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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2019 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Manage sparklines for Glances output."""
from __future__ import unicode_literals
from __future__ import division
import sys
from math import modf
from glances.logger import logger
from glances.compat import nativestr
sparklines_module = True
try:
from sparklines import sparklines
except ImportError as e:
logger.warning("Sparklines module not found ({})".format(e))
sparklines_module = False
try:
'┌┬┐╔╦╗╒╤╕╓╥╖│║─═├┼┤╠╬╣╞╪╡╟╫╢└┴┘╚╩╝╘╧╛╙╨╜'.encode(sys.stdout.encoding)
except (UnicodeEncodeError, TypeError):
logger.warning("UTF-8 is mandatory for sparklines ({})".format(e))
sparklines_module = False
class Sparkline(object):
r"""Manage sparklines (see https://pypi.org/project/sparklines/)."""
def __init__(self, size, pre_char='[', post_char=']', empty_char=' ', with_text=True):
# If the sparklines python module available ?
self.__available = sparklines_module
# Sparkline size
self.__size = size
# Sparkline current percents list
self.__percent = []
# Char used for the decoration
self.__pre_char = pre_char
self.__post_char = post_char
self.__empty_char = empty_char
self.__with_text = with_text
@property
def available(self):
return self.__available
@property
def size(self, with_decoration=False):
# Return the sparkine size, with or without decoration
if with_decoration:
return self.__size
if self.__with_text:
return self.__size - 6
@property
def percents(self):
return self.__percent
@percents.setter
def percents(self, value):
self.__percent = value
@property
def pre_char(self):
return self.__pre_char
@property
def post_char(self):
return self.__post_char
def get(self):
"""Return the sparkline."""
ret = sparklines(self.percents)[0]
if self.__with_text:
percents_without_none = [x for x in self.percents if x is not None]
if len(percents_without_none) > 0:
ret = '{}{:5.1f}%'.format(ret, percents_without_none[-1])
return nativestr(ret)
def __str__(self):
"""Return the sparkline."""
return self.get()
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