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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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# This file is part of Beremiz, a Integrated Development Environment for

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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

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#

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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

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#

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# See COPYING file for copyrights details.

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#

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# This program is free software; you can redistribute it and/or

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# modify it under the terms of the GNU General Public License

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# as published by the Free Software Foundation; either version 2

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# of the License, or (at your option) any later version.

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#

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# This program 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 this program; if not, write to the Free Software

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

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from __future__ import absolute_import

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import os

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import subprocess

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import wx

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def get_inkscape_path():

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    """ Return the Inkscape path """

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    if wx.Platform == '__WXMSW__':

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        from six.moves import winreg

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        try:

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                svgexepath = winreg.QueryValue(winreg.HKEY_LOCAL_MACHINE,

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                                               'Software\\Classes\\svgfile\\shell\\Inkscape\\command')

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        except OSError:

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            try:

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                svgexepath = winreg.QueryValue(winreg.HKEY_LOCAL_MACHINE,

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                                               'Software\\Classes\\inkscape.svg\\shell\\open\\command')

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            except Exception:

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                return None

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        svgexepath = svgexepath.replace('"%1"', '').strip()

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        return svgexepath.replace('"', '')

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    else:

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        # TODO: search for inkscape in $PATH

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        svgexepath = os.path.join("/usr/bin", "inkscape")

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        if os.path.exists(svgexepath):

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            return svgexepath

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        return None

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def open_win_svg(svgexepath, svgfile):

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    """ Open Inkscape on Windows platform """

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    popenargs = [svgexepath]

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    if svgfile is not None:

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        popenargs.append(svgfile)

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    subprocess.Popen(popenargs)

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def open_lin_svg(svgexepath, svgfile):

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    """ Open Inkscape on Linux platform """

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    if os.path.isfile("/usr/bin/inkscape"):

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        os.system("%s %s &" % (svgexepath, svgfile))

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def open_svg(svgfile):

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    """ Generic function to open SVG file """

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    if wx.Platform == '__WXMSW__':

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        try:

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            open_win_svg(get_inkscape_path(), svgfile)

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        except Exception:

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            wx.MessageBox("Inkscape is not found or installed !")

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            return None

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    else:

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        svgexepath=get_inkscape_path()

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        if os.path.isfile(svgexepath):

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            open_lin_svg(svgexepath, svgfile)

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        else:

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            wx.MessageBox("Inkscape is not found or installed !")

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            return None