| #! /usr/bin/env python |
| |
| # Copyright 1994 by Lance Ellinghouse |
| # Cathedral City, California Republic, United States of America. |
| # All Rights Reserved |
| # Permission to use, copy, modify, and distribute this software and its |
| # documentation for any purpose and without fee is hereby granted, |
| # provided that the above copyright notice appear in all copies and that |
| # both that copyright notice and this permission notice appear in |
| # supporting documentation, and that the name of Lance Ellinghouse |
| # not be used in advertising or publicity pertaining to distribution |
| # of the software without specific, written prior permission. |
| # LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| # THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| # FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE |
| # FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| # |
| # Modified by Jack Jansen, CWI, July 1995: |
| # - Use binascii module to do the actual line-by-line conversion |
| # between ascii and binary. This results in a 1000-fold speedup. The C |
| # version is still 5 times faster, though. |
| # - Arguments more compliant with python standard |
| |
| """Implementation of the UUencode and UUdecode functions. |
| |
| encode(in_file, out_file [,name, mode]) |
| decode(in_file [, out_file, mode]) |
| """ |
| |
| import binascii |
| import os |
| import string |
| import sys |
| |
| classError(Exception): |
| pass |
| |
| def encode(in_file, out_file, name=None, mode=None): |
| """Uuencode file""" |
| # |
| # If in_file is a pathname open it and change defaults |
| # |
| if in_file=='-': |
| in_file= sys.stdin |
| elif type(in_file)== type(''): |
| if name==None: |
| name= os.path.basename(in_file) |
| if mode==None: |
| try: |
| mode= os.stat(in_file)[0] |
| exceptAttributeError: |
| pass |
| in_file= open(in_file,'rb') |
| # |
| # Open out_file if it is a pathname |
| # |
| if out_file=='-': |
| out_file= sys.stdout |
| elif type(out_file)== type(''): |
| out_file= open(out_file,'w') |
| # |
| # Set defaults for name and mode |
| # |
| if name==None: |
| name='-' |
| if mode==None: |
| mode=0666 |
| # |
| # Write the data |
| # |
| out_file.write('begin %o %s\n'%((mode&0777),name)) |
| str= in_file.read(45) |
| while len(str)>0: |
| out_file.write(binascii.b2a_uu(str)) |
| str= in_file.read(45) |
| out_file.write(' \nend\n') |
| |
| |
| def decode(in_file, out_file=None, mode=None): |
| """Decode uuencoded file""" |
| # |
| # Open the input file, if needed. |
| # |
| if in_file=='-': |
| in_file= sys.stdin |
| elif type(in_file)== type(''): |
| in_file= open(in_file) |
| # |
| # Read until a begin is encountered or we've exhausted the file |
| # |
| while1: |
| hdr= in_file.readline() |
| ifnot hdr: |
| raiseError,'No valid begin line found in input file' |
| if hdr[:5]!='begin': |
| continue |
| hdrfields= string.split(hdr) |
| if len(hdrfields)==3and hdrfields[0]=='begin': |
| try: |
| string.atoi(hdrfields[1],8) |
| break |
| exceptValueError: |
| pass |
| if out_file==None: |
| out_file= hdrfields[2] |
| if mode==None: |
| mode= string.atoi(hdrfields[1],8) |
| # |
| # Open the output file |
| # |
| if out_file=='-': |
| out_file= sys.stdout |
| elif type(out_file)== type(''): |
| fp= open(out_file,'wb') |
| try: |
| os.path.chmod(out_file, mode) |
| exceptAttributeError: |
| pass |
| out_file= fp |
| # |
| # Main decoding loop |
| # |
| s= in_file.readline() |
| while sand s!='end\n': |
| try: |
| data= binascii.a2b_uu(s) |
| except binascii.Error, v: |
| # Workaround for broken uuencoders by /Fredrik Lundh |
| nbytes=(((ord(s[0])-32)&63)*4+5)/3 |
| data= binascii.a2b_uu(s[:nbytes]) |
| sys.stderr.write("Warning: %s\n"% str(v)) |
| out_file.write(data) |
| s= in_file.readline() |
| ifnot str: |
| raiseError,'Truncated input file' |
| |
| def test(): |
| """uuencode/uudecode main program""" |
| import getopt |
| |
| dopt=0 |
| topt=0 |
| input= sys.stdin |
| output= sys.stdout |
| ok=1 |
| try: |
| optlist, args= getopt.getopt(sys.argv[1:],'dt') |
| except getopt.error: |
| ok=0 |
| ifnot okor len(args)>2: |
| print'Usage:', sys.argv[0],'[-d] [-t] [input [output]]' |
| print' -d: Decode (in stead of encode)' |
| print' -t: data is text, encoded format unix-compatible text' |
| sys.exit(1) |
| |
| for o, ain optlist: |
| if o=='-d': dopt=1 |
| if o=='-t': topt=1 |
| |
| if len(args)>0: |
| input= args[0] |
| if len(args)>1: |
| output= args[1] |
| |
| if dopt: |
| if topt: |
| if type(output)== type(''): |
| output= open(output,'w') |
| else: |
| print sys.argv[0],': cannot do -t to stdout' |
| sys.exit(1) |
| decode(input, output) |
| else: |
| if topt: |
| if type(input)== type(''): |
| input= open(input,'r') |
| else: |
| print sys.argv[0],': cannot do -t from stdin' |
| sys.exit(1) |
| encode(input, output) |
| |
| if __name__=='__main__': |
| test() |
