fdf

cmdlet/merge_file.py

@@ -28,6 +28,9 @@ should_show_help = sh.should_show_help
 
 from SYS import pipeline as ctx
 
+_CHAPTER_TITLE_SPLIT_RE = _re.compile(r"^(?P<prefix>.+?)\s+-\s+(?P<chapter>.+)$")
+_FFMPEG_TIME_RE = _re.compile(r"time=(\d{2}):(\d{2}):(\d{2})\.(\d{2})")
+
 try:
     from pypdf import PdfWriter, PdfReader
 
@@ -611,13 +614,12 @@ def _merge_audio(files: List[Path], output: Path, output_format: str) -> bool:
         #   "Book Name - Chapter"
         # If *all* titles share the same "Book Name" prefix, strip it.
         if len(chapters) >= 2:
-            split_re = _re.compile(r"^(?P<prefix>.+?)\s+-\s+(?P<chapter>.+)$")
             prefixes: List[str] = []
             stripped_titles: List[str] = []
             all_match = True
             for ch in chapters:
                 raw_title = str(ch.get("title") or "").strip()
-                m = split_re.match(raw_title)
+                m = _CHAPTER_TITLE_SPLIT_RE.match(raw_title)
                 if not m:
                     all_match = False
                     break
@@ -721,7 +723,6 @@ def _merge_audio(files: List[Path], output: Path, output_format: str) -> bool:
             )
 
             # Monitor progress
-            duration_re = re.compile(r"time=(\d{2}):(\d{2}):(\d{2})\.(\d{2})")
             total_duration_sec = current_time_ms / 1000.0
 
             while True:
@@ -733,7 +734,7 @@ def _merge_audio(files: List[Path], output: Path, output_format: str) -> bool:
 
                     if line:
                         # Parse time=HH:MM:SS.mm
-                        match = duration_re.search(line)
+                        match = _FFMPEG_TIME_RE.search(line)
                         if match and total_duration_sec > 0:
                             h, m, s, cs = map(int, match.groups())
                             current_sec = h * 3600 + m * 60 + s + cs / 100.0