| # |
| # Copyright (C) 2009 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| import os |
| import sys |
| from time import time |
| from trace import IsTrace |
| |
| _NOT_TTY = not os.isatty(2) |
| |
| class Progress(object): |
| def __init__(self, title, total=0, units='', print_newline=False, |
| always_print_percentage=False): |
| self._title = title |
| self._total = total |
| self._done = 0 |
| self._lastp = -1 |
| self._start = time() |
| self._show = False |
| self._units = units |
| self._print_newline = print_newline |
| self._always_print_percentage = always_print_percentage |
| |
| def update(self, inc=1): |
| self._done += inc |
| |
| if _NOT_TTY or IsTrace(): |
| return |
| |
| if not self._show: |
| if 0.5 <= time() - self._start: |
| self._show = True |
| else: |
| return |
| |
| if self._total <= 0: |
| sys.stderr.write('\r%s: %d, ' % ( |
| self._title, |
| self._done)) |
| sys.stderr.flush() |
| else: |
| p = (100 * self._done) / self._total |
| |
| if self._lastp != p or self._always_print_percentage: |
| self._lastp = p |
| sys.stderr.write('\r%s: %3d%% (%d%s/%d%s)%s' % ( |
| self._title, |
| p, |
| self._done, self._units, |
| self._total, self._units, |
| "\n" if self._print_newline else "")) |
| sys.stderr.flush() |
| |
| def end(self): |
| if _NOT_TTY or IsTrace() or not self._show: |
| return |
| |
| if self._total <= 0: |
| sys.stderr.write('\r%s: %d, done. \n' % ( |
| self._title, |
| self._done)) |
| sys.stderr.flush() |
| else: |
| p = (100 * self._done) / self._total |
| sys.stderr.write('\r%s: %3d%% (%d%s/%d%s), done. \n' % ( |
| self._title, |
| p, |
| self._done, self._units, |
| self._total, self._units)) |
| sys.stderr.flush() |