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83 lines
2.2 KiB
Python
83 lines
2.2 KiB
Python
#
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# Copyright (C) 2009 The Android Open Source Project
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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 os
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import sys
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from time import time
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from trace import IsTrace
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_NOT_TTY = not os.isatty(2)
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class Progress(object):
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def __init__(self, title, total=0, units='', print_newline=False,
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always_print_percentage=False):
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self._title = title
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self._total = total
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self._done = 0
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self._lastp = -1
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self._start = time()
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self._show = False
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self._units = units
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self._print_newline = print_newline
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self._always_print_percentage = always_print_percentage
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def update(self, inc=1):
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self._done += inc
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if _NOT_TTY or IsTrace():
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return
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if not self._show:
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if 0.5 <= time() - self._start:
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self._show = True
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else:
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return
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if self._total <= 0:
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sys.stderr.write('\r%s: %d, ' % (
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self._title,
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self._done))
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sys.stderr.flush()
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else:
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p = (100 * self._done) / self._total
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if self._lastp != p or self._always_print_percentage:
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self._lastp = p
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sys.stderr.write('\r%s: %3d%% (%d%s/%d%s)%s' % (
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self._title,
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p,
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self._done, self._units,
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self._total, self._units,
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"\n" if self._print_newline else ""))
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sys.stderr.flush()
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def end(self):
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if _NOT_TTY or IsTrace() or not self._show:
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return
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if self._total <= 0:
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sys.stderr.write('\r%s: %d, done. \n' % (
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self._title,
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self._done))
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sys.stderr.flush()
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else:
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p = (100 * self._done) / self._total
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sys.stderr.write('\r%s: %3d%% (%d%s/%d%s), done. \n' % (
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self._title,
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p,
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self._done, self._units,
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self._total, self._units))
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sys.stderr.flush()
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