intel/genxml: Move sorting & writing into GenXml class

Rework:
 * Use "all" in is_equivalent_xml() (Dylan)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24605>

src/intel/genxml/gen_sort_tags.py

@@ -24,18 +24,14 @@ def main() -> None:
         if not args.quiet:
             print('Processing {}... '.format(filename), end='', flush=True)
 
-        xml = et.parse(filename)
-        original = copy.deepcopy(xml) if args.validate else xml
-        intel_genxml.sort_xml(xml)
+        genxml = intel_genxml.GenXml(filename)
 
         if args.validate:
-            for old, new in zip(original.getroot(), xml.getroot()):
-                assert intel_genxml.node_validator(old, new), f'{filename} is invalid, run gen_sort_tags.py and commit that'
+            assert genxml.is_equivalent_xml(genxml.sorted_copy()), \
+                f'{filename} is invalid, run gen_sort_tags.py and commit that'
         else:
-            tmp = filename.with_suffix(f'{filename.suffix}.tmp')
-            et.indent(xml, space='  ')
-            xml.write(tmp, encoding="utf-8", xml_declaration=True)
-            tmp.replace(filename)
+            genxml.sort()
+            genxml.write_file()
 
         if not args.quiet:
             print('done.')

src/intel/genxml/intel_genxml.py

@@ -168,7 +168,8 @@ def sort_xml(xml: et.ElementTree) -> None:
 
 class GenXml(object):
     def __init__(self, filename):
-        self.et = et.parse(filename)
+        self.filename = pathlib.Path(filename)
+        self.et = et.parse(self.filename)
 
     def filter_engines(self, engines):
         changed = False
@@ -187,3 +188,21 @@ class GenXml(object):
             items.append(item)
         if changed:
             self.et.getroot()[:] = items
+
+    def sort(self):
+        sort_xml(self.et)
+
+    def sorted_copy(self):
+        clone = copy.deepcopy(self)
+        clone.sort()
+        return clone
+
+    def is_equivalent_xml(self, other):
+        return all(node_validator(old, new)
+                   for old, new in zip(self.et.getroot(), other.et.getroot()))
+
+    def write_file(self):
+        tmp = self.filename.with_suffix(f'{self.filename.suffix}.tmp')
+        et.indent(self.et, space='  ')
+        self.et.write(tmp, encoding="utf-8", xml_declaration=True)
+        tmp.replace(self.filename)