# number_systems.py:
from __future__ import print_function
from PDFWriter import PDFWriter
import sys
'''
A program to generate a table of numbers from
0 to 255, in 4 numbering systems:
- binary
- octal
- decimal
- hexadecimal
Author: Vasudev Ram
Copyright 2016 Vasudev Ram
Web site: https://vasudevram.github.io
Blog: http://jugad2.blogspot.com
Product store on Gumroad: https://gumroad.com/vasudevram
'''
def print_and_write(s, pw):
print(s)
pw.writeLine(s)
sa, lsa = sys.argv, len(sys.argv)
if lsa == 1:
sys.stderr.write("Usage: {} out_filename.pdf\n".format(sa[0]))
sys.exit(1)
with PDFWriter(sa[1]) as pw:
pw.setFont('Courier', 12)
pw.setHeader('*** Number table: 0 to 255 in bases 2, 8, 10, 16 ***')
pw.setFooter('*** By xtopdf: https://google.com/search?q=xtopdf ***')
b = "Bin"; o = "Oct"; d = "Dec"; h = "Hex"
header = "{b:>10}{o:>10}{d:>10}{h:>10}".format(b=b, o=o, d=d, h=h)
for i in range(256):
if i % 16 == 0:
print_and_write(header, pw)
print_and_write("{b:>10}{o:>10}{d:>10}{h:>10}".format( \
b=bin(i), o=oct(i), d=str(i), h=hex(i)), pw)
print_and_write(header, pw)
