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#!/usr/bin/env python3
#-*- coding: utf-8 -*-
"""
bin2c
~~~~~
Simple tool for creating C array from a binary file.
:copyright: (c) 2016 by Dmitry Alimov.
:license: The MIT License (MIT), see LICENSE for more details.
"""
import argparse
import os
import re
import sys
PY3 = sys.version_info[0] == 3
def bin2c(filename, varname='data', linesize=80, indent=4):
""" Read binary data from file and return as a C array
:param filename: a filename of a file to read.
:param varname: a C array variable name.
:param linesize: a size of a line (min value is 40).
:param indent: an indent (number of spaces) that prepend each line.
"""
if not os.path.isfile(filename):
print('File "%s" is not found!' % filename)
return ''
if not re.match('[a-zA-Z_][a-zA-Z0-9_]*', varname):
print('Invalid variable name "%s"' % varname)
return
with open(filename, 'rb') as in_file:
data = in_file.read()
# limit the line length
if linesize < 40:
linesize = 40
byte_len = 6 # '0x00, '
out = 'const char %s[%d] = {\n' % (varname, len(data))
line = ''
for byte in data:
line += '0x%02x, ' % (byte if PY3 else ord(byte))
if len(line) + indent + byte_len >= linesize:
out += ' ' * indent + line + '\n'
line = ''
# add the last line
if len(line) + indent + byte_len < linesize:
out += ' ' * indent + line + '\n'
# strip the last comma
out = out.rstrip(', \n') + '\n'
out += '};'
return out
def main():
""" Main func """
parser = argparse.ArgumentParser()
parser.add_argument(
'filename', help='filename to convert to C array')
parser.add_argument(
'varname', nargs='?', help='variable name', default='data')
parser.add_argument(
'linesize', nargs='?', help='line length', default=80, type=int)
parser.add_argument(
'indent', nargs='?', help='indent size', default=4, type=int)
args = parser.parse_args()
# print out the data
print(bin2c(args.filename, args.varname, args.linesize, args.indent))
if __name__ == '__main__':
main()
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