From 96a4492e6706b9802aec9744db247395f1bf0cbd Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Mon, 16 Jun 2025 21:09:31 -0500
Subject: fix linkable rules and support nesting

---
 scripts/prepare_html_rules.py | 29 +++++++----------------------
 1 file changed, 7 insertions(+), 22 deletions(-)

(limited to 'scripts/prepare_html_rules.py')

diff --git a/scripts/prepare_html_rules.py b/scripts/prepare_html_rules.py
index aca29932..d2131b2a 100755
--- a/scripts/prepare_html_rules.py
+++ b/scripts/prepare_html_rules.py
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 """Add ids to all rules based on their headline"""
-# TODO: support nested lists
 
 import sys
 import re
@@ -9,21 +8,6 @@ HEADER_RE = re.compile(r'<h\d')
 DATA_NUMBER_RE = re.compile(r'data\-number="([^"]*)"')
 
 
-def add_ids(ol):
-    """add ids to all li"""
-    _id = ""
-    for s in ol.previous_siblings:
-        if not s.name:
-            continue
-        if s.name.startswith("h"):
-            _id = s.attrs["data-number"]
-            break
-
-    for i, li in enumerate(ol.find_all("li")):
-        li["id"] = f"{_id}-{i+1}"
-        li["class"] = "rule"
-
-
 def extract_headline_nr(line: str) -> str:
     """Extract the headline's number from it's data-number attribute"""
     m = DATA_NUMBER_RE.search(line)
@@ -36,19 +20,20 @@ def extract_headline_nr(line: str) -> str:
 def main():
     """Add ids to all ordered lists in the input"""
     headline = ""
-    i = 0
+    items = []
     for line in sys.stdin.readlines():
         if HEADER_RE.match(line):
             headline = extract_headline_nr(line)
             h_idx = line.find('<h') + 3
             line = line[:h_idx] + ' class="rule"' + line[h_idx:]
         if '<ol' in line and headline:
-            i = 1
-        if '<li' in line and i:
-            line = line.replace('<li', f'<li id="{headline}-{i}" class="rule"')
-            i = i + 1
+            items.append(1)
+        if '<li' in line and items:
+            p = ".".join([str(i) for i in items])
+            line = line.replace('<li', f'<li id="{headline}.{p}" class="rule"')
+            items[-1] += 1
         if '</ol' in line:
-            i = 0
+            items.pop(-1)
         print(line, end="")
 
 
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