Similar to kvgswap.py Swap the actual vector data of two strokes around in a kanjivg kanki stroke order svg file.

kvgstrokedataswap.py

#! /usr/bin/env python2
# -*- coding: utf-8 ; mode: python -*-
# © Copyright 2013 ospalh@gmail.com
# License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html

import re
import sys

__version__ = '0.0.1'

stroke_re = '^\s.*-s{0}" kvg:type=".*" d="(.*)"/>'


def swap_stroke_data(kanji, a, b):
    """Swap the stroke data in a kanjivg file"""
    # We do hardly any checking at all. If something is wrong, just
    # blow up.
    with open(kanji) as kf:
        lines = kf.readlines()
    num_a = -1
    num_b = -1
    line_a_match = None
    line_b_match = None
    line_a_re = stroke_re.format(a)
    line_b_re = stroke_re.format(b)
    for n, l in enumerate(lines):
        m = re.search(line_a_re, l)
        if m:
            num_a = n
            line_a_match = m
        m = re.search(line_b_re, l)
        if m:
            num_b = n
            line_b_match = m
    if num_a < 0 or num_b < 0:
        raise RuntimeError("Did not find both lines")
    lines[num_a] = lines[num_a].replace(line_a_match.group(1),
                                        line_b_match.group(1))
    lines[num_b] = lines[num_b].replace(line_b_match.group(1),
                                        line_a_match.group(1))
    with open(kanji, 'w') as kf:
        for l in lines:
            kf.write(l)


if __name__ == '__main__':
    helpmsg = u"""Usage: kvgstrokedataswap FILE STROKE_A STROKE_B
Swaps the data (path d="..." values) of strokes A and B in a kanjivg svg file.
"""
    if len(sys.argv) != 4:
        print helpmsg
        sys.exit(0)
    swap_stroke_data(sys.argv[1], sys.argv[2], sys.argv[3])