#!/usr/bin/env python

# Display a binary (or any) file in chars (if printable), hex and decimal.

# Similar to what od -xc used to do before GNU got hold of it,

# or what xxd (part of the vim package) does,

# but (IMO) with cleaner and more readable output.

# Copyright 2009 by Akkana Peck. Share and enjoy under the GPL v2 or later.

import sys, os

import curses.ascii

do_char = False

do_hex = False

do_dec = False

file_list = []

multi_format = False

def Usage() :

print "Usage:", os.path.basename(sys.argv[0]), "[-cxd] file ..."

exit(1)

def parse_opts() :

global do_char, do_hex, do_dec, file_list, multi_format

num_formats = 0

for i in range(1, len(sys.argv)) :

if sys.argv[i][0] != '-' :

file_list = sys.argv[i:]

break

for c in sys.argv[i][1:] :

if c == 'c' :

do_char = True

num_formats = num_formats + 1

elif c == 'x' :

do_hex = True

num_formats = num_formats + 1

elif c == 'd' :

do_dec = True

num_formats = num_formats + 1

elif c == 'h' :

Usage()

if num_formats == 0 :

do_char = True

do_hex = True

do_dec = True

num_formats = 3

if num_formats > 1 :

multi_format = True

def bdump(filename, do_char, do_hex, do_dec) :

if len(file_list) > 1 :

print filename + ":"

if filename :

try :

fp = open(filename, "r")

except IOError, e:

print "Can't open", filename, ":\n ", e

#sys.exit(e.errno)

return

else :

fp = sys.stdin

try :

while True :

line = fp.read(16)

if line == "" : break

if do_char :

for c in line :

if curses.ascii.isprint(c) :

print "%4c" % (c),

elif curses.ascii.iscntrl(c) :

print " ^" + chr(ord(c) + ord('A') - 1),

else :

print ' ',

print

if do_hex :

for c in line :

print "%4x" % (ord(c)),

print

if do_dec :

for c in line :

print "%4d" % (ord(c)),

print

if multi_format :

print

except IOError, e :

if e.errno == 32 : # Broken pipe

sys.exit(0)

print e

sys.exit(e)

fp.close()

# main() :

parse_opts()

if len(file_list) == 0 :

bdump(None, do_char, do_hex, do_dec)

else :

for filename in file_list :

bdump(filename, do_char, do_hex, do_dec)