kopia lustrzana https://github.com/micropython/micropython-lib
uu: Add pristine from CPython 3.3.3.
Imports, but won't work unless binascii methods are implemented.pull/118/head
Paul Sokolovsky
rodzic
2fee21792b
commit
0a8f6b1ff4
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srctype = cpython
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type = module
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version = 0.5
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depends = binascii, os
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import sys
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# Remove current dir from sys.path, otherwise setuptools will peek up our
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# module instead of system.
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sys.path.pop(0)
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from setuptools import setup
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setup(name='micropython-uu',
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version='0.5',
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description='CPython uu module ported to MicroPython',
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long_description='This is a module ported from CPython standard library to be compatible with\nMicroPython interpreter. Usually, this means applying small patches for\nfeatures not supported (yet, or at all) in MicroPython. Sometimes, heavier\nchanges are required. Note that CPython modules are written with availability\nof vast resources in mind, and may not work for MicroPython ports with\nlimited heap. If you are affected by such a case, please help reimplement\nthe module from scratch.',
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url='https://github.com/micropython/micropython/issues/405',
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author='CPython Developers',
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author_email='python-dev@python.org',
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maintainer='MicroPython Developers',
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maintainer_email='micro-python@googlegroups.com',
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license='Python',
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py_modules=['uu'],
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install_requires=['micropython-binascii', 'micropython-os'])
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#! /usr/bin/env python3
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# Copyright 1994 by Lance Ellinghouse
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# Cathedral City, California Republic, United States of America.
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# All Rights Reserved
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose and without fee is hereby granted,
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# provided that the above copyright notice appear in all copies and that
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# both that copyright notice and this permission notice appear in
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# supporting documentation, and that the name of Lance Ellinghouse
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# not be used in advertising or publicity pertaining to distribution
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# of the software without specific, written prior permission.
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# LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
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# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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# FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
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# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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# Modified by Jack Jansen, CWI, July 1995:
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# - Use binascii module to do the actual line-by-line conversion
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# between ascii and binary. This results in a 1000-fold speedup. The C
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# version is still 5 times faster, though.
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# - Arguments more compliant with python standard
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"""Implementation of the UUencode and UUdecode functions.
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encode(in_file, out_file [,name, mode])
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decode(in_file [, out_file, mode])
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"""
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import binascii
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import os
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import sys
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__all__ = ["Error", "encode", "decode"]
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class Error(Exception):
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pass
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def encode(in_file, out_file, name=None, mode=None):
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"""Uuencode file"""
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#
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# If in_file is a pathname open it and change defaults
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#
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opened_files = []
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try:
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if in_file == '-':
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in_file = sys.stdin.buffer
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elif isinstance(in_file, str):
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if name is None:
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name = os.path.basename(in_file)
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if mode is None:
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try:
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mode = os.stat(in_file).st_mode
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except AttributeError:
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pass
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in_file = open(in_file, 'rb')
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opened_files.append(in_file)
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#
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# Open out_file if it is a pathname
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#
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if out_file == '-':
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out_file = sys.stdout.buffer
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elif isinstance(out_file, str):
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out_file = open(out_file, 'wb')
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opened_files.append(out_file)
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#
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# Set defaults for name and mode
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#
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if name is None:
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name = '-'
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if mode is None:
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mode = 0o666
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#
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# Write the data
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#
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out_file.write(('begin %o %s\n' % ((mode & 0o777), name)).encode("ascii"))
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data = in_file.read(45)
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while len(data) > 0:
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out_file.write(binascii.b2a_uu(data))
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data = in_file.read(45)
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out_file.write(b' \nend\n')
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finally:
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for f in opened_files:
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f.close()
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def decode(in_file, out_file=None, mode=None, quiet=False):
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"""Decode uuencoded file"""
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#
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# Open the input file, if needed.
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#
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opened_files = []
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if in_file == '-':
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in_file = sys.stdin.buffer
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elif isinstance(in_file, str):
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in_file = open(in_file, 'rb')
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opened_files.append(in_file)
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try:
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#
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# Read until a begin is encountered or we've exhausted the file
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#
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while True:
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hdr = in_file.readline()
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if not hdr:
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raise Error('No valid begin line found in input file')
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if not hdr.startswith(b'begin'):
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continue
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hdrfields = hdr.split(b' ', 2)
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if len(hdrfields) == 3 and hdrfields[0] == b'begin':
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try:
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int(hdrfields[1], 8)
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break
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except ValueError:
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pass
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if out_file is None:
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# If the filename isn't ASCII, what's up with that?!?
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out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii")
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if os.path.exists(out_file):
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raise Error('Cannot overwrite existing file: %s' % out_file)
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if mode is None:
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mode = int(hdrfields[1], 8)
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#
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# Open the output file
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#
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if out_file == '-':
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out_file = sys.stdout.buffer
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elif isinstance(out_file, str):
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fp = open(out_file, 'wb')
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try:
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os.path.chmod(out_file, mode)
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except AttributeError:
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pass
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out_file = fp
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opened_files.append(out_file)
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#
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# Main decoding loop
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#
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s = in_file.readline()
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while s and s.strip(b' \t\r\n\f') != b'end':
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try:
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data = binascii.a2b_uu(s)
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except binascii.Error as v:
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# Workaround for broken uuencoders by /Fredrik Lundh
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nbytes = (((s[0]-32) & 63) * 4 + 5) // 3
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data = binascii.a2b_uu(s[:nbytes])
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if not quiet:
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sys.stderr.write("Warning: %s\n" % v)
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out_file.write(data)
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s = in_file.readline()
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if not s:
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raise Error('Truncated input file')
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finally:
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for f in opened_files:
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f.close()
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def test():
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"""uuencode/uudecode main program"""
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import optparse
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parser = optparse.OptionParser(usage='usage: %prog [-d] [-t] [input [output]]')
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parser.add_option('-d', '--decode', dest='decode', help='Decode (instead of encode)?', default=False, action='store_true')
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parser.add_option('-t', '--text', dest='text', help='data is text, encoded format unix-compatible text?', default=False, action='store_true')
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(options, args) = parser.parse_args()
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if len(args) > 2:
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parser.error('incorrect number of arguments')
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sys.exit(1)
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# Use the binary streams underlying stdin/stdout
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input = sys.stdin.buffer
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output = sys.stdout.buffer
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if len(args) > 0:
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input = args[0]
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if len(args) > 1:
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output = args[1]
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if options.decode:
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if options.text:
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if isinstance(output, str):
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output = open(output, 'wb')
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else:
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print(sys.argv[0], ': cannot do -t to stdout')
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sys.exit(1)
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decode(input, output)
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else:
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if options.text:
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if isinstance(input, str):
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input = open(input, 'rb')
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else:
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print(sys.argv[0], ': cannot do -t from stdin')
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sys.exit(1)
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encode(input, output)
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if __name__ == '__main__':
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test()
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