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# uu.py
# 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.
#
# This file implements the UUencode and UUdecode functions.
# encode(filename, mode, in_file, out_file)
# decode(filename, mode, in_file)
# decode(in_file, out_file)
# decode(in_file)
import binascii
# encode a fileobject and write out to a file object
def encode(filename, mode, in_file, out_file):
out_file.write('begin %o %s\n' % ((mode&0777),filename))
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')
return None
# decode(filename, mode, in_file)
# decode(in_file, out_file)
# decode(in_file)
def decode(*args):
ok = 1
_setup = None
out_file = None
if len(args) == 3:
filename, mode, in_file = args
if type(filename) != type(''):
ok = 0
if type(mode) != type(0):
ok = 0
try:
_ = getattr(in_file,'readline')
except AttributeError:
ok = 0
def _setup(out_file,args):
filename, mode, in_file = args
# open file as specified and assign out_file for later use
out_file = open(filename,'w',mode)
_out_file_orig = 0
_ = in_file.readline()
return (out_file,_out_file_orig)
elif len(args) == 2:
in_file, out_file = args
try:
_ = getattr(in_file,'readline')
_ = getattr(out_file,'write')
except AttributeError:
ok = 0
def _setup(out_file, args):
in_file, out_file = args
# Toss the 'begin mode filename' part.. not needed
_ = in_file.readline()
_out_file_orig = 1
return (out_file,_out_file_orig)
elif len(args) == 1:
in_file = args[0]
try:
_ = getattr(in_file,'readline')
except AttributeError:
ok = 0
def _setup(out_file, args):
import strop
in_file = args[0]
# open file as specified in uu file and
# assign out_file for later use
i = in_file.readline()
i = strop.strip(i)
if 'begin' != i[:5]:
raise IOError, 'input file not in UUencoded format'
[dummy, mode, filename] = strop.split(i)
mode = strop.atoi(mode, 8)
out_file = open(filename,'w',mode)
_out_file_orig = 0
return (out_file,_out_file_orig)
if ok != 1:
raise SyntaxError, 'must be (filename, mode, in_file) or (in_file,out_file) or (in_file)'
out_file, _out_file_orig = _setup(out_file, args)
str = in_file.readline()
while len(str) > 0 and str != ' \n' and str != 'end\n':
out_file.write(binascii.a2b_uu(str))
str = in_file.readline()
if _out_file_orig == 0:
out_file.close()
del out_file
return None
def test():
import sys
if sys.argv[1:2] == ['-d']:
if sys.argv[2:]:
decode(open(sys.argv[2]), sys.stdout)
else:
decode(sys.stdin, sys.stdout)
elif sys.argv[1:2] == ['-e']:
if sys.argv[2:]:
file = sys.argv[2]
fp = open(file)
else:
file = '-'
fp = sys.stdin
encode(file, 0644, fp, sys.stdout)
else:
print 'usage: uu -d [file]; (to decode)'
print 'or: uu -e [file]; (to encode)'
sys.exit(2)
if __name__ == '__main__':
test()
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