Enable reading site config directly from text

src/ert/config/ert_config.py

@@ -53,6 +53,7 @@
     init_forward_model_schema,
     init_site_config_schema,
     init_user_config_schema,
+    parse_contents,
 )
 from .parsing import (
     parse as parse_config,
@@ -162,6 +163,12 @@ def from_file(cls, user_config_file: str) -> Self:
         cls.apply_config_content_defaults(user_config_dict, config_dir)
         return cls.from_dict(user_config_dict)
 
+    @classmethod
+    def from_file_contents(cls, user_config_file_contents: str) -> Self:
+        user_config_dict = cls.read_user_config_contents(user_config_file_contents)
+        cls.apply_config_content_defaults(user_config_dict, ".")
+        return cls.from_dict(user_config_dict)
+
     @classmethod
     def from_dict(cls, config_dict) -> Self:
         substitution_list = _substitution_list_from_dict(config_dict)
@@ -382,6 +389,10 @@ def read_site_config(cls) -> ConfigDict:
     def read_user_config(cls, user_config_file: str) -> ConfigDict:
         return parse_config(user_config_file, schema=init_user_config_schema())
 
+    @classmethod
+    def read_user_config_contents(cls, user_config: str) -> ConfigDict:
+        return parse_contents(user_config, schema=init_user_config_schema())
+
     @classmethod
     def _merge_user_and_site_config(
         cls, user_config_dict: ConfigDict, site_config_dict: ConfigDict

src/ert/config/parsing/__init__.py

@@ -9,7 +9,7 @@
 from .forward_model_schema import init_forward_model_schema
 from .history_source import HistorySource
 from .hook_runtime import HookRuntime
-from .lark_parser import parse
+from .lark_parser import parse, parse_contents
 from .queue_system import QueueSystem, QueueSystemWithGeneric
 from .schema_item_type import SchemaItemType
 from .types import MaybeWithContext
@@ -42,4 +42,5 @@
     "init_workflow_job_schema",
     "init_workflow_schema",
     "parse",
+    "parse_contents",
 ]

src/ert/config/parsing/lark_parser.py

@@ -494,6 +494,16 @@ def parse(
     )
 
 
+def parse_contents(
+    contents: str,
+    schema: SchemaItemDict,
+    pre_defines: Optional[List[Tuple[str, str]]] = None,
+) -> ConfigDict:
+    return _transform_tree(
+        _parse_contents(contents, "./config.ert"), "./config.ert", schema, pre_defines
+    )
+
+
 def _transform_tree(
     tree: Tree[Instruction],
     file: str,
@@ -518,11 +528,9 @@ def _transform_tree(
     # add to this list
     _handle_includes(tree, pre_defines.copy(), filepath)
 
-    config_dict = _tree_to_dict(
+    return _tree_to_dict(
         config_file=file,
         pre_defines=pre_defines,
         tree=tree,
         schema=schema,
     )
-
-    return config_dict