colorcodes.py

import os
import subprocess

class Colorcodes(object):
    """
    Provides ANSI terminal color codes which are gathered via the ``tput``
    utility. That way, they are portable. Color codes are initialized to 
    empty strings.  If the output is being redirected or if there occurs 
    any error with ``tput``, keep empty strings.

    The provided fields are listed below.

    Control:

    - bold
    - reset

    Colors:

    - blue
    - green
    - orange
    - red

    :license: MIT
    """
    def __init__(self):
        # default to no colorizing
        self.bold = ""
        self.reset = ""

        self.blue = ""
        self.green = ""
        self.orange = ""
        self.red = ""

        # check if redirecting output (i.e. redirecting to a file)
        if os.fstat(0) != os.fstat(1): return

        # try colorizing
        try:
            self.bold = subprocess.check_output("tput bold".split())
            self.reset = subprocess.check_output("tput sgr0".split())
 
            self.blue = subprocess.check_output("tput setaf 4".split())
            self.green = subprocess.check_output("tput setaf 2".split())
            self.orange = subprocess.check_output("tput setaf 3".split())
            self.red = subprocess.check_output("tput setaf 1".split())
        except subprocess.CalledProcessError as e:
            pass

_c = Colorcodes()