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unwrap
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unwrap
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#! /usr/bin/python
# unwrap (Python script) -- removes soft line breaks
#
# Version: 1.0
# Copyright: (c)2015 Alastair Irvine <alastair@plug.org.au>
# Keywords: qp text
# Licence: This file is released under the GNU General Public License
#
'''Description:
Usage:
Options:
'''
# Licence details:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# See http://www.gnu.org/licenses/gpl-2.0.html for more information.
#
# You can find the complete text of the GPLv2 in the file
# /usr/share/common-licenses/GPL-2 on Debian systems.
# Or see the file COPYING in the same directory as this program.
#
#
# TO-DO:
import sys
import getopt
import quopri
import StringIO
self="unwrap"
allowed_options='hdq'
allowed_long_options=['help']
# *** CLASSES ***
class Output(object):
"Collects a list of lines, and outputs them (joined by a space) when required."
def __init__(self):
self.lines = []
def addline(self, line):
self.lines.append(line)
def flush(self):
"""Returns a paragraph with a newline appended, or an empty string if no
lines are present."""
s = ""
if self.lines:
s = " ".join(self.lines) + "\n"
self.lines = []
return s
# *** FUNCTIONS ***
def show_help(dest=sys.stdout):
print >> dest, __doc__,
def report_error(*msg):
print >> sys.stderr, self + ": Error:", msg
def report_warning(*msg):
print >> sys.stderr, self + ": Warning:", msg
def report_notice(*msg):
print >> sys.stderr, self + ": Notice:", msg
def process_regular(f):
o = Output()
text = ""
# Process lines, detecting paragraphs from empty lines and re-inserting line breaks
for line in f.readlines():
# Used to use rstrip() here, but why??
s = line.strip()
if s == "":
text += o.flush() + "\n"
else:
o.addline(s)
return text + o.flush()
def process_quopri(f):
b = StringIO.StringIO()
quopri.decode(f, b)
b.seek(0)
## print len(b.getvalue())
return process_regular(b)
# *** MAINLINE ***
if __name__ == '__main__':
# == Command-line parsing ==
# -- defaults --
debug = 0
# -- option handling --
try:
optlist, args = getopt.getopt(sys.argv[1:], allowed_options, allowed_long_options)
except getopt.GetoptError, e:
report_error(e)
sys.exit(1)
# Create a special dict object that defaults to False for unspecified options
from collections import defaultdict
params = defaultdict(bool)
for option, opt_arg in optlist:
if option == "-q":
params["quopri"] = True
elif option == "-d":
debug += 1
elif option == "-h" or option == "--help":
show_help()
sys.exit(0)
# -- argument checking --
## if len(args) not in (2, 3):
## report_error("Invalid command-line parameters.")
## show_help(sys.stderr)
## sys.exit(1)
# == processing ==
if len(args) == 0 or args[1] == "-":
if params["quopri"]:
print process_quopri(sys.stdin)
else:
print process_regular(sys.stdin)
else:
for filename in args:
f = open(filename)
if params["quopri"]:
print process_quopri(f)
else:
print process_regular(f)