[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
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5495937f46
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1 changed files with 15 additions and 9 deletions
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@ -416,7 +416,7 @@ if hasattr(shutil, 'get_terminal_size'): # Python >= 3.3
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else:
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else:
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_terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines'])
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_terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines'])
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def compat_get_terminal_size():
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def compat_get_terminal_size(fallback=(80, 24)):
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columns = compat_getenv('COLUMNS', None)
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columns = compat_getenv('COLUMNS', None)
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if columns:
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if columns:
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columns = int(columns)
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columns = int(columns)
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@ -428,14 +428,20 @@ else:
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else:
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else:
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lines = None
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lines = None
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if columns <= 0 or lines <= 0:
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try:
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try:
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sp = subprocess.Popen(
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sp = subprocess.Popen(
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['stty', 'size'],
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['stty', 'size'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = sp.communicate()
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out, err = sp.communicate()
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lines, columns = map(int, out.split())
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_columns, _lines = map(int, out.split())
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except Exception:
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except Exception:
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pass
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_columns, _lines = _terminal_size(*fallback)
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if columns <= 0:
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columns = _columns
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if lines <= 0:
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lines = _lines
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return _terminal_size(columns, lines)
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return _terminal_size(columns, lines)
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try:
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try:
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