" value="5"/>
</policymap>

Conf Ansible

- name: install deps for ansible xml module
  apt: name='{{ packages }}'
  vars:
    packages:
      - python-lxml  # For Ansible xml
      - python3-lxml # For Ansible xml

- name: /etc/ImageMagick-6/policy.xml - change timeout
  xml:
    path: /tmp/policy.xml
    xpath: /policymap/policy[@domain='resource' and @name='time']
    attribute: value
    value: "5"