#!/usr/bin/python
import sys
import scipy.misc
import numpy as n

def png2asc(inFile):
    im=scipy.misc.imread(inFile)

    for r in im:
        for c in r:
            if c>127:
                char="X"
            if c<128:
                char="."
            if c==0:
                char=" "
            sys.stdout.write(char)
        sys.stdout.write("\n")    

def asc2png(inFile,outFile):
    reader = open(inFile,'r')
    coords=[]
    max_c=0
    for r,row in enumerate(reader):
        for c,col in enumerate(row):
            if col not in (' ','\n'):
                if col==".":
                    coords.append((r,c,127))
                else:
                    coords.append((r,c,255))
            max_c=max(max_c,c)
    im=n.zeros( (r,max_c-1), dtype=n.uint8 )
    for c in coords:
        im[c[0],c[1]]=c[2]
  
    scipy.misc.imsave(outFile, im)

if len(sys.argv)==1:
    print("Arguments:")
    print("   [png image file] : prints ascii in stdout")
    print("   [text file] [png image file] : convert characters to pixels in image")
    sys.exit(0)
inFile = sys.argv[1]
if inFile.lower().endswith('.png'):
    png2asc(inFile)
else:
    asc2png(inFile,sys.argv[2])