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chromium / external / github.com / python / cpython / refs/tags/2.1 / . / Lib / uu.py
blob: 11a4e83f91f084440fb8ad1e1a526a0298ecfb5b [file] [log] [blame]
Guido van Rossum105bd981997-07-11 18:39:03[diff] [blame]1#! /usr/bin/env python
2
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]3# Copyright 1994 by Lance Ellinghouse
4# Cathedral City, California Republic, United States of America.
5# All Rights Reserved
Tim Peterse1190062001-01-15 03:34:38[diff] [blame]6# Permission to use, copy, modify, and distribute this software and its
7# documentation for any purpose and without fee is hereby granted,
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]8# provided that the above copyright notice appear in all copies and that
Tim Peterse1190062001-01-15 03:34:38[diff] [blame]9# both that copyright notice and this permission notice appear in
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]10# supporting documentation, and that the name of Lance Ellinghouse
Tim Peterse1190062001-01-15 03:34:38[diff] [blame]11# not be used in advertising or publicity pertaining to distribution
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]12# of the software without specific, written prior permission.
13# LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
14# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
15# FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
16# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
19# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Jack Jansen0a2eaac1995-08-07 14:37:38[diff] [blame]20#
21# Modified by Jack Jansen, CWI, July 1995:
22# - Use binascii module to do the actual line-by-line conversion
23# between ascii and binary. This results in a 1000-fold speedup. The C
24# version is still 5 times faster, though.
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]25# - Arguments more compliant with python standard
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]26
Guido van Rossume7b146f2000-02-04 15:28:42[diff] [blame]27"""Implementation of the UUencode and UUdecode functions.
28
29encode(in_file, out_file [,name, mode])
30decode(in_file [, out_file, mode])
31"""
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]32
Jack Jansen0a2eaac1995-08-07 14:37:38[diff] [blame]33import binascii
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]34import os
Guido van Rossumfbba3041998-10-22 16:18:25[diff] [blame]35import sys
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]36
Skip Montanaro40fc1602001-03-01 04:27:19[diff] [blame]37__all__ = ["Error", "encode", "decode"]
38
Fred Drake9b8d8012000-08-17 04:45:13[diff] [blame]39class Error(Exception):
40 pass
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]41
42def encode(in_file, out_file, name=None, mode=None):
43 """Uuencode file"""
44 #
45 # If in_file is a pathname open it and change defaults
46 #
47 if in_file == '-':
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]48 in_file = sys.stdin
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]49 elif type(in_file) == type(''):
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]50 if name is None:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]51 name = os.path.basename(in_file)
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]52 if mode is None:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]53 try:
54 mode = os.stat(in_file)[0]
55 except AttributeError:
56 pass
57 in_file = open(in_file, 'rb')
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]58 #
59 # Open out_file if it is a pathname
60 #
61 if out_file == '-':
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]62 out_file = sys.stdout
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]63 elif type(out_file) == type(''):
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]64 out_file = open(out_file, 'w')
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]65 #
66 # Set defaults for name and mode
67 #
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]68 if name is None:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]69 name = '-'
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]70 if mode is None:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]71 mode = 0666
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]72 #
73 # Write the data
74 #
75 out_file.write('begin %o %s\n' % ((mode&0777),name))
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]76 str = in_file.read(45)
77 while len(str) > 0:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]78 out_file.write(binascii.b2a_uu(str))
79 str = in_file.read(45)
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]80 out_file.write(' \nend\n')
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]81
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]82
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]83def decode(in_file, out_file=None, mode=None):
84 """Decode uuencoded file"""
85 #
86 # Open the input file, if needed.
87 #
88 if in_file == '-':
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]89 in_file = sys.stdin
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]90 elif type(in_file) == type(''):
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]91 in_file = open(in_file)
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]92 #
Guido van Rossum2ebaa171997-04-08 19:46:02[diff] [blame]93 # Read until a begin is encountered or we've exhausted the file
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]94 #
Guido van Rossum3ccd2f11997-04-08 19:46:53[diff] [blame]95 while 1:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]96 hdr = in_file.readline()
97 if not hdr:
98 raise Error, 'No valid begin line found in input file'
99 if hdr[:5] != 'begin':
100 continue
Guido van Rossum62c11152001-01-10 19:14:28[diff] [blame]101 hdrfields = hdr.split(" ", 2)
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]102 if len(hdrfields) == 3 and hdrfields[0] == 'begin':
103 try:
Guido van Rossum62c11152001-01-10 19:14:28[diff] [blame]104 int(hdrfields[1], 8)
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]105 break
106 except ValueError:
107 pass
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]108 if out_file is None:
Guido van Rossum62c11152001-01-10 19:14:28[diff] [blame]109 out_file = hdrfields[2].rstrip()
Fred Drake8152d322000-12-12 23:20:45[diff] [blame]110 if mode is None:
Guido van Rossum62c11152001-01-10 19:14:28[diff] [blame]111 mode = int(hdrfields[1], 8)
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]112 #
113 # Open the output file
114 #
115 if out_file == '-':
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]116 out_file = sys.stdout
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]117 elif type(out_file) == type(''):
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]118 fp = open(out_file, 'wb')
119 try:
120 os.path.chmod(out_file, mode)
121 except AttributeError:
122 pass
123 out_file = fp
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]124 #
125 # Main decoding loop
126 #
Guido van Rossum44941011999-01-05 18:02:24[diff] [blame]127 s = in_file.readline()
128 while s and s != 'end\n':
129 try:
130 data = binascii.a2b_uu(s)
131 except binascii.Error, v:
132 # Workaround for broken uuencoders by /Fredrik Lundh
133 nbytes = (((ord(s[0])-32) & 63) * 4 + 5) / 3
134 data = binascii.a2b_uu(s[:nbytes])
135 sys.stderr.write("Warning: %s\n" % str(v))
136 out_file.write(data)
137 s = in_file.readline()
Thomas Wouterse27a8b92001-07-11 11:38:20[diff] [blame]138 if not s:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]139 raise Error, 'Truncated input file'
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]140
141def test():
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]142 """uuencode/uudecode main program"""
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]143 import getopt
144
145 dopt = 0
146 topt = 0
147 input = sys.stdin
148 output = sys.stdout
149 ok = 1
150 try:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]151 optlist, args = getopt.getopt(sys.argv[1:], 'dt')
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]152 except getopt.error:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]153 ok = 0
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]154 if not ok or len(args) > 2:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]155 print 'Usage:', sys.argv[0], '[-d] [-t] [input [output]]'
156 print ' -d: Decode (in stead of encode)'
157 print ' -t: data is text, encoded format unix-compatible text'
158 sys.exit(1)
Tim Peterse1190062001-01-15 03:34:38[diff] [blame]159
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]160 for o, a in optlist:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]161 if o == '-d': dopt = 1
162 if o == '-t': topt = 1
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]163
164 if len(args) > 0:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]165 input = args[0]
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]166 if len(args) > 1:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]167 output = args[1]
Jack Jansen8b745121995-08-30 12:19:30[diff] [blame]168
169 if dopt:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]170 if topt:
171 if type(output) == type(''):
172 output = open(output, 'w')
173 else:
174 print sys.argv[0], ': cannot do -t to stdout'
175 sys.exit(1)
176 decode(input, output)
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]177 else:
Guido van Rossum45e2fbc1998-03-26 21:13:24[diff] [blame]178 if topt:
179 if type(input) == type(''):
180 input = open(input, 'r')
181 else:
182 print sys.argv[0], ': cannot do -t from stdin'
183 sys.exit(1)
184 encode(input, output)
Guido van Rossum85347411994-09-09 11:10:15[diff] [blame]185
186if __name__ == '__main__':
187 test()