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#!/usr/bin/env python
# coding=utf-8
#
# Copyright (C) 2014 Martin Owens, email@doctormo.org
#
# 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.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
"""
An extension to export multiple svg files from a single svg file containing layers.
Each defs is duplicated for each svg outputted.
"""
from __future__ import unicode_literals
import os
import sys
import copy
import tarfile
import io
import calendar
import time
import inkex
class TarLayers(inkex.OutputExtension):
"""Entry point to our layers export"""
def make_template(self):
"""Returns the current document as a new empty document with the same defs"""
newdoc = copy.deepcopy(self.document)
for (name, layer) in self.layers(newdoc):
layer.getparent().remove(layer)
return newdoc
def layers(self, document):
for node in document.getroot().iterchildren():
if isinstance(node, inkex.Layer) and node.label:
yield (node.label, node)
def io_document(self, name, doc):
string = io.BytesIO()
doc.write(string)
info = tarfile.TarInfo(name=name + ".svg")
info.mtime = calendar.timegm(time.gmtime())
info.size = string.tell()
string.seek(0)
return dict(tarinfo=info, fileobj=string)
def save(self, stream):
"""Save the tar file output"""
tar = tarfile.open(fileobj=stream, mode="w|")
# Switch stdout to binary on Windows.
if sys.platform == "win32":
import msvcrt
try:
msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
except io.UnsupportedOperation:
pass # The .fileno() function is not available during pytest runs
template = self.make_template()
previous = None
for (name, _layer) in self.layers(self.document):
layer = copy.deepcopy(_layer)
if previous != None:
template.getroot().replace(previous, layer)
else:
template.getroot().append(layer)
previous = layer
tar.addfile(**self.io_document(name, template))
if __name__ == "__main__": # pragma: no cover
TarLayers().run()
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