81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
#!/usr/bin/python3
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#
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# TwoColPrint - Print text in two columns, wrap as appropriate.
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# Copyright (C) 2011-2012 Johannes Bauer
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#
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# This file is part of jpycommon.
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#
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# jpycommon is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; this program is ONLY licensed under
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# version 3 of the License, later versions are explicitly excluded.
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#
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# jpycommon is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with jpycommon; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Johannes Bauer <JohannesBauer@gmx.de>
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#
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# File UUID c2de9b77-c699-490d-930f-21689e04b12f
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import sys
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import textwrap
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import collections
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_Row = collections.namedtuple("Row", [ "left", "right", "annotation" ])
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class TwoColPrint(object):
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def __init__(self, prefix = "", total_width = 120, spacer_width = 3, width_ratio = 0.25):
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self._rows = [ ]
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self._prefix = prefix
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self._total_width = total_width
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self._spacer_width = spacer_width
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self._width_ratio = width_ratio
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def addrow(self, left_col, right_col, annotation = None):
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self._rows.append(_Row(left = left_col, right = right_col, annotation = annotation))
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return self
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def __iter__(self):
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text_width = self._total_width - len(self._prefix) - self._spacer_width
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assert(text_width > 2)
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left_width = round(self._width_ratio * text_width)
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right_width = text_width - left_width
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assert(len(self._prefix) + left_width + self._spacer_width + right_width == self._total_width)
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spacer = " " * self._spacer_width
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for row in self._rows:
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left_break = textwrap.wrap(row.left, width = left_width)
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right_break = textwrap.wrap(row.right, width = right_width)
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if len(left_break) < len(right_break):
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left_break += [ "" ] * (len(right_break) - len(left_break))
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elif len(left_break) > len(right_break):
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right_break += [ "" ] * (len(left_break) - len(right_break))
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for (leftline, rightline) in zip(left_break, right_break):
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yield ("%s%-*s%s%s" % (self._prefix, left_width, leftline, spacer, rightline), row.annotation)
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def print(self, f = None):
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if f is None:
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f = sys.stdout
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for (line, annotation) in self:
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print(line, file = f)
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if __name__ == "__main__":
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t = TwoColPrint(prefix = " ")
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t.addrow("foobar", "This is the first piece, which is foobar. A foobar is very cool! This is the first piece, which is foobar. A foobar is very cool!")
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t.addrow("barfjdiojf", "And here's a barwhatever And here's a barwhatever And here's a barwhatever")
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t.addrow("x", "Cool, a x.")
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t.addrow("And here's a barwhatever And here's a barwhatever And here's a barwhatever", "barfjdiojf")
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t.print()
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