[cleanup] Misc cleanup and refactor (#2173)

yt_dlp/downloader/common.py

@@ -1,3 +1,4 @@
+import contextlib
 import errno
 import os
 import random
@@ -12,6 +13,7 @@ from ..minicurses import (
 )
 from ..utils import (
     LockingUnsupportedError,
+    Namespace,
     decodeArgument,
     encodeFilename,
     error_to_compat_str,
@@ -70,12 +72,30 @@ class FileDownloader:
 
     def __init__(self, ydl, params):
         """Create a FileDownloader object with the given options."""
-        self.ydl = ydl
+        self._set_ydl(ydl)
         self._progress_hooks = []
         self.params = params
         self._prepare_multiline_status()
         self.add_progress_hook(self.report_progress)
 
+    def _set_ydl(self, ydl):
+        self.ydl = ydl
+
+        for func in (
+            'deprecation_warning',
+            'report_error',
+            'report_file_already_downloaded',
+            'report_warning',
+            'to_console_title',
+            'to_stderr',
+            'trouble',
+            'write_debug',
+        ):
+            setattr(self, func, getattr(ydl, func))
+
+    def to_screen(self, *args, **kargs):
+        self.ydl.to_screen(*args, quiet=self.params.get('quiet'), **kargs)
+
     @staticmethod
     def format_seconds(seconds):
         time = timetuple_from_msec(seconds * 1000)
@@ -157,27 +177,6 @@ class FileDownloader:
         multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
         return int(round(number * multiplier))
 
-    def to_screen(self, *args, **kargs):
-        self.ydl.to_screen(*args, quiet=self.params.get('quiet'), **kargs)
-
-    def to_stderr(self, message):
-        self.ydl.to_stderr(message)
-
-    def to_console_title(self, message):
-        self.ydl.to_console_title(message)
-
-    def trouble(self, *args, **kargs):
-        self.ydl.trouble(*args, **kargs)
-
-    def report_warning(self, *args, **kargs):
-        self.ydl.report_warning(*args, **kargs)
-
-    def report_error(self, *args, **kargs):
-        self.ydl.report_error(*args, **kargs)
-
-    def write_debug(self, *args, **kargs):
-        self.ydl.write_debug(*args, **kargs)
-
     def slow_down(self, start_time, now, byte_counter):
         """Sleep if the download speed is over the rate limit."""
         rate_limit = self.params.get('ratelimit')
@@ -263,10 +262,8 @@ class FileDownloader:
         # Ignore obviously invalid dates
         if filetime == 0:
             return
-        try:
+        with contextlib.suppress(Exception):
             os.utime(filename, (time.time(), filetime))
-        except Exception:
-            pass
         return filetime
 
     def report_destination(self, filename):
@@ -287,18 +284,18 @@ class FileDownloader:
     def _finish_multiline_status(self):
         self._multiline.end()
 
-    _progress_styles = {
-        'downloaded_bytes': 'light blue',
-        'percent': 'light blue',
-        'eta': 'yellow',
-        'speed': 'green',
-        'elapsed': 'bold white',
-        'total_bytes': '',
-        'total_bytes_estimate': '',
-    }
+    ProgressStyles = Namespace(
+        downloaded_bytes='light blue',
+        percent='light blue',
+        eta='yellow',
+        speed='green',
+        elapsed='bold white',
+        total_bytes='',
+        total_bytes_estimate='',
+    )
 
     def _report_progress_status(self, s, default_template):
-        for name, style in self._progress_styles.items():
+        for name, style in self.ProgressStyles._asdict().items():
             name = f'_{name}_str'
             if name not in s:
                 continue
@@ -391,10 +388,6 @@ class FileDownloader:
             '[download] Got server HTTP error: %s. Retrying (attempt %d of %s) ...'
             % (error_to_compat_str(err), count, self.format_retries(retries)))
 
-    def report_file_already_downloaded(self, *args, **kwargs):
-        """Report file has already been fully downloaded."""
-        return self.ydl.report_file_already_downloaded(*args, **kwargs)
-
     def report_unable_to_resume(self):
         """Report it was impossible to resume download."""
         self.to_screen('[download] Unable to resume')
@@ -433,25 +426,16 @@ class FileDownloader:
                 self._finish_multiline_status()
                 return True, False
 
-        if subtitle is False:
-            min_sleep_interval = self.params.get('sleep_interval')
-            if min_sleep_interval:
-                max_sleep_interval = self.params.get('max_sleep_interval', min_sleep_interval)
-                sleep_interval = random.uniform(min_sleep_interval, max_sleep_interval)
-                self.to_screen(
-                    '[download] Sleeping %s seconds ...' % (
-                        int(sleep_interval) if sleep_interval.is_integer()
-                        else '%.2f' % sleep_interval))
-                time.sleep(sleep_interval)
+        if subtitle:
+            sleep_interval = self.params.get('sleep_interval_subtitles') or 0
         else:
-            sleep_interval_sub = 0
-            if type(self.params.get('sleep_interval_subtitles')) is int:
-                sleep_interval_sub = self.params.get('sleep_interval_subtitles')
-            if sleep_interval_sub > 0:
-                self.to_screen(
-                    '[download] Sleeping %s seconds ...' % (
-                        sleep_interval_sub))
-                time.sleep(sleep_interval_sub)
+            min_sleep_interval = self.params.get('sleep_interval') or 0
+            sleep_interval = random.uniform(
+                min_sleep_interval, self.params.get('max_sleep_interval', min_sleep_interval))
+        if sleep_interval > 0:
+            self.to_screen(f'[download] Sleeping {sleep_interval:.2f} seconds ...')
+            time.sleep(sleep_interval)
+
         ret = self.real_download(filename, info_dict)
         self._finish_multiline_status()
         return ret, True