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[compat] Allow overriding by only COLUMNS or LINES in compat_get_terminal_size 

Now the semantic of this function is identical to
shutil.get_terminal_size() in Python 3.3+. The new behavior also
corresponds to the old get_term_width(), which is removed in
003c69a84b
This commit is contained in:
Yen Chi Hsuan 2015-09-13 20:04:27 +08:00 committed by Jaime Marquínez Ferrándiz
parent 5495937f46
commit 13118a50b8
1 changed files with 15 additions and 9 deletions
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12
youtube_dl/compat.py
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@ -416,7 +416,7 @@ if hasattr(shutil, 'get_terminal_size'): # Python >= 3.3
else: else:
_terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines']) _terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines'])
def compat_get_terminal_size(): def compat_get_terminal_size(fallback=(80, 24)):
columns = compat_getenv('COLUMNS', None) columns = compat_getenv('COLUMNS', None)
if columns: if columns:
columns = int(columns) columns = int(columns)
@ -428,14 +428,20 @@ else:
else: else:
lines = None lines = None
if columns <= 0 or lines <= 0:
try: try:
sp = subprocess.Popen( sp = subprocess.Popen(
['stty', 'size'], ['stty', 'size'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = sp.communicate() out, err = sp.communicate()
lines, columns = map(int, out.split()) _columns, _lines = map(int, out.split())
except Exception: except Exception:
pass _columns, _lines = _terminal_size(*fallback)
if columns <= 0:
columns = _columns
if lines <= 0:
lines = _lines
return _terminal_size(columns, lines) return _terminal_size(columns, lines)
try: try: