tools (xml_tools): domish.Element pretty formatting functions:

- `pFmtElt`: pretty format a `domish.Element`
- `ppElt`: use the above function to pretty print a `domish.Element`

sat/tools/xml_tools.py

@@ -1812,3 +1812,27 @@ def findAll(elt, namespaces=None, names=None):
             yield child
         for found in findAll(child, namespaces, names):
             yield found
+
+
+def pFmtElt(elt, indent=0):
+    """Pretty format a domish.Element"""
+    strings = []
+    for child in elt.children:
+        if domish.IElement.providedBy(child):
+            strings.append(pFmtElt(child, indent+2))
+        else:
+            strings.append(f"{(indent+2)*' '}{child!s}")
+    if elt.children:
+        nochild_elt = domish.Element(
+            (elt.uri, elt.name), elt.defaultUri, elt.attribs, elt.localPrefixes
+        )
+        strings.insert(0, f"{indent*' '}{nochild_elt.toXml()[:-2]}>")
+        strings.append(f"{indent*' '}</{nochild_elt.name}>")
+    else:
+        strings.append(f"{indent*' '}{elt.toXml()}")
+    return '\n'.join(strings)
+
+
+def ppElt(elt):
+    """Pretty print a domish.Element"""
+    print(pFmtElt(elt))