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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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# Copyright (C) 2017: Andrey Skvortsov

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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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# Package initialisation

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"""

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Beremiz Targets

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- Target are python packages, containing at least one "XSD" file

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- Target class may inherit from a toolchain_(toolchainname)

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- The target folder's name must match to name define in the XSD for TargetType

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"""

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from __future__ import absolute_import

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from os import listdir, path

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import util.paths as paths

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_base_path = paths.AbsDir(__file__)

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def _GetLocalTargetClassFactory(name):

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    return lambda: getattr(__import__(name, globals(), locals()), name+"_target")

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targets = dict([(name, {"xsd":   path.join(_base_path, name, "XSD"),

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                        "class": _GetLocalTargetClassFactory(name),

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                        "code":  {fname: path.join(_base_path, name, fname)

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                                  for fname in listdir(path.join(_base_path, name))

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                                  if (fname.startswith("plc_%s_main" % name) and

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                                      fname.endswith(".c"))}})

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                for name in listdir(_base_path)

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                if (path.isdir(path.join(_base_path, name)) and

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                    not name.startswith("__"))])

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toolchains = {"gcc":  path.join(_base_path, "XSD_toolchain_gcc"),

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              "makefile":  path.join(_base_path, "XSD_toolchain_makefile")}

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def GetBuilder(targetname):

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    return targets[targetname]["class"]()

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def GetTargetChoices():

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    DictXSD_toolchain = {}

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    targetchoices = ""

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    # Get all xsd toolchains

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    for toolchainname, xsdfilename in toolchains.iteritems():

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        if path.isfile(xsdfilename):

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            DictXSD_toolchain["toolchain_"+toolchainname] = open(xsdfilename).read()

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    # Get all xsd targets

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    for target_name, nfo in targets.iteritems():

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        xsd_string = open(nfo["xsd"]).read()

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        targetchoices += xsd_string % dict(DictXSD_toolchain,

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                                           target_name=target_name)

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    return targetchoices

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def GetTargetCode(targetname):

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    codedesc = targets[targetname]["code"]

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    code = "\n".join([open(fpath).read() for _fname, fpath in sorted(codedesc.items())])

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    return code

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def GetHeader():

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    filename = paths.AbsNeighbourFile(__file__, "beremiz.h")

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    return open(filename).read()

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def GetCode(name):

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    filename = paths.AbsNeighbourFile(__file__, name)

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    return open(filename).read()