[YoutubeDL] format spec: Do not fail when a filter gives an empty result

[youtube-dl.git] / youtube_dl / compat.py

diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py
index e989cdbbd180abf4543726e86d088cd45225bfca..bc218dd719074204b3e94e7ec124f02914b28f51 100644 (file)
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@@ -1,9 +1,11 @@
 from __future__ import unicode_literals
 
+import collections
 import getpass
 import optparse
 import os
 import re
+import shutil
 import socket
 import subprocess
 import sys
@@ -44,11 +46,6 @@ try:
 except ImportError:  # Python 2
     import htmlentitydefs as compat_html_entities
 
-try:
-    import html.parser as compat_html_parser
-except ImportError:  # Python 2
-    import HTMLParser as compat_html_parser
-
 try:
     import http.client as compat_http_client
 except ImportError:  # Python 2
@@ -364,6 +361,37 @@ def workaround_optparse_bug9161():
             return real_add_option(self, *bargs, **bkwargs)
         optparse.OptionGroup.add_option = _compat_add_option
 
+if hasattr(shutil, 'get_terminal_size'):  # Python >= 3.3
+    compat_get_terminal_size = shutil.get_terminal_size
+else:
+    _terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines'])
+
+    def compat_get_terminal_size():
+        columns = compat_getenv('COLUMNS', None)
+        if columns:
+            columns = int(columns)
+        else:
+            columns = None
+        lines = compat_getenv('LINES', None)
+        if lines:
+            lines = int(lines)
+        else:
+            lines = None
+
+        try:
+            sp = subprocess.Popen(
+                ['stty', 'size'],
+                stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            out, err = sp.communicate()
+            lines, columns = map(int, out.split())
+        except Exception:
+            pass
+        return _terminal_size(columns, lines)
+
+if sys.version_info >= (3, 0):
+    from tokenize import tokenize as compat_tokenize_tokenize
+else:
+    from tokenize import generate_tokens as compat_tokenize_tokenize
 
 __all__ = [
     'compat_HTTPError',
@@ -371,10 +399,10 @@ __all__ = [
     'compat_chr',
     'compat_cookiejar',
     'compat_expanduser',
+    'compat_get_terminal_size',
     'compat_getenv',
     'compat_getpass',
     'compat_html_entities',
-    'compat_html_parser',
     'compat_http_client',
     'compat_http_server',
     'compat_kwargs',
@@ -384,6 +412,7 @@ __all__ = [
     'compat_socket_create_connection',
     'compat_str',
     'compat_subprocess_get_DEVNULL',
+    'compat_tokenize_tokenize',
     'compat_urllib_error',
     'compat_urllib_parse',
     'compat_urllib_parse_unquote',