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*** added file 'bzrlib/progress.py'
--- /dev/null
+++ bzrlib/progress.py
@@ -0,0 +1,138 @@
+# Copyright (C) 2005 Aaron Bentley
+# <aaron.bentley@utoronto.ca>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+import sys
+import datetime
+
+class Progress(object):
+ def __init__(self, units, current, total=None):
+ self.units = units
+ self.current = current
+ self.total = total
+
+ def _get_percent(self):
+ if self.total is not None and self.current is not None:
+ return 100.0 * self.current / self.total
+
+ percent = property(_get_percent)
+
+ def __str__(self):
+ if self.total is not None:
+ return "%i of %i %s %.1f%%" % (self.current, self.total, self.units,
+ self.percent)
+ else:
+ return "%i %s" (self.current, self.units)
+
+class ProgressBar(object):
+ def __init__(self):
+ self.start = None
+ object.__init__(self)
+
+ def __call__(self, progress):
+ if self.start is None:
+ self.start = datetime.datetime.now()
+ progress_bar(progress, start_time=self.start)
+
+def divide_timedelta(delt, divisor):
+ """Divides a timedelta object"""
+ return datetime.timedelta(float(delt.days)/divisor,
+ float(delt.seconds)/divisor,
+ float(delt.microseconds)/divisor)
+
+def str_tdelta(delt):
+ if delt is None:
+ return "-:--:--"
+ return str(datetime.timedelta(delt.days, delt.seconds))
+
+def get_eta(start_time, progress, enough_samples=20):
+ if start_time is None or progress.current == 0:
+ return None
+ elif progress.current < enough_samples:
+ return None
+ elapsed = datetime.datetime.now() - start_time
+ total_duration = divide_timedelta((elapsed) * long(progress.total),
+ progress.current)
+ if elapsed < total_duration:
+ eta = total_duration - elapsed
+ else:
+ eta = total_duration - total_duration
+ return eta
+
+def progress_bar(progress, start_time=None):
+ eta = get_eta(start_time, progress)
+ if start_time is not None:
+ eta_str = " "+str_tdelta(eta)
+ else:
+ eta_str = ""
+
+ fmt = " %i of %i %s (%.1f%%)"
+ f = fmt % (progress.total, progress.total, progress.units, 100.0)
+ max = len(f)
+ cols = 77 - max
+ if start_time is not None:
+ cols -= len(eta_str)
+ markers = int (float(cols) * progress.current / progress.total)
+ txt = fmt % (progress.current, progress.total, progress.units,
+ progress.percent)
+ sys.stderr.write("\r[%s%s]%s%s" % ('='*markers, ' '*(cols-markers), txt,
+ eta_str))
+
+def clear_progress_bar():
+ sys.stderr.write('\r%s\r' % (' '*79))
+
+def spinner_str(progress, show_text=False):
+ """
+ Produces the string for a textual "spinner" progress indicator
+ :param progress: an object represinting current progress
+ :param show_text: If true, show progress text as well
+ :return: The spinner string
+
+ >>> spinner_str(Progress("baloons", 0))
+ '|'
+ >>> spinner_str(Progress("baloons", 5))
+ '/'
+ >>> spinner_str(Progress("baloons", 6), show_text=True)
+ '- 6 baloons'
+ """
+ positions = ('|', '/', '-', '\\')
+ text = positions[progress.current % 4]
+ if show_text:
+ text+=" %i %s" % (progress.current, progress.units)
+ return text
+
+def spinner(progress, show_text=False, output=sys.stderr):
+ """
+ Update a spinner progress indicator on an output
+ :param progress: The progress to display
+ :param show_text: If true, show text as well as spinner
+ :param output: The output to write to
+
+ >>> spinner(Progress("baloons", 6), show_text=True, output=sys.stdout)
+ \r- 6 baloons
+ """
+ output.write('\r%s' % spinner_str(progress, show_text))
+
+def run_tests():
+ import doctest
+ result = doctest.testmod()
+ if result[1] > 0:
+ if result[0] == 0:
+ print "All tests passed"
+ else:
+ print "No tests to run"
+if __name__ == "__main__":
+ run_tests()
|