#!/usr/bin/env python3

""" Make ASCII table """

import argparse

import pandas as pd

# --------------------------------------------------

def get_args():

"""Get command-line arguments"""

parser = argparse.ArgumentParser(

description='Make ASCII table',

formatter_class=argparse.ArgumentDefaultsHelpFormatter)

parser.add_argument('-c',

'--cols',

help='Number of columns',

metavar='int',

type=int,

default=8)

parser.add_argument('-l',

'--lower',

help='Lower chr value',

metavar='int',

type=int,

default=0)

parser.add_argument('-u',

'--upper',

help='Upper chr value',

metavar='int',

type=int,

default=128)

args = parser.parse_args()

if args.lower < 0:

parser.error(f'--lower "{args.lower}" must be >= 0')

if args.upper > 128:

parser.error(f'--upper "{args.upper}" must be <= 128')

if args.lower > args.upper:

args.lower, args.upper = args.upper, args.lower

return args

# --------------------------------------------------

def main():

"""Make a jazz noise here"""

args = get_args()

lower = args.lower

upper = args.upper

num_cells = args.upper - args.lower

num_rows = round(num_cells / args.cols)

cells = list(chunker(list(map(cell, range(lower, upper))), num_rows))

df = pd.DataFrame(cells)

for i, row in df.T.iterrows():

print(' '.join(map(lambda v: v or ' ' * 5, row)))

# --------------------------------------------------

def cell(n):

"""Format a cell"""

return '{:3} {:5}'.format(

n, 'SPACE'

if n == 32 else 'DEL' if n == 127 else chr(n) if n >= 33 else 'NA')

# --------------------------------------------------

def chunker(seq, size):

"""Chunk a list into bits"""

return (seq[pos:pos + size] for pos in range(0, len(seq), size))

# --------------------------------------------------

if __name__ == '__main__':

main()