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#!/usr/bin/env python
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""
An extension to export multiple svg files from a single svg file containing layers.
Each defs is duplicated for each svg outputed.
"""
import os
import sys
import copy
import tarfile
import StringIO
import calendar
import time
# Inkscape Libraries
import inkex
import simplestyle
GROUP = "{http://www.w3.org/2000/svg}g"
LABEL = "{http://www.inkscape.org/namespaces/inkscape}label"
GROUPMODE = "{http://www.inkscape.org/namespaces/inkscape}groupmode"
def oprint(item):
"""DEBUG print an object"""
for name in dir(item):
value = getattr(item, name)
if callable(value):
yield "%s()" % name
else:
yield "%s = %s" % (name, str(value))
def fprint(data):
"""DEBUG print something"""
if isinstance(data, basestring):
sys.stderr.write("DEBUG: %s\n" % data)
else:
return fprint("%s(%s)\n " % (str(data), type(data).__name__) \
+ "\n ".join(oprint(data)))
class LayersOutput(inkex.Effect):
"""Entry point to our layers export"""
def __init__(self):
inkex.Effect.__init__(self)
if os.name == 'nt':
self.encoding = "cp437"
else:
self.encoding = "latin-1"
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 self.is_layer(node):
name = node.attrib.get(LABEL, None)
if name:
yield (name, node)
def is_layer(self, node):
return node.tag == GROUP and node.attrib.get(GROUPMODE,'').lower() == 'layer'
def io_document(self, name, doc):
string = StringIO.StringIO()
doc.write(string)
string.seek(0)
info = tarfile.TarInfo(name=name+'.svg')
info.mtime = calendar.timegm(time.gmtime())
info.size = len(string.buf)
return dict(tarinfo=info, fileobj=string)
def effect(self):
# open output tar file as a stream (to stdout)
tar = tarfile.open(fileobj=sys.stdout, mode='w|')
# Switch stdout to binary on Windows.
if sys.platform == "win32":
import msvcrt
msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
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
e = LayersOutput()
e.affect()
# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
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