Command line tool to convert arbitrary files to data: URIs.

todatauri.py

#!/usr/bin/env python
# encoding: utf-8

import getopt
import magic
import sys


help_message = '''
Convert arbitrary files to data: URIs. 

Usage: 
    todatauri.py <filename>
'''


class Usage(Exception):
    def __init__(self, msg):
        self.msg = msg


def main():
    try:
        if len(sys.argv) != 2:
            raise Usage(help_message)
        
        f = open(sys.argv[1])
        contents = f.read()
        contents_encoded = contents.encode('base64').replace('\n','')
        
        mime = magic.Magic(mime=True)
        mime_type = mime.from_buffer(contents)
        
        data_uri = 'data:%s;base64,%s' % (mime_type, contents_encoded)
        print data_uri
        
    except Usage, err:
        print >> sys.stderr, str(err.msg)
        return 2


if __name__ == "__main__":
    sys.exit(main())