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[maintenance] Add sorting_order.py script to update iw sorting order lists

Change-Id: I293992c418197622bbe902ea434e985846ba341e
---
A scripts/maintenance/sorting_order.py
1 file changed, 79 insertions(+), 0 deletions(-)

diff --git a/scripts/maintenance/sorting_order.py b/scripts/maintenance/sorting_order.py
new file mode 100644
index 0000000..58fc4b1
--- /dev/null
+++ b/scripts/maintenance/sorting_order.py
@@ -0,0 +1,79 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+"""Script that updates interwiki sorting order in family.py file."""
+#
+# (C) Pywikibot team, 2020
+#
+# Distributed under the terms of the MIT license.
+#
+import codecs
+import re
+
+import pywikibot
+
+from pywikibot.family import Family
+
+# MediaWiki page names for interwiki sorting order
+pages = {
+    'alphabetic':
+        'Interwiki config-sorting order-native-languagename',
+    'alphabetic_revised':
+        'Interwiki_config-sorting_order-native-languagename-firstword',
+}
+
+
+def update_family(list_name, page):
+    """Update family.py file."""
+    pywikibot.output('\nReading {} sorting order from\nfrom {}...'
+                     .format(list_name, page.title(with_ns=False)))
+
+    original = getattr(Family, list_name)
+    new = page.text.split()
+
+    # put the missing languages to the right place
+    missing = original != new and set(original) - set(new)
+    if missing:
+        pywikibot.warning("['{}'] not listed at meta."
+                          .format("', '".join(missing)))
+        index = {}
+        for code in missing:
+            index[original.index(code)] = code
+        i = len(index) - 1
+        for key in index:
+            new.insert(key - i, index[key])
+            i -= 1
+
+    if original == new:
+        pywikibot.output('The lists match!')
+        return
+
+    pywikibot.output("The lists don't match, the new list is:")
+    text = '    {} = [\n'.format(list_name)
+    line = ' ' * 7
+    for code in new:
+        if len(line) + len(code) >= 76:
+            text += line + '\n'
+            line = ' ' * 7
+        line += " '{}',".format(code)
+    text += line + '\n'
+    text += '    ]'
+    pywikibot.output(text)
+    family_file_name = 'pywikibot/family.py'
+    with codecs.open(family_file_name, 'r', 'utf8') as family_file:
+        family_text = family_file.read()
+    family_text = re.sub(r'(?msu)^ {4}%s.+?\]' % list_name,
+                         text, family_text, 1)
+    with codecs.open(family_file_name, 'w', 'utf8') as family_file:
+        family_file.write(family_text)
+
+
+def main():
+    """Main entry function."""
+    site = pywikibot.Site('meta', 'meta')
+    for list_name, page_name in pages.items():
+        page = pywikibot.Page(site, page_name, ns=site.namespaces.MEDIAWIKI)
+        update_family(list_name, page)
+
+
+if __name__ == '__main__':
+    main()

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