1 files changed, 58 insertions, 0 deletions
diff --git a/removeNullCharacters.py b/removeNullCharacters.py
new file mode 100644
index 0000000..758d03d
--- /dev/null
+++ b/removeNullCharacters.py
@@ -0,0 +1,58 @@
+import glob
+import os
+import re
+from datetime import datetime, timedelta, timezone
+
+JST = timezone(timedelta(hours=9))
+
+
+def fix_lastupdated_date(content):
+    """最終更新日のUTC表記をJSTに補正する"""
+    # <time datetime="2026-06-13T16:57:17.000Z">2026/06/13</time> を検出
+    pattern = r'(最終更新日: <time datetime=")([^"]+)(">)([^<]+)(</time>)'
+    match = re.search(pattern, content)
+    if not match:
+        return content
+
+    prefix = match.group(1)
+    iso_str = match.group(2)
+    middle = match.group(3)
+    display_text = match.group(4)
+    suffix = match.group(5)
+
+    utc_dt = datetime.fromisoformat(iso_str.replace("Z", "+00:00"))
+    jst_dt = utc_dt.astimezone(JST)
+
+    new_iso = jst_dt.strftime("%Y-%m-%dT%H:%M:%S.000Z").replace("Z", f"+09:00")
+    new_display = jst_dt.strftime("%Y/%m/%d %H:%M")
+
+    return content.replace(
+        match.group(0), prefix + new_iso + middle + new_display + suffix
+    )
+
+
+def remove_null_characters_from_html(directory, ignore_files=[], ignore_directories=[]):
+    html_files = glob.glob(os.path.join(directory, "**/*.html"), recursive=True)
+
+    for file_path in html_files:
+        if (
+            os.path.basename(file_path) in ignore_files
+            or os.path.dirname(file_path) in ignore_directories
+        ):
+            continue
+
+        with open(file_path, "r", encoding="utf-8") as file:
+            content = file.read()
+
+        content = content.replace("\0", "")
+        content = fix_lastupdated_date(content)
+
+        with open(file_path, "w", encoding="utf-8") as file:
+            file.write(content)
+
+
+if __name__ == "__main__":
+    target_directory = "./dist"
+    ignore_files = ["404.html"]
+    ignore_directories = ["assets", "img"]
+    remove_null_characters_from_html(target_directory, ignore_files, ignore_directories)