Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:xml_xpath_parse [2025/03/24 15:06] – créée - modification externe 127.0.0.1
+++ tech:xml_xpath_parse [2026/05/29 13:13] (Version actuelle) – Jean-Baptiste
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Brouillon}}
+# XML xpath parse
+Il existe deux langages de requêtes XML : **XPath** et **XQuery**.
+Voir aussi :
+* xml_grep (xml-twig-tools), xmldiff, [[https://en.wikipedia.org/wiki/XMLStarlet|xmlstarlet]]
+## Lint
+~~~bash
+xmllint --noout fic.xml
+~~~
+## xpath
+~~~bash
+virsh dumpxml VM1 |xpath -q -e "/domain/devices/disk[@type='file']/source/@file[1]"
+~~~
+## Ansible
+### Exemple
+`/etc/ImageMagick-6/policy.xml`
+~~~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
+~~~xml
+<policymap>
+  <policy domain="resource" name="time" value="5"/>
+</policymap>
+~~~
+Conf Ansible
+~~~yaml
+- 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"
+~~~