| # 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 |
| import time |
| |
| try: |
| import threading as _threading |
| except ImportError: |
| import dummy_threading as _threading |
| |
| from repo_trace import IsTraceToStderr |
| |
| _NOT_TTY = not os.isatty(2) |
| |
| # This will erase all content in the current line (wherever the cursor is). |
| # It does not move the cursor, so this is usually followed by \r to move to |
| # column 0. |
| CSI_ERASE_LINE = "\x1b[2K" |
| |
| # This will erase all content in the current line after the cursor. This is |
| # useful for partial updates & progress messages as the terminal can display |
| # it better. |
| CSI_ERASE_LINE_AFTER = "\x1b[K" |
| |
| |
| def convert_to_hms(total): |
| """Converts a period of seconds to hours, minutes, and seconds.""" |
| hours, rem = divmod(total, 3600) |
| mins, secs = divmod(rem, 60) |
| return int(hours), int(mins), secs |
| |
| |
| def duration_str(total): |
| """A less noisy timedelta.__str__. |
| |
| The default timedelta stringification contains a lot of leading zeros and |
| uses microsecond resolution. This makes for noisy output. |
| """ |
| hours, mins, secs = convert_to_hms(total) |
| ret = "%.3fs" % (secs,) |
| if mins: |
| ret = "%im%s" % (mins, ret) |
| if hours: |
| ret = "%ih%s" % (hours, ret) |
| return ret |
| |
| |
| def elapsed_str(total): |
| """Returns seconds in the format [H:]MM:SS. |
| |
| Does not display a leading zero for minutes if under 10 minutes. This should |
| be used when displaying elapsed time in a progress indicator. |
| """ |
| hours, mins, secs = convert_to_hms(total) |
| ret = f"{int(secs):>02d}" |
| if total >= 3600: |
| # Show leading zeroes if over an hour. |
| ret = f"{mins:>02d}:{ret}" |
| else: |
| ret = f"{mins}:{ret}" |
| if hours: |
| ret = f"{hours}:{ret}" |
| return ret |
| |
| |
| def jobs_str(total): |
| return f"{total} job{'s' if total > 1 else ''}" |
| |
| |
| class Progress(object): |
| def __init__( |
| self, |
| title, |
| total=0, |
| units="", |
| delay=True, |
| quiet=False, |
| show_elapsed=False, |
| elide=False, |
| ): |
| self._title = title |
| self._total = total |
| self._done = 0 |
| self._start = time.time() |
| self._show = not delay |
| self._units = units |
| self._elide = elide |
| # Only show the active jobs section if we run more than one in parallel. |
| self._show_jobs = False |
| self._active = 0 |
| |
| # Save the last message for displaying on refresh. |
| self._last_msg = None |
| self._show_elapsed = show_elapsed |
| self._update_event = _threading.Event() |
| self._update_thread = _threading.Thread( |
| target=self._update_loop, |
| ) |
| self._update_thread.daemon = True |
| |
| # When quiet, never show any output. It's a bit hacky, but reusing the |
| # existing logic that delays initial output keeps the rest of the class |
| # clean. Basically we set the start time to years in the future. |
| if quiet: |
| self._show = False |
| self._start += 2**32 |
| elif show_elapsed: |
| self._update_thread.start() |
| |
| def _update_loop(self): |
| while True: |
| self.update(inc=0) |
| if self._update_event.wait(timeout=1): |
| return |
| |
| def _write(self, s): |
| s = "\r" + s |
| if self._elide: |
| col = os.get_terminal_size().columns |
| if len(s) > col: |
| s = s[: col - 1] + ".." |
| sys.stderr.write(s) |
| sys.stderr.flush() |
| |
| def start(self, name): |
| self._active += 1 |
| if not self._show_jobs: |
| self._show_jobs = self._active > 1 |
| self.update(inc=0, msg="started " + name) |
| |
| def finish(self, name): |
| self.update(msg="finished " + name) |
| self._active -= 1 |
| |
| def update(self, inc=1, msg=None): |
| """Updates the progress indicator. |
| |
| Args: |
| inc: The number of items completed. |
| msg: The message to display. If None, use the last message. |
| """ |
| self._done += inc |
| if msg is None: |
| msg = self._last_msg |
| self._last_msg = msg |
| |
| if _NOT_TTY or IsTraceToStderr(): |
| return |
| |
| elapsed_sec = time.time() - self._start |
| if not self._show: |
| if 0.5 <= elapsed_sec: |
| self._show = True |
| else: |
| return |
| |
| if self._total <= 0: |
| self._write( |
| "%s: %d,%s" % (self._title, self._done, CSI_ERASE_LINE_AFTER) |
| ) |
| else: |
| p = (100 * self._done) / self._total |
| if self._show_jobs: |
| jobs = f"[{jobs_str(self._active)}] " |
| else: |
| jobs = "" |
| if self._show_elapsed: |
| elapsed = f" {elapsed_str(elapsed_sec)} |" |
| else: |
| elapsed = "" |
| self._write( |
| "%s: %2d%% %s(%d%s/%d%s)%s %s%s" |
| % ( |
| self._title, |
| p, |
| jobs, |
| self._done, |
| self._units, |
| self._total, |
| self._units, |
| elapsed, |
| msg, |
| CSI_ERASE_LINE_AFTER, |
| ) |
| ) |
| |
| def end(self): |
| self._update_event.set() |
| if _NOT_TTY or IsTraceToStderr() or not self._show: |
| return |
| |
| duration = duration_str(time.time() - self._start) |
| if self._total <= 0: |
| self._write( |
| "%s: %d, done in %s%s\n" |
| % (self._title, self._done, duration, CSI_ERASE_LINE_AFTER) |
| ) |
| else: |
| p = (100 * self._done) / self._total |
| self._write( |
| "%s: %3d%% (%d%s/%d%s), done in %s%s\n" |
| % ( |
| self._title, |
| p, |
| self._done, |
| self._units, |
| self._total, |
| self._units, |
| duration, |
| CSI_ERASE_LINE_AFTER, |
| ) |
| ) |
