mirror of
https://github.com/firebase/firebase-ios-sdk
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38 lines
1.0 KiB
Python
38 lines
1.0 KiB
Python
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# Copyright 2019 Google
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import subprocess
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import threading
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_lock = threading.Lock()
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_columns = None
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def columns():
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"""Returns the number of columns in the terminal's display."""
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global _columns
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with _lock:
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if _columns is None:
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_columns = _find_terminal_columns()
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return _columns
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def _find_terminal_columns():
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try:
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result = subprocess.check_output(['tput', 'cols'])
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return int(result.rstrip())
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except subprocess.CalledProcessError:
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return 80
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