README.md

Python logging class

logging.py

#!/usr/bin/env python3

# Python 3 print function
from __future__ import print_function
from inspect import stack, getframeinfo
import os
import sys
import inspect
import functools
import traceback

class Logging:

    def __init__(self):
        self.console_colors = {
            'BLACK'     : '\033[90m',
            'RED'       : '\033[91m',
            'GREEN'     : '\033[92m',
            'YELLOW'    : '\033[93m',
            'BLUE'      : '\033[94m',
            'MAGENTA'   : '\033[95m',
            'CYAN'      : '\033[96m',
            'WHITE'     : '\033[97m',
            'BOLD'      : '\033[1m',
            'FAINT'     : '\033[2m',
            'ITALIC'    : '\033[3m',
            'UNDERLINE' : '\033[4m',
            'BLINK'     : '\033[5m',
            'NEGATIVE'  : '\033[7m',
            'STRIKEOUT' : '\033[9m',
            'DEFAULT'   : '\033[0m'
        }
        self.console_color_filters = {}

    def addLogFilter(self, f):
        p = f.split(':')
        if 1 < len(p):
            self.console_color_filters[p[0]] = p[1:]

    def addLogFilters(self, f):
        p = f.split(',')
        if p:
            for v in p:
                self.addLogFilter(v)

    def getLogFilters(self):
        return self.console_color_filters

    def __call__(self, *args):

        def formatStr(s):
            if isinstance(s, Exception):
                return str(" !!! EXCEPTION !!!\n" + traceback.format_exc())
            return str(s)

        # Concat args
        if 1 >= len(args):
            s = formatStr(*args)
        else:
            s = functools.reduce(lambda x ,y : formatStr(x) + ' ' + formatStr(y), args)

        # Show file/function/line
        fi = inspect.getframeinfo(inspect.stack()[1][0])
        s = os.path.basename(fi.filename) + ":" + fi.function + "(" + str(fi.lineno) + "): " + str(s)

        # Apply color filters
        beg = ''
        end = ''
        try:
            for k,v in self.console_color_filters.items():
                if 0 <= s.lower().find(k.lower()):
                    end = self.console_colors['DEFAULT']
                    for c in v:
                        c = c.upper()
                        if 'BLOCK' == c:
                            return
                        elif c in self.console_colors:
                            beg += self.console_colors[c]
        except Exception as e:
            print(e)
            beg = ''
            end = ''

        print(beg + s + end)
        sys.stdout.flush()

    def showStatus(s, max=70):
        print("\r" + s.ljust(max, ' '), end='')
        sys.stdout.flush()

Log = Logging()