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#!/usr/bin/env python3
# -*- encoding: utf-8
## bs-align.py - Filter to align trailing line continuations
##
## Copyright ©2013 Ben Longbons <b.r.longbons@gmail.com>
##
## This file is part of The Mana World (Athena server)
##
## 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 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
# Settings.
pad = 1
align = 4
min_col = 8
import sys
lines = []
for line in sys.stdin:
if line.endswith('\\\n'):
lines.append(line[:-2].rstrip())
continue
if lines:
# TODO: correctly handle tabs and multibyte characters
tlen = max(len(l) for l in lines) + pad
if tlen < min_col:
tlen = min_col
elif tlen % align:
tlen += align - tlen % align
for l in lines:
sys.stdout.writelines([l, ' ' * (tlen - len(l)), '\\\n'])
del lines[:]
sys.stdout.write(line)
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