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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 wx

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import subprocess

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def _get_inkscape_path():

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    """ Return the Inkscape binary path """

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    if wx.Platform == '__WXMSW__':

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        from six.moves import winreg

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        inkcmd = None

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        tries = [(winreg.HKEY_LOCAL_MACHINE, 'Software\\Classes\\svgfile\\shell\\Inkscape\\command'),

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                 (winreg.HKEY_LOCAL_MACHINE, 'Software\\Classes\\inkscape.svg\\shell\\open\\command'),

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                 (winreg.HKEY_CURRENT_USER, 'Software\\Classes\\inkscape.svg\\shell\\open\\command')]

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        for subreg, key in tries:

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            try:

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                inkcmd = winreg.QueryValue(subreg, key)

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                break;

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            except OSError:

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                pass

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        if inkcmd is None:

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            return None

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        return inkcmd.replace('"%1"', '').strip().replace('"', '')

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    else:

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        try:

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            return subprocess.check_output("command -v inkscape", shell=True).strip()

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        except subprocess.CalledProcessError:

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            return None

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_inkscape_path = None

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def get_inkscape_path():

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    """ Return the Inkscape binary path """

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    global _inkscape_path

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    if _inkscape_path is not None:

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        return _inkscape_path

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    _inkscape_path = _get_inkscape_path()

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    return _inkscape_path

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def _get_inkscape_version():

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    inkpath = get_inkscape_path()

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    if inkpath is None:

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        return None

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    return map(int, 

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        subprocess.check_output([inkpath,"--version"]).split()[1].split('.'))

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_inkscape_version = None

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def get_inkscape_version():

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    global _inkscape_version

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    if _inkscape_version is not None:

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        return _inkscape_version

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    _inkscape_version = _get_inkscape_version()

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    return _inkscape_version

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def open_svg(svgfile):

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

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    inkpath = get_inkscape_path()

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    if inkpath is None:

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

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    else:

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        subprocess.Popen([inkpath,svgfile])