#!/usr/bin/env python
# coding=utf-8
#
# Copyright 2016 Ville Rantanen
#
# This program 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.
#
# 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 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/>.
#

'''Color by ${X} notation.'''

__author__ = "Ville Rantanen <ville.q.rantanen@gmail.com>"
__version__ = "0.1"

import sys,os,argparse,re
from argparse import ArgumentParser
sys.path.append(os.path.dirname(os.path.realpath(__file__)))
import ansi

def setup_options():
    ''' Create command line options '''
    usage='''
Color notation renderer in ANSI codes
Special syntaxes:
    * Colors: insert string ${X}, where X values in the table below.

''' + ansi.demo()

    parser=ArgumentParser(description=usage,
                          formatter_class=argparse.RawDescriptionHelpFormatter,
                          epilog=__author__)

    parser.add_argument("-v","--version",action="version",version=__version__)
    parser.add_argument("--no-color","-n",action="store_false",dest="color",default=True,
                     help="Disable color.")
    parser.add_argument("-z",action="store_true",dest="zero",default=False,
                     help="Reset coloring at the end of each line.")
    parser.add_argument("-Z",action="store_false",dest="zero_final",default=True,
                     help="Disable reset of colors at the end of file.")
    parser.add_argument("filename",type=str,
                     help="File to show, - for stdin")
    opts=parser.parse_args()
    return opts

bc=ansi.code()
opts=setup_options()
if opts.filename=="-":
    f=sys.stdin
else:
    f=open(opts.filename,'r')
for row in f:
    if not row:
        continue
    if type(row) == bytes:
        row = row.decode('utf-8')
    row=row.rstrip("\n\r ")
    if opts.color:
        colored=bc.color_string(row)
    else:
        colored=bc.nocolor_string(row)
    sys.stdout.write(colored)
    if opts.zero and opts.color:
        sys.stdout.write(bc.Z)
    sys.stdout.write("\n")
if opts.zero_final and opts.color:
    sys.stdout.write(bc.Z)