Python code coverage for Lib/uu.py

#	count	content
1	n/a	#! /usr/bin/env python3
2	n/a
3	n/a	# Copyright 1994 by Lance Ellinghouse
4	n/a	# Cathedral City, California Republic, United States of America.
5	n/a	# All Rights Reserved
6	n/a	# Permission to use, copy, modify, and distribute this software and its
7	n/a	# documentation for any purpose and without fee is hereby granted,
8	n/a	# provided that the above copyright notice appear in all copies and that
9	n/a	# both that copyright notice and this permission notice appear in
10	n/a	# supporting documentation, and that the name of Lance Ellinghouse
11	n/a	# not be used in advertising or publicity pertaining to distribution
12	n/a	# of the software without specific, written prior permission.
13	n/a	# LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
14	n/a	# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
15	n/a	# FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
16	n/a	# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17	n/a	# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18	n/a	# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
19	n/a	# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20	n/a	#
21	n/a	# Modified by Jack Jansen, CWI, July 1995:
22	n/a	# - Use binascii module to do the actual line-by-line conversion
23	n/a	# between ascii and binary. This results in a 1000-fold speedup. The C
24	n/a	# version is still 5 times faster, though.
25	n/a	# - Arguments more compliant with python standard
26	n/a
27	n/a	"""Implementation of the UUencode and UUdecode functions.
28	n/a
29	n/a	encode(in_file, out_file [,name, mode])
30	n/a	decode(in_file [, out_file, mode])
31	n/a	"""
32	n/a
33	n/a	import binascii
34	n/a	import os
35	n/a	import sys
36	n/a
37	n/a	__all__ = ["Error", "encode", "decode"]
38	n/a
39	n/a	class Error(Exception):
40	n/a	pass
41	n/a
42	n/a	def encode(in_file, out_file, name=None, mode=None):
43	n/a	"""Uuencode file"""
44	n/a	#
45	n/a	# If in_file is a pathname open it and change defaults
46	n/a	#
47	n/a	opened_files = []
48	n/a	try:
49	n/a	if in_file == '-':
50	n/a	in_file = sys.stdin.buffer
51	n/a	elif isinstance(in_file, str):
52	n/a	if name is None:
53	n/a	name = os.path.basename(in_file)
54	n/a	if mode is None:
55	n/a	try:
56	n/a	mode = os.stat(in_file).st_mode
57	n/a	except AttributeError:
58	n/a	pass
59	n/a	in_file = open(in_file, 'rb')
60	n/a	opened_files.append(in_file)
61	n/a	#
62	n/a	# Open out_file if it is a pathname
63	n/a	#
64	n/a	if out_file == '-':
65	n/a	out_file = sys.stdout.buffer
66	n/a	elif isinstance(out_file, str):
67	n/a	out_file = open(out_file, 'wb')
68	n/a	opened_files.append(out_file)
69	n/a	#
70	n/a	# Set defaults for name and mode
71	n/a	#
72	n/a	if name is None:
73	n/a	name = '-'
74	n/a	if mode is None:
75	n/a	mode = 0o666
76	n/a	#
77	n/a	# Write the data
78	n/a	#
79	n/a	out_file.write(('begin %o %s\n' % ((mode & 0o777), name)).encode("ascii"))
80	n/a	data = in_file.read(45)
81	n/a	while len(data) > 0:
82	n/a	out_file.write(binascii.b2a_uu(data))
83	n/a	data = in_file.read(45)
84	n/a	out_file.write(b' \nend\n')
85	n/a	finally:
86	n/a	for f in opened_files:
87	n/a	f.close()
88	n/a
89	n/a
90	n/a	def decode(in_file, out_file=None, mode=None, quiet=False):
91	n/a	"""Decode uuencoded file"""
92	n/a	#
93	n/a	# Open the input file, if needed.
94	n/a	#
95	n/a	opened_files = []
96	n/a	if in_file == '-':
97	n/a	in_file = sys.stdin.buffer
98	n/a	elif isinstance(in_file, str):
99	n/a	in_file = open(in_file, 'rb')
100	n/a	opened_files.append(in_file)
101	n/a
102	n/a	try:
103	n/a	#
104	n/a	# Read until a begin is encountered or we've exhausted the file
105	n/a	#
106	n/a	while True:
107	n/a	hdr = in_file.readline()
108	n/a	if not hdr:
109	n/a	raise Error('No valid begin line found in input file')
110	n/a	if not hdr.startswith(b'begin'):
111	n/a	continue
112	n/a	hdrfields = hdr.split(b' ', 2)
113	n/a	if len(hdrfields) == 3 and hdrfields[0] == b'begin':
114	n/a	try:
115	n/a	int(hdrfields[1], 8)
116	n/a	break
117	n/a	except ValueError:
118	n/a	pass
119	n/a	if out_file is None:
120	n/a	# If the filename isn't ASCII, what's up with that?!?
121	n/a	out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii")
122	n/a	if os.path.exists(out_file):
123	n/a	raise Error('Cannot overwrite existing file: %s' % out_file)
124	n/a	if mode is None:
125	n/a	mode = int(hdrfields[1], 8)
126	n/a	#
127	n/a	# Open the output file
128	n/a	#
129	n/a	if out_file == '-':
130	n/a	out_file = sys.stdout.buffer
131	n/a	elif isinstance(out_file, str):
132	n/a	fp = open(out_file, 'wb')
133	n/a	try:
134	n/a	os.path.chmod(out_file, mode)
135	n/a	except AttributeError:
136	n/a	pass
137	n/a	out_file = fp
138	n/a	opened_files.append(out_file)
139	n/a	#
140	n/a	# Main decoding loop
141	n/a	#
142	n/a	s = in_file.readline()
143	n/a	while s and s.strip(b' \t\r\n\f') != b'end':
144	n/a	try:
145	n/a	data = binascii.a2b_uu(s)
146	n/a	except binascii.Error as v:
147	n/a	# Workaround for broken uuencoders by /Fredrik Lundh
148	n/a	nbytes = (((s[0]-32) & 63) * 4 + 5) // 3
149	n/a	data = binascii.a2b_uu(s[:nbytes])
150	n/a	if not quiet:
151	n/a	sys.stderr.write("Warning: %s\n" % v)
152	n/a	out_file.write(data)
153	n/a	s = in_file.readline()
154	n/a	if not s:
155	n/a	raise Error('Truncated input file')
156	n/a	finally:
157	n/a	for f in opened_files:
158	n/a	f.close()
159	n/a
160	n/a	def test():
161	n/a	"""uuencode/uudecode main program"""
162	n/a
163	n/a	import optparse
164	n/a	parser = optparse.OptionParser(usage='usage: %prog [-d] [-t] [input [output]]')
165	n/a	parser.add_option('-d', '--decode', dest='decode', help='Decode (instead of encode)?', default=False, action='store_true')
166	n/a	parser.add_option('-t', '--text', dest='text', help='data is text, encoded format unix-compatible text?', default=False, action='store_true')
167	n/a
168	n/a	(options, args) = parser.parse_args()
169	n/a	if len(args) > 2:
170	n/a	parser.error('incorrect number of arguments')
171	n/a	sys.exit(1)
172	n/a
173	n/a	# Use the binary streams underlying stdin/stdout
174	n/a	input = sys.stdin.buffer
175	n/a	output = sys.stdout.buffer
176	n/a	if len(args) > 0:
177	n/a	input = args[0]
178	n/a	if len(args) > 1:
179	n/a	output = args[1]
180	n/a
181	n/a	if options.decode:
182	n/a	if options.text:
183	n/a	if isinstance(output, str):
184	n/a	output = open(output, 'wb')
185	n/a	else:
186	n/a	print(sys.argv[0], ': cannot do -t to stdout')
187	n/a	sys.exit(1)
188	n/a	decode(input, output)
189	n/a	else:
190	n/a	if options.text:
191	n/a	if isinstance(input, str):
192	n/a	input = open(input, 'rb')
193	n/a	else:
194	n/a	print(sys.argv[0], ': cannot do -t from stdin')
195	n/a	sys.exit(1)
196	n/a	encode(input, output)
197	n/a
198	n/a	if __name__ == '__main__':
199	n/a	test()