Initial commit: Dabit Time Manager project

Python-based time management application with UDP discovery,
TCP protocol communication, time sync, and drift monitoring.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

utils/ip_format.py

@@ -0,0 +1,35 @@
+"""IP 주소 패딩/정규화 유틸리티"""
+
+
+def pad_ip(ip: str) -> str:
+    """IP 주소 각 옥텟을 3자리로 패딩.
+    예: '192.168.0.74' -> '192.168.000.074'
+    """
+    parts = ip.split(".")
+    padded = []
+    for part in parts:
+        part = part.strip()
+        padded.append(part.zfill(3)[:3])
+    return ".".join(padded)
+
+
+def normalize_ip(ip: str) -> str:
+    """패딩된 IP를 일반 형태로 변환.
+    예: '192.168.000.074' -> '192.168.0.74'
+    """
+    parts = ip.split(".")
+    return ".".join(str(int(p)) for p in parts)
+
+
+def sized_string(data: str, length: int, encoding: str = "euc-kr") -> str:
+    """문자열을 지정 바이트 길이로 맞춤 (공백 패딩). MS949/EUC-KR 한글 지원."""
+    result = ""
+    byte_count = 0
+    for ch in data:
+        ch_bytes = len(ch.encode(encoding, errors="replace"))
+        if byte_count + ch_bytes > length:
+            break
+        result += ch
+        byte_count += ch_bytes
+    result += " " * (length - byte_count)
+    return result