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# -*- coding: utf-8 -*-
#
# PROFIBUS - GSD file parser
#
# Copyright (c) 2016-2020 Michael Buesch <m@bues.ch>
#
# Licensed under the terms of the GNU General Public License version 2,
# or (at your option) any later version.
#
import re
__all__ = [
"GSD_STR",
"gsdrepr",
"PrmText",
"PrmTextValue",
"ExtUserPrmData",
"ExtUserPrmDataConst",
"ExtUserPrmDataRef",
"Module",
]
GSD_STR = (
"Prm_Text_Ref",
"Ext_Module_Prm_Data_Len",
"ExtUserPrmData",
"Ext_User_Prm_Data_Const",
"Ext_User_Prm_Data_Ref",
)
def gsdrepr(x):
if isinstance(x, list):
return "[%s]" % ", ".join(gsdrepr(a) for a in x)
if isinstance(x, tuple):
return "(%s, )" % ", ".join(gsdrepr(a) for a in x)
if isinstance(x, dict):
return "{%s}" % ", ".join("%s : %s\n" % (gsdrepr(a), gsdrepr(b))
for a, b in x.items())
if isinstance(x, str):
for i, cs in enumerate(GSD_STR):
if cs == x:
return "GSD_STR[%s]" % i
return repr(x)
class _Item(object):
"""Abstract item base class.
"""
__slots__ = (
"fields",
)
def __init__(self, fields=None):
self.fields = fields or {}
def getField(self, name, default=None):
"""Get a field by name.
"""
return self.fields.get(name, default)
def _repr_field(self, pfx=", ", sfx=""):
if self.fields:
return "%sfields=%s%s" % (pfx, gsdrepr(self.fields), sfx)
return ""
class PrmText(_Item):
"""PrmText section.
"""
REPR_NAME = "PrmText"
__slots__ = (
"refNr",
"texts",
)
def __init__(self, refNr, texts=None, **kwargs):
_Item.__init__(self, **kwargs)
self.refNr = refNr
self.texts = texts or []
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.refNr),
gsdrepr(self.texts),
self._repr_field())
class PrmTextValue(_Item):
"""PrmText text value.
"""
REPR_NAME = "PrmTextValue"
__slots__ = (
"offset",
"text",
)
def __init__(self, offset, text, **kwargs):
_Item.__init__(self, **kwargs)
self.offset = offset
self.text = text
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.offset),
gsdrepr(self.text),
self._repr_field())
class ExtUserPrmData(_Item):
"""ExtUserPrmData section.
"""
REPR_NAME = "ExtUserPrmData"
__slots__ = (
"refNr",
"name",
)
def __init__(self, refNr, name, **kwargs):
_Item.__init__(self, **kwargs)
self.refNr = refNr
self.name = name
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.refNr),
gsdrepr(self.name),
self._repr_field())
class ExtUserPrmDataConst(_Item):
"""Ext_User_Prm_Data_Const(x)
"""
REPR_NAME = "ExtUserPrmDataConst"
__slots__ = (
"offset",
"dataBytes",
)
def __init__(self, offset, dataBytes, **kwargs):
_Item.__init__(self, **kwargs)
self.offset = offset
self.dataBytes = dataBytes
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.offset),
gsdrepr(self.dataBytes),
self._repr_field())
class ExtUserPrmDataRef(_Item):
"""Ext_User_Prm_Data_Ref(x)
"""
REPR_NAME = "ExtUserPrmDataRef"
__slots__ = (
"offset",
"refNr",
)
def __init__(self, offset, refNr, **kwargs):
_Item.__init__(self, **kwargs)
self.offset = offset
self.refNr = refNr
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.offset),
gsdrepr(self.refNr),
self._repr_field())
class Module(_Item):
"""Module section.
"""
REPR_NAME = "Module"
__slots__ = (
"name",
"configBytes",
)
@classmethod
def sanitizeName(cls, name):
return re.subn(r"\s+", " ", name)[0].strip()
def __init__(self, name, configBytes, **kwargs):
_Item.__init__(self, **kwargs)
self.name = name
self.configBytes = configBytes
def __repr__(self):
return "%s(%s, %s%s)" % (
self.REPR_NAME,
gsdrepr(self.name),
gsdrepr(self.configBytes),
self._repr_field())
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