#!/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 
class bc:
    K="\033[1;30m"
    R="\033[1;31m"
    G="\033[1;32m"
    B="\033[1;34m"
    Y="\033[1;33m"
    M="\033[1;35m"
    C="\033[1;36m"
    W="\033[1;37m"
    k="\033[0;30m"
    r="\033[0;31m"
    g="\033[0;32m"
    b="\033[0;34m"
    y="\033[0;33m"
    m="\033[0;35m"
    c="\033[0;36m"
    w="\033[0;37m"
    S = '\033[1m'
    U = '\033[4m'
    Z = '\033[0m'
    CLR = '\033[2J'
    CLREND = '\033[K'
    
    color_keys="KRGBYMCWkrgbymcwSUZ"
    color_list=[K,R,G,B,Y,M,C,W,k,r,g,b,y,m,c,w,S,U,Z]
        
    def pos(self,y,x):
        return "\033["+str(y)+";"+str(x)+"H"

    def posprint(self, y,x,s):
        sys.stdout.write( self.pos(y,x) + str(s) )

    def clear(self):
        sys.stdout.write( self.CLR+self.pos(0,0) )
    def clear_to_end(self):
        sys.stdout.write( self.CLREND )

    def color_string(self,s):
        for i,c in enumerate(self.color_keys):
            s=s.replace("${"+c+"}",self.color_list[i])
        return s
    def nocolor_string(self,s):
        for i,c in enumerate(self.color_keys):
            s=s.replace("${"+c+"}","")
        return s


def setup_options():
    ''' Create command line options '''
    usage='''
Color notation renderer in ANSI codes
Special syntaxes:
    * Colors: insert string ${C}, where C is one of KRGBYMCWkrgbymcwSUZ

'''
 
    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("filename",type=str, 
                     help="File to show")
    opts=parser.parse_args()
    return opts

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