[OMCSessionZMQ] add method to escape strings

Author: syntron

OMPython/ModelicaSystem.py

@@ -2037,7 +2037,7 @@ def prepare(self) -> int:
 
                 pk_value = pc_structure[idx_structure]
                 if isinstance(pk_value, str):
-                    pk_value_str = pk_value.replace('"', '\\"')
+                    pk_value_str = self.session().escape_str(pk_value)
                     expression = f"setParameterValue({self._model_name}, {pk_structure}, \"{pk_value_str}\")"
                 elif isinstance(pk_value, bool):
                     pk_value_bool_str = "true" if pk_value else "false"

OMPython/OMCSession.py

@@ -336,7 +336,7 @@ def write_text(self, data: str, encoding=None, errors=None, newline=None):
         if not isinstance(data, str):
             raise TypeError(f"data must be str, not {data.__class__.__name__}")
 
-        data_omc = data.replace('"', '\\"')
+        data_omc = self._session.escape_str(data)
         self._session.sendExpression(f'writeFile("{self.as_posix()}", "{data_omc}", false);')
 
         return len(data)
@@ -576,6 +576,13 @@ def __del__(self):
 
         self.omc_zmq = None
 
+    @staticmethod
+    def escape_str(value: str) -> str:
+        """
+        Escape a string such that it can be used as string within OMC expressions, i.e. escape all double quotes.
+        """
+        return value.replace("\\", "\\\\").replace('"', '\\"')
+
     def omcpath(self, *path) -> OMCPath:
         """
         Create an OMCPath object based on the given path segments and the current OMC session.