250 lines
6.9 KiB
Python
250 lines
6.9 KiB
Python
import sys
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import time
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import os
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import subprocess
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import shlex
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from fractions import Fraction
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from functools import reduce
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from optparse import Option
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import numpy as np
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class bcolors:
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"""
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ASCII Colors (Blender code).
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https://svn.blender.org/svnroot/bf-blender/trunk/blender/build_files/scons/tools/bcolors.py
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http://stackoverflow.com/questions/287871/print-in-terminal-with-colors-using-python
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"""
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HEADER = '\033[95m'
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OKBLUE = '\033[94m'
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OKGREEN = '\033[92m'
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WARNING = '\033[93m'
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FAIL = '\033[91m'
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ENDC = '\033[0m'
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BOLD = '\033[1m'
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DIM = '\033[2m'
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UNDERLINE = '\033[4m'
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CROSSOUT = '\033[9m'
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def disable(self):
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self.HEADER = ''
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self.OKBLUE = ''
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self.OKGREEN = ''
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self.WARNING = ''
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self.FAIL = ''
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self.ENDC = ''
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self.BOLD = ''
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self.UNDERLINE = ''
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self.CROSSOUT = ''
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def srepr(arg,glue = '\n'):
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r"""
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Join arguments as individual lines.
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Parameters
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----------
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arg : iterable
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Items to join.
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glue : str, optional
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Defaults to \n.
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"""
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if (not hasattr(arg, "strip") and
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(hasattr(arg, "__getitem__") or
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hasattr(arg, "__iter__"))):
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return glue.join(str(x) for x in arg)
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return arg if isinstance(arg,str) else repr(arg)
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def croak(what, newline = True):
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"""
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Write formated to stderr.
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Parameters
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----------
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what : str or iterable
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Content to be displayed
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newline : bool, optional
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Separate items of what by newline. Defaults to True.
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"""
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if not what:
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sys.stderr.write(srepr(what,glue = '\n') + ('\n' if newline else ''))
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sys.stderr.flush()
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def report(who = None,
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what = None):
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"""
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Reports script and file name.
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DEPRECATED
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"""
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croak( (emph(who)+': ' if who is not None else '') + (what if what is not None else '') + '\n' )
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def emph(what):
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"""Formats string with emphasis."""
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return bcolors.BOLD+srepr(what)+bcolors.ENDC
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def deemph(what):
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"""Formats string with deemphasis."""
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return bcolors.DIM+srepr(what)+bcolors.ENDC
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def delete(what):
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"""Formats string as deleted."""
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return bcolors.DIM+srepr(what)+bcolors.ENDC
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def strikeout(what):
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"""Formats string as strikeout."""
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return bcolors.CROSSOUT+srepr(what)+bcolors.ENDC
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def execute(cmd,
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streamIn = None,
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wd = './',
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env = None):
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"""
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Execute command.
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Parameters
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----------
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cmd : str
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Command to be executed.
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streanIn :, optional
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Input (via pipe) for executed process.
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wd : str, optional
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Working directory of process. Defaults to ./ .
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env :
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Environment
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"""
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initialPath = os.getcwd()
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os.chdir(wd)
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myEnv = os.environ if env is None else env
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process = subprocess.Popen(shlex.split(cmd),
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE,
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stdin = subprocess.PIPE,
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env = myEnv)
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out,error = [i for i in (process.communicate() if streamIn is None
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else process.communicate(streamIn.read().encode('utf-8')))]
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out = out.decode('utf-8').replace('\x08','')
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error = error.decode('utf-8').replace('\x08','')
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os.chdir(initialPath)
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if process.returncode != 0:
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raise RuntimeError('{} failed with returncode {}'.format(cmd,process.returncode))
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return out,error
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class extendableOption(Option):
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"""
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Used for definition of new option parser action 'extend', which enables to take multiple option arguments.
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Adopted from online tutorial http://docs.python.org/library/optparse.html
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DEPRECATED
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"""
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ACTIONS = Option.ACTIONS + ("extend",)
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STORE_ACTIONS = Option.STORE_ACTIONS + ("extend",)
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TYPED_ACTIONS = Option.TYPED_ACTIONS + ("extend",)
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ALWAYS_TYPED_ACTIONS = Option.ALWAYS_TYPED_ACTIONS + ("extend",)
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def take_action(self, action, dest, opt, value, values, parser):
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if action == "extend":
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lvalue = value.split(",")
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values.ensure_value(dest, []).extend(lvalue)
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else:
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Option.take_action(self, action, dest, opt, value, values, parser)
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def progressBar(iteration, total, prefix='', bar_length=50):
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"""
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Call in a loop to create terminal progress bar.
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From https://gist.github.com/aubricus/f91fb55dc6ba5557fbab06119420dd6a
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Parameters
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----------
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iteration : int
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Current iteration.
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total : int
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Total iterations.
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prefix : str, optional
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Prefix string.
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bar_length : int, optional
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Character length of bar. Defaults to 50.
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"""
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fraction = iteration / float(total)
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if not hasattr(progressBar, "last_fraction"): # first call to function
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progressBar.start_time = time.time()
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progressBar.last_fraction = -1.0
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remaining_time = ' n/a'
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else:
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if fraction <= progressBar.last_fraction or iteration == 0: # reset: called within a new loop
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progressBar.start_time = time.time()
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progressBar.last_fraction = -1.0
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remaining_time = ' n/a'
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else:
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progressBar.last_fraction = fraction
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remainder = (total - iteration) * (time.time()-progressBar.start_time)/iteration
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remaining_time = '{: 3d}:'.format(int( remainder//3600)) + \
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'{:02d}:'.format(int((remainder//60)%60)) + \
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'{:02d}' .format(int( remainder %60))
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filled_length = int(round(bar_length * fraction))
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bar = '█' * filled_length + '░' * (bar_length - filled_length)
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sys.stderr.write('\r{} {} {}'.format(prefix, bar, remaining_time)),
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if iteration == total:
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sys.stderr.write('\n')
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sys.stderr.flush()
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def scale_to_coprime(v):
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"""Scale vector to co-prime (relatively prime) integers."""
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MAX_DENOMINATOR = 1000
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def get_square_denominator(x):
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"""Denominator of the square of a number."""
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return Fraction(x ** 2).limit_denominator(MAX_DENOMINATOR).denominator
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def lcm(a, b):
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"""Least common multiple."""
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return a * b // np.gcd(a, b)
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denominators = [int(get_square_denominator(i)) for i in v]
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s = reduce(lcm, denominators) ** 0.5
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m = (np.array(v)*s).astype(np.int)
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return m//reduce(np.gcd,m)
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class return_message():
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"""Object with formatted return message."""
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def __init__(self,message):
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"""
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Sets return message.
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Parameters
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----------
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message : str or list of str
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message for output to screen
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"""
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self.message = message
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def __repr__(self):
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"""Return message suitable for interactive shells."""
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return srepr(self.message)
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