479 lines
20 KiB
Python
479 lines
20 KiB
Python
# ToUpload/parsers/parser_utils.py
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# -*- coding: utf-8 -*-
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from lxml import etree
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import traceback
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# --- Namespaces (Común para muchos parsers) ---
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ns = {
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"iface": "http://www.siemens.com/automation/Openness/SW/Interface/v5",
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"flg": "http://www.siemens.com/automation/Openness/SW/NetworkSource/FlgNet/v4",
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"st": "http://www.siemens.com/automation/Openness/SW/NetworkSource/StructuredText/v3",
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"stl": "http://www.siemens.com/automation/Openness/SW/NetworkSource/StatementList/v4",
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}
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# --- Funciones Comunes de Extracción de Texto y Nodos ---
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def get_multilingual_text(element, default_lang="en-US", fallback_lang="it-IT"):
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"""Extrae texto multilingüe de un elemento XML."""
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if element is None:
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return ""
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try:
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# Intenta buscar el idioma por defecto
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xpath_expr_default = f".//iface:MultilingualTextItem[iface:AttributeList/iface:Culture='{default_lang}']/iface:AttributeList/iface:Text"
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text_items_default = element.xpath(xpath_expr_default, namespaces=ns)
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if text_items_default and text_items_default[0].text is not None:
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return text_items_default[0].text.strip()
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# Intenta buscar el idioma de fallback
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xpath_expr_fallback = f".//iface:MultilingualTextItem[iface:AttributeList/iface:Culture='{fallback_lang}']/iface:AttributeList/iface:Text"
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text_items_fallback = element.xpath(xpath_expr_fallback, namespaces=ns)
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if text_items_fallback and text_items_fallback[0].text is not None:
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return text_items_fallback[0].text.strip()
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# Si no encuentra ninguno, toma el primer texto que encuentre
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xpath_expr_any = ".//iface:MultilingualTextItem/iface:AttributeList/iface:Text"
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text_items_any = element.xpath(xpath_expr_any, namespaces=ns)
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if text_items_any and text_items_any[0].text is not None:
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return text_items_any[0].text.strip()
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# Fallback si MultilingualText está vacío o tiene una estructura inesperada
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return ""
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except Exception as e:
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print(f"Advertencia: Error extrayendo MultilingualText: {e}")
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# traceback.print_exc() # Descomentar para más detalles del error
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return ""
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def get_symbol_name(symbol_element):
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"""Obtiene el nombre completo de un símbolo desde un elemento <flg:Symbol>."""
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# Adaptado para usar namespace flg
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if symbol_element is None:
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return None
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try:
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# Asume que Component está dentro de Symbol y ambos están en el namespace flg
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components = symbol_element.xpath("./flg:Component/@Name", namespaces=ns)
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# Formatear correctamente con comillas dobles si es necesario (ej. DBs)
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return (
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".".join(
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f'"{c}"' if not c.startswith("#") and '"' not in c else c
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for c in components
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)
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if components
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else None
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)
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except Exception as e:
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print(f"Advertencia: Excepción en get_symbol_name: {e}")
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return None
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def parse_access(access_element):
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"""Parsea un nodo <flg:Access> devolviendo un diccionario con su información."""
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# Adaptado para usar namespace flg
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if access_element is None:
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return None
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uid = access_element.get("UId")
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scope = access_element.get("Scope")
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info = {"uid": uid, "scope": scope, "type": "unknown"}
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# Buscar Symbol o Constant usando el namespace flg
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symbol = access_element.xpath("./flg:Symbol", namespaces=ns)
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constant = access_element.xpath("./flg:Constant", namespaces=ns)
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if symbol:
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info["type"] = "variable"
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# Llamar a get_symbol_name que ahora espera flg:Symbol
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info["name"] = get_symbol_name(symbol[0])
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if info["name"] is None:
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info["type"] = "error_parsing_symbol"
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print(f"Error: No se pudo parsear nombre símbolo Access UID={uid}")
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# Intentar extraer texto directamente como fallback muy básico
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raw_text = "".join(symbol[0].xpath(".//text()")).strip()
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info["name"] = (
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f'"_ERR_PARSING_{raw_text[:20]}"'
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if raw_text
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else f'"_ERR_PARSING_EMPTY_SYMBOL_ACCESS_{uid}"'
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)
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# return info # Podríamos devolver el error aquí
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elif constant:
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info["type"] = "constant"
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# Buscar ConstantType y ConstantValue usando el namespace flg
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const_type_elem = constant[0].xpath("./flg:ConstantType", namespaces=ns)
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const_val_elem = constant[0].xpath("./flg:ConstantValue", namespaces=ns)
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# Extraer texto
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info["datatype"] = (
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const_type_elem[0].text.strip()
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if const_type_elem and const_type_elem[0].text is not None
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else "Unknown"
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)
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value_str = (
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const_val_elem[0].text.strip()
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if const_val_elem and const_val_elem[0].text is not None
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else None
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)
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if value_str is None:
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info["type"] = "error_parsing_constant"
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info["value"] = None
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print(f"Error: Constante sin valor Access UID={uid}")
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# return info
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# Inferir tipo si es Unknown (igual que antes)
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if info["datatype"] == "Unknown" and value_str:
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val_lower = value_str.lower()
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if val_lower in ["true", "false"]:
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info["datatype"] = "Bool"
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elif value_str.isdigit() or (
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value_str.startswith("-") and value_str[1:].isdigit()
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):
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info["datatype"] = "Int" # O DInt? Int es más seguro
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elif "." in value_str:
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try:
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float(value_str)
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info["datatype"] = "Real" # O LReal? Real es más seguro
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except ValueError:
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pass # Podría ser string con punto
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elif "#" in value_str:
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# Inferir tipo desde prefijo (T#, DT#, '...', etc.)
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parts = value_str.split("#", 1)
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prefix = parts[0].upper()
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if prefix == "T":
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info["datatype"] = "Time"
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elif prefix == "LT":
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info["datatype"] = "LTime"
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elif prefix == "S5T":
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info["datatype"] = "S5Time"
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elif prefix == "D":
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info["datatype"] = "Date"
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elif prefix == "DT":
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info["datatype"] = "DT"
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elif prefix == "DTL":
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info["datatype"] = "DTL"
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elif prefix == "TOD":
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info["datatype"] = "Time_Of_Day"
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# Añadir más prefijos si es necesario (WSTRING#, STRING#, etc.)
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elif value_str.startswith("'") and value_str.endswith("'"):
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info["datatype"] = "String" # O Char? String es más probable
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else:
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info["datatype"] = (
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"TypedConstant" # Genérico si no se reconoce prefijo
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)
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elif value_str.startswith("'") and value_str.endswith("'"):
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info["datatype"] = "String" # O Char?
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info["value"] = value_str # Guardar valor original
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# Intentar conversión numérica/booleana (igual que antes)
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dtype_lower = info["datatype"].lower()
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# Quitar prefijo y comillas para la conversión
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val_str_processed = value_str
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if isinstance(value_str, str):
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if "#" in value_str:
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val_str_processed = value_str.split("#", 1)[-1]
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if (
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val_str_processed.startswith("'")
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and val_str_processed.endswith("'")
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and len(val_str_processed) > 1
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):
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val_str_processed = val_str_processed[1:-1]
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try:
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if dtype_lower in [
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"int",
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"dint",
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"udint",
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"sint",
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"usint",
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"lint",
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"ulint",
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"word",
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"dword",
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"lword",
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"byte",
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]:
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info["value"] = int(val_str_processed)
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elif dtype_lower == "bool":
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info["value"] = (
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val_str_processed.lower() == "true" or val_str_processed == "1"
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)
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elif dtype_lower in ["real", "lreal"]:
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info["value"] = float(val_str_processed)
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# Mantener string para otros tipos (Time, Date, String, Char, TypedConstant)
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except (ValueError, TypeError) as e:
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# Permitir que el valor sea un string si la conversión falla (podría ser una constante simbólica)
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# print(f"Advertencia: No se pudo convertir valor constante '{val_str_processed}' a {dtype_lower} UID={uid}. Manteniendo string. Error: {e}")
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info["value"] = value_str # Mantener string original
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else:
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info["type"] = "unknown_structure"
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print(f"Advertencia: Access UID={uid} no es Symbol ni Constant.")
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# return info
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# Verificar nombre faltante después de intentar parsear
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if info["type"] == "variable" and info.get("name") is None:
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print(f"Error Interno: parse_access var sin nombre UID {uid}.")
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info["type"] = "error_no_name"
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# return info
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return info
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def parse_part(part_element):
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"""Parsea un nodo <flg:Part> de LAD/FBD."""
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# Asume que Part está en namespace flg
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if part_element is None:
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return None
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uid = part_element.get("UId")
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name = part_element.get("Name")
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if not uid or not name:
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print(
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f"Error: Part sin UID o Name: {etree.tostring(part_element, encoding='unicode')}"
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)
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return None
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template_values = {}
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try:
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# TemplateValue parece NO tener namespace flg
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for tv in part_element.xpath("./TemplateValue"):
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tv_name = tv.get("Name")
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tv_type = tv.get("Type")
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if tv_name and tv_type:
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template_values[tv_name] = tv_type
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except Exception as e:
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print(f"Advertencia: Error extrayendo TemplateValues Part UID={uid}: {e}")
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negated_pins = {}
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try:
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# Negated parece NO tener namespace flg
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for negated_elem in part_element.xpath("./Negated"):
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negated_pin_name = negated_elem.get("Name")
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if negated_pin_name:
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negated_pins[negated_pin_name] = True
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except Exception as e:
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print(f"Advertencia: Error extrayendo Negated Pins Part UID={uid}: {e}")
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return {
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"uid": uid,
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"type": name, # El 'type' de la instrucción (e.g., 'Add', 'Contact')
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"template_values": template_values,
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"negated_pins": negated_pins,
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}
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def parse_call(call_element):
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"""Parsea un nodo <flg:Call> de LAD/FBD."""
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# Asume que Call está en namespace flg
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if call_element is None:
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return None
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uid = call_element.get("UId")
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if not uid:
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print(
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f"Error: Call encontrado sin UID: {etree.tostring(call_element, encoding='unicode')}"
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)
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return None
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# << CORRECCIÓN: CallInfo y sus hijos están en el namespace por defecto (flg) >>
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call_info_elem = call_element.xpath("./flg:CallInfo", namespaces=ns)
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if not call_info_elem:
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print(f"Error: Call UID {uid} sin elemento flg:CallInfo.")
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# Intentar sin namespace como fallback por si acaso
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call_info_elem_no_ns = call_element.xpath("./CallInfo")
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if not call_info_elem_no_ns:
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print(
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f"Error: Call UID {uid} sin elemento CallInfo (probado sin NS tambien)."
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)
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return {
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"uid": uid,
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"type": "Call_error",
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"error": "Missing CallInfo",
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} # Devolver error
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else:
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# Si se encontró sin NS, usar ese (menos probable pero posible)
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print(f"Advertencia: Call UID {uid} encontró CallInfo SIN namespace.")
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call_info = call_info_elem_no_ns[0]
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else:
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call_info = call_info_elem[0] # Usar el encontrado con namespace
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block_name = call_info.get("Name")
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block_type = call_info.get("BlockType") # FC, FB
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if not block_name or not block_type:
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print(f"Error: CallInfo para UID {uid} sin Name o BlockType.")
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return {
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"uid": uid,
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"type": "Call_error",
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"error": "Missing Name or BlockType in CallInfo",
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}
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instance_name = None
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instance_scope = None
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# Buscar Instance y Component (que también deberían estar en namespace flg)
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# Solo relevante si es FB
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if block_type == "FB":
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instance_elem_list = call_info.xpath("./flg:Instance", namespaces=ns)
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if instance_elem_list:
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instance_elem = instance_elem_list[0]
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instance_scope = instance_elem.get("Scope") # GlobalDB, LocalVariable, etc.
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# Buscar Component dentro de Instance
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component_elem_list = instance_elem.xpath("./flg:Component", namespaces=ns)
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if component_elem_list:
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component_elem = component_elem_list[0]
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db_name_raw = component_elem.get("Name")
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if db_name_raw:
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# Asegurar comillas dobles para nombres de DB
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instance_name = (
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f'"{db_name_raw}"'
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if not db_name_raw.startswith('"')
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else db_name_raw
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)
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else:
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print(
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f"Advertencia: <flg:Component> en <flg:Instance> FB Call UID {uid} sin 'Name'."
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)
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else:
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print(
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f"Advertencia: No se encontró <flg:Component> en <flg:Instance> FB Call UID {uid}."
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)
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else:
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print(
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f"Advertencia: FB Call '{block_name}' UID {uid} sin <flg:Instance>. ¿Llamada a multi-instancia STAT?"
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)
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# Aquí podríamos intentar buscar si el scope del Call es LocalVariable para inferir STAT
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call_scope = call_element.get("Scope") # Scope del <Call> mismo
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if call_scope == "LocalVariable":
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# Si la llamada es local y no tiene <Instance>, probablemente es una multi-instancia STAT
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instance_name = f'"{block_name}"' # Usar el nombre del bloque como nombre de instancia STAT (convención común)
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instance_scope = "Static" # Marcar como estático
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print(
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f"INFO: Asumiendo instancia STAT '{instance_name}' para FB Call UID {uid}."
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)
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# else: # Error si es Global y no tiene Instance? Depende de la semántica deseada.
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# print(f"Error: FB Call '{block_name}' UID {uid} no es STAT y no tiene <flg:Instance>.")
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# return {"uid": uid, "type": "Call_error", "error": "FB Call sin datos de instancia"}
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# El 'type' aquí es genérico 'Call', la distinción FC/FB se hace con block_type
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call_data = {
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"uid": uid,
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"type": "Call",
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"block_name": block_name,
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"block_type": block_type, # FC o FB
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}
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if instance_name:
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call_data["instance_db"] = instance_name # Nombre formateado SCL
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if instance_scope:
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call_data["instance_scope"] = instance_scope # Static, GlobalDB, etc.
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return call_data
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def parse_interface_members(member_elements):
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"""
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Parsea recursivamente una lista de elementos <Member> de una interfaz o estructura.
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Maneja miembros simples, structs anidados y arrays con valores iniciales.
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Usa el namespace 'iface'.
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"""
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members_data = []
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if not member_elements:
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return members_data
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for member in member_elements:
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member_name = member.get("Name")
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member_dtype_raw = member.get(
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"Datatype"
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) # Puede tener comillas o ser Array[...] of "..."
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member_version = member.get("Version") # v1.0 etc.
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member_remanence = member.get("Remanence", "NonRetain")
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member_accessibility = member.get("Accessibility", "Public")
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if not member_name or not member_dtype_raw:
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print(
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"Advertencia: Miembro sin nombre o tipo de dato encontrado. Saltando."
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)
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continue
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# Combinar tipo y versión si existe versión separada
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member_dtype = (
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f"{member_dtype_raw}:v{member_version}"
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if member_version
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else member_dtype_raw
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)
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member_info = {
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"name": member_name,
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"datatype": member_dtype, # Guardar el tipo original (puede tener comillas, versión)
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"remanence": member_remanence,
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"accessibility": member_accessibility,
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"start_value": None,
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"comment": None,
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"children": [], # Para Structs
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"array_elements": {}, # Para Arrays
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}
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# Comentario del miembro
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comment_node = member.xpath("./iface:Comment", namespaces=ns)
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if comment_node:
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# Comentario está dentro de Comment/MultiLanguageText
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member_info["comment"] = get_multilingual_text(comment_node[0])
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# Valor inicial
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start_value_node = member.xpath("./iface:StartValue", namespaces=ns)
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if start_value_node:
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# Puede ser un nombre de constante o un valor literal
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constant_name = start_value_node[0].get("ConstantName")
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member_info["start_value"] = (
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constant_name
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if constant_name
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else (
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start_value_node[0].text
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if start_value_node[0].text is not None
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else ""
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)
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)
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# No intentar convertir aquí, se hará en x3 según el tipo de dato
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# --- Structs Anidados ---
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# Los miembros de un struct están dentro de Sections/Section/Member
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nested_sections = member.xpath(
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"./iface:Sections/iface:Section[@Name='None']/iface:Member", namespaces=ns
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) # Sección sin nombre específico
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if nested_sections:
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# Llamada recursiva
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member_info["children"] = parse_interface_members(nested_sections)
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# --- Arrays ---
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# Buscar elementos <Subelement> para valores iniciales de array
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if isinstance(member_dtype, str) and member_dtype.lower().startswith("array["):
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subelements = member.xpath("./iface:Subelement", namespaces=ns)
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for sub in subelements:
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path = sub.get("Path") # Path es el índice: '0', '1', '0,0', etc.
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sub_start_value_node = sub.xpath("./iface:StartValue", namespaces=ns)
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if path and sub_start_value_node:
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constant_name = sub_start_value_node[0].get("ConstantName")
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value = (
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|
constant_name
|
|
if constant_name
|
|
else (
|
|
sub_start_value_node[0].text
|
|
if sub_start_value_node[0].text is not None
|
|
else ""
|
|
)
|
|
)
|
|
member_info["array_elements"][path] = value
|
|
# Parsear comentario del subelemento si es necesario
|
|
sub_comment_node = sub.xpath("./iface:Comment", namespaces=ns)
|
|
if path and sub_comment_node:
|
|
sub_comment_text = get_multilingual_text(sub_comment_node[0])
|
|
# ¿Cómo guardar comentario de subelemento? Podría ser un dict en array_elements
|
|
if isinstance(member_info["array_elements"].get(path), dict):
|
|
member_info["array_elements"][path][
|
|
"comment"
|
|
] = sub_comment_text
|
|
else: # Si solo estaba el valor, convertir a dict
|
|
current_val = member_info["array_elements"].get(path)
|
|
member_info["array_elements"][path] = {
|
|
"value": current_val,
|
|
"comment": sub_comment_text,
|
|
}
|
|
|
|
members_data.append(member_info)
|
|
return members_data
|