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#!/usr/bin/env python
# Copyright 2011 Canonical Ltd. Distributed under the terms of the GNU GPLv3.
# Combines multiple SVG files into a single SVG in batch mode
# 2011-01-04 Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>
# 2011-01-05 Paul Sladen <sladen@canonica.com>
import xml.dom.minidom
import sys
import optparse
def commandline():
# Parse commandline
parser = optparse.OptionParser(usage = '%prog [options] INPUT.svg [MOREINPUT.svg] -o OUTPUT.svg')
parser.add_option("-n", "--dry-run", dest = "do_write",
default = True, action = "store_false",
help = "dry run: do not write output file, just test")
parser.add_option("-o", "--output", dest = "output",
help = "full output path for processed SVG file")
options, args = parser.parse_args()
# Validate
if len(args) < 1:
parser.error("one or more input SVG files required")
if options.do_write and not options.output:
parser.error("SVG output filename required")
return options, args
def main():
options, args = commandline()
# Open first SVG and then composite others on top as overlays
base = xml.dom.minidom.parse(args[0])
newline = lambda: base.createTextNode('\n')
for overlay in args[1:]:
comment = base.createComment(" imported from '%s' " % overlay)
dom = xml.dom.minidom.parse(overlay)
# Pull-in '<svg>' tag, clear attributes and rename to '<g>'
g = base.importNode(dom.getElementsByTagName("svg")[0], deep = True)
[g.removeAttribute(k) for k in g.attributes.keys() if k != 'id']
g.tagName = 'g'
# Insert into first SVG with comments and spacing
for node in newline(), comment, newline(), g, newline():
base.documentElement.appendChild(node)
if options.do_write:
base.writexml(open(options.output, "w"))
if __name__=='__main__':
main()
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